Well Data Mgmt

Landmark Graphics Corporation Well Data Management and EditingWell Data Management and Editing

IntroductionWhat Is in This Manual? .................................................................................... 1

About This Manual Set ...................................................................................... 2

PetroWorks/LogEdit Documentation .......................................................... 2

StratUtils Documentation ............................................................................ 4

OpenWorks Documentation ........................................................................ 4

Manual Conventions .................................................................................... 5

LogEdit: Editing Wellbore DataLogEdit Features .......................................................................................... 6

Track Types ................................................................................................... 7

Depth Track ............................................................................................. 7

Curve Track ............................................................................................. 8

Pick Name Track ..................................................................................... 8

Pick Line Track ........................................................................................ 8

Well Note Track ....................................................................................... 8

Contents

Well Data Management and EditingR2003.12.1 Contents i

Workflow ............................................................................................................. 9

Working with LogEdit ........................................................................................ 10

Starting LogEdit for the first time ............................................................... 10

LogEdit Main Menu ...................................................................................... 13

Landmark Graphics Corporation Well Data Management and EditingMenu Items .............................................................................................. 13

File ...................................................................................................... 13

View .................................................................................................... 14

Options ............................................................................................... 15

Tools ................................................................................................... 16

Help ..................................................................................................... 16

Using the Workflows ......................................................................................... 17

Edit Mode ...................................................................................................... 17

Save Editing ............................................................................................ 17

Quit Editing ............................................................................................. 17

Undo Last Edit ........................................................................................ 18

Show Edits .............................................................................................. 18

Working with the Curve icons .......................................................................... 19

Multiple Tie Line Depth Shift ....................................................................... 19

Workflow .................................................................................................. 19

Bulk Depth Shift ........................................................................................... 20

Workflow .................................................................................................. 20

Baseline Shift ............................................................................................... 22

Workflow .................................................................................................. 22

Patch Curve .................................................................................................. 23

Workflow .................................................................................................. 24

Value Edit ...................................................................................................... 25

Workflow .................................................................................................. 26

Block (Upscale) Edit ..................................................................................... 26

Workflow .................................................................................................. 27R2003.12.1 Contents ii

Landmark Graphics Corporation Well Data Management and EditingSplice Curves ............................................................................................... 28

Workflow .................................................................................................. 28

Tabular Value Edit ........................................................................................ 32

Workflow .................................................................................................. 32

Freezing Columns or Rows .............................................................. 32

Freezing a selection .......................................................................... 33

Unfreezing Columns or Rows .......................................................... 34

Copying and Pasting Values ............................................................ 34

Filling a Selection with a Single Value ............................................ 34

Clearing the Status Area ................................................................... 35

Saving Edits and Exiting Tabular Edit ............................................. 35

Rescale .................................................................................................... 37

Workflow .................................................................................................. 37

Fill Gaps ........................................................................................................ 38

Workflow .................................................................................................. 38

Fill Gaps Example ................................................................................... 39

Working with the Pick icons ............................................................................. 40

Create a New Pick ........................................................................................ 40

Select a Pick from a List .............................................................................. 40

Working with the Well note icon ....................................................................... 42

Create a New Well Note .......................................................................... 42

Working with the Core icons ............................................................................ 44

Relating Core Curves ................................................................................... 44

Workflow .................................................................................................. 45

Defining Core Curve Symbol Attributes ..................................................... 46R2003.12.1 Contents iii

Landmark Graphics Corporation Well Data Management and EditingChanging Symbols ................................................................................. 46

Changing Symbol Size ........................................................................... 47

Core Data Workflow ..................................................................................... 47

Edit Core Data .............................................................................................. 48

Preparing to Edit Core Data ................................................................... 48

Depth Shifting an Entire Interval ........................................................... 50

Stretching or Compressing an Interval ................................................. 51

Flipping Depths ....................................................................................... 52

Working with the Display icons ........................................................................ 54

Re-Read Well Information from Database ............................................ 54

Refresh Screen ....................................................................................... 54

Background Color ................................................................................... 54

Set Depth Display Parameters ............................................................... 54

Set Main Window Depth Range ........................................................ 55

Reset Main WIndow to Full Depth Range ........................................ 55

Set the Zoom Range .......................................................................... 55

Main Window Display Scale (feet) .................................................... 55

Working with the Well icons ............................................................................. 56

Open Previous Well ................................................................................ 56

Select Well ............................................................................................... 56

Open Next Well ........................................................................................ 56

Select Template ....................................................................................... 57

Select Curves .......................................................................................... 57

Modify Curve and Track Parameters ..................................................... 58

Workflow ............................................................................................. 58R2003.12.1 Contents iv

Landmark Graphics Corporation Well Data Management and EditingAppendix ............................................................................................................ 60

Appendix 1: Details of Multiple Tie Line Depth Shifting ........................... 60

Multiple Tie Line Depth Shifting Example ....................................... 61

Multiple Tie Line Depth Shifting Example (cont.) ........................... 62

Multiple Tie Line Depth Shifting (Unassisted) Steps ..................... 63

Appendix 2: Details of assisted Multiple Tie Line Depth Shifting ........... 65

Multiple Tie Line Depth Shifting (Assisted) Steps ......................... 65

Understanding Assisted Depth Shift Parameters ........................... 67

Editing Wellbore ParametersIntroduction ........................................................................................................ 70

About This Chapter ...................................................................................... 70

Parameters .................................................................................................... 71

Parameter Level Inheritance .................................................................. 72

Geo-centric ........................................................................................ 72

Pass-centric ....................................................................................... 74

WPE Level Inheritance: Geo-centric Example ................................ 75

Source Priority Inheritance .................................................................... 76

WPE Source Priority Inheritance: Geo-centric Example ............... 77

Input and Output Curves ............................................................................. 78

Units of Measure .......................................................................................... 78

Spreadsheet Format .................................................................................... 78

Saving Parameters ....................................................................................... 79

Opening Wellbore Parameter Editor ................................................................ 80

Main Window Layout ......................................................................................... 81

Main Menu Options ...................................................................................... 82R2003.12.1 Contents v

Landmark Graphics Corporation Well Data Management and EditingMain Window Buttons .................................................................................. 83

Application .............................................................................................. 83

Columns (Parameter Group) .................................................................. 84

Select Rows (Parameter Domains) ........................................................ 85

Save ......................................................................................................... 86

Legend ..................................................................................................... 86

Main Window View Tabs .............................................................................. 87

Mouse Button 3 Options .............................................................................. 87

Pointing Dispatcher ..................................................................................... 87

Spreadsheet .................................................................................................. 89

Columns .................................................................................................. 89

Rows ........................................................................................................ 90

How to Use Wellbore Parameter Editor ........................................................... 91

Getting Started ................................................................................................... 92

Preparation ................................................................................................... 93

Configuring your Project ........................................................................ 94

Loading a PPP File (Optional) ............................................................... 96

Editing Cell Values ....................................................................................... 97

Editing a Column .................................................................................... 98

Editing a Row .......................................................................................... 99

Editing Tools ................................................................................................. 99

Copy/Paste .............................................................................................. 99

View Tabs ................................................................................................. 100

Cell Legend ............................................................................................. 101

Inherited Values ................................................................................. 102R2003.12.1 Contents vi

Landmark Graphics Corporation Well Data Management and EditingInheritance Rules .............................................................................. 102

Modified Values ................................................................................. 106

Out-of-Range Values ......................................................................... 107

Insensitive Values ............................................................................. 107

Cell/Parameter Detail .............................................................................. 107

Freeze/Unfreeze ...................................................................................... 108

Mouse Button 3 Options ....................................................................... 108

