Petroleum Reservoir Modeling Y Chang Outline Background Reservoir
Petroleum Reservoir Modeling Y. Chang
Outline • Background • Reservoir Simulation Modeling • Examples
Geology www. lonestarsecurities. com
Oil and Gas Reservoir www. geoscape. nrcan. gc. ca
Porosity • Porosity = pore-volume / bulk-volume – a measure of the void spaces in a material www. geo. vu. nl www. borntoexplore. org
Porosity Distribution www. kgs. ku. edu www. geus. dk
Darcy’s Law • Darcy’s Law – describes the flow of a fluid through a porous medium • Permeability – a measure of the ability of a material (such as rocks) to transmit fluids www. en. wikipedia. org/wiki/Darcy_law
Phase Diagram www. dreamstime. com www. imcampbell. com
Saturation • A measure of the fluid spaces in pores, e. g. , Oil saturation = oil-volume / pore-volume www. ukooa. co. uk www. statoilhydro. com
Petroleum Reservoir Modeling www. halliburton. com
Reservoir Modeling Process Fluid Data Rock Data Well Data: Core, Logs Geologic Model Upscalling Simulation Model Seismic Data + Oil/Gas/Water Production Well Data www. beicip-inc. com
Logs + Core Data Mohaghegh, 2000, SPE 58046
Logs + Seismic Data Amplitude Neutron porosity: Well 1 and 2 Mohaghegh, 2005, SPE 98012
Synthetic Reservoir Model
Permeability
Permeability
Initial Oil Saturation
Oil Saturation (2 years) Initial So
Gas Saturaton (2 years) Initial Sg
Field Production Rates
Well-13 Production Rates
Well-15 Production Rates
Well-17 Production Rates
Forecast Oil Production
Forecast Oil Prod. – 2 nd year Data
History Match Example Production Data Well PH-01 Results Da Silva, et al. , 2007, SPE 107371
Oil Saturation > 0. 65 (6 years)
Gas Saturation < 0. 15 (6 years)
In-fill Well? So>0. 65, 6 -year Sg<0. 15, 6 -year
Questions?
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