浅谈小井眼三维绕障定向井井眼轨迹控制技术与实践

Discussion on trajectory control technology and practice of slim hole three dimensional obstacle avoidance directional well

小井眼钻井是油气钻井工程中的难点之一,尤其是在小井眼三维绕障定向井钻井过程中,井眼轨迹控制非常困难。现有小井眼三维绕障定向井井眼轨迹控制技术在实践中存在着操作难度大、控制精度要求高、井下作业危险性高等缺陷。本文主要结合实践经验分析了小井眼三维绕障定向井钻井中遇到的难点,探讨了小井眼三维绕障定向井井眼轨迹控制技术的要点。

Slim hole drilling is one of the difficulties in oil and gas drilling engineering.Especially in the process of drilling three dimensional barrier and directional wells,it is very difficult to control well trajectory.The existing three dimensional obstacle avoidance directional well trajectory control technology in slim hole has many shortcomings,such as difficult operation,high control accuracy and high risk of downhole operation.Combining with practical experience,this paper analyzes the difficulties encountered in drilling three dimensional barrier and directional wells in slim hole,and discusses the key points of well trajectory control technology for three dimensional barrier drilling in directional wells.