超短半径水平井轨迹控制技术

The Track Control of Horizontal Section in URHW

随着油田开发进入中后期，许多油水井井况恶化，甚至报废。修复报废井，开采薄油层，已成为中原油田稳产的重要措施。在老井中洗套恻钻采用超短半径水平井打开目的层可降低钻井成本、最大限度地增加泄油面积，乃为国内、外所公认。但实现水平段的轨迹控制是一项关键技术，尚待解决。参考国外相关技术不失为启发思路的一有效手段。本文重点介绍了超短半径水平井的最新研究成果、井眼轨迹控制方法以及井眼轨迹自动控制技术的发展趋势，对推动国内钻井技术的发展有一定参考借鉴作用。

As the development of the field has entered the medium and later period, many of producers and injectors are corroded, damaged and abandoned. To improve abandoned well and develop thin reservoir has been one of important measures to stable the production of Zhong Yuan Oil Field. As is acknowledged by the world, casing milling, side tracking and using ultrashort radius horizontal well (URHW)to open target formation in old wells can decrease drilling cost and increase oil permeating area. But the track control of horizontal section has been a key technology, which is urgently to be overcome, by synthesizing the related foreign data, this paper discusses the new developing achievement on ultrashort radius horizontal well,the control way of horizontal sec tion track and the developing trend of the automatic control technology,which plays a reference role on improving the domestic drilling technology.