对新生界复杂地层钻进技术的几点认识

Review on Technological Gists of Drilling in Complex Strata of Cenozoic Erathem

针对煤田地层钻进中钻遇复杂地层特别是新生界地层时涉及的几点技术问题进行了探讨。通过试验提出了复杂地层钻进中小孔径的优点、地层压力平衡的重要性以及冲积层钻进需注意的几个要点,重点对第三纪造浆地层的造浆原因和泥浆性能的优化处理进行了分析,总结了钻进过程中应对不同性质和成分的地层采用不同的处理方法。

Aimed at some technological questions caused in the drilling of complex strata in coal field, especially in cenozoic strata carried out discussion. Through testing submitted advantages of small diameter drilling in the complex strata, importance of stratigraphic pressure balancing, and some gists need pay attention in drilling of alluvium, and analyses centre on mud- made reason of Tertiary mud- made strata and optimization processing of mud capability, and summed different processing methods aimed at different strata in the drilling.