聚硅纳米增注技术在江陵凹陷高盐敏感性油藏中的运用  

The Application of Poly-silicon Mano-augmented Injection Technology in High-salt Sensitivity Reservoirs in Jiangling Depression

作　　者：胡雪滨[1] 李释然[2] 吴华[1] 

机构地区：[1]中石化江汉油田分公司勘探开发研究院,湖北武汉430223 [2]西安石油大学油气资源学院,陕西西安710065

出　　处：《石油天然气学报》2012年第7期129-131,9,共3页Journal of Oil and Gas Technology

摘　　要：江陵凹陷新沟嘴组油藏具有高盐敏感性的特征,其中部分低渗透和特低渗透储层存在注水压力高,地层压力保持水平低,影响水驱开发效果等诸多问题。聚硅纳米增注技术可以一改以往降压增注技术的作用机理,通过聚硅纳米微粒钉扎在岩石颗粒表面,驱走吸附水而增大孔隙喉道等作用,而使水相渗透率增大。针对江陵凹陷高盐敏感性油藏的特征,提出了采取聚硅纳米材料进行增注的措施原则,并以陵76斜7-1井为例,进行了聚硅纳米增注的施工设计,现场试验证明聚硅纳米降压增注技术对江陵凹陷高盐敏感性油藏的深入开发、有效注水、改善水驱开发效率具有重要的指导作用。Reservoirs had the characteristics high salt sensitivity in Xingouzui Formation of Jiangling Depression,in some of the low permeability and extra-low permeability reservoirs there existed the problems of high injection pressure,low formation pressure which impacted the effect of waterflooding.Poly-silicon nano-augmented injection technology could be used to change the mechanism of technology used in the past.By poly silicon nanometer corpuscle pinning on the surface of the rock pellets to drive away the adsorbed water to enhance the role of the pore throat for improving water permeability.In view of the high salt sensitivity of reservoir characteristics in Jiangling Depression,it was proposed that poly-silicon nano-materials were used for augmented injection,by taking Well L76 X 7-1 for example,a construction design of poly-silicon nano-augmented injection was carried out.Field test proves that the poly-silicon nano-augmented depressurizing-augmented injection technology provides an important guidance for in-depth development,effective water injection and improving water-flooding efficiency in the high salt-sensitivity reservoir of Jiangling Depression.

关 键 词：新沟嘴组 降压增注 聚硅纳米材料 吸水指数 注水压力 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]