大位移井岩屑运移研究综述与展望

随着大位移井的广泛应用,岩屑运移问题已成为大位移井钻井安全、成本、效率的关键问题之一。井筒岩屑堆积会导致高摩阻扭矩、卡套管、固井质量差等一系列问题,影响井筒岩屑运移的因素众多且相互作用复杂。当前研究及应用也有诸多问题亟待解决,有必要对大位移井井筒岩屑运移进一步探讨。系统总结了岩屑运移的机理、研究方法、影响因素、评价标准及现场措施,并在此基础上对当前岩屑运移研究进行了展望,以期为大位移井岩屑运移研究及工程实践提供参考。

Review of Hole Cleaning Research in Extended-Reach Drilling

In drilling extended-reach wells, hole cleaning has become one of the main difficulties that affect drilling safety, costs and efficiency. Excessive accumulation of drilling cuttings in the wellbore will cause high drag and torque, stuck pipe, bad cementation and many other problems. Moreover, the mechanisms of various factors affecting hole cleaning are very complicated, and there are many unsolved problems in the hole cleaning research and field practice, so it is necessary to review the cuttings transport process furthermore. In this paper, the mechanisms, research methodologies, affecting factors, evaluation standards, and field strategies, and research prospect of cuttings transport are summarized and analyzed so as to facilitate the hole cleaning research and field practice.