摘要
对于计算大斜度井产能的两种方法(Cinco-Lee法和Besson法),分别在各向同性和各向异性的地层中,针对影响产能的各个因素(井斜角、厚度、各向异性)及其相互关系进行了研究。结合现场实例,进行比较分析发现,井斜角大于75°时,Cinco-Lee法误差较大,此时在井斜小于90°时,适合用Besson法;在各向异性地层中,产量随井斜角增大而增大;随着地层非均质性的增强,产量小幅度递减。
To two ways of calculating slanted well productivity (Cinco-Lee and Besson), every factor (deviation angle, thickness, anisotropism) influencing on productivity and their relationship is studied in the isotropic and anisotropic formation. Examples associating with comparative analysis in oilfield show that it is fit for Besson's if deviation angle is more than 75°but Cinco-Lee method has more errors when it less than 90°, and production increases with slanted well increasing in anisotropic formation, and production reduces within a narrow range with heterogeneity of formation enhancing.
出处
《油气井测试》
2008年第4期21-23,共3页
Well Testing
关键词
大斜度井
产能
表皮系数
计算方法
slanted well, productivity, skin factor, calculation method
