摘要
单缝洞系统是缝洞型碳酸盐岩油藏最简单的缝洞组合模型,由空腔未充填溶洞和高导裂缝构成,其中溶洞是主要的储集空间,裂缝是主要的流动通道。试验研究表明:溶洞的压力、产量呈明显指数关系变化。基于物质平衡理论和水动力学理论建立了压力、产量的指数递减模型,由此可计算裂缝的平均导流能力;采用该递减模型计算溶洞体积,相对误差约为3.27%,模型具有有效性和合理性。
Single cavity/fracture system is the simplest model for cavity-fractured reservoir. The cavity is the primary storage space and the fracture is the flow channel. Lab tests indicate that pressure and production rate is exponential in elastic production experiment for closed single cavity-fractured system. The decline models of pressure and production for cave are developed based on material balance and hydraulic theory. The average flow conductivity of fracture can be calculated. The volume of cavity can be calculated and the relative error about 3.27%, which indicate the this model is reasonable.
出处
《石油钻探技术》
CAS
北大核心
2009年第3期88-90,共3页
Petroleum Drilling Techniques
基金
国家重点基础研究发展计划("973"计划)项目"碳酸盐岩缝洞型油藏开发基础研究"(编号:2006CB202404)资助
关键词
碳酸盐岩油气藏
单缝洞系统
导流能力
溶洞体积
carbonate reservoir
single-fracture-cave system
flow conductivity
vugular volume
