1. Luff Exploration Company Mark Sippel, Consulting Engineer
Intelligent Computing System for Reservoir Analysis and Risk Assessment of Red River Formation Amor Field, Bowman County, ND DE-FC22-00BC15123
Luff Exploration Company
Mark Sippel, Consulting Engineer

2. Statement of Problems
Integrating Seismic, Geologic and Engineering Data
Transforming Seismic Attributes to Reservoir Attributes in Seismic Thin Beds
Predicting Reservoir Limits on Small Structural Features with Limited Well Control
Identifying Tilted Oil-Water Contacts

3. Location of Amor Field Demonstration Site

4. Intelligent Computing System Tool Kit
ICS is a Collection of Software Tools and Utilities
Designed for Primary Use with 3D Seismic But Can Be Used in Areas of High-Density 2D Seismic Grids (1/2 mile spacing)
It May Be Used without Seismic in Fields with Large Number of Wells (>30) for Reservoir Characterization
Luff is Using the ICS Tool Kit for Predicting Reservoir Limits and Reservoir Attributes in 6-ft Dolomite Beds in the Red River Fm.
Transformed Seismic-Reservoir Attributes are Used in Simulation Studies and Parameters for Waterflood Unitization

5. Intelligent Computing System Menu

6. ICS Strategy for Reservoir Characterization
Level 1
Level 2
Level 3
Level 4
Forward
Seismic
Modeling
Transformed
Seismic-Reservoir
Attributes
Transformed
Seismic-Production
Attributes
Seismic Data
Regional
Depositional
Setting
Well
Geologic-Reservoir
Data
Well
Production
Data
Regional
Structural
Setting
Geological
Data
Engineering
Data

7. ICS Transformation to Production Attributes
Transformed
Seismic Attributes
Structural
Attributes
Depositional
Attributes
Transformed
Production
Attributes
Rock-Quality
Attributes
Well Production
Training
Entrapment
Attributes
Growth-Thinning
Attributes

8. Type Log for Red River Formation
The Upper Red River
Consists of Four Episodes
in Shallow Shelf Carbonate
Setting
Main Reservoirs are:
Red River B Zone
Red River D Zone
Amor Field mostly B Zone
6 - 8 ft Thick

9. Red River B Zone Type Log
Top
Red River
B Zone
100
30% 0%
Gamma Ray
Neutron-Density Porosity

10. Forward Seismic Modeling
0.7
0.8
0.9
1.0
1.1
Normal
Reverse
Polarity
Time
Seconds P1 P2 T1 T2
Duperow
Interlake
Red River
Base
D zone
Winnipeg
Mission
Canyon
Forward Seismic Modeling
Upper Red River
Reservoirs Are
“Seismic Thin Beds”
Reservoir Information
Contained in Two
Peak-Trough Pairs
Each Event
Consistently Labeled
in Every Seismic Survey

11. Understanding Seismic Attributes from Synthetic Seismograms
Weak Amplitude
Response
Strong Amplitude
Reponse
0.0
1.0
Time - Seconds
Interlake
Red River
Winnipeg P1 T1 P2
Low Porosity
High Porosity T2

12. Training for Seismic Transforms Comes from Multiple 3D Seismic Surveys
Amor Field

13. Amor Field, Red River Depth Map
Seismic Data Transformed
to Depth Structure
Does Not Adquately
Define Reservoir Limits
Feet
Average TVD
is 9300 feet

14. Seismic Attributes Transformed to Oil Cut
Average Oil Cut
First 24 Months
The Oil-Cut Map
is Tilted with
Respect to
Present-Day
Structure

15. Seismic Attributes Transformed to Oil Rate
100 bopd
50 bopd
20 bopd
10 bopd
Average Oil Rate
First 24 Months

16. Predicted D Zone kh/uB (md-ft/cp)
Seismic Attribute
Transform kh/uB
Useful for
Reservoir Simulation
Log of kh/uB
Drill-Stem Tests

17. Predicted D Zone Porosity-Feet (phi-h)
Seismic Attribute
Transform phi-h
Useful for
Reservoir Simulation
Porosity- feet

18. B Zone Reservoir Attributes from Depositional Setting (280 Wells)

19. Predicting B Zone Deposition Setting

20. Seismic Transform to B Zone Depositional Setting Thickness
Predicted
A + B
Cycle
Thickness
(feet)

21. Entrapment Pressure Amor Field, Red River B Zone
(psi)

22. Amor Field, Red River B Zone Oil Cut
Production
Laterals
Planned
Injection Well A
Predicted
Oil Cut
at Initial
Conditions

23. Initial Production from Horizontal Demonstation Well A

24. Composite Production from 3 Horizontal Completions

25. Composite Production with Projections Amor South Red River Unit
Oil Rate Barrels per Month

26. ICS Example with 2D Seismic
Average Oil Cut
First 24 Months

27. Conclusions
Intelligent Computing System Successfully Used to Characterize Seismic Thin Beds in Red River Fm.
Training from Normalized Seismic Data at Multiple 3D Surveys Increases Control Population
Seismic and Regional Well Data Analyzed with ICS
Reservoir and Productive Limits Predicted with ICS
Horizontal Completions Targeted from ICS Interpretations
Incremental Primary plus Secondary for Amor Field is Projected at 1,100,000 bbl
Five Similar Projects Are Planned for 2003 and 2004

28. Conclusions cont. Keys to Successful Re-development 3D Seismic
Reservoir Characterization Based on ICS
Understanding Depositional Setting and Relationship with Reservoir Development
Better Computer Simulation Models from Seismic-Resevoir Attribute Transformations
Targeted Horizontal Drilling
Luff is Re-Developing All Operated Fields that Were Discovered in the 1970’s and 1980’s
Many Plugged or Uneconmic Producers Re-entered and Drilled Horizontally, Resulting in bopd

29. Horizontal Re-Entry Example 1

30. Horizontal Re-Entry Example 2

31. Horizontal Re-Entry Example 3

32. Horizontal Re-Entry Example 4

33. Horizontal Re-Entry Example 5

34. Software Availability
Visit the Project Website at
Download ICS Files and Project Reports
Alternatively, Request a CD-ROM by Mail