加压泥浆帽钻井新技术探讨  

Discussion on New Technology of Pressurized Mud Cap Drilling

作　　者：张洪杰 杨保健 冯世佳 张诚成 ZHANG Hongjie;YANG Baojian;FENG Shijia;ZHANG Chengcheng(China Offshore Services Limited,Tianjin 300459,China;CNOOC Tianjin Branch,Tianjin 300459,China)

机构地区：[1]中海油田服务股份有限公司一体化和新能源事业部,天津300459 [2]中海石油(中国)有限公司天津分公司,天津300459

出　　处：《化工管理》2023年第33期88-90,共3页Chemical Engineering Management

摘　　要：加压泥浆帽钻井作为一种新的钻井形式,主要用于钻穿发育成熟且联通性好的裂缝型或溶洞型地层。地层类型主要为碳酸盐或结晶基底产层,该类型地层的特点是无论使用何种类型的钻井液或钻井液密度,都会发生完全漏失,且漏失后无法通过任何形式的堵漏手段封堵地层,包括注入固井水泥。加压泥浆帽钻井通过改变常规钻井思维、选取合适的钻井液密度以及设计施工程序等方式,实现在没有返出的情况下安全钻穿完全漏失地层的目的。As a new drilling form,pressurized mud cap drilling(PMCD)is mainly used to drill through mature and well-connected fracture or cave formations.The formation type is primarily a carbonate or crystalline basement pay,which is characterized by complete loss regardless of the type of drilling fluid or drilling fluid density used,and after the loss,the formation cannot be closed by any form of plugging,including the injection of cementing cement.By changing the conventional drilling thinking,selecting suitable drilling fluid density and designing construction procedures,PMCD can safely drill through the completely lost formation without returning.

关 键 词：加压泥浆帽 环空液体 旋转控制头 环空压力 

分 类 号：TE242[石油与天然气工程—油气井工程]