摘要
脉冲注水在高含水油藏中能建立不稳定驱替状态 ,从而扩大波及体积 ,提高油藏采收率。在港东一区一断块进行先导性试验 ,见到了良好的增油效果 ,日产油从实验前 1998年 12月的 179t升至 1999年底的 2 0 8t,累增油 2 90 7t。对此次试验进行了初步的分析、研究 。
Pilot test carried out at No. 1 block of 1 area in east of Dagang has achieved good results on incremental oil on the basis of the principle that pulse waterflooding can establish unstable state, expand swept volume and improve recovery factor in high?water?cut reservoir. Daily oil production increased from 179t in December of 1998 before experiment to 208t by the end of 1999 with cumulative incremental oil 2907t. Initial analysis and study on this experiment has accumulated certain experience for pulse waterflooding in reservoir of the same kind.
关键词
砂岩油藏
高含水油藏
脉冲注水
剩余油
井均质性
high water cut reservoir, pulse waterflooding, swept volume, remaining oil, heterogeneity
