Tim Carr - West Virginia Universitypages.geo.wvu.edu/~tcarr/Petroleum/Lecture...

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Tim Carr - West Virginia University

Transcript of Tim Carr - West Virginia Universitypages.geo.wvu.edu/~tcarr/Petroleum/Lecture...

Tim Carr - West Virginia University

Fekete 2

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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Schlumberger Oilfield Glossary 6

Gustavo Gabriel Becerra et al. 2011 7

Porosity

QW

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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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13 Jon Kleppe

14 Jon Kleppe

15 Jon Kleppe

16 Jon Kleppe

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

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Gustavo Gabriel Becerra et al. 2011 19

Gustavo Gabriel Becerra et al. 2011 20

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