双重介质油藏基质采出程度及规律

摘要

The matrix picking degree and influencing factors in fractured reservoirs were studied by numerical simulation method. Since the software of ECLIPSE can not give the matrix production, a new method for calculating the matrix cumulative oil production, ROE and matrix contribution rate using tracer element was proposed. The effect of size index, fracture permeability, fracture porsitiy etc. to the matrix contribution rate was analyed. The results show the degree of fracture development is the main factor affecting the matrix producing degree, and fracture permeability, fracture porsitiy has some effect on the matrix contribution rate to some extent. Gravity effect is very small.%采用数值模拟方法对双重介质油藏基质采出程度及影响因素进行研究。首次采用示踪剂跟踪的方法计算基质累计产油量及采出程度，分析块系数、裂缝渗透率、裂缝孔隙度等因素对基质采出程度、基质贡献率的影响。结果表明，裂缝发育程度是影响基质贡献率的主要因素；裂缝渗透率、孔隙度对基质贡献率也有一定的影响，重力因子的影响较小。