黏土在松散地层护壁堵漏的工程实践

The engineering practice of clay in loose formation armguards plugging

阐述了泥浆、原状黏土块和经过加工的黏土团块在松散地层钻进时护壁的适用条件和效果,并结合工程实例,介绍了在极为松散的回填砂石层冲击钻进中,用水浸透的黏土经机械碾压成块状后,成功堵漏的技术,为类似工程施工积累了经验。

This paper described the application conditions and effects of mud,original clay and process clay in loose formation drilling arm-guards,and combining with the engineering example introduced the successfully plugging technology using water-soaked clay by mechanical com-paction into massive in loose sand and gravel backfilling impact drill,accumulated experience for similar projects construction.