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针对深探井上部地层造浆严重、坂土含量控制难度大,且地层渗漏严重;盐层段厚、埋藏深;井底温度高,地层压力系数高(最高1.80);固相含量高,钻井液流变性能控制难度大等技术难题,展开了技术攻关,确定了高密度抗高温饱和盐水钻井液体系配方以及维护措施,成功应用于现场,使用效果良好,为深探井的安全顺利施工提供了有利的技术保障,并达到了钻井提速、缩短建井周期、取得最佳效益的目的。
In view of the serious formation of mud in the upper part of the deep exploration well, the control of the contents of karasu is difficult and the formation seepage is serious; the salt section is thick and buried; the bottomhole temperature is high and the formation pressure coefficient is high (up to 1.80); the solid content is high, Drilling fluid rheology control difficult and other technical problems, launched a technical tackle, identified high-density high temperature saturated brine drilling fluid formulation and maintenance measures, successfully applied in the field, the use of good results for the safety of Deep Well to provide a smooth construction A favorable technical support, and achieved drilling speed, shorten the period of well construction, and achieve the best efficiency.