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FWS 06 Courtesy of ExxonMobil Lecture 15 Block 7 Bonanza Basin Discovery Well Block 8 Salt Diapir Headlines: Alpha Wildcat Finds Thick Oil Zone! L 15 –

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Presentation on theme: "FWS 06 Courtesy of ExxonMobil Lecture 15 Block 7 Bonanza Basin Discovery Well Block 8 Salt Diapir Headlines: Alpha Wildcat Finds Thick Oil Zone! L 15 –"— Presentation transcript:

1 FWS 06 Courtesy of ExxonMobil Lecture 15 Block 7 Bonanza Basin Discovery Well Block 8 Salt Diapir Headlines: Alpha Wildcat Finds Thick Oil Zone! L 15 – Beyond Exploration

2 FWS 06 L 15 – Next StepsCourtesy of ExxonMobil Our Exploration Flowchart Wildcat Drilled Assess Prospects Success Interpret Seismic Data Process Seismic Data Acquire Seismic Data Capture Prime Areas Identify Opportunities Management Approved Wildcat Well L 15 – Beyond Exploration Courtesy of ExxonMobil

3 FWS 06 Courtesy of ExxonMobil Our Assessment Results Million Oil Equivalent Barrels Alpha Prospect – Main Compartment - Risked Gas Cap & Oil Leg Gas Only 62 % COS 51 % Chance of Finding More Than the Economic Minimum 62% Chance to find any hydrocarbons 51% Chance to find 100 MBOE 5% Chance to find 400 MBOE 100 Oil Only Economic Minimum L 15 – Beyond Exploration

4 FWS 06 Courtesy of ExxonMobil Congratulations! A Huge Success YOUR exploration well on the Alpha prospect discovered an estimated 325 MBO Alpha Prospect Block 7 Bonanza Basin Discovery Well Block 8 Salt Diapir L 15 – Beyond Exploration Million Oil Equivalent Barrels Alpha Prospect – Main Compartment - Risked Gas Cap & Oil Leg Gas Only 62 % COS 100 Oil Only Economic Minimum

5 FWS 06 Whats Next? Courtesy of ExxonMobil Exploration would drill one or two confirmation wells to verify there is enough HCs to make some money (Value > Costs) If results continue to be good, the FIELD would pass on to Development or Production people SuccessUneconomic Drill Wildcats Assess Prospects Confirmation Well Success Interpret Seismic Data Process Seismic Data Acquire Seismic Data Capture Prime Areas Identify Opportunities To Development Or Production L 15 – Beyond Exploration

6 FWS 06 Courtesy of ExxonMobil Delineation Well Alpha Prospect Block 7 Bonanza Basin Discovery Well Block 8 Salt Diapir Delineation Well 6 Months later… A delineation well is completed to the NE An OWC is found at 4500 m – the same depth as in the discovery well The porosity is slightly better – 26% versus 23% in the discovery well The delineation well has confirmed enough oil to merit field development – EUR now set at 348 MBO L 15 – Beyond Exploration

7 FWS 06 Courtesy of ExxonMobil G&G in Development Can we refine our picture of the distribution of oil at Alpha? Is the reservoir a single unit, or is it segmented (separate regions to drain)? How many wells and where should they be drilled? What sort of facilities (platform?) will we need? How can we speed-up time to first oil? What uncertainties remain? Exploration has drilled a discovery and a delineation well. The ultimate recover for Alpha is estimated to be 338 MBO, which greatly exceeds the economic threshold of 100 MBO Questions: L 15 – Beyond Exploration

8 FWS 06 Courtesy of ExxonMobil We Need More Detail Reservoir Map at the end of Exploration Reservoir Map at the end of Development L 15 – Beyond Exploration

9 FWS 06 Courtesy of ExxonMobil Some Questions … #4 #3 #2 #1 Why did they drill well #3? Why? Where would you place well #5? Why did they drill well #4? L 15 – Beyond Exploration

10 FWS 06 Courtesy of ExxonMobil Data for Development Data Used for ExplorationData Reprocessed or Reshot for Development And Production We may need better quality data to address development needs L 15 – Beyond Exploration

11 FWS 06 Courtesy of ExxonMobil G&G in Production How should we manage the field so as to maximize our investments? Can we monitor how oil is being swept out of the reservoir? What about injection wells and enhanced recovery? Is there more oil in the vicinity – either at deeper depths or in nearby traps? Can we build a computer model of the field that matches existing production data? If so, we can test future recovery with different drilling scenarios. Production has begun at Alpha. The initial production rates are as expected. Questions: L 15 – Beyond Exploration

12 FWS 06 Courtesy of ExxonMobil Reservoir Simulation Geologic Model Reservoir Simulation Oil Production Production Time HISTORY MATCH L 15 – Beyond Exploration Actual in Blue Modeled in Red

13 FWS 06 Courtesy of ExxonMobil The Value of G&G to an Oil Company G&G work is done to add HC reserves (volumes) –New discoveries –More from discovered producing zones –Additional producing zones Get the most reserves at the lowest cost –Invest in the right basins –Drill in the optimum locations –Correctly assess what can be recovered –Avoid unnecessary wells L 15 – Beyond Exploration

14 FWS 06 Courtesy of ExxonMobil Lets Fast Forward a Number of Years The Alpha field has been producing for 5 years We want to maximize production L 15 – Beyond Exploration

15 FWS 06 Courtesy of ExxonMobil An integration of all geologic, geophysical, petrophysical and interpreted or conceptual information about a reservoir into a single 3D numerical description of that reservoir Structural Interpretation Stratigraphic Interpretation Petrophysical Interpretation Geophysical Interpretation A Geologic Model L 15 – Beyond Exploration

16 FWS 06 Courtesy of ExxonMobil Each cell can be populated with rock & fluid Properties: –Facies –Porosity –Permeability –Fluid Saturation –Etc. 1m 75 m Perm 250 mD Sand Shale Perm 0.1 mD 50 m A Geologic Model L 15 – Beyond Exploration

17 FWS 06 Courtesy of ExxonMobil How do we use this information? Field development planning Field production optimization Reservoir surveillance Using a Simulation Time (yrs) Oil Rate Time (yrs) Oil Rate Base Case EOR Infill Drilling Actual Modeled L 15 – Beyond Exploration

18 FWS 06 Courtesy of ExxonMobil In Summary The O&G Industry needs top-notch scientists and engineers to work on a vast array of problems The assignments are challenging, fast-paced, and multi-disciplined Often your work is tested in the matter of months Great Ideas + Good Science -> Success L 15 – Beyond Exploration


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