洲城油田开发后期提液增油技术探讨  

Approach to enhancing liquid for oil increment in the late life of the Zhoucheng oilfield development

作　　者：李建国 

机构地区：[1]中石化华东石油局,江苏泰州225300

出　　处：《特种油气藏》2010年第6期120-122,共3页Special Oil & Gas Reservoirs

基　　金：中石化华东石油局科技攻关项目"洲城油田注采结构调整研究"部分内容(HDF/KJ-2007-12)

摘　　要：提液增油是水驱油藏开发中后期保持稳产和提高采收率的有效开发模式。针对洲城油田开发后期存在的诸多问题,对提液增油机理、提液时机进行了探讨,同时结合洲城油田矿场试验对提液参数及注水参数进行了研究,对提液后出现的增油和增水2种相反现象进行了分析,并对下步工作提出了建议。研究认为,注水开发油藏在进入中高含水期后,只要油藏不发生严重水淹或窜槽,适时放大生产压差,可提高油层单井产量;提液要与堵水相结合,当油层发生严重水淹、大孔道窜槽时要先堵水,否则提液无效。Enhancing liquid for oil increment is effective to sustain stable production and improve recovery factor in the mid-late life of reservoirs developed by water flooding in the Zhoucheng oilfield.This paper addresses the mechanism of enhancing liquid for oil increment and the timing of liquid enhancement,studies the parameters of liquid enhancement and water injection combining with field experiment in the Zhoucheng oilfield,analyzes the two opposite phenomena of both oil and water increment appeared after liquid enhancement,and offers some suggestions for future development of the this oilfield.The study indicates that in mid-high water cut stage of water flood reservoirs,the individual well producing rate can be improved by timely increasing drawdown pressure as long as there isn't serious watered out or channeling.The liquid enhancement shall be combined with water shut off.When serious watered out or high capacity channeling happens in a reservoir,the water shall be shut off at first,otherwise liquid enhancement can be invalid.

关 键 词：开发后期 提液增油 提液机理 提液时机 增产建议 洲城油田 

分 类 号：TE357[石油与天然气工程—油气田开发工程]