Tim Carr - West Virginia Universitypages.geo.wvu.edu/~tcarr/Petroleum/Lecture...
Transcript of Tim Carr - West Virginia Universitypages.geo.wvu.edu/~tcarr/Petroleum/Lecture...
Well performed Reservoir Simulation represents the ultimate integration of geology, geophysics, petrophysics, production data analysis and reservoir engineering.
Understand the flow of multiple fluids in heterogeneous rock over time.
Gain insights into past, present and future reservoir performance not available by any other means.
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Role of geology, geophysics, petrophysics is to reliably approximate Stratigraphy Structure Geometry of Reservoir Flow Units Initial Fluid Distribution
Manage and quantify subsurface knowledge and uncertainties. Utilize sound geologic reasoning Support reservoir dynamics (fluid flow and history)
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Geologic Data Characterized by Sparseness Uncertainty Uneven Distribution
Apply various methods to quantify uncertainty
Final Static Model is a combination of: Accurate observation of real data (Deterministic
Component) Education, training and experience (Geologic Reasoning) Formalized guessing (Geostatistics)
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Reservoir
Symbol Definition
D Formation Top (Structure)
C Reservoir Continuity
Hn Net Thickness
𝝫 Porosity
Pcwo vs. Sw Water/Oil Capillary-Pressure
Pcgo vs. Sg Gas/Oil Capillary-Pressure
Fluid
Symbol Definition
Bo Oil Formation Volume Factor (FVF)
Bw Water FVF
Bg Gas FVF
𝞺o Porosity
𝞺w Water/Oil Capillary-Pressure
𝞺g Gas/Oil Capillary Pressure 9
Rock
Symbol Definition
D Formation Top (Structure)
Ht Gross Thickness
Hn Net Thickness
𝝫 Porosity
Pcwo vs. Sw Water/Oil Capillary-Pressure
Pcgo vs. Sg Gas/Oil Capillary-Pressure
Fluid
Symbol Definition
Bo Oil Formation Volume Factor (FVF)
Bw Water FVF
Bg Gas FVF
𝞺o Oil Density
𝞺w Water Density
𝞺g Gas Density 10
Rock
Symbol Definition
k Specific (Absolute) Permeability
Krg Kro Krw Gas, Oil, Water Relative Permeability
Cf Rock Compressibility
Fluid
Symbol Definition
Rs vs. p Gas in Solution vs. Pressure
Co Oil Compressibility
Cw Water Compressibility
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Log(K)
Phie
Geological 3D model
Structural framework (Seismic data)
Depositional model
Rock properties distribution
Lithology: facies, porosity and permeability
Depth of fluid contacts and fluid properties 17
Reservoir Simulation Requires Integration of Disciplines
Quantification
Reiteration
Important for Managing Reservoirs
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Assignments Exercise – Estimating HC Volumes
Due on Wednesday 4/29
Exercise – Mapping Due on Friday 5/1
Last Quiz Wednesday 4/29 Open at 1:00pm – Close at 11:00 on 5/1
Final Thursday 5/7 at 3:00-5:00pm
Discuss Current Energy Events Read Today in Energy for Tuesday (4/28) at
http://www.eia.gov/
Be Prepared to Discuss in Class – Friday (4/20)
Discussion Leader – Suliman Alhumaidi