Reservoir Characterization Capstone Project Semester 1 PNG 490 – Team 26 April 29 th 2014.
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Transcript of Reservoir Characterization Capstone Project Semester 1 PNG 490 – Team 26 April 29 th 2014.
![Page 1: Reservoir Characterization Capstone Project Semester 1 PNG 490 – Team 26 April 29 th 2014.](https://reader036.fdocuments.net/reader036/viewer/2022062423/56649e0d5503460f94af65c4/html5/thumbnails/1.jpg)
Reservoir CharacterizationCapstone Project Semester 1
PNG 490 – Team 26April 29th 2014
![Page 2: Reservoir Characterization Capstone Project Semester 1 PNG 490 – Team 26 April 29 th 2014.](https://reader036.fdocuments.net/reader036/viewer/2022062423/56649e0d5503460f94af65c4/html5/thumbnails/2.jpg)
Goals and Objectives
• Discretize and map the given formations
• Analyze log data
• Calculate expected recoverable oil in place
• Recommend further action with the field
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Findings
• Based upon the data:
• 100 - 270 Million Barrels
• 100 Dollar per Barrel comes out 10 – 27 Billion Dollars
• Further develop the selected area
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Procedure
Using generated data & 3 D models to determine sweet spots
Interpolated values to entire reservoir
Establish max, min & avg: water saturation & porosity
Analyzed log data on 29 wells
Digitalized formation topography
Field discretization
Client received request for field analysis
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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
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Discretization Process
• Analyzing contour map
• Drawing grids
• Construct surface map
• Surface Map of Penta Alpha Formation
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3-D Surface MapSurface Map of Penta Alpha Formation
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Evaluating Well logs
• Establish cut-offs• Water saturation < .7 or 70%• Gamma ray < 40 API • Resistivity > 10 ohm-meters
• Determine Net Pay
![Page 9: Reservoir Characterization Capstone Project Semester 1 PNG 490 – Team 26 April 29 th 2014.](https://reader036.fdocuments.net/reader036/viewer/2022062423/56649e0d5503460f94af65c4/html5/thumbnails/9.jpg)
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
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Average Water Saturation Interpolation
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Average Porosity Interpolation • Average Porosity Interpolation
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Net Pay Interpolation• Net Pay Thickness Interpolation
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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
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Moderate Estimate (50% confidence)
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Conservative Estimate (90% confidence)
![Page 16: Reservoir Characterization Capstone Project Semester 1 PNG 490 – Team 26 April 29 th 2014.](https://reader036.fdocuments.net/reader036/viewer/2022062423/56649e0d5503460f94af65c4/html5/thumbnails/16.jpg)
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
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Area of Interest 50 Percentile
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Area of Interest 90 Percentile
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Cumulative Oil in Place
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Cumulative Recoverable Oil
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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
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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.