Aiming at shrinking pathway of hole that was made for expanding of stratum in water,using for reference of positive electricity glue MMH mud system,on the base of indoor examination,favorable effect was acquired in field examination.

• 针对富含钙蒙脱石的水敏性地层会遇水膨胀 ,导致钻孔缩径等问题 ,借鉴石油钻井中采用的正电胶MMH泥浆体系 ,在进行室内试验优选配方的基础上 ,进行了野外试验 ,取得了良好的效果。