基于Buckley-Leverett理论的典型缝洞油藏一维驱替开发指标计算方法  

Calculation Method for One Dimensional Displacement Development Indexes of Typical Fracture-Vuggy Reservoir Models Based on Buckley-Leverett Theory

作　　者：吕爱民[1] 王立伟 龙涛 王传睿 董云振 赵健男 李绪延 

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266580 [2]中石化青岛安全工程研究院,山东青岛266000

出　　处：《西安石油大学学报（自然科学版）》2018年第1期61-67,74,共8页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家重大专项"碳酸盐岩缝洞型油藏开采机理及数值模拟研究"(2011CB202404)

摘　　要：为减少缝洞型油藏等效渗透率计算量并且建立一套简便的开发指标计算方法,对缝洞型油藏的渗透率张量公式进行了简化,忽略了基质的影响,得到了沿流动方向的等效渗透率公式,并通过数值模拟方法对所得公式进行了验证。结果表明理论公式与数值模拟结果吻合得较好。利用等效渗透率公式和广义达西定律,基于一维驱替的Buckley-Leverett水驱油理论对典型缝洞油藏进行关键开发指标的计算,计算过程中考虑了重力的影响,并且推导了定流量开发方式下的关键开发指标计算公式。利用COMSOL和ECLIPSE分别对实际模型和等效模型的水驱开采过程进行数值模拟,并对理论开发指标公式进行验证,结果表明,理论计算结果与数值模拟结果吻合。In order to reduce the complexity of computing the equivalent permeability of fracture-vuggy reservoirs and establish a set of simple method for calculating the development indexes of fractured-vuggy reservoirs,the permeability tensor formula of the fracturedvuggy reservoir model was simplified,ignoring the influence of matrix permeability,the calculation formula of the equivalent permeability in flow direction was derived,and it was verified by numerical simulation. The result shows that the calculation result of the simplified formula is in good agreement with the numerical simulation result. The development indexes of typical fracture-vuggy reservoir models are calculated based on the equivalent permeability formula,the general Darcy's Law and one dimensional Buckley-Leverett water flooding theory. The influence of gravity is taken into account in the calculation process,and the calculation formulas of key development indexes of fractured-vuggy reservoirs under constant liquid output were derived. The water flooding process of actual model and equivalent model was simulated by using COMSOL and ECLIPSE respectively,and the calculation formulas of the key development indexes were verified. The results show that the calculation results of the formulas are in good agreement with the numerical simulation results.

关 键 词：典型缝洞模型 等效渗透率 B-L理论 开发指标计算 

分 类 号：TE32[石油与天然气工程—油气田开发工程]