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si chuan di qu ding xiang zuan jing ji shu de ying yong yu fa zhan
Shi Zhonghua;Fu Xiaoquan;Du Chengming In this paper;the development history and actual level of directional drilling technique in Sichuan are generalized;the problems solved by using directional drilling technique in recent years are summarized and the positive oroposals for comprehensively applying and developing this technique and technology are put forward.
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