带夹层边底水油藏采水抑锥方法研究

Research on inhibition of water coning of water recovery in edge-bottom water reservior with interlayer

运用数值模拟技术,对WC15-1油田边底水油藏水平井油水同采技术进行研究。研究结果表明:该油藏的采水井水平段长度为100 m,最佳采水层位以水层中下部为宜,最佳采水采油比为2:1,采水时机应选择含水率为30%时采水,采油水平井水平段应该在油层上部为宜。WC15-1油田的实施效果表明,油水同采技术对"稳油控水"效果较好,对以后类似油田的开发提供一定的借鉴作用。

By using numerical simulation technology, oil-water simultaneous production technology of edge-bottom water reservior in WC15-1 oilfield was studied. The study results show that the horizontal section length of water recovery well of this reservoir is 100 meters, the optimal water recovery layer is in the middle-lower part, the optimal water/oil recovery ratio is 2：1, the proper water revovery time is when the water cut reaches 30 % and the best horizontal section of oil recovery well is in the upper part. The imple- mentation effects of WC 15-1 oilfield indicate that oil-water simultaneous production works better on the oil production stabiliza- tion and water cut controlling, and has certain reference to the development of similar oilfields.