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钻井井筒壁后充填水泥砂浆试验研究

Xinpeng FU,Guoye JING,Bo HAN,Ming PENG

Mine Construction Technology（2019）

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Abstract
钻井井筒壁后充填是钻井法凿井施工的关键工序.壁后充填以往采用2种材料,即水泥浆充填或水泥浆与碎石子间隔分段充填.使用水泥浆充填,水泥消耗量大,成本高.介绍了钻井井筒壁后充填水泥砂浆的试验方案和过程,分析了存在的问题,提出了改进建议.试验结果表明,采用水泥砂浆充填,既能够增加充填层的强度和密实度,也能够降低钻井井壁发生破坏的风险.
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