可动凝胶深部调剖调驱技术研究与应用

Study on Technique of Mobile Gel Deep Profile Control and Displacement

目前全国大部分油田注水开发已进入中、高含水期,呈现出油井含水上升快,水驱动用程度低,产量递减幅度大等特点。针对在开发中存在的含水率高的矛盾,进行了可动凝胶深部调剖调驱配套技术的理论和配方研究,研制出了试验配方,并进行现场应用10井次,成功率100%,共注入调剖剂量2.1×104m3,增油5371t,降水4830m3,取得了良好的应用效果,有效地减缓了区块含水上升的速度和产量递减的速度。生产实践证明,调剖调驱技术是提高注水采收率的重要技术之一。

At present ,water flooding development in the most of the oilfields in China has been at the middle or high water-cut stage,water-cuting increased rapidly,recovery of water-flooding reserves was low and the production rate decreased greatly and so on.In allusion to the contradiction of high water content existed in the development,the techniques of mobile gel deep profile control and oil displacement and its matched theory were studied and applied in the oilfields.The experimental formulae were developed and applied in 10 wells.The success rate was 100%.A total injection profile control agent is 2.1 2.1× 104m3 of profile control agent was injected,oil increment was 5371t,water reduction was 4830m3,better results were achieved and water cut increase and production decline were effectively reduced.Production practice demonstrates that profile control and displacement technology is one of the essential recovery technologies for enhancing oil recovery.