二连油田弱凝胶调驱技术  

Application of weak gel profile control and displacement technique in Erlian Oilfield.

作　　者：吴秀田[1] 汪宝新[2] 陈龙伟[2] 杨华振[2] 邵忠秋 宋科[2] 

机构地区：[1]中国科学院地质与地球物理研究所,北京100083 [2]华北油田二连分公司地质研究所,内蒙古锡林浩特026017

出　　处：《石油钻采工艺》2006年第B10期49-52,共4页Oil Drilling & Production Technology

摘　　要：二连油田成藏规模小,构造复杂,油藏类型多,受沉积环境和构造破碎影响,储层非均质性严重。目前油田已进入高、特高含水开发阶段,平均采收率仅17.3%,近井处理已不能解决油层深部的极度非均质问题。2001年开始引进弱凝胶调驱技术,在室内物模试验的基础上筛选了适合蒙古林砂岩油藏和吉45断块弱凝胶配方体系,并选择蒙古林砂岩砂西断块中部4个井组和吉45断块TⅠ中下油组5个井组进行了先导试验,取得很好的降水增油效果,到2005年底,2个区块累计增油9.1144×104t,并形成了一套整合的现场注入工艺和试验评价技术。Erlian Oilfield is a small sandstone oil reservoir with complex structural reservoir and serious conflict between formations because of sediment environment and structure fragmentation. Now it has entered high or ultra-high water cut stage, average recovery ratio is only 17.3%,measures near well couldn't solve oilfield heterogeneity problem.Weak gel profile control and displacement technique was used since 2001.Based on experimental physical modeling, it was found that weak gel system was more suitable for Mongolia sandstone reservoir and Ji45 block,and the pilot test has been conducted in 4 well group in middle of west sand block and 5 well group in Ji45 block,and has acquired apparent effect of oil production increase and water production decline with accumulative total oil production increase 9.1144×10~4 t.

关 键 词：弱凝胶 深调弱驱 改善 非均质性 二连油田 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]