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塔里木盆地沙漠腹地的塔中四油田有3个高声、，其中402高点的CⅡ油组是一个块状底水油藏，均质段油层厚度大、物性好、夹层不发育、底水活跃、储量大，用水平井开发能防止底水锥进。从1994年4月至1996年2月，在近2年时间内完成了5口水平井，平均适斜，点井深3323．32m，平均村深4230．62m，平均垂深3593．50m，平均水平段长492．01m，平均水平位移785．62m，平均钻井周期195．46d，初卢原油都在1000t／d以上，稳产原油都在600t／d以上，生产50d就可收回全部钻井投资。文中介绍了优化并身结构和优化井眼剖面设计，着重加绍了直井段防科打直技术，造科段以动力钻具为主和以转盘钻为主的开眼轨迹控制技术，水平段以转盘钻配DTU导向钻具和PDC钻头为主的开眼轨迹控制技术，利用计算机预测井眼轨迹控制技术，钻井液和完井技术以及通过施工得到的几声、认识。
The Tazhong four oilfields in the desert hinterland of Tarim Basin have three loud sounds, of which the CⅡ oil group at 402h is a massive bottom water reservoir, and the thickness of the oil layer in the homogeneous section is large with good physical properties, the interlayer is not developed and the bottom water is active Large reserves, with horizontal well development to prevent bottom water coning. From April 1994 to February 1996, five horizontal wells were completed in the recent two years with an average of 3323.32m in depth and an average depth of 4230.62m with an average depth of 3593.50m. The average horizontal section Long 492.01m, the average horizontal displacement of 785.62m, the average drilling cycle of 195.46d, the first rupees are more than 1000t / d, stable oil are more than 600t / d, the production of 50d can recover all the drilling investment. This paper introduces the optimization of body structure and the optimization of wellbore profile design, emphasizes the introduction of straight section of anti-section straightening technology, section of the main sections of power drill and rotary drill-based open-hole trajectory control technology, the horizontal section to Turntable drilling with DTU pilot drill and PDC drill-based open-hole trajectory control technology, the use of computer technology to predict well trajectory control, drilling fluid and completion technology, as well as through the construction of several sound, understanding.