裂缝性油藏抽汲井试井曲线特征  

CHARACTERISTICS OF WELL-TEST CURVES FOR THE SWABBING WELLS OF FRACTURED RESERVOIRS

作　　者：刘洪[1] 任路[2] 胡治华 

机构地区：[1]长江大学(油气资源与勘探技术教育部重点实验室) [2]冀东油田 [3]中海油天津分公司

出　　处：《石油工业计算机应用》2011年第3期13-15,3,共3页Computer Applications Of Petroleum

基　　金：国家油气重大专项(2011zx013;2011zx05015)

摘　　要：抽汲作业在国内外油田上被广泛应用,是提高油藏开采速度的有力手段。裂缝性油藏由于裂缝的存在,裂缝特征参数对抽汲后恢复压力资料有显著影响。针对圆形封闭地层裂缝性油藏抽汲井段塞流数学模型,通过拉普拉斯变换和数值反演方法,求解得到了裂缝性油藏抽汲井井底压力。研究了窜流系数、储能比、井筒储集系数和表皮系数等参数对圆形封闭地层裂缝性油藏段塞流试井曲线的影响,为抽汲井压力恢复资料解释提供理论指导。Swabbing operation,which is a powerful means to improve recovery rate, is widely used in oilfields at home and abroad.The fracture feature parameters of fractured reservoirs have remarkable impact on recovered pressure data after swabbing.According to the mathematical model of the swabbing interval of fractured reservoirs in round confining formation, the bottom pressure of swabbing well can be solved through Laplace transform and numerical inversion method.The effect of interporosity flow coefficient, accumulated energy ratio, hole reserve coefficient and skin factor on the well-test curve of slug flow in ronnd confining formation is studied. It provides the theory for interpretation of the pressure recovery data.

关 键 词：裂缝性油藏 抽汲井 段塞流 窜流系数 储能比 

分 类 号：TE344[石油与天然气工程—油气田开发工程]