王场高含盐油藏水驱储层参数变化规律及机理研究

摘要

In light of a large number of indoor physical simulation tests,the authors have made a research on parameter variation and mechanism of flooding reservoir in Wangchang high-salt bearing oil pool and found that the permeability of reservoir with permeability greater than 80x10-3um2 will increase after water flooding and average pore radius will become large,or vice versa.The direct reason of parameter variation of flooding reservoir in Wangchang Oilfield is the drop and migration of rock particles and the primary cause is dissolution of soluble saline materials.%通过大量室内物理模拟试验,研究了王场高含盐油藏水驱储层参数变化规律及机理。研究认为渗透率大于80×10-3μm2的储层水驱后渗透率增加,平均孔隙半径增大,反之则渗透率下降,孔隙半径减小;王场油田水驱储层参数变化的直接原因是岩石颗粒的脱落和运移,根本原因是可溶性盐类矿物的溶解。