桥口油田非均质复杂断块油田提高采收率技术研究  

Research & Application on Oil Recovery Technology in Heterogeneous Oil Reservoir of Complicated Fault Block

作　　者：崔太华[1] 刘海涛[2] 冯士杰[3] 辛松[4] 李少兵[5] 高万州[1] 

机构地区：[1]中国石化集团中原油田分公司采油六厂,山东东明274511 [2]中国石化集团中原油田分公司人力资源部,河南濮阳457001 [3]中国石化集团中原油田勘探局钻井四公司,河南濮阳457321 [4]中国石化集团河南油田采油一厂,河南南阳474780 [5]中国石化集团中原油田勘探局作业二处作业三队,山东东明274511

出　　处：《海洋石油》2005年第2期39-43,共5页Offshore Oil

摘　　要：桥口油田位于东濮凹陷的中部,属典型的非均质油藏,由于油藏平面及纵向上非均质严重,低渗层水驱动用难度大,油田因高速开发过早进入中高含水期,开发水平变差,水驱采收率偏低。针对油田非均质严重,水驱采收率偏低的开发现状,研究应用了适合油田特点提高采收率技术,平面上利用大位移定向井技术,部署调整井,降低油藏平面非均质性;纵向采取以堵水、储层压裂改造为主的产液结构调整及以分注、增注注水结构调整相结合,降低油藏纵向非均质性,实现层间转移。通过实施,使油藏平面、层间矛盾逐步缓解,油田采收率得到提高,为同类油藏提高采收率提供了可借鉴的经验。Qiaokou Oilfield locates at the center of Dongpu sag, and is attributed to the typical heterogeneous oil reservoir.Because of a serious areal and vertical heterogeneity and difficulties of water drive in low-permeability layers, Qiaokou Oilfield enters in the high water-containing period too early and water drive oill recovery factor is low. Aiming at the serious heterogeneity and low oil recovery factor,utilize large displacement directional well technology to dispose adjusting wells on the plane to solve serious areal heterogeneity; combine the adjustment of liquid production system(mainly through water plugging and reserve fracture reconstruction) with the adjustment of water injection stucture to reduce vertical heterogeneity and realize shifts among layers. The implementation shows that contradiction between oil reservoir planes and layers alleviate progressively and oil recovery factor rises. It also offers experience to improve the oil recovery factor in the similar oilfields.

关 键 词：提高采收率技术 桥口油田 复杂断块油田 水驱采收率 大位移定向井 平面非均质性 产液结构调整 注水结构调整 非均质油藏 中高含水期 油田采收率 东濮凹陷 开发水平 开发现状 压裂改造 层间矛盾 调整井 堵水 分注 增注 

分 类 号：TE372[石油与天然气工程—油气田开发工程] TE321