摘要
根据低渗透油藏的非达西渗流规律,利用流管法推导的压裂矩形井网产能公式,分析研究了影响产能和动用系数的因素,主要是压裂半缝长、井排距、启动压力梯度及注采压差等,对各因素的影响程度进行了讨论,结合油田实际,提出了提高低渗透油田开发效果的途径。研究结果可用于低渗透油藏现场开发方案的井网优化及储层动用程度的评价。
Based on non-Darcy percolation law in low permeability reservoir,rectangular pattern productivity formula for hydraulic fracturing well was obtained by using the stream-tube method. This paper analyzed the influential factors of productivity and the use coefficient. The influence factors include the half of fracture length,well spacing,starting pressure gradient and injection-production pressure difference. At the same time,the influence degree of each factor was discussed and the approaches of enhancing the low permeability reservoir development effect were put forward in accordance with actual situation. The results can be used for pattern optimization of low permeability reservoir and reservoir evaluation.
出处
《钻采工艺》
CAS
北大核心
2009年第1期46-48,114,共3页
Drilling & Production Technology
关键词
低渗透
矩形井网
压裂
产能公式
井网优化
low permeability,rectangular pattern,fracturing,productivity formulas,optimum pattern
