论文部分内容阅读
河南油田聚合物驱应用取得了良好的开发效果,聚合物驱产量已占稀油油田产量的近三分之一,目前大部分聚驱单元已结束注聚进入后续水驱,产量下降快,稳产难度大,但聚驱后地下仍有近50%的地质储量未采出。为寻求聚合物驱后剩余油的有效挖潜方法,利用油藏数值模拟结果、油水井测试资料和取心井资料,明确了剩余油潜力分布,提出了聚合物驱后井网完善、注采调整和组合驱等挖潜对策。应用于现场实际中,取得了较好的效果,使聚合物驱后剩余油成为可动用的潜力,探索出一条聚合物驱后进一步提高采收率的新途经。
The application of polymer flooding in Henan Oilfield has achieved good development results. Polymer flooding has accounted for nearly one-third of the production of thin oil fields. At present, most of the polymer flooding units have been injected into the subsequent water flooding and the output has dropped rapidly and stable. Difficult, but after the drive-flooding underground nearly 50% of the geological reserves have not been extracted. In order to find out the effective tapping method of remaining oil after polymer flooding, the potential distribution of remaining oil was clarified by using reservoir numerical simulation results, oil well test data and coring well data. And combined drive and other potential solutions. Applied to the actual field, and achieved good results, so that after the polymer flooding residual oil into a mobile potential, to explore a polymer flooding and further improve oil recovery after a new way.