新型双梯度钻井技术——CAML钻井方法  

New Double Gradient Drilling Technology-CAML Drilling Method

作　　者：王朝辉[1,2] 蒋宏伟 连志龙 刘献[1,2] 

机构地区：[1]中国石油集团钻井工程技术研究院,北京102206 [2]中国石油大学(北京),北京102249

出　　处：《内蒙古石油化工》2017年第5期56-59,共4页Inner Mongolia Petrochemical Industry

基　　金：国家重点基础研究发展计划(973计划)课题"深水钻完井工程设计理论与风险管控"(编号2015CB251206);中国石油天然气集团公司科学研究与技术开发项目"钻井工程设计与控制一体化软件V3.0开发"(编号2016B-4006)

摘　　要：控制水泥浆液面高度(Controlled Annular Mud Level)钻井是在无隔水管钻井技术上发展而来的一种新型双梯度钻井技术,主要由海底泵模块、泥浆返回管线、隔水管改进接头等组成。通过调节隔水管上部钻井液液面高度,能够实现钻井液的闭路循环及对井底压力的精确控制。该技术具有井底压力精确控制、钻进窄密度窗口、早期井涌检测、控压固井等特性,可使用常规井控措施并可切换为常规钻井方法。文章详细分析了CAML钻井的系统组成、工艺原理、技术特点,并建议结合我国深水钻井实际情况,尽快开展相关钻井技术的研究。Controlled Annular Mud Level（CAML）drilling is a new type of dual gradient drilling technology developed in riserless drilling technology,mainly composed of subsea pump module,mud return pipeline riser,improved joint etc.By adjusting the upper part of the riser drilling fluid level,can realize the closed circulation of drilling fluid and precise control of bottomhole pressure.This technology has the precise control of bottom hole pressure,drilling narrow density windows,early kick detection,pressure control and cementing properties,using conventional well control measures and switch to conventional drilling methods.The article detailed analysis of the technical characteristics,system of CAML drilling technology principle,and combined with the actual situation,suggestions China＇s deepwater drilling,drilling technology research carried out as soon as possible.

关 键 词：CAML钻井 控压固井 早期井涌监测 深水钻井 

分 类 号：TE242[石油与天然气工程—油气井工程]