T油田三叠系长8_1油藏注水井深部调剖技术研究

Study on Deep Profile Control Technology for Water Injection Wel of Triassic Chang 81 Reservoir in T Oilfield

针对T油田三叠系长8水淹井逐年增多,调剖治理效果有限的问题,分析各油藏区块储层特征、见水原因及水淹特征,结合历年调剖过程中存在的注水压力高、升压空间小,调剖时堵剂停不住,堵不牢的问题,分析评价不同调剖体系及堵剂效果,优选不同调剖体系及堵剂配方,并开展室内效果评价,同时通过优化施工参数,现场试验评价,最终形成了适合T油田注三叠系长8_1油藏注水井深部调剖技术体系。

Aiming at the problem that the Triassic Chang 8_1 flooding wells in T oil field increased year by year and the effect of profile control and treatment was limited,the reservoir characteristics,water source and flooding characteristics of each reservoir block were analyzed,and the existing Water injection pressure is high,the pressurization space is small,the blocking agent can not stop,blocking the problem is not strong,analysis and evaluation of different profile control system and plugging effect,preferably different profile control system and blocking agent formula,and carry out indoor effect evaluation,And at the same time,by optimizing the construction parameters and field test evaluation,the deep profile control technology system for the injection wells of the Chang 8 reservoir in the T oil field is formed.