Impact of Pore Confinement on Production Behavior and GOR Profiles of Unconventional Reservoirs
- T. Calisgan (Colorado School of Mines) | E. Ozkan (Colorado School of Mines) | T. Firincioglu | H. Sarak | C. Ozgen (NITEC LLC)
- Document ID
- Society of Petroleum Engineers
- SPE Annual Technical Conference and Exhibition, 9-11 October, San Antonio, Texas, USA
- Publication Date
- Document Type
- Conference Paper
- 2017. Society of Petroleum Engineers
- 1.2.3 Rock properties, 5.2.1 Phase Behavior and PVT Measurements, 5 Reservoir Desciption & Dynamics, 5.5 Reservoir Simulation, 1.6.6 Directional Drilling, 5.2 Fluid Characterization, 5.1 Reservoir Characterisation, 5.1 Reservoir Characterisation, 1.6 Drilling Operations
- reservoir simulator, pvt in nano-pores, unconventional reservoir simulation
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This paper extends the discussion of the impact of pore-size distribution and connectivity on the productivity and GOR behavior of wells in unconventional reservoirs to more complex petrophysical heterogeneities and layered and compartmentalized systems. Two well congurations are considered: four vertical wells located at the corners of the grid and one horizontal well located in the middle layer of a three-layer system. A black-oil simulator, which includes the effects of capillary-pressure on phase behavior and gravity, is used in the study. Several simulation models are considered to investigate the impact of single-, dual-, and n-porosity formulations on oil and gas production profiles for different capillary-pressure distributions varying by layers or regions. Results accentuate the earlier conclusions that pore-size distribution and other petrophysical heterogeneities have a stronger effect than the magnitudes of the pore sizes on the productivity and GOR of unconventional wells.
|File Size||2 MB||Number of Pages||20|
Firincioglu, T., Ozgen, C., and Ozkan, E. 2013. An Excess-Bubble-Point-Suppression Correlation for Black Oil Simulation of Nano-Porous Unconventional Oil Reservoirs. Presented at the SPE Annual Technical Conference and Exhibition, New Orleans, Louisiana, 30 September-2 October. SPE-166459. http://dx.doi.org/10.2118/166459.
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