Study of Microscopic Oil-Water Displacement Mechanism of Low-Permeability Reservoir —An example of Chang 82 Reservoir in Wellblock Zhuang-19 of Xifeng oilfiled

Abstract

Abstract: Chang-82 reservoir of Well block Zhuang-19 in Xifeng oilfield is of very low permeability and poor petrophysical properties, belonging to a low-permeability reservoir.The water-oil displacement mechanism and efficiency-affected factors in the studied area are analyzed systematically using real sandstone micro-model for water-oil displacement experiment (including single model and combination model), offering the realistic and visual percolation characteristics of fluids and remaining oil distribution in the process of water-oil displacement.This study can be as a guide for water flood scheme design of such a well block and other similar reservoirs.

Key words: micro pore structure, low permeability, micro fissure, oil-water displacement mechanism, oil-displacement efficiency, remaining oil

CLC Number:

TE341

FU Xiao-yan, SUN Wei. Study of Microscopic Oil-Water Displacement Mechanism of Low-Permeability Reservoir —An example of Chang 8₂ Reservoir in Wellblock Zhuang-19 of Xifeng oilfiled[J]. Xinjiang Petroleum Geology, 2005, 26(6): 681-683.

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Study of Microscopic Oil-Water Displacement Mechanism of Low-Permeability Reservoir —An example of Chang 8₂ Reservoir in Wellblock Zhuang-19 of Xifeng oilfiled

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