Interpretive Application Parameters ................................................................ 110

Editing Parameters for Interpretive Applications ...................................... 110

Selecting Input/Output Curves ................................................................... 111

Alias Lists ................................................................................................ 112

Details (Names, Runs, Versions) ........................................................... 113

Names ...................................................................................................... 113

Match Measurement Unit Type .............................................................. 115

Include UNKNOWN .............................................................................. 115

Saving Your Work .............................................................................................. 116

Saving Parameters to the Current Project ................................................. 116

Exporting to PPP File ................................................................................... 118

Exporting to MathPack SDF File ................................................................. 120

Saving the Current Configuration ............................................................... 122

Exiting Wellbore Parameter Editor ............................................................. 123

Editing StratUnits, Surfaces, and PicksOverview ............................................................................................................. 124

Definition of Terms ....................................................................................... 125

What Is a Unit? ........................................................................................ 125R2003.12.1 Contents vii

Landmark Graphics Corporation Well Data Management and EditingWhat Is a Pick? ........................................................................................ 125

What Is a Geologic Feature? ................................................................. 126

What Is an Observation Number? ......................................................... 126

How Geologic Age Is Determined ............................................................... 127

Comparing StratUnit Editor to Strat Column Editor ................................. 128

Opening StratUnit Editor .................................................................................. 129

Main Window Layout ......................................................................................... 130

File Menu ....................................................................................................... 131

View Menu ..................................................................................................... 131

Options Menu ............................................................................................... 131

Tools Menu .................................................................................................... 131

Status Area ................................................................................................... 132

Main Window Buttons .................................................................................. 132

Create (Units) .......................................................................................... 132

Copy (Units) ............................................................................................. 132

Modify (Units) .......................................................................................... 132

Delete (Units) ........................................................................................... 132

Create (Picks) .......................................................................................... 132

Modify (Picks) .......................................................................................... 133

Delete (Picks) .......................................................................................... 133

StratUnit Editor Workflow Diagram .................................................................. 134

Setting View Parameters ............................................................................. 135

Selecting the StratUnit List Contents Options ..................................... 135

Specifying StratUnit List Names ........................................................... 136

Specifying StratUnit List Order ............................................................. 137R2003.12.1 Contents viii

Landmark Graphics Corporation Well Data Management and EditingAccessing the What If Source Priority List ....................................... 138

Clearing the Status Area ........................................................................ 138

Setting Tools Parameters ............................................................................ 139

Viewing All Picks in the Selected Well .................................................. 139

Viewing All StratUnits in the Column .................................................... 140

Viewing All Surfaces in the Project ....................................................... 141

Setting Options Parameters ........................................................................ 141

How Windows Interact with One Another ....................................................... 142

Accessing the Surface Pick Detail Window ............................................... 142

Interacting with the All Picks In Selected Well Window ........................... 143

Interacting with the All Surfaces in the Project Window .......................... 144

Working with StratUnits and Surfaces ............................................................ 145

Creating StratUnits and New Surfaces ....................................................... 145

Step 1: Define Picks for New Surfaces ................................................. 145

Step 2: Name the StratUnit and New Surfaces ..................................... 146

Modifying StratUnits and Surfaces ............................................................ 147

Steps ........................................................................................................ 147

Copying Units ............................................................................................... 148

Deleting Units ............................................................................................... 149

Steps ........................................................................................................ 149

Working with Picks ............................................................................................ 150

Creating Picks for Existing Surfaces ......................................................... 150

Modifying Picks ............................................................................................ 151

Steps ........................................................................................................ 151

Deleting Picks ............................................................................................... 152R2003.12.1 Contents ix

Landmark Graphics Corporation Well Data Management and EditingSteps ........................................................................................................ 152

Exiting StratUnit Editor ..................................................................................... 153

Managing Curves with Curve UtilityOverview ............................................................................................................. 154

Opening Curve Utility ........................................................................................ 155

Window Layout .................................................................................................. 156

File Menu ....................................................................................................... 158

View Menu ..................................................................................................... 158

Options Menu ............................................................................................... 158

Send Menu .................................................................................................... 158

Icons .............................................................................................................. 159

Mode Icons .............................................................................................. 159

Display Customization Icons ................................................................. 159

Curve Display Area ...................................................................................... 160

Selecting Wells .................................................................................................. 164

Viewing and Editing Curve Information ........................................................... 166

Viewing Curve Qualifiers ............................................................................. 166

Viewing Curve Details .................................................................................. 167

Appending Information to Curve History ................................................... 170

Adding Remarks to a Curve ........................................................................ 171

Using Pointing Dispatcher ................................................................................ 173

Customizing the Display ................................................................................... 174

Sorting Curve Data ....................................................................................... 174

Sorting One or Multiple Columns via the Sort Curves Dialog Box .... 174

Sorting One Column Graphically .......................................................... 176R2003.12.1 Contents x

Landmark Graphics Corporation Well Data Management and EditingFiltering and Selecting Curves ................................................................... 177

Using Matches/Does Not Match to Filter .............................................. 182

Using Is One Of/Is Not One Of to Filter ................................................. 182

Using Toggles to Filter ........................................................................... 183

Showing and Hiding Columns .................................................................... 185

Changing Column Order .............................................................................. 187

Deleting Curves ................................................................................................. 188

Copying Curves ................................................................................................. 191

Displaying Curve History .................................................................................. 198

Exiting Curve Utility .......................................................................................... 201

Index .................................................................................................................... 202R2003.12.1 Contents xi

Landmark Graphics Corporation Well Data Management and EditingR2003.12.1 Contents xii

Landmark Graphics Corporation Well Data Management and EditingIntroduction

What Is in This Manual?

This manual describes the following PetroWorks well datamanagement and editing tools:

LogEdit enables you to prepare and edit digitized log curves andcore data. You can view Curve, Depth, Pick Name, Pick Line, andWell Notes tracks. Techniques such as depth shifting, curvesplicing, and baseline shifting aid you in preparing your data forfurther interpretation. Other editing features enable you to correctcurves for cycle skipping and for noise spikes, and to fill in nullvalue gaps.

Wellbore Parameter Editor lets you view and edit wellboreparameter data for use in PetroWorks applications andpetrophysical models.

StratUnit Editor gives you the ability to define stratunits (zones)for wells where no stratunits (zones) have been defined. You cancreate multiple picks for a stratunits surfaces, and you can processstratunits across multiple applications, including MathPack,Tabular Listing, and interpretive applications.

Curve Utility enables you to view, sort, filter, copy, rename, delete,and generate reports on curves within one or more wells.

To access this manual online, select Help > Online Manual from thePetroWorks Pro, PetroWorks Asset, or LogEdit Command Menu.R2003.12.1 Introduction: What Is in This Manual? 1

Landmark Graphics Corporation Well Data Management and EditingAbout This Manual Set

PetroWorks/LogEdit Documentation

The PetroWorks/LogEdit documentation manual set consists of thefollowing.

