摘要
破碎地层中钻探,采用有效的护孔技术是避免孔内事故发生的重要手段,同时也是保证完成钻探各项技术经济指标的先决条件。本文阐述了在具代表性的磷矿破碎地层中钻进所遇到的护孔难题及其所采用的护孔新技术、新方法。
An effective hole-protecting technique is the impor ta nt means for avoiding hole accident of drill exploration in broken rock beds,And it is alse the prerequisite to fulfill various te chnological and economic crit erions of drill exploration.The hole-protecting problem and the new technique t o protect the hole in drilling the representative broken bed of phosphorous depo sit are interpreted in this paper.
出处
《云南地质》
2003年第2期206-210,共5页
Yunnan Geology
