Di Geology

DI GEOLOGYData Components, Geologic Data Center, and Correlations with an

Unconventional Focus

Lisa E. LaChance, Sr. GeologistMark C. Robinson, Director of Geological and Geophysical

Products

Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 2

DI-Geology

• DI Geology – Data Components

• Geological Data Center

• Correlations with an Unconventional Focus


The red on the map above indicates log coverage that exists for our regions to date. Total of 54,926 digital well logs as of 3/1/2013.

DI-Geology – Six Geographic Regions

Gulf Coast Permian BasinWest EastRockiesMid Continent


Niobrara, Rockies Region * LAS log files for 6,600+ wells* 3,000+ correlations

Eagle Ford, Gulf Coast Region* LAS log files for 5,400+ wells* 1,475 correlations

Wolfberry, Permian Region* LAS log files for 1,180 wells* 2,075 correlations

DI-Geology – Geologic Data Subsets

Niobrara

Wolfberry

Eagle Ford


• Basic well header information including: API number, latitude, longitude, total depth, elevation, elevation reference, well name, etc.

• Provided in an excel spreadsheet, which the client will be able to download through DNA.

• File can be reformatted and a load template created to import the data using clients own software.

Component 1 – Well Header Data


Component 2 – Well Log Data

• Available through DNA to download via folders by • Geological Play

• Grouped by folders for each of the Geological Play areas we have defined (Niobrara, Eagle Ford, and Wolfberry)

• Geographic Region• Grouped by folders for each of the six geographic regions outlined, then by State

and County

• Log (.LAS) files named and sorted by API number• Option to download individually or zipped by County


Component 3 – Correlations Data• Correlated surfaces for each region, including: API number, DI’s surface name, elevation,

depth, and project (region) name• Provided in an excel spreadsheet, which the client will be able to download through DNA. • File can be reformatted and a load template created to import the data using clients own

software.• Direct exports also available from SMT and Landmark Well OWX (ascii) format.


• FormationNameReference.xlsx - list of all the DI Surface Names (Also referred here as SMTPickName) found in the correlations files and their corresponding geologic age, formation name, regional source project, etc.

Correlation Naming Conventions

DrillingInfo’s Geological Data Center


DrillingInfo – Geological Data Center

Acquired company with significant collection of old data

Multiple clients wanted to donate old “inactive” well data

Private Log Library members wanted to dissolve library but preserve collection

Storage shed of deceased father-in-law filled with oil company records


• Well Logs• Sample Logs• Scout Books• Scout Cards• Well Files• Maps• Many others

Types of Data


Not so organized…..

Organized Data

Data Regions and Play Areas


San Joaquin Basin – West Region

Source: DI Geology

West Region – Wells and LAS Coverage

Number of Wells in West Region 311,158

Total LAS Files in West Region 307

Surface Correlations – Temblor 25

States Included in Region:• Arizona• California• Colorado• Nevada• New Mexico• Oregon• Utah• Washington

LAS Coverage


Niobrara Shale – Rockies RegionLAS CoverageTotal LAS Files in Rockies Region 14,455# Wells in Rockies Region 288,771

# Wells in Niobrara Area 171,268# LAS Files available in Niobrara area 9,034# Wells Penetrating Niobrara with Correlated Logs 5,673

Surface Correlations Niobrara A 5,733Niobrara B 3,388Niobrara C 5,436Fort Hays Sandstone 5,634Codell Sandstone 4,903Carlisle Shale 4,798

Source: DI Geology

Rockies Region Includes:• Colorado• Idaho• Iowa • Minnesota• Montana• Nebraska • New Mexico • North Dakota• South Dakota


Regional Cross-Section - Niobrara

Top of Niobrara

Fort Hayes

Carlile

Greenhorn

D Sand

• Correlations made on a regional basis using high density cross sections

• 60+ wells displayed here, W to E• Type of display similar to seismic interpretation • Used to easily identify major flooding surfaces and

formations

Source: DI Geology


Niobrara Shale Trend – Isopach Map


Bakken – Rockies RegionLAS CoverageTotal LAS Files in Rockies Region 14,455# Wells in Rockies Region 288,771

