摘要
应用水动力学方法分析分井组周期性调整注水强度的水驱开发机理，分析和矿场试验结果均表明，在注水油田开发进入中高含水期，采用分井组周期性调整注水强度的方法可以改善水驱开发效果。在提高水驱原油采收率方面比单纯的周期注水法效果好，与常规法注水相比可提高原油采收率３％～１０％。该法具有简单易行、投资小、见效快、经济效益好等优点，对注水油田开发有一定的借鉴作用。
The mechanisms of water drive development by cyclic adjusting the intensity of water injection in well groups are analyzed. The analytical and field test results show that the development efficiency of water drive can be improved by adjusting the intensity of water injection by well groups when the oil field development is in medium/high water cut stages. This method is superior to simple cyclic water injection, and the oil recovery factor can be increased by 3%～5% compared with conventional waterflooding. This method is simple, less expensive,effective and economically efficient, therefore it will be of reference value to a certain extentto the development of oil field by water injection.
关键词
水动力学
周期注水
水驱开发
油田
hydrodynamics
method
cyclic waterflooding
adjustment of intensity of water injection
water drive
dead area
recovery factor