PetroWorks/LogEdit Documentation Manual Set

Book Chapters Application

Introduction to PetroWorks

Family of Products

Introduction to PetroWorks Family ofProducts

PetroWorks BasicsGlossary

Overview of PetroWorks Pro,PetroWorks Asset, and LogEditapplications and command menusCross-application concepts andactivities

PetroWorks/LogEdit Project

Management

IntroductionCurve Alias List ManagerPetroWorks Preferences

Curve Alias List ManagerPreferences

PetroWorks/Log Edit Data

Import, Export, and

Conversion

IntroductionExporting Log DataConverting Wellbore Data

Log ExportWellbore Data Converter

PetroWorks Data

Preparation

IntroductionEnvironmental CorrectionsCreating a Temperature CurveSmoothing Curves

Environmental CorrectionsTemperature Curve CreationCurve Smoothing

PetroWorks/LogEdit Well

Data Management and

Editing

IntroductionEditing Curve Data in LogEditEditing Wellbore ParametersEditing StratUnits, Surfaces, and PicksManaging Curves with Curve Utility

LogEditWellbore Parameter EditorStratUnit EditorCurve Utility

PetroWorks Basic

Interpretive Applications

IntroductionPreliminary ReconnaissanceLog FunctionsQuickInterp

Preliminary ReconnaissanceLog FunctionsQuickInterpR2003.12.1 Introduction: About This Manual Set 2

Landmark Graphics Corporation Well Data Management and EditingPetroWorks Progressive

Interpretive Applications

IntroductionShale VolumeComplex LithologyOnePhiSwShaly SandDual WaterMultiMineralPulsed NeutronPreMRIANSwbMRIANMRIANAppendix A: Water Saturation EquationsUsed in Shaly Formations

Shale VolumeComplex LithologyOnePhiSwShaly SandDual WaterMultiMineralPulsed NeutronPreMRIANSwbMRIANMRIAN

PetroWorks/LogEdit User

Programming

IntroductionModel BuilderBuilding Algorithms with MathpackUser Models

Model BuilderMathPackUser Models

PetroWorks/LogEdit

Visualization

IntroductionGenerating CrossplotsTabular ListViewing Reports with Report Viewer

CrossPlotTabular ListReport Viewer

PetroWorks Volumetrics IntroductionSummationDetermining Sensitivity

SummationSensitivity

PetroWorks Parameters available online only; describes theparameters required for all interpretiveapplications.

PetroWorks/LogEdit Documentation Manual Set (Continued)

Book Chapters ApplicationR2003.12.1 Introduction: About This Manual Set 3

Landmark Graphics Corporation Well Data Management and EditingStratUtils Documentation

PetroWorks/LogEdit applications share a set of project management,data management, visualization, and mapping utilities with StratWorks.Documentation for these utilities appears in the following StratWorksmanuals:

OpenWorks Documentation

In addition to the PetroWorks/LogEdit and StratWorks manuals, youmay occasionally need to refer to several OpenWorks manuals toperform certain tasks. These manuals include

Using OpenWorks. Refer to this manual for an explanation of theOpenWorks environment .

OpenWorks Data Management. Refer to this manual forinstructions on creating and managing projects. You must create aproject with a Cartographic Reference System (described in theProject Management and Map Projection Editor chapters)before you can load data. This manual also provides instructionsfor using some of the OpenWorks utilities like the Well DataManager and Well List Manager.

OpenWorks Data Import/Export. Refer to this manual forinstructions on how to load and transfer data between applicationsrunning under the OpenWorks environment.

StratWorks Documentation Manual Set

Book Section Application

Introduction to StratWorks Using the Color Control Tools

Using the Marginalia EditorDefining Headers and TrailersGenerating Lithology Log Curves

Color Control Seismic & LogVariable FillsColor Control Contour &GeoCellularMarginalia EditorHeader/Trailer EditorLithology Curve Generator

Setting Up StratWorks Creating and Transferring Well TemplatesPreviewing Your Well DataCreating Stratigraphic Columns

Well Template EditorSingle Well ViewerStrat Column Editor

Mapping and Cross Sections Creating Basemaps; Making Structure andIsochore Maps

MapView

Wellbore Manager User

Guide

All Wellbore ManagerR2003.12.1 Introduction: About This Manual Set 4

Landmark Graphics Corporation Well Data Management and EditingManual Conventions

This manual uses certain conventions to explain how to use variousfeatures of the program:

Menu options Menu options and button names are printed inboldface, for example, Setup.

key Press the indicated key on the keyboard, forexample, Return.

type startow Text that you are required to type in is printedin a different typeface (Courier).Type exactly what you see.

typeprojectname

A different typeface in italics (CourierItalics) indicates that you are to supplyinformation. At projectname, for example,you should enter the name of your project.

Click on Move the cursor to the option or objectspecified and quickly press and release themouse button. Unless otherwise specified,use Button 1.

Press and drag Press the mouse button and continue to hold itdown while moving the cursor to the optionyou want or to a new location in the graphicdisplay area; then release the button.

Highlight In a dialog box, move the cursor to the name ofthe item you wish to use and select it with themouse.

Select Move the cursor to the option or object youwant to select and click on it.

Double-click Click the mouse button twice rapidly withoutmoving the mouse. The first click highlightsthe option, object, or text beneath the cursor;the second click is equivalent to pressing theOK button to accept the selection.

Triple-click Click the mouse button three times rapidlywithout moving the mouse to highlight a stringof text (more than one word) beneath thecursor.R2003.12.1 Introduction: About This Manual Set 5

Landmark Graphics Corporation Well Data Management and EditingLogEdit: Editing Wellbore Data

The LogEdit application is in three products; LogEdit (the applicationand product have a common name), PetroWorks Asset, andPetroWorks Pro. The application is accessible in the same location ineach product: from the Command Menu, Data Prep LogEdit.

The LogEdit application enables you to prepare and edit digitized logcurves, core data, picks, and well notes. You can view Curve, Depth,Pick Name, Pick Line, and Well Notes tracks in templates that havebeen created in Single Well Viewer.

LogEdit Features

LogEdit functionality allows you to prepare data for processing andinterpretation. If you are an experienced PetroWorks user or familiarwith log editing, click on the highlighted functionality to go to the stepsof these tasks:

Shifting DepthsA curve is shifted to match other curves, either from differentservices, or because there have been problems with loading thecurve. The shift can be a bulk shift (the same shift valueapplied to all depths), or a multiple tie-line (the curve isstretched and squeezed, like a rubber band, to another curve).

Splicing CurvesAlthough OpenWorks automatically splices curves when thecurves are requested by Curve Name or Curve Details, there aretimes when specific curves need to be spliced, or the spliceneeds to happen in a specific, and unusual, location.

Patching Curves (graphical or interpolation from valid points) Blocking Curves (upscaling or zoning)

Blocking or upscaling a curve is used to better match theresolution of data from other sources, like seismic, or for use inreservoir simulation.

Editing, rescaling, and resampling valuesR2003.12.1 LogEdit: Editing Wellbore Data: 6

Landmark Graphics Corporation Well Data Management and EditingCurve values are edited to account for environmental conditionssuch as hole washouts, or to estimate and compensate formissing data.

Depth Shifting Core dataCore data can be shifted while keeping the integrity of datavalues and data spacing, and the core data can also be stretched,squeezed, and inverted in depth if conditions require Core datais shifted so that no datapoint interpolation takes place; that is,the values of the original data are honored.

Creating PicksPicks can be added, modified, and deleted with the depthdetermined graphically or by entering a depth value.

Creating and Editing Well NotesWell notes, associated with a specific depth, can be created.

You can also:

Save and retrieve a LogEdit session at any time Edit and save a well template for use in other PetroWorks and

StratWorks applications Transfer curve, template, and well information to/from other

applications via Pointing Dispatcher

You can adjust the display by:

Changing the depth scale of the main display pane Changing the depth range of the main display pane, and the depth

interval of the zoom display pane Modifying the display parameters of the displayed data.

Track Types

LogEdit recognizes Depth, Curve, Pick Name, Pick Line, and WellNotes tracks. LogEdit honors most attributes associated with thesetracks in Well Template Editor, as described below.

