复杂地层的钻探工艺与泥浆使用

Discussion on Drilling Technique and Mud Application in Complex Strata

对于复杂地层,采取何种钻探工艺,直接关系到能否达到设计目的和能否发挥最大效益,绳钻与普双钻进行比较,在多煤层、多泥岩、含断层、易坍塌、易膨胀地层,采用普双钻进更能体现它的优越性。选择相适应的化学泥浆,除要防坍塌、防垮孔外,还要在遇坍塌、垮孔后能将泥浆性能在较大范围调节,以达到预期效果。

For complex strata,the application of drilling techniques is of direct significance to the design purpose and the most benefit achievement.Compared to cable drilling,general single-acting drilling has the advantages in complex strata with multiple coal-seam,muddy rock,fault,collapsibility and expansibility.The application of corresponding chemical mud should be anti-dumping and anti-collapsed.In case of dumping and collapsing,the mud performance should be adjusted in a large range to achieve the desired results.