大庆油田储层改造技术应用

Application of Reservoir Reform Technology for Daqing Oilfield

大庆油田油井受钻井、修井、注灰堵水等原因影响,钻井液、修井液、水泥灰浆漏失油层,造成油层严重污染,致使油井产能大幅度降低,严重影响区块的开发效果。针对大庆油田油井存在的主要问题,在常规砂岩酸化的基础上,研究出油井酸化技术、多氢酸酸化技术、降压注汽技术,并在大庆油田各区块得到大面积推广及应用,取得良好措施效果。

Influenced by the factors of drilling,well repair, cement injecting and water plugging, the drilling fluid, workover fluid and cement mortarof Daqing oilfield leaked from the oil layer and caused serious pollution, which led to the large degree of decrease of oil-well productivity and influenced seriously the development effect of the region. Directing at the problems existing in Gaosheng oilfield oil wells and on the basis of normal sandstoneacidizing,study out the oil well acidizing technology,multi-hydrogen acid acidification technology and depressurization and steam injection technology,besides, promote largely and apply these technologies to each region of Gaosheng oilfield in order to get good measure effect.