This document summarizes Drillinginfo's geological data components, including well header data, well log files, and correlation data for various unconventional plays. It describes the data available for six geographic regions across the United States, with a focus on key plays like the Niobrara, Bakken, Eagle Ford, Marcellus, and Wolfberry. Maps, cross-sections and type logs are provided as examples of the geological analysis and data visualization capabilities offered through Drillinginfo's Geological Data Center.

1. DI GEOLOGY
Data Components, Geologic Data
Center, and Correlations with an
Unconventional Focus
Lisa E. LaChance, Sr. Geologist
Mark C. Robinson, Director of Geological and Geophysical
Products

2. 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

3. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 3
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 Basin
West
East
Rockies
Mid Continent

4. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 4
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

5. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 5
• 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

6. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 6
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

7. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 7
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.

8. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 8
• 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

9. DrillingInfo’s Geological Data Center

10. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 10
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

11. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 11
• Well Logs
• Sample Logs
• Scout Books
• Scout Cards
• Well Files
• Maps
• Many others
Types of Data

12. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 12
Not so organized…..
Organized Data

13. Data Regions and Play Areas

14. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 14
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

15. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 15
Niobrara Shale – Rockies Region
LAS Coverage
Total 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 5,733
Niobrara B 3,388
Niobrara C 5,436
Fort Hays Sandstone 5,634
Codell Sandstone 4,903
Carlisle Shale 4,798
Source: DI Geology
Rockies Region Includes:
• Colorado
• Idaho
• Iowa
• Minnesota
• Montana
• Nebraska
• New Mexico
• North Dakota
• South Dakota

16. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 16
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

17. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 17
Niobrara Shale Trend – Isopach Map

18. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 18
Bakken – Rockies Region
LAS Coverage
Total 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) 1,293
Bakken (middle) 431
Bakken (lower) 403
Three Forks 473
Birdbear 374
Source: DI Geology
Rockies Region Includes:
• Colorado
• Idaho
• Iowa
• Minnesota
• Montana
• Nebraska
• New Mexico
• North Dakota
• South Dakota

19. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 19
Regional Stratigraphic Cross-Section - Bakken
Top of Bakken
Three Forks
Birdbear
Source: DI Geology

20. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 20
Eagle Ford Shale – Gulf Coast Region
Source: DI Geology
LAS Coverage
Total 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

21. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 21
Regional Stratigraphic Cross-Section - Eagle Ford Shale
Source: DI Geology
Buda Limestone
Austin Chalk
Eagle Ford

22. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 22
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

23. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 23
Marcellus Shale – East Region
LAS Coverage
Total 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 1,238
Mahantango 842
Marcellus 1,103
Union 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

24. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 24
Barnett, Wolfberry, Cline Shale – Permian Region
Source: DI-Geology
Permian Region Includes:
 New Mexico
 Texas
LAS Coverage
Total 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 2,084
Barnett 1,500
Cline Shale 811
Barnett
Wolfberry
Cline Shale

25. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 25
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

26. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 26
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 1,298
Surface Correlations in Miss Lime area 544
Fayetteville
Mississippi Lime
Granite Wash

27. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 27
DI Geology Contact Information
 Mark Robinson, Director of Geological and Geophysical Products
mrobinson@drillinginfo.com
512-519-5539
 Lisa LaChance, Sr. Geologist
llachance@drillinginfo.com
512-519-5530

28. Copyright © 2012, Drillinginfo, Inc. All right reserved. All brand names and trademarks are the properties of their respective companies. 28
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
– ?