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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 formations, what kind of drilling technology is adopted is directly related to whether it can achieve the design purpose and whether it can achieve the maximum benefit. Compared with general and double drilling, the multi-seam, multi-mudstone, fault-containing, easily collapsible, , Using double penetration better reflect its superiority. Select the appropriate chemical slurry, in addition to prevent collapses collapse, anti-collapse hole, but also in case of collapsing, collapse hole mud performance can be adjusted in a wide range to achieve the desired results.