Capstone Project 1

1. Reservoir Characterization
Capstone Project Semester 1
PNG 490 – Team 26
April 29th 2014

2. Group Members
• Ferman Jabbari
• Luke Spinuzza
• Majid Al-Mujaini
• Michael Camus
• David Verm

3. Goals and Objectives
• Discretize and map the given formations
• Analyze log data
• Calculate expected recoverable oil in place
• Recommend further action with the field

4. Findings
• Based upon the data:
• 100 - 270 Million Barrels
• 100 Dollar per Barrel comes out 10 – 27 Billion Dollars
• Further develop the selected area

5. Procedure
Client received request for field analysis
Field discretization
Digitalized formation topography
Analyzed log data on 29 wells
Establish max, min & avg: water saturation & porosity
Interpolated values to entire reservoir
Using generated data & 3 D models to determine sweet spots

6. Geological Structure
• Penta Alpha was formed in the early cretaceous period
• Predict the ability to produce oil
• Types of lithology
• Limestone , sandstone, and minimal shale deposits
• Types of obstacles
• Drilling Break, and kick
• Pay zone rocks
• Sandstone

7. Discretization Process
• Analyzing contour map
• Drawing grids
• Construct surface map
• Surface Map of Penta Alpha Formation

8. 3-D Surface Map
Surface Map of Penta Alpha Formation

9. Evaluating Well logs
• Establish cut-offs
• Water saturation < .7 or 70%
• Gamma ray < 40 API
• Resistivity > 10 ohm-meters
• Determine Net Pay

10. Well log data gathering
• From porosity, water saturation and net pay thickness
• Determine maximum, minimum and average values
• Three distribution maps of porosity, water saturation and
net pay thickness

11. Average Water Saturation
Interpolation

12. Average Porosity Interpolation
• Average Porosity Interpolation

13. Net Pay Interpolation
• Net Pay Thickness Interpolation

14. Monte Carlo Stimulation
• Calculate Values within set ranges for:
• Recovery Factor of 0.2 to 0.4
• Formation Volume Factor of 1.05 – 1.08
• Calculated OOIP ranged
• 375 – 675 million barrels
• Calculated recoverable oil
• 100 – 270 million barrels

15. Moderate Estimate (50% confidence)

16. Conservative Estimate (90% confidence)

17. Area of Interest
• Determine the areas with higher barrels per acres from
recoverable oil in place
• P50 stimulation
• area of 3643 acres and produce around 34 million barrels.
• P90 stimulation
• area of 3643 acres and produces around 18.5 million barrels

18. Area of Interest 50 Percentile

19. Area of Interest 90 Percentile

20. Cumulative Oil in Place

21. Cumulative Recoverable Oil

22. Conclusion
• Valued at approximately 10 – 27 billion US Dollars
• A well drilled every 640 acres should be suitable in this
situation
• Potential revenue should be attributed to a water saturation
cut off of 70%
• Recommend entering phase two of drilling and preparing
wells for production

23. Reference
• Alsharhan, A.S., and A.E.M. Nairn. Sedimentary Basins and
Petroleum Geology of the Middle East. N.p.: Elsevier Science &
Technology, 1997. Print.
• Canty, Daniel. "Enhanced Oil Recovery Leaders in the Middle
East." Arabianoilandgas. ITP Bussiness Publishing Ltd., 11 June
2012. Web. 17 Apr. 2014.
• Doveton, John H. "Basic Well Log Analysis: Reading Rocks from
Wireline Logs." SEPM Shore Course No.29. 7 Apr. 2014.
Lecture.