公开(公告)号：EP2594731B1

公开(公告)日：2019-03-13

申请号：EP12192976.4

申请日：2012-11-16

申请人： Weatherford Technology Holdings, LLC

发明人： Hannegan, Don M. ,  Pena, Cesar ,  Pavel, David ,  Grayson, Michael Brian ,  Boutalbi, Said ,  Cooper, Todd Douglas ,  Dunn, Timothy P. ,  Zamora Jr., Frank

IPC分类号： E21B33/13 ,  E21B33/16

公开(公告)号：EP2594731A3

公开(公告)日：2016-09-21

申请号：EP12192976.4

申请日：2012-11-16

申请人： Weatherford Technology Holdings, LLC

发明人： Hannegan, Don M. ,  Pena, Cesar ,  Pavel, David ,  Grayson, Michael Brian ,  Boutalbi, Said ,  Cooper, Todd Douglas ,  Dunn, Timothy P. ,  Zamora Jr., Frank

IPC分类号： E21B33/13 ,  E21B33/16

CPC分类号： E21B47/0005 ,  E21B33/13 ,  E21B33/14 ,  E21B33/143 ,  E21B33/16 ,  E21B47/0001

摘要： A method of cementing a tubular string in a wellbore includes: deploying the tubular string into the wellbore; pumping cement slurry into the tubular string; launching a cementing plug after pumping the cement slurry; propelling the cementing plug through the tubular string, thereby pumping the cement slurry through the tubular string and into an annulus formed between the tubular string and the wellbore; and controlling flow of fluid displaced from the wellbore by the cement slurry to control pressure of the annulus.