Intro to Geolog6.6

Darren Smith

Geolog6.6-The Fast Lane to Formation Evaluation

• Petrophysical Analysis, Well Data Management, & Geological Interpretaion

Geolog6.6-Course Objective

• “This introductory course provides the geoscientist and technician with a working knowledge of Geolog. The course provides an overview of project and data structure; manual and graphic editing, data transfer, utility modules, cross-sections, working in multi-well projects and single well layouts. The course is centered around hands-on exercises, which illustrate commonly used features and functionalities”

• Courses focusing on Deterministic Petrophysics, Wellbore Geophysics, Facimage, and other subjects are available. Please visit the Customer Hub to view scheduled courses.

Course Outline: Geolog6.6 & Well Log Anaylsis

• Day One:• Preliminaries: Create & manage projects.

Geolog6.6 behavior. Help?• Data Loading: Std. & Custom Formats• Data QC & Editing: Merge, depth, &

more• Well Log Anaylsis

Course Outline: Geolog6.6 & Well Log Analysis

• Day Two• Project Analysis, “The Big Picture”• Analyze Project Dataset• Develop Project Basesmap• Determine Candidate Wells for Cross

Section• Build, Correlate, & Interpret a Cross

Section• Generate Product & Present Findings . . .

Geolog6.6 Workflow by Application

Section 1. MAIN MENU-Geolog6.6 Basics

Section 1. MAIN MENU-Geolog6.6 Basics

• Launching Geolog• 1. PPM (Paradigm Product Manager)• 2. Command Prompt: geolog6.6/bin/geolog6• Open Existing Project• Project Structure• Deregister an Existing Project• Create a New Project• Geolog Behavior• Help• Feedback

Launching Geolog6.6-Paradigm Product Manager

Geolog6.6 Splash Screen

Open an Existing Project

• Project selection GUI lists

projects available to the user • Tabs at top can delimit project

parameters• Possible to search for existing

projects• Naming convention:

project_name@host

Geolog Basics pg. 61

Geolog6.6 Project Directories

• /Your_Project/• /bin/ executables specific to the project• /data/ houses raw data files; LAS, ASCII, DLIS, TIF• /layouts/ log layouts, cross plots, histograms• /loglan/ log language, user created code to process

logs• /plots/ graphic files for plotting or other applications• /reports/ pay summaries, info on data loads, .txt

& .pdf• /specs/ data loading specs, module parameters• /wells/ well data stored as *.well & well lists

Geolog Basics pg. 6

Deregister a Project.

Useful for:• Whenever analysis is completed or abandonment occurs• Limiting load on server & network• Make the project & data less visible to others

Geolog Basics pg. 65

Deregister a Project

• DOES NOT delete the data

• Project directories & data remain in original location

• Data is not visible by geolog until the project is recreated (reregistered)

Geolog Basics pg. 65

Create a New Project

• All names are suitable• Avoid use of “@”• Use an “_” in place of

spaces• Public & private projects

Geolog Basics pg. 59

Geolog6.6 Behavior

• Supported OS’s: Solaris, Irix, Linux, Win2K/XP• Geolog6.6 now runs windows native!• Developed on Unix & retains Unix behavior• MB1: select item• MB2: drag item & duplicate• MB3: options• MDI-Cursor position/attribute is reflected in all open

views/windows• Browser Bar project influences all sub-apps• Feedback

Geolog Basics pg. 7

Geolog6.6 Help

• Indexed online help• Search for keywords &

phrases in documentation• Adobe6.0 recommended

Geolog Basics pg. 46

Geolog6.6 Feedback

• Running dialog of all executions & errors• User Configurable• Great for trouble-

shooting

Geolog Basics pg. 35

Section 2. CONNECT Data Loading

Section 2. CONNECT-Data Loading

• Load & Unload Data to & from Geolog Projects• Load Standard Formats: LAS, LIS, TIF, BIT• Load Custom Formats: ASCII, Geolog ASCII• Transfer Data From Project to Project• Establish Mnemonic Conventions• File Conversions: LAS to TIF & others• Load & Unload Data to & from non-• Geolog Projects (OW & Geoshare)

Connect-Unload LAS3 file

• Choose: Connect-Unload

• Select a Well & Unload

format

Connect pg. 41

Unloading a LAS3 Format File

• Pick sets/curves & start unload Connect pg. 45

ASCII LOAD.TXT, CSV, DAT, etc.

