振动—酸化复合解堵增注技术在莫北油田的应用

APPLICATION OF OSCILLATION-ACIDIFICATION COMPOUND BROKEN DOWN TECHNOLOGY IN MOBEI OILFIELD

为了解决莫北油田低渗、强敏感性储层注水井欠注问题,通过对莫北油田注水井欠注原因的分析,提出了振动—酸化复合解堵增注技术。探讨了振动—酸化复合解堵增注技术的解堵增注机理,介绍了振动—酸化复合解堵增注技术的现场施工工艺。通过室内岩心酸蚀实验,优选酸液体系,在莫北油田的注水井应用了振动—酸化复合解堵增注工艺技术。应用结果表明,振动—酸化复合解堵技术工艺效果比单纯的酸化工艺效果要好,可起到明显的解堵增注效果,并能延长增注有效期。

Through analyzing the reasons of the underinjecteion wells in Mobei oilfield, oscillation-acidification compound broken down technology is proposed. At the same time, the mechanism of broken down and augmented injection is discussed, and its application is also introduced in Mobei oilfield. The researches indicate: the effect of oscillation-acidification compound broken down technology is better than pute acidification technology, it improves the effect of broken down and augmented injection obviously, and also prolongs the effective period of augmented injection.