多氢酸深部酸化技术在卫城低渗油田的应用  

The Application of Deep Acidification Technology of Polyhydrogen Acid in Wencheng Low Permeability Oil Field

作　　者：周选军 范志毅[2] 黄军高 张文成[2] 赵长权[2] 

机构地区：[1]中原油田分公司采油气工程服务中心作业三大队,山东莘县252429 [2]中原油田分公司采油三厂,山东莘县252429

出　　处：《广东化工》2017年第12期79-80,44,共3页Guangdong Chemical Industry

摘　　要：卫城油藏埋藏深、储层渗透率1-28.5m D,平均孔隙度12.8%,属低渗油藏,层间非均质性强,局部注采井网不完善,区块注水压力高,高压欠注严重等问题,严重影响了油田开发水平的提高。在传统的酸液体系酸化过程中,存在处理半径有限、易生成二次沉淀、残酸返排不彻底等问题。为实现注水井酸化降压增注,增加有效注水,改善水驱开发效果,研究多氢酸深部酸化技术,为低渗油藏透注水开发提供了一条有效的工艺途径。The Wencheng reservoir buried depth, reservoir permeability 1-28.5 mD, reservoir porosity by an average of 12.8 %, belongs to low permeability and strong interlayer heterogeneity reservoir. Partial injection-production pattern is incomplete, high water injection pressure, high pressure under injection is serious, serious impact on the improvement of the oilfield development. In the process of acidification of the traditional acid solution~ the problem is that the treatment radius is finite, easy to make a secondary precipitation, the residual acid return is not complete. In order to realize the acid reduction of injection Wells, increase effective water, improve water flooding development effect, deep research of hydrogen acid acidification technique, an effective process is provided for seepage waterfiood in low permeability reservoirs.

关 键 词：吸水剖面 酸化解堵 渗透率 非均质性油藏 

分 类 号：TQ[化学工程]