钻井过程中岩屑运移模型研究进展

随着斜井和水平井数量的不断增加，井眼清洁已成为钻井的关键技术和难题之一。在过去的60多年里，人们对钻井过程中的岩屑运移问题进行了大量的实验和理论研究，对这一课题有了较多的认识，建立了一些模型，为实际钻井过程中水力参数设计提供了有效的依据。本文对描述岩屑运移规律的经验模型和分层理论模型进行了系统的总结，并专门对泡沫携岩模型进行了总结，在此基础上对岩屑运移模型的发展进行展望，最后给出了研究建议，为今后深入开展岩屑运移研究提供参考。

Advances of Cuttings Transport Models During Oil Drilling

With the increasing number of inclined wells and horizontal wells, the hole cleaning has become one of the key technologies and difficulties in oil drilling. In the past 60 years, a lot of experiments and theoretical studies have been done on cuttings transport in drilling process, and more knowledge has been gained on this subject. Some models have been established, which provides an effective basis for the design of hydraulic parameters in actual drilling process. In this paper, the empirical models and layer theoretical models describing the cuttings transport rule are systematically summarized, and the models for cuttings transport with foam are summarized. On the basis of this, the development trend of the model is prospected. Finally, the research proposals are given, which will provide references for further research on cuttings transport in the future.