Experimental Study of the Effect of Barriers on Heavy Oil Recovery during Hydrocarbon Solvent Injections
Publish place: 06th International Congress on Chemical Engineering
Publish Year: 1388
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ICHEC06_530
تاریخ نمایه سازی: 1 مهر 1388
Abstract:
Although most of the heavy oil reservoirs contain discontinuous shaly structures, the effect of shale geometrical characteristics including: spacing from wells, discontinuity, orientation, shale's spacing and length on oil recovery factor in presence of gravity force are not well understood. In this work a series of solvent injection experiments were conducted on various vertical one-quarter five-spot glass micromodels containing barriers that are initially saturated with heavy oil under several fixed flow rate conditions. The oil recovery was measured by analysis of the pictures provided continuously during injection processes. The experimental data were used for developing and validating compositional-numerical model. The results indicated that the ultimate oil recovery in presence of shale was lower than that in homogeneous models. The oil recovery was greatly a function of shaly structure’s orientation and by increasing the barrier exposure with the main flow direction the solvent propagation decreased. The gravity force caused the solvent to be propagated better in the media. Lower distance of these barriers from production well reduced the final oilrecovery, but it acted conversely for the case of the injection well.
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Authors
A . A Dehghan
Sharif University of Technology, Department of Chemical and Petroleum Engineering Tehran, Iran Tehran Petroleum Research Center,
S . A Farzaneh
Islamic Azad University, Shiraz Branch, Iran
R Kharrat
Tehran Petroleum Research Center, Petroleum University of Technology, Tehran, Iran
M . H Ghazanfari
Sharif University of Technology, Department of Chemical and Petroleum Engineering Tehran, Iran Tehran Petroleum Research Center,
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