Depth Track

LogEdit displays measured depth (MD) centered in the track regardlessof the depth type and placement chosen for the track in Well TemplateEditor.R2003.12.1 LogEdit: Editing Wellbore Data: 7

Landmark Graphics Corporation Well Data Management and EditingLogEdit does NOT honor Scale Placement, Left/Right Type,Annotation Increments, Rotation, or Apply Shift to Time-Depth Curveattributes for this track.

Curve Track

LogEdit can display any scalar curve tracks.

LogEdit honors Curve Display Parameters: Scalar Type, Left Scale,Right Scale, some Line Types, some Display Types, Line Color, CurveSource, and Substitute Curves.

LogEdit does not honor Lattice Parameters, Curve Fills, ImportanceLevel, Location in Track, or Scale Display Parameters.

Pick Name Track

This track contains editable pick names and honors the followingattributes set in Well Template Editor: Source Priority vs. Data Source,Data Source, Pick Kinds or All, Pick Kinds, Text Justification, Name,Observation Number, Qualifier, Confidence, Geologic Feature,Interpreter, Dip Angle and Azimuth, and Measured Depth (MD).

LogEdit does NOT honor Display Type.

Pick Line Track

The Pick Line track always overlays other tracks, just as it does in WellTemplate Editor. If the template contains a Pick Line track but no PickName track, the pick name is drawn with the pick line. If the templatecontains a Pick Name track, the pick name cannot be drawn with thepick line.

LogEdit honors Source Priority vs. Data Source (you must restartLogEdit to apply changes to Interpreter Source Priority made in otherapplications such as StratUnit Editor); Data Source; Pick Kinds or All;and Pick Kinds.

LogEdit does NOT honor Display Type.

Well Note Track

LogEdit honors Data Source and Filter on Note Type.R2003.12.1 LogEdit: Editing Wellbore Data: 8

Landmark Graphics Corporation Well Data Management and EditingWorkflow

The following workflow gives a generalized overview of the stepsinvolved in editing wellbore data.

Open LogEditPetroWorks > Data Prep > LogEdit

For the current well,Select Template and Curves

Select a Session FileFile > Open Session File

Select a new Well,Template, and Curves

Select the data type to editEdit Mode (Curve, Core, Pick, Well Note)

If editing a curve, first select the curve to be edited,then select the type of editing by choosing an editing icon.

If editing a core, pick, or well note, first select the editing icon,then follow the instructions which appear.

At any time during editing, by using MB3 or the icons on the lef t of the window, you canUndo the last edit, Show the results of the editing,

Save the edits you have made. Stop editing without saving the edits.

For edited curves, you can save the edited curve with a new name,or save the curve with the same name as a new version.

Open LogEditPetroWorks > Data Prep > LogEdit

For the current well,Select Template and Curves

Select a Session FileFile > Open Session File

Select a new Well,Template, and Curves

Select the data type to editEdit Mode (Curve, Core, Pick, Well Note)

If editing a curve, first select the curve to be edited,then select the type of editing by choosing an editing icon.

If editing a core, pick, or well note, first select the editing icon,then follow the instructions which appear.

At any time during editing, by using MB3 or the icons on the lef t of the window, you canUndo the last edit, Show the results of the editing,

Save the edits you have made. Stop editing without saving the edits.

For edited curves, you can save the edited curve with a new name,or save the curve with the same name as a new version.R2003.12.1 LogEdit: Editing Wellbore Data: Workflow 9

Landmark Graphics Corporation Well Data Management and EditingWorking with LogEdit

This section discusses how to start LogEdit, work with the main men,and display data. After setting up the display, you can adjust the displayoptions and begin editing your curves.

Preliminary to running LogEdit, you will need to know:

a project a measurement system an interpreter a well list a well a well list format

The first time you open LogEdit, the program asks if you want to createtwo well templates: Acquisition Induction and Acquisition Laterolog.If you click on OK, LogEdit adds these two templates to the list ofavailable templates.

Starting LogEdit for the first time

1. From the Launcher Bar of LogEdit, PetroWorks Asset, orPetroWorks Pro: select Data Prep Log Edit. The MainWindow appears, with no data.

2. The Select Project window appears. Select a project from the list.

3. The Select Measurement System window appears. Select asystem from the following list:

US Oil Field SPE Preferred Metric US Oil Field (Metric Depth) Canadian Metric US Oil Field DMS Metric DMS STATOIL Standard

4. The Available Interrupters window appears. Select an interpreterfrom the list.R2003.12.1 LogEdit: Editing Wellbore Data: Working with LogEdit 10

Landmark Graphics Corporation Well Data Management and Editing5. The Select Well List window appears. Select from the list of wellsin your project.

6. The Select a Well window appears. Select a well from the list ofwells.

7. Select a Wells in Well List Format window appears. Your choicesare:

Common Well Name | UWI Common Well Name Operator | Well Name | Well Number Operator | Well Number UWI UWI | Well ID Well Name Well Name | Well Number Well Number

8. The Select Template window appears. Once the above options areset, this option appears everytime you run LogEdit. Select atemplate from the list and press OK.

If you press Cancel, LogEdit waits until you select a template. UseFile Select Template or the Select Template icon (under theWell icons).

9. The Select Curves window appears. Select or deselect the curvesin the list, using MB1 and/or Select All and Select None. Once theabove options are set, this option appears everytime you runLogEdit. When you press OK, the highlighted (selected) curvesare displayed.

If you press Cancel, LogEdit waits until you select a curve. UseView Reselect Curve in Active Template...or the SelectCurves icon (under the Well icons on the left side.

LogEdit composes a list of all available curves (except multi-valued log curves) that meet the criteria set for each curve track inthe chosen well template. From this list, LogEdit highlights thelatest version of each unique curve name, service, run, passcombination.

Curve names are based on a five-key system that uniquelyidentifies each curve. The naming scheme is

name:service:run:pass:versionR2003.12.1 LogEdit: Editing Wellbore Data: Working with LogEdit 11

Landmark Graphics Corporation Well Data Management and Editingwhere name is a log curve name, service is, generally, atoolstring identifier, run is an OpenWorks internal serial counterassociated with the service, pass is a unidirectional movementsin the wellbore (or experiment or activity that produces data), andversion is a serial counter.

You can use the highlighted list in the Select Curves window orselect a different set of curves, then click on OK.

The well name is centered at the top of the screen. LogEditdisplays the selected curves in the display area. The curve nameand the left and right scales for each curve appear above the trackin which the curve is displayed. If the curve track is too narrow toshow the full curve name, LogEdit displays an ellipsis; you canview the full curve name by moving the cursor over the curvename and looking in the Status area at the bottom of the LogEditwindow.

Once you data is assigned, the Prompt command line takes over.You are prompted to highlight the curves to edit, select and editmode, and select an edit function. If you are familiar with log edit,you can skip the next section about the LogEdit menu and go toUsing the Workflow.R2003.12.1 LogEdit: Editing Wellbore Data: Working with LogEdit 12

Landmark Graphics Corporation Well Data Management and EditingLogEdit Main Menu

Menu Items

File

Select Well... opens the Select Well window that appears whenLogEdit first opens; it allows you to select a well for editing. This is thesame as the Select Well icon.R2003.12.1 LogEdit: Editing Wellbore Data: Working with LogEdit 13

Landmark Graphics Corporation Well Data Management and EditingSelect Template... opens the Select Template window that appearswhen LogEdit first opens; it allows you to select a new template. This isthe same as the Select Template icon.

Save Current Template saves the current template and any changesthat you have made to the current template name.

Save Current Template As... saves the current template and anychanges made to a new template name. It opens the Name NewTemplate window. You can either select a current template name ortype in a new template name (20 characters maximum).

Open Session File... opens a file containing your LogEdit displayparameters. Select the file in the Open Configuration window.

