套管钻井技术的早期井涌监测和井控技术措施的分析研究  

An analytical study on early kick detection and well control considerations for casing while drilling technology

作　　者：Said K.Elsayed Hany M.Azab Adel M.Salem Said K.Elsayed;Hany M.Azab;Adel M.Salem(Faculty of Petroleum and Mining Engineering,Suez University,Suez 43528,Egypt)

机构地区：[1]苏伊士大学石油和矿业工程学院,苏伊士43528,埃及

出　　处：《中国科学技术大学学报》2022年第5期40-51,I0002,I0003,共14页JUSTC

基　　金：supported by the Faculty of Petroleum and Mining Engineering,Suez University,Egypt,under supervision of Petroleum Department Head Dr.Adel M.Salem。

摘　　要：分析研究了套管钻井(casing while drilling,CwD)技术的早期井涌监测和井控技术措施,提出了一种利用数学模型来评估常规钻井和套管钻井技术的最大井涌余量和允许关井时间的简化方法。Casing while drilling(CwD) technology is designed to reduce drilling time and expenses by improving the wellbore stability,fracture gradient,and formation damage while reducing the exposure time.However,for the purpose well control,the wellbore geometry and volumes differ from those obtained via a conventional drilling technique,thereby requiring a different approach.This study discusses well control principles for CwD operations.It presents a simplified method for evaluating the maximum kick tolerance and allowable well shut-in time for both conventional and CwD techniques using a mathematical model.Preliminary results revealed that the use of CwD leads to an annulus pressure loss three times higher than that observed in the conventional drilling.In addition,the kick tolerance is reduced by 50% and the maximum allowable well shut-in time is reduced by 65%,making an early kick detection system necessary.

关 键 词：套管钻井 常规钻井 井涌余量 早期井涌监测 井控 

分 类 号：TE2[石油与天然气工程—油气井工程]