• Load data files created in a spreadsheet application

• User Defined; sets, & curves

Connect pg. 25

Project to Project (copy data)

1. Choose Project to Project

2. Select input project (stars) and desired wells to copy. Then select target project (moons).

Connect pg. 48

Project to Project (copy data)

• Select import sets & curves

Connect pg. 48

Connect-File to File (convert file formats)

Connect pg. 51

Connect-File to File, LAS to LIS/TIF

Connect pg. 51

Section 3. WELL-Data QC

Section 3. WELL-Data QC

• Create Log Layouts to View Data• Append Runs/Merge Logs• Despike• Normalize • Resample• Fill Missings• Environmental Corrections

Section 3. Well-Log Layout

Well pg. 12

• 11 Track Types• Datum to MD, TVD,

TVDSS, etc.• Use Layouts for

Graphical Editing• Used for Formation

& Dip Editing

Merge Runs

Well pg. 81

• Graphical merging of logs

• Merge from end to end or splice in sections of logs

Despike Logs (Curve Insert)

Well pg. 85

• Smooth / despike curves with mouse graphically

• Module Interface: General-Log Edit-Despike

Normalize Logs-Using GR Histogram & Linear Transform

Model Well Well to Edit w/ Ghost of Model Well

Edited Well Normalized to Model Well

(not in tutorial, see Help-Xplot, Linear Transform)

Resample

Well pg. 131

• Irregularly sampled data• Reduce sampling rate• Reduce .well file size

Fill Missings

• Performs a linear interpolation across gaps

• Can occur with LWD data

(not in tutorial, use Well-General-Log Edit-Fill Missings)

Environmental Corrections

• Environmental corrections available for common logging tools

• Useful for older logs w/out corrections or as a comparison tool to achieve best correction e.g. SS/LS/DOL?

(not in tutorial, use Well-Petrophysics-Environmentals)

Section 4. WELL-Log Analysis

Section 4. Well Log Analysis

• Log Scanning for Zones of Interest• Using Basic Well Log Analysis method of Asquith and

Krygowski

Source: Basic Well Log Analysis. Asquith & Krygowski 2004

Log Scanning-Step 1. Find Clean Zones

• Mudlogs• Gamma Ray• SP• VSH (GR & SP)

Log Scanning- Sandstones or Carbonates?

• Consult Mudlog• Core Data• Offset Wells• Depositional

Environment

Log Scanning-Resistivity

• Scan Resistivity for High Values

• Spot Shallow & Deep Separations

• Invasion-Asses Permeability

Log Scanning-Evaluate Porosity

• NPHI-Possible Gas Effect• DPHI• SPHI • PHIE• Define Zones of Interest

Section 5. SECTIONMulti Well Analysis

Section 5. PROJECT-Multi-Well Anaysis

• Tool to Visualize “The Big Picture”-Mapsheet• Analyze Project Dataset-Well Catalog• Contour Well Data• Determine Wells for Cross Section-Well Catalog

& Mapsheet

Mapsheet Uses

• Project Overview

• Post/Manage Cultural Data

• Create X- Sections

• View Well Path projections

• Contour Data• Graphically

Select Wells to Process

Project pg. 15

Well & Section Catalog

• Text based project management

• Insert, copy, & delete of wells, sets, logs, & sections

• Search utilities• Edit well header

data• & more

Project pg. 49

Well & Section Catalog Search Functions

• Search project database for specific information• Build search criteria to constrain results• Uses: Flag data, specify wells to process, use as

starting point for processing

Project pg. 52

Contour Well Data. (Malabar Fmn. Thickness)

Project pg. 41

Section 6. Section-Multi Well Correlation

Section 6. SECTION-Multi-Well Correlation

• Construct a Cross Section Graphically • Spatially Define a Cross Section• Establish Correlations• Interpret Cross Section• Manipulate & Manage Existing Cross Sections

SECTION-Define a Section Graphically from Mapsheet

• Insert sections using the mouse

• Project multiple wells to the section

• Well spacing is fixed

Section pg. 3-6

SECTION-Define a Section Spatially.

Section pg. 11

• Allows for user defined spacing

SECTION-Establish Correlations

Section pg. 15

• Correlate any tops type interpolated curves

• Datum to a depth or formation

• Structural & stratigraphic cross sections

SECTION-Add User Interpretations

Section pg. 32

Section 7. ARTIST-Graphic Utilities

Section 7. ARTIST-Graphic Utilities

• Create Standard Log Header• Create Fill Pattern• Create Marker• Create Montages

ARTIST-Standard Well Header w/ Variable Text

• Header format obtains data from active well

• Well header, constants, & other data is available

• Use header for all projects & wells

Artist pg. 45

ARTIST-Create Fill Pattern For Use in Layouts, Cross Sections, & Artist Images

Artist pg. 42

ARTIST-Create Marker For Use in Layouts (point tracks), Xplots, & Artist Images

Artist pg. 40-44

ARTIST-Create Montage to Present Findings

Artist pg. 51

Section 8. Workflow Review & Summary

Section 8. Workflow Review & Summary

Geolog6.6 Project Directories (a review)

• /Your_Project/• /bin/ executables specific to the project• /data/ houses raw data files; LAS, ASCII, DLIS, TIF• /layouts/ log layouts, cross plots, histograms• /loglan/ log language, user created code to process

logs• /plots/ graphic files for plotting or other applications• /reports/ pay summaries, info on data loads, .txt

& .pdf• /specs/ data loading specs, module parameters• /wells/ well data stored as *.well & well lists

Geolog Basics pg. 6

Section 8. The Product

• Archives• Means for Asset Management• Standardized Data Formats-Layouts, Xplots,

Histograms• EPOS3 Datastore: Data is Available to All

Paradigm Products

Advanced Geolog Courses Offered

• Deterministic Petrophysics• Facimage• Geomage• Geophysics• Geosteering• Customized Training

The End.Thanks!