Save Session File... saves the current LogEdit session for laterretrieval. Each time you exit LogEdit, the session parameters (wellname, well template, and curve parameters) are automatically saved toa file in the current working directory called last_session.logedit_cfg.This opens the Save Configuration window.

Create a CGM File... creates a file of the current screen. This opensthe Create a CGM File window.

Exit closes LogEdit. You will not get an Are you sure you want toclose LogEdit message.

View

Reselect Curves in Active Template... reselects any of the curves inthe template. This is the same as the Select Curves icon.

Modify Curve and Track Parameters... allows you to add and deletecurves and modify the data display. This is the same as the ModifyCurve and Track Parameters icon.

Set Depth Display Parameters... allows you to set the Main Windowdepth range, scale, and the Zoom window depth interval. This is thesame as the Set Depth Display Parameters icon.

Toggle Background Color changes the background color betweenwhite and black. This is the same as the Toggle Background Coloricon.R2003.12.1 LogEdit: Editing Wellbore Data: Working with LogEdit 14

Landmark Graphics Corporation Well Data Management and EditingWell Name Format changes the well name format at any time. Theformats are:

Common Well Name | UWI Common Well Name Operator | Well Name | Well Number Operator | Well Number UWI UWI | Well ID Well Name Well Name | Well Number Well Number

Options

Tracking determines the value in the Position Value section of theStatus Area at the bottom of the Main Window. If Position is selected,the value displayed is that of the location of the cursor in the track. IfCurve Values is selected and a curve is chosen, Position Value displaysthe value of the curve (not the cursor) at the depth of the cursor.

History Insertions can be toggled to either None or Automatic todetermine whether information will be added to the curve history.

Toggle on Enable Assisted Depth Shifting to enable assist multi-tieline depth shifting. LogEdit allows you to set up depth shiftparameters so that you can automatically control the calculation of bestfit between the reference curve and the off-depth curve.

Click How to Display Multiple Tie Line Depth Shift Editsbefore you begin an editing process. Your choices are:

Edits Displayed Only When Show Edits button is pushed todisplay edits when you toggle on the Show Edits icon.

Draw An Additional Edit Curve to continually display the editedcurve.

Toggle on Honor Changes to the Well Name format in ProjectStatus.

Click Automatic Update Options to open the Automatic UpdateOptions window. From this window you can toggle on either/or thefollowing options for saving the edited curve:

Automatically add the created curve to the main edit curves trackR2003.12.1 LogEdit: Editing Wellbore Data: Working with LogEdit 15

Landmark Graphics Corporation Well Data Management and Editing Automatically delete the edited curve from the track

Tools

Relate Core Curves... opens the Relate Core Curves window. Thiswindow allows you to relate curves to the same physical core, so thatdepth modifications to one curve are automatically applied to the otherselected curve. That is, edits to the displayed core curve are performedon each of the core curves you relate to that curve when core data isdepth shifted.

Help

Online Manual accesses this online manual.

On Version displays your current version of the software.

Release Notes accesses this versions Release Notes.R2003.12.1 LogEdit: Editing Wellbore Data: Working with LogEdit 16

Landmark Graphics Corporation Well Data Management and EditingUsing the Workflows

The workflows are described in the order of the icons on the left side ofthe Main Window, from top to bottom.

To begin editing, follow the instructions in the Prompt area at the top ofthe window. Instructions continue to display during the editing process.

Edit Mode

You are first prompted to select an edit mode. You have the followingfour choices:

Curve Pick Well Note Core

When you select an option, the icons that you can use during theediting process highlight. The following icons are always availableduring the editing session. These functions are also still available usingMB3.

Save Editing

When toggled on, this icon saves all edits made during the currentediting session.

Quit Editing

When toggled on, this icons stops the current editing session.R2003.12.1 LogEdit: Editing Wellbore Data: Using the Workflows 17

Landmark Graphics Corporation Well Data Management and EditingUndo Last Edit

When toggled on, this icon erases the previous edit. This option isavailable only when an edit is in progress.

Show Edits

When toggled on this icon redraws the curve on the screen to reflect thecurrent set of edits that you made.R2003.12.1 LogEdit: Editing Wellbore Data: Using the Workflows 18

Landmark Graphics Corporation Well Data Management and EditingWorking with the Curve icons

There are 10 curve icons. This section discusses the workflowassociated with these icons.

Multiple Tie Line Depth Shift

When toggled on, this icon is used to depth-align data from differentservices (toolstring descents) in the same run or data from differentruns.

Workflow

1. Toggle on Curve from the Edit Mode area and select a curve toedit.

2. Toggle on the Multiple Tie Line Depth Shift icon.

3. Click on the reference curve. Drag and drop the curve to thereference curves desired depth location. A line is drawn from theoriginal curve at the chosen depth point to the new depth location.

4. Repeat the above step at consecutively increasing depths until youhave made all the needed depth shifts.

At any time you can:

Show the edited version of the curve with the Show Edits icon

Continuously show the edited curve with MB3Show EditsContinuously

Remember:

This type of depth shifting, also called rubber band depth shifting, will stretch andsqueeze the data in the edited curve. The top and bottom points of the curve arefixed in depth, so stretching can occur over the entire length of the curve. SeeAppendix 1 for more details of multiple tie line depth shifting.R2003.12.1 LogEdit: Editing Wellbore Data: Working with the Curve icons 19

Landmark Graphics Corporation Well Data Management and Editing Delete the last edit with MB3Undo Last or the Undo Last Editicon. Edits are deleted only in the reverse order that they weremade.

5. To stop editing without saving your work, select the Quit Editingicon or MB3 Quit Editing.

To stop editing and save your work, select the Save Editing iconor MB3 Save Edits. The Curves to be Depth Shifted windowappears. Select additional curves to shift in exactly the same way.You can save the depth shift curve with any name.

Bulk Depth Shift

When toggled on, this icon is used to shift data a constant depthamount. Although rare, this can be caused by incorrect depths providedto the logging engineer, or by improper settings in data acquisitionparameters.

Workflow

1. Toggle on Curve from the Edit Mode area and select a curve toedit.

2. Toggle on the Bulk Depth Shift icon.

3. The Bulk Depth Shift window appears. Click on the curve at thedepth that you want to shift. The New Depth and Shift Amountvalues change as you move the cursor up and down the window.Release the cursor when you achieve the correct depth or shiftamount. At any time, you can enter either a New Depth or a ShiftAmount to specify the exact amount of shift to apply to the curve.

Reference Depth is the original depth at which the cursor wasplaced on the curve to be depth shifted.

Original Top Depth is the curve to be depth shifted.

Original Base Depth of the curve to be depth shifted.R2003.12.1 LogEdit: Editing Wellbore Data: Working with the Curve icons 20

Landmark Graphics Corporation Well Data Management and EditingNew Depth is the depth to shift the reference depth.. You can alsoenter a value in this text field. (The Shift Amount text fieldchanges in response to any entry in this field.)

New Top Depth is the current top depth of the curve, calculatedfrom the current shift amount.

New Base Depth is the new base depth of the curve, calculatedfrom the current shift amount.

Shift Amount is the current amount that the curve is shifted. Youcan also enter a value in this text field. (The New Depth text fieldchanges in response to any entry in this field.)




Delete the last edit with MB3Undo Last or the Undo Last Editicon. Edits are deleted only in the reverse order that they weremade.

4. To stop editing without saving your work, select the Quit Editingicon, MB3 Quit Editing. The Quit Editing window appears.Press OK to quit the current editing mode or press Cancel toreturn to the editing mode.

