库车山前裂缝性砂岩气层裂缝对地层渗透率的贡献率  

The Contribution of Fractures of Kuqa Foreland Fractured Sandstone Gas Reservoirs to Formation Permeability

作　　者：张福祥[1] 王新海[2,3] 李元斌[1] 牛新年[1] 秦世勇[1] 

机构地区：[1]塔里木油田分公司,新疆库尔勒841000 [2]油气资源与勘探技术教育部重点实验室(长江大学),湖北荆州434023 [3]中国石油大学石油工程教育部重点实验室,北京102249

出　　处：《石油天然气学报》2011年第6期149-152,11,共4页Journal of Oil and Gas Technology

基　　金：国家油气重大专项(2011ZX05013)

摘　　要：研究了库车山前裂缝对地层渗透率的贡献率与裂缝对产量的贡献率,并给出了裂缝对地层渗透率贡献率的计算方法。根据基质渗透率与基质孔隙度关系,由测试层孔隙度得到基质渗透率,由试井得到地层的渗透率,由此研究裂缝对地层渗透率的贡献率。并得到如下认识:裂缝对产量的贡献率近似等于裂缝对地层渗透率的贡献率;库车山前裂缝性砂岩气层裂缝对地层渗透率的贡献都很大,大北气田裂缝对地层渗透率贡献率平均值为99.08%,迪那气田裂缝对地层渗透率贡献率的平均值为77.88%,大北气田裂缝对渗透率的贡献大于迪那气田裂缝对渗透率的贡献。The contribution of Kuqa foreland fractures to formation permeability and production rate was researched,and the calculation method of its contribution to formation permeability rate was also provided.According to relationship between matrix permeability and its porosity,matrix permeability was derived from the tested porosity,formation permeability was obtained by the well test,by which the contribution of fractures to formation permeability rate was researched.The result indicates that the contribution of fractures to production rate is approximately equal to the fracture to formation permeability rate.The contribution rate of Kuqa foreland fractures is the highest.The average contribution rate of Dabei Gas Field is 99.08%,and Dina Gas Field is 77.88%.The contribution rate of Dabei Gas Field is higher than that of Dina Gas Field.

关 键 词：基质渗透率 裂缝性砂岩 贡献率 大北气田 迪那气田 

分 类 号：P618.13[天文地球—矿床学]