苏北草舍油田泰州组油藏注采结构调整与效果分析

Flood Pattern Modification and Its Result Analysis in Taizhou Formation Reservoir of Caoshe Oilfield in North Jiangsu

韦建伟 钱卫明

WEI Jian-wei QIAN Wei-ming

中石化 华东分公司 试采大队, 江苏 泰州 225300

Oil Testing and Well Testing Brigade of East China Branch, SINOPEC, Taizhou 225300, China

草舍油田泰州组油藏是典型的复杂断块小油藏。自1990年投入注水开发以来,采用"河道注水,边滩采油"的开采方式,原油年产量稳中有升,已连续6年产油量稳产在2×104t以上,采油速度达2%,提高了水驱控制程度和可采储量。研究表明,搞好复杂断块小断块油藏的开发,关键在于选择合理的注水井网,并辅以转注、深抽、补孔和调层等配套措施,才能获得较好的开发效果。

Taizhou Formation Reservoir of Caoshe Oilfield is a small complex fault block reservoir. It started waterflood development in 1990,and adopted the recovery method of "waterflooding in river channel,oil producing in point bar". Since then,the yearly production stably went up,and was more than 2×104t in 6 successive years. Its oil production rate reaches 2%,and its waterflooding control level and its recoverable reserves are improved. The research shows that the key to develop the small complex fault block reservoir is to choose the reasonable flood pattern and to take the matching measures,such as oil producing wells transferred to water injection well,oil pumping in depth,perforations adding, formation adjusting,and so on. In that case,better developing results could be obtained.