To stop editing and save your work, select the Save Editing iconor MB3 Save Edits or OK. The Save Curve window appears.Accept the default curve name or enter any curve name. Press OKto save the edited curve and end the editing mode or Cancel toreturn to the editing mode.

Note:

If you click on the curve again, you can again move the curve graphically.However, the Shift Amount value is reset to zero. If you accept the shift after thissecond move, the curve is shifted by only the amount shown, not by the totalamount that you wanted to shift.

When you graphically shift the curve a second time, you are essentially starting theshift process over from the beginning.R2003.12.1 LogEdit: Editing Wellbore Data: Working with the Curve icons 21

Landmark Graphics Corporation Well Data Management and EditingBaseline Shift

When toggled on, this icon is used primarily for SP baselines whichoften drift over many hundreds or thousands of feet of depth. Removingthe drift; that is, making the baseline a constant value, simplifies theprocessing of the SP for clay volume (Vclay) or formation waterresistivity (Rw), and improves the display of the data.

Workflow

1. Select Curve from the Edit Mode and select a curve to edit.

2. Toggle on the Baseline Shift icon. The Baseline Value windowappears. Enter the baseline value and click OK. SP baselines areusually assumed to have a value of zero.

3. Starting at the top-most point that you want to shift, click points onthe curve that are a consistent baseline value. When editing iscomplete, the curve values correspond to the baseline points thatwere selected; that is, the difference between the value of the curveat any point and the baseline value remains the same as in theoriginal curve..





4. To stop editing without saving your work, select the Quit Editingicon, MB3 Quit Editing. The Quit Editing window appears.

Remember:

The location of the baseline is determined by both the depth and the scale value ofthe cursor on the track.R2003.12.1 LogEdit: Editing Wellbore Data: Working with the Curve icons 22

Landmark Graphics Corporation Well Data Management and EditingPress OK to quit the current editing mode or press Cancel toreturn to the editing mode.


Baseline Shifting Example

Patch Curve

When toggled on, this icon is useful for correcting obviously-incorrectdata or for modifying a curve for other reasons or uses. With thisfeature, you are actually redrawing the curve and creating data. As aresult, you can remove unwanted data points, such as spikes, andreshape the curve. You can perform up to 500 patch edits in a singlesession.The curve is resampled to the its original increment.

Notice the top to bottom,left to right drift of this SPcurve. You can correct thisdrift with LogEditsBaseline Shift option.

After applying theBaseline Shift correctionand saving the result, allinterpreted 100% shalepoints fall along the 0.0baseline.

With the cursor, pick thepoints you want set toyour specified baselineshift value. In this case,the value 0.0 represents100% shale.

ResuProb- Solu-R2003.12.1 LogEdit: Editing Wellbore Data: Working with the Curve icons 23


1. Select Curve from the Edit Mode and select a curve to edit.

2. Toggle on the Patch Curve icon.

3. Starting at the top-most point to patch, use your mouse to digitizethe interval you want to patch. Use MB2 to end the interval. THiscreates a continuous length of edited data (which, when saved, isresampled to the original sample increment of the curve).





4. To stop editing without saving your work, select the Quit Editingicon, MB3 Quit Editing, or Cancel Edit. The Quit Editingwindow appears. Press OK to quit the current editing mode orpress Cancel to return to the editing mode.

To stop editing and save your work, select the Save Editing iconor MB3 Save Edits or OK. The Save Curve window appears.Accept the default curve name or enter any curve name. Press OKto save the edited curve and end the editing mode or Cancel toreturn to the editing mode.R2003.12.1 LogEdit: Editing Wellbore Data: Working with the Curve icons 24

Landmark Graphics Corporation Well Data Management and EditingCurve Patching Example

Value Edit

When toggled on, this icon allows you to modify curve data onedatapoint at a time, either graphically or by entering a value in a textfield. This mode allows you to change the value of a point, but does notallow you to modify the points depth. This mode is useful if you haveonly a few points to edit, or if you want to graphically edit points. Ifyou have many points to edit, consider using the Patch Curve mode(graphical) or the Tab Edit mode (test-based).

Solu-

The the large spike inthis zone has beeninterpreted as noise.LogEdits Patch Curveoption is used to editout these bad datapoints.

For better resolution,magnify the area ofinterest in the Zoomwindow.

Working in the Zoomwindow, edit the noisespike using the cursor.

Pr Resu

Save your edits with anew curve name. The newversion of your curve isautomatically displayed.R2003.12.1 LogEdit: Editing Wellbore Data: Working with the Curve icons 25


Before you begin the editing process, change the scales of the mainand/or Zoom panes to show the data at a finer scale (fewer point in thesame area). When this mode becomes active, the continuous-line curvedisplay is replaced with individual data points.

1. Select Curve from the Edit Mode area and select a curve to edit.

2. Toggle on the Value Edit icon.

3. When you toggle on the value edit icon, the digitized points of thecurve appears as hash marks. Click on any values that needchanged. The ValueEdit window appears. You can use the mouseor enter a value to change the point.





4. To stop editing without saving your work, select the Quit Editingicon, MB3 Quit Editing. The Quit Editing window appears.Press OK to quit the current editing mode or press Cancel toreturn to the editing mode.


Block (Upscale) Edit

When toggled on, this icon allows you to smooth, or upscale, a curve.Block Editing enables you to square or visually average curve intervals.R2003.12.1 LogEdit: Editing Wellbore Data: Working with the Curve icons 26

Landmark Graphics Corporation Well Data Management and EditingIt is typically used to generalize sonic logs for generating syntheticseismograms. Using this feature, you determine the value of the curveover an interval at the same time that you specify the intervalboundaries, with the depths and value done both graphically andsimulaneously. Blocking does not have to be continuous in depth.

Workflow


2. Toggle on the Block Edit (Upscale) icon.

3. Click on the depth that you want blocking to occur. You can draw arectangle of the depth and value to block the curve by draggingand dropping.. The value and depth of the current location arecaptured along with the depth interval. You can continue thisprocess until the curve is blocked. MB2 stops the current blockingprocess and allows you to move down the curve to another section





4. To stop editing without saving your work, select the Quit Editingicon, MB3 Quit Editing, or Cancel Edit. The Quit Editingwindow appears. Press OK to quit the current editing mode orpress Cancel to return to the editing mode.


Landmark Graphics Corporation Well Data Management and EditingBlock Editing Example

Splice Curves

When toggled on, splicing allows you to join segments from two ormore curves to create a composite curve.

Workflow


2. Toggle on the Splice Curves icon.

Use the cursor tointeractively blockcurve intervals.

Click on ShowEdits to see theedited curve.

A portion of atypical soniclog requiresblock editing.

Save the editedcurve to thedatabase. The blockcurve immediatelydisplays if yourAutomatic UpdateOptions are set toadd the createdcurve to the track.

P S RR2003.12.1 LogEdit: Editing Wellbore Data: Working with the Curve icons 28

Landmark Graphics Corporation Well Data Management and Editing3. You are prompted to select the curve to edit, the track where youwant the spliced curve to appear.

4. You are prompted to click on the first curve near the desired splicedepth. Additional splices must occur at increasing depths. Clickthe next curve at the desired splce depth or click on Save to finishthe splice. The Splice Curves window appears.

The Result Curve Name with its Top Depth and Bottom Depth isdisplayed.

Enter a track number to display the resulantt curve in after yousave it.

The Input Splice Curves and their assoicated Top and Bottomdepths are displayed. You can click on any Input Splice Curvename to replace it.

You can then Combine the input splice curves, save the resultcurve, and display the result curve by selecting Save the resultcurve. Or you can create other output curves using similar sets ofinput curves and identicle splice points by selecting Splice OtherCurves. If you select to splice other curves, the SplicingAdditional Curves window appears.

