整装油藏高耗水层段治理技术研究

Study on treatment technology of high water consumption zone in integrated reservoir

特高含水后期整装油藏纵向发育高耗水层段,导致注入水低效无效循环,严重制约了油藏效益开发,因此针对特高含水后期整装油藏,开展高耗水层带治理技术研究显得尤为重要。选取胜坨油田坨28沙二9-10单元作为典型单元开展整体细分注水开发技术研究。从研究结果看,整体分注可以有效抑制高耗水层的影响,改善开发效果;对于层内高耗水段,通过低成本的油泥砂注入堵调,可以进一步改善高耗水层带调控效果,是一项低成本高耗水层段治理技术。

In the late stage of ultra-high water cut,the integrated reservoir develops longitudinally with high water consumption zones,which leads to inefficient and ineffective circulation of injected water and seriously restricts the development of reservoir benefits.Therefore,it is particularly important to study the treatment technology of high water consumption zones for the integrated reservoir in the late stage of ultra-high water cut.Unit 9-10 of Tuo 28 Sha2 in Shengtuo Oilfield is selected as a typical unit to carry out the overall subdivision waterflood development technology research.According to the research results,the overall separate injection can effectively restrain the influence of high water consumption layer and improve the development effect;For the high water consumption zone in the zone,the control effect of high water consumption zone can be further improved by injecting oil mud sand with low cost and plugging adjustment,which is a low cost and high water consumption zone treatment technology.