Effects of Well Trajectory in Directional Hole on Casing Stress under Different In-situ Stress Conditions, Progress in safety science and technology, 2005.
定向井套管应力随地应力条件的变化规律研究，石油学报，2005。
Directional engineering hole drilling technology is a new technology in drilling engineering projects.
工程孔定向钻进技术是钻探工程的一项新技术。
The DH4-8 well, located at Donghetang Oilfield in Tarim Basin, Xinjiang, is a directional production well with the deepest open hole sidetrack point and the longest open hole section.
位于新疆塔里木东河塘油田的DH 4- 8井是目前国内裸眼侧钻点最深、裸眼井段最长的定向开发井。
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