5. Select additonal curve sets from the list by clicking on the SelectAdditional Curve button and selecting the curves from the list thatappears. Enter an additional curve name and track number for thiscurve to appear. You can also enter new names for the additonalinput splice curves. To combine the additional input splice curves,save the additional curve and display it, click the Save theAdditional Curve button.

6. Select Done to finish.




Delete the last edit with MB3Undo Last or the Undo Last Editicon. Edits are deleted only in the reverse order that they weremade.R2003.12.1 LogEdit: Editing Wellbore Data: Working with the Curve icons 29

Landmark Graphics Corporation Well Data Management and Editing7. To stop editing without saving your work, select the Quit Editingicon, MB3 Quit Editing, or Cancel Edit. The Quit Editingwindow appears. Press OK to quit the current editing mode orpress Cancel to return to the editing mode.


Landmark Graphics Corporation Well Data Management and EditingCurve Splicing Example

The two runs displayed in adjacenttracks need to be spliced. In this case,the shallowest run is designated theresultant curve.

Problem:

Use the cursor to set a splice point in InputSplice Curve at an overlapping zone. Alldata above this point is taken from theresultant curve. All data below this point (orbelow this point and above the next splicepoint) is taken from the input curve. Ifadditional runs exist, continue setting splicepoints, working from the shallow to the

Solution:

Save your splice to the database.Splice results are stored as a newrun (run C), not a new version ofone of the original runs. The newcurve is automatically displayed ifyour Automatic Update Optionsare set to add the created curve tothe track

Result:R2003.12.1 LogEdit: Editing Wellbore Data: Working with the Curve icons 31

Landmark Graphics Corporation Well Data Management and EditingTabular Value Edit

When toggled on, this icon fills a depth interval of a curve or curves with a singlevalue, for example, NULL. You can do this easily and quickly with Tabular Edit,a spreadsheet-like application that enables you to view and edit values for curvesthat appear in LogEdits curve tracks. You can:

view curve values for all displayed, curve intervals in the zoomarea of the main LogEdit window

modify curve values at specified depths or depth intervals for asingle curve or multiple curves

select curve values over depth ranges and copy to the same curveor to other curves at the same or a different depth range

enter NULL values for depth intervals of curves

view immediately any changes you made

Workflow


2. Toggle on Tabular Value Edit icon. The Tabular Edit windowappears.

The columns in the Tabular Edit window correspond to the curvesand depth intervals displayed in the zoom area of LogEdit window.If the same curve is represented in more than one track, the curveis shown in one column in the Tabular Edit window; any changesto the curve in Tabular Edit apply to all tracks.

The number of rows corresponds to the number of data pointsencompassed by the zoom area in LogEdit. Changing the Zoomrange changes the number of curve values in Tabular Edit.

Freezing Columns or Rows

Ordinarily, curve columns appear in the track order given in the mainLogEdit window, and depth rows appear in numeric order. Thus curvesor depths may disappear from view as you scroll around in the TabularR2003.12.1 LogEdit: Editing Wellbore Data: Working with the Curve icons 32

Landmark Graphics Corporation Well Data Management and EditingEdit window. However, you can continue viewing a particular curvesvalues or particular depths as you edit. To do this, you freeze a columnor row so that it is visible at all times. You can layer frozen selectionsso that, for example, two rows and one column always remainvisible.You can edit values in frozen selections just as you do in anyother cells or range of cells.

Freezing a selection

To freeze a selection:

1. Click on the curve name to highlight a column or on depth for arow. You select only one column or one row at a time.

The entire column or entire row is highlighted.

2. Select View Freeze Selection.

The selection moves to the first column and/or first row positionand is enclosed by a frame. The horizontal and/or vertical scrollbar no longer spans the frozen selection. You can now scroll acrossthe other columns or rows and continue to see the values for thefrozen column or row.

Freeze asingle row

Freeze asingle column

Freeze multipledepths andmultiple curvesR2003.12.1 LogEdit: Editing Wellbore Data: Working with the Curve icons 33

Landmark Graphics Corporation Well Data Management and EditingUnfreezing Columns or Rows

To unfreeze a column or row:

1. Click the curve name to select a column or on the depth to select arow. You select only one column or one row at a time.

The entire column or entire row is highlighted.

2. Select View Unfreeze Selection.

The selection returns to its original position in the table.

Copying and Pasting Values

To copy the contents of a cell or range of cells to another or range ofcells.

1. Select a cell or block of cells by dragging and releasing MB1 toselect the block of cells.

The selected block of cells is highlighted.

2. Click Edit Copy.

3. Click where you want to paste the cells. Note: If a source consistsof one cell, the size of the target can be any size. If a sourceconsists of more than one cell (for example, 2 by 2), the target canbe one cell or must equal the size of the target.

4. Click Edit Paste.

The values of all cells change to the values of the cells in the Copybuffer. The LogEdit window updates to reflect the change.

Filling a Selection with a Single Value

To fill a range of cells with a user-specified value:

1. Enter a value in the Value field.

Null values are represented by the string NULL in Tabular Editregardless of the actual value in the curve. When you enter a nullvalue, you must type NULL (all uppercase); Tabular Edit does notrecognize any other nonnumeric character stringsR2003.12.1 LogEdit: Editing Wellbore Data: Working with the Curve icons 34

Landmark Graphics Corporation Well Data Management and Editing2. Select a block of cells by dragging and releasing MB1 toencompass the block of cells.

The selected block of cells is highlighted.

3. Click Fill Selection.

The values of all cells in the selected block change to the value inthe Fill Selection Value field. The LogEdit window updates toreflect the change.

Clearing the Status Area

The Status area can become cluttered as you work. To remove allmessages from the status area, select View Clear Status Area.

Saving Edits and Exiting Tabular Edit

Select File Save. The Status area updates to reflect the editedcolumns and displays the names of any created curves. If you attemptto exit with any edits pending, a dialog box appears to prompt you tosave edits before exiting, to lose edits before exiting, or to cancelexiting.

If you save edits, LogEdit creates a new curve containing the edits youhave just made. Depending on how you have set the automatic updateoptions (LogEdit main menu OptionsAutomatic Update Options),the original curve is deleted from the track and the new curve isdisplayed.R2003.12.1 LogEdit: Editing Wellbore Data: Working with the Curve icons 35

Landmark Graphics Corporation Well Data Management and EditingTabular Editing Example

SOpen Tabular Edit andlocate the bad values(left). Edit them bysubstituting morereasonable values in theirplace (right).

In this case, a single valuewas copied and pasted intoa range of cells.

P

Resu

One of these GR curves shows a large spike near depth 12200,which may be the result of only a few bad data values. You can useTabular Edit to interactively set these to something more reasonable.

When you fill theselection, the graphicaldisplay updates.R2003.12.1 LogEdit: Editing Wellbore Data: Working with the Curve icons 36

Landmark Graphics Corporation Well Data Management and EditingRescale

When toggled on, Rescale can correct for improper calibration andmissed scale changes of digitized logs. It also allows you to convertlinear scales to logarithmic scales (and vice versa), a feature that can beuseful for converting, for example, old neutron logs to porosity.

Use Rescale to:

rescale one curve at a time transform logarithmic curves to linear curves and vice-versa transform one linear scale to another linear scale or one

logarithmic scale to another logarithmic scale

When you use the rescale edit option, you actually create a newcurveyou do not just change the display settings of a curve.

