摘要
由于裂缝与裂缝之间、裂缝与井筒之间和水平井筒渗流的综合影响,导致致密气藏压裂水平井的渗流场十分复杂,二项式产能公式难以确定。鉴于此,采用一种新的思路,建立多级压裂水平井的数值模型,通过拟合生产历史曲线得到井筒和储层的相关参数,进而获得该井的初始及目前的二项式产能方程。苏里格气田苏53区块的实际应用表明,该方法对于致密气藏压裂水平井产能评价具有很强的适用性和可操作性,使产能评价真正地实现"动态化"。
Because of the combined influence among fractures, between fractures and wellbore, and horizontal wellbore flow, the seepage field of multistage-fractured horizontal well become very complex in tight gas reservoir, and the binomial productivity equation cannot be determined easily. Therefore, a new method was adopted to solve this problem. Through establishing the numerical model of multistage-fractured horizontal well and obtaining the pa- rameters of wellbore and reservoir derived from production curves, the initial and current binomial productivity equation can be obtained further. The real application in the Su53 block of Sulige gas field indicated that this meth- od has strong applicability and operability for evaluating productivity of multi-staged fractured horizontal well in tight gas reservoir, and it also can truly realize the dynamic productivity evaluation.
出处
《科学技术与工程》
北大核心
2014年第21期76-80,88,共6页
Science Technology and Engineering
基金
国家科技重大专项(2011ZX05015)资助
关键词
压裂水平井
产能评价
动态
数值模型
二项式
fractured horizontal well productivity evaluation dynamic numerical model binomial
