New prospects of water and CO2 flooding in linear and five spot patterns: Numerical simulation case study
Publish place: 3rd Iranian Petroleum Engineering Congress
Publish Year: 1390
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
IPEC03_061
تاریخ نمایه سازی: 7 تیر 1393
Abstract:
Improving oil recovery is recognized as the major challenge and target at different stages of an oil field development. In this paper, a numericalsimulation approach has been selected for water and CO2 flooding in linearand five spot patterns. It has been demonstrated that a proper and carefulanalysis of core experimental results is necessary for optimum representation of the reservoir simulation model, since an adverse effect of temperature(above a critical temperature) on relative permeabilities significantly affects the water flooding simulation results. For CO2 flooding in five spot patterns, ithas been observed sweep efficiency directly depends on viscous to gravity ratio. By decreasing the gas flow rate, the viscose force is reduced; moreoverby increasing the time, gas has enough time to segregate completely from oil bearing zone. The final oil recovery is reduced significantly and gasbreakthrough time is occurred earlier as the ratio of viscose to gravity force decreases. The irregular global with irregular local grid refinement of production and injection wells has been suggested in terms of accuracy and CPU time for simulation of CO2 flooding processes.
Authors
Z. Jalili
Department of Petroleum Engineering, Science and Research Branch, Tehran University, Tehran, Iran
A.A Hashemi
Department of Petroleum Engineering, University of Stavanger, ۴۰۳۶ Stavanger,Norway
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