# Wells in Bakken Area 21,862# LAS Files available in Bakken area 2,107# Wells Penetrating Bakken with Correlated Logs 1,293

Surface Correlations Bakken (top) 1,293Bakken (middle) 431Bakken (lower) 403Three Forks 473Birdbear 374

Source: DI Geology

Rockies Region Includes:• Colorado• Idaho• Iowa • Minnesota• Montana• Nebraska • New Mexico • North Dakota• South Dakota


Regional Stratigraphic Cross-Section - Bakken

Top of Bakken

Three Forks

Birdbear

Source: DI Geology


Eagle Ford Shale – Gulf Coast Region

Source: DI Geology

LAS CoverageTotal LAS Files in Gulf Coast Region 16,331# Wells in Gulf Coast Region 558,954

# Wells in Eagle Ford Area 44,705# LAS Files available in EF area 5,432

# Wells Penetrating EF with Correlated Logs 1,475

Surface Correlations Austin Chalk 1,700+Eagle Ford Upper 1,500+Eagle Ford Lower 1,200+

Buda Limestone 1,500+

Gulf Coast Region Includes:• Alabama• Arkansas• Florida• Georgia• Louisiana• Mississippi• Texas


Regional Stratigraphic Cross-Section - Eagle Ford Shale

Source: DI Geology

Buda Limestone

Austin Chalk

Eagle Ford


CLARK-HABY 1 Yates Energy Corporation

Karnes County

Table of Calculated Log Attributes for the Lower Eagle Ford below.

Type Log - Eagle Ford Shale

Austin Chalk

Upper Eagle Ford

Lower Eagle Ford

Buda Limestone

Source: DI Geology


Marcellus Shale – East RegionLAS CoverageTotal LAS Files in East Region 2,251# Wells in East Region 799,587

# Wells in Marcellus Area 234,237# LAS Files available in Marcellus area 1,842# Wells Penetrating Marcellus with Correlated Logs 1103

Surface Correlations Tully 1,238Mahantango 842Marcellus 1,103Union Springs 806

Source: DI Geology

East Region Includes:• Connecticut

• Delaware• Illinois• Indiana• Iowa• Kentucky • Maryland • Michigan• New Hampshire

• New York• North Carolina• Ohio• Pennsylvania• South Carolina• Tennessee• Virginia• West Virginia• Wisconsin


Barnett, Wolfberry, Cline Shale – Permian Region

Source: DI-Geology

Permian Region Includes:

New Mexico Texas

LAS CoverageTotal LAS Files in Permian Region 19,124# Wells in Permian Region 551,284

# LAS Files available in project with correlations 15,192

# Wells Penetrating Wolfberry with Correlated Logs 2,084

# Wells Penetrating Barnett with Correlated Logs 2,525

Surface Correlations Wolfberry 2,084Barnett 1,500Cline Shale 811

Barnett

Wolfberry

Cline Shale


North-South Stratigraphic Cross-Section, Martin Co Texas

Lower Clearfork

Wolfcamp

Spraberry

• Gamma-ray logs are facies-shaded to highlight clean limestone and sandstone units• 28 Wells• Flattened on lower spraberry


Granite Wash, Fayetteville, Mississippi Lime - MidContinent Region

Source: DI-Geology

MidContinent Region Includes:

Arkansas Kansas Missouri New Mexico Oklahoma Texas

LAS Coverage

Total LAS Files in MidContinent Region 2,961

# Wells in MidContinent Region 733,694

# Wells in Granite Wash Area 55,872# LAS Files available in Granite Wash area 1,298Surface Correlations in Miss Lime area 544

Fayetteville

Mississippi Lime

Granite Wash


DI Geology Contact Information

Mark Robinson, Director of Geological and Geophysical [email protected]

512-519-5539

Lisa LaChance, Sr. [email protected]

mailto:[email protected]

mailto:[email protected]


Next Steps• How do we make the product better?

– Additional areas needing investigation– Additional formations needing correlation– Additional geological analysis

• Delta LogR analysis• Velocity models• Rock Properties (Poisson Ratio, etc.)• ….

• Action Items for the next meeting– ?

Technology

Di Geology