环保型高性能水基钻井液在山前超深井中的应用

发布时间：2018-04-16 19:33

本文选题：环境保护 + 高性能水基钻井液　；参考：《钻井液与完井液》2017年05期

【摘要】：针对库车山前构造超深、超高压、高温、高含盐地层常规高密度水基钻井液性能调控维护困难,钻进时阻卡等事故频发,安全钻达目的层极其困难等问题,试验应用了环境保护型高性能水基钻井液。该钻井液是由多元高性能井眼稳定剂、纳米成膜封堵剂、高效润滑剂、特殊提速剂等组成,具有抑制性强、流变性和润滑性良好、环境友好、保护储层等性能。该环境保护型高性能水基钻井液在库车山前x井进行了试验应用,应用表明高性能水基钻井液性能稳定,抑制性强,润滑性能好,相比于应用油基钻井液的邻井,机械钻速快6.6%,无事故,井下复杂相对很少。该环境保护型高性能水基钻井液体系环保指标检测合格,产生的岩屑呈土本色,生物毒性小,是环境敏感地区复杂地层提高钻井清洁生产水平的途径之一。
[Abstract]:Aiming at the problems of ultra-deep, ultra-high pressure, high temperature and high salt bearing formation in Kuqa Piedmont structure, it is difficult to control and maintain the performance of conventional high-density water-based drilling fluid, frequent accidents such as drilling time blocking cards, and extremely difficult to safely drill to the target layer, etc.Environmental protection high-performance water-based drilling fluid was used in the experiment.The drilling fluid is composed of multicomponent high performance wellbore stabilizer, nanometer film forming plugging agent, high efficiency lubricant, special speedup agent and so on. It has strong inhibition, good rheology and lubricity, friendly environment and protecting reservoir.The environmental protection high performance water-based drilling fluid has been tested and applied in Kuqa Mountain Pier x well. The application shows that the high performance water-based drilling fluid has stable performance, strong inhibition and good lubricity, compared with the adjacent wells used in oil-base drilling fluid.Mechanical drilling speed of 6.6 fast, no accident, downhole complex relatively little.The environmental protection high performance water-based drilling fluid system is qualified for environmental protection testing, and the resulting cuttings are of soil color and low biotoxicity, which is one of the ways to improve the level of clean drilling production in complex formations in environmentally sensitive areas.
【作者单位】：塔里木油田公司油气工程研究院;塔里木油田公司库车油气开发部;能新科(中国)科技有限公司;
【基金】：国家重大专项“前陆冲断带超深井安全快速钻井技术(2016ZX05051002)”部分研究成果
【分类号】：TE254

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