控压钻井技术研究

RESEARCH ON MANAGED PRESSURE DRILLING TECHNOLOGY

控压钻井技术因其可有效降低窄密度窗口钻井喷、涌同层钻井工程复杂、提高钻井时效,已成为近年国内钻井新技术研发热点。控压钻井工艺有多种形式,包括井底恒定压力控压钻井、连续循环钻井和双梯度压力钻井。本文重点介绍了我院自主研发的基于井底恒压的控压钻井系统,并就利用该系统实现压力控制衔接的工艺方法。最后,给出室内实验数据。

Managed pressure drilling technology has been the hot topics of research and development drilling technique in recent years for its effective capacity to solve various drilling complexities such as kick and loss,and advance drill time efficiency while drilling with narrow density window.Managed pressure drilling technology has several variations,including constant bottomhole pressure(CBHP) MPD,continuous circulating drilling and dual gradient drilling.This paper mainly presented the CBHP-MPD system that is researched and developed by our institute,and its process to achieve pressure control with this system and the laboratory test data were put forward finally.