Workflow


2. Toggle on the Rescale icon.The Rescale window appears.

The window displays the currently selected curve, default outputcurve name, top depth, bottom depth, and output curve units forthe curve as given in the OpenWorks log curve header. The outputscale values are copied from the input curve. (These exist in theCurve Dictionary under the Data Management option in theOpenWorks Command Menu.)

3. Select the input curve. The default is the currently selected curve.To select a different curve, click on Select Input Curve. A list ofall available curves appears. Select a curve and click on OK.

4. Select the output curve name. The default name is the input curvename. The default output curve name automatically increments tothe next version of the input curve.

You can enter a different curve name. The service, run, pass, andversion is the same as that of the input curve. Remember that youwill have to add the curve to the track in order to see the newcurve.R2003.12.1 LogEdit: Editing Wellbore Data: Working with the Curve icons 37

Landmark Graphics Corporation Well Data Management and Editing5. Enter the output Curve Units.

6. Enter the top and bottom depths of the rescale interval. The defaultvalues are the top and bottom values for the entire input curve.

7. Enter the left and right scales for the output curve. If either theinput or output scale is logarithmic, toggle on the appropriate logswitch.

8. Click on Apply or OK.



Delete the last edit with the Undo Last Edit icon. Edits are deletedonly in the reverse order that they were made.

9. To stop editing without saving your work, select the Quit Editingicon.

To stop editing and save your work, select the Save Editing icon. TheCurves to be Depth Shifted window appears. Select additional curves toshift in exactly the same way. You can save the depth shift curve withany name.

Fill Gaps

When toggled on, Fill Gaps replaces null values with values that arelinearly interpolated between the points at the top and bottom of a nullgap.

Workflow


2. Toggle on the File Gaps icon.The Fill Gaps window appears.

3. Specify the Depth Distance. Gaps that are smaller than or equal tothe depth distance will be filled.R2003.12.1 LogEdit: Editing Wellbore Data: Working with the Curve icons 38

Landmark Graphics Corporation Well Data Management and Editing4. Specify the depth interval.

Total Depth Range. The total range of the curve is scanned forgaps satisfying the depth distance criteria.

Depth Interval. This option sets a limited range to scan forgaps that satisfy the depth distance criteria. You can define thisgap manually (by typing in the top and bottom depth values) orinteractively.

5. Press Apply. The application performs the fill gap operation andupdates the displayed curve.

6. Select Save Edits.

Fill Gaps Example

Prob- Solu- Resu

This curve shows a largenull-filled gap ofapproximately 30 feet.Use Fill Gap to interpolatebetween the last point ofthe top section and thefirst point of the bottomsection.

Gaps less than or equal tothe user-defined DepthDistance will be filled. Youcan scan the Total DepthRange for null gaps, or usethe cursor to define arestricted area ofinvestigation using theDepth Interval method.

Fill Gap performs linearinterpolation betweenthe last and first validdata value on each sideof the gap.R2003.12.1 LogEdit: Editing Wellbore Data: Working with the Curve icons 39

Landmark Graphics Corporation Well Data Management and EditingWorking with the Pick icons

If the displayed template has a Pick Line or Pick Name track, you canmodify or delete existing picks and create new picks. If the displayedtemplate contains no Pick Line or Pick Name track, you can create anew pick.

Create a New Pick

1. Toggle on the Create a New Pick icon. The Create Pick dialogbox appears, and the LogEdit status area prompts you to completethe pick information.

Note that as you move your cursor in the display area, the Depthvalue in the dialog box changes.

2. Enter a depth or select a depth in the well display area.The Depthfield stops tracking the cursors movement. To begin trackingcursor movement again, click Resume Tracking.

3. Enter the other information for your new pick. The Name cannotexceed 40 characters.

4. Click Create Pick to save your edits, or click on the Cancel Editbutton to cancel any changes.

The Pick is immediately added to the OpenWorks database andappears in the Pick Name / Pick Line tracks of the LogEdit display.

Select a Pick from a List

1. Toggle on the Select Pick From a List icon. A list of existingpicks for the well appears.

2. Toggle to sort the list by depth, pick name, interpreter ID, orsource priority.R2003.12.1 LogEdit: Editing Wellbore Data: Working with the Pick icons 40

Landmark Graphics Corporation Well Data Management and Editing3. Select a pick to edit; the selected pick is highlighted.

The Modify Pick panel appears.

4. Edit the pick information. You can click directly on the display inthe depth track to change the picks depth. The new depth appearsin the Modify Pick dialog box.

5. Click on the Modify Pick button to save your edits, or click on theCancel Edit button to cancel any changes.R2003.12.1 LogEdit: Editing Wellbore Data: Working with the Pick icons 41

Landmark Graphics Corporation Well Data Management and EditingWorking with the Well note icon

If your template contains a Well Note track, you can view existing wellnotes and create new well notes at points along the well display. Notescan be used as reminders to yourself for future sessions or to passinformation along to other interpreters.

You can view well notes in Well Data Managers Well Note Pad dataform, in MapView, and in Correlation. You can filter the note type youwant to display in LogEdit by editing the well note track in WellTemplate Editor.

Create a New Well Note

1. Check that your display contains a well note track.

2. Toggle on the Create a New Well Note icon. The Create WellNote window appears. The Depth field in Create Well Notewindow tracks the cursors position as you move the cursor.

3. Specify a depth by typing a depth or by clicking on the welldisplay at the depth you want for the well note.

If you use MB1 to click at a depth in the well display area, theDepth field stops tracking the cursors movement. To begintracking cursor movement again, click Resume Tracking.

4. Type a note of up to 80 characters in the Note Text field; do notuse the key.

You cannot edit the text or change the depth within LogEdit onceyou have applied the note, so be sure the depth and text are correctbefore applying.

5. Click on Apply.

Do not use the key when typing well note text.

Pressing the key is equivalent to clicking the Apply button, whichadds the note to the track.R2003.12.1 LogEdit: Editing Wellbore Data: Working with the Well note icon 42

Landmark Graphics Corporation Well Data Management and EditingYour note appears in the well note track of the well display with apointer to the depth you specified. The depth, rounded to thenearest whole number, displays at the beginning of the note if theShow Depth option is turned on in Well Template Editor. Youcannot change the line type.

The text height displays as you specified in Well Template Editor.

6. After you have added all the well notes, click on OK to close theWell Note Text dialog box.

To remove or edit any note created in the current session from the welldisplay, open Well Data Manager, delete the note from the Well NotePad data form, return to LogEdit, and click the Refresh icon.

My well note does not appear in the Well Note track.

If your well note does not appear in Well Note track, the most likely cause isthat you have not selected the correct interpreter as the Data Source in the WellNotes Track Parameters panel of the Well Notes track in Well TemplateEditor.

My interpreter does not appear in the Data Source Items list inWell Template Editor.

If this is the first time you are creating well notes, your interpreter may notappear in the Data Source Items list. Create your well notes in LogEdit, thenreturn to Well Template Editor. Your interpreter should now be available as aData Source in the Well Notes Track Parameters panel. Select yourinterpreter, save the template, and PD the template to LogEdit.R2003.12.1 LogEdit: Editing Wellbore Data: Working with the Well note icon 43

Landmark Graphics Corporation Well Data Management and EditingWorking with the Core icons

You can depth shift core data and flip core depths in LogEdit. Beforeediting core data, you must specify a set of core samples to which youwant to apply edits; this preliminary step is termed relating the corecurves. A new set of curves is created. You edit this set of core curves,not the original set. Core data are displayed as discrete points ratherthan as continuous curves. Each point is represented by a symbol. Youcan change the symbol type and size.

Relating Core Curves

By relating core curves, you can apply to other core curves the editsyou make to one selected core curve. For example, the core sample that

Documents

Well Data Mgmt