导向钻井井下控制理论与技术的发展

Development of Down Hole Track Control Theories and Techniques during Orienting Drilling

介绍了近几年旋转导向钻井技术的发展概况和国内外的研究成果,阐述了井下控制的一些概念和原理,以及导向钻井井下控制理论和技术的发展,并指出导向钻井轨迹控制预测方法也应随钻井方式的不同而不同,提出了实现导向钻井井下控制的关键技术和方法是增加井下钻具组合的可调特性和改变井下工具的工作状态,在井眼轨迹控制系统中增设反馈环节,这是井眼轨迹控制技术研究的重点。

This paper presents the development of rotary orienting drilling and achievements worldwide throughout the years, states some concepts and principles regarding down hole track, suggests that the predicting method for trajectory control be improved with drilling manners, proposes that the critical techniques of steerable drilling are to increase the adjustability of BHA and to change tool performances down hole. In addition, to establish a feedback sector in bottom hole track controlling system is the key work for such issue.