A centralizer sub for cementing a tubular string in a wellbore includes: a tubular body; a centralizer disposed along an outer surface of the body and having a pair of collars and a plurality of bow springs connecting the collars; and a joint longitudinally linking the centralizer to the body. The joint has: a groove formed in and around the body outer surface, and a plurality of protrusions formed integrally with or mounted to one of the collars and extending into the groove.
申请公布号
EP2960426(A3)
申请公布日期
2016.03.23
申请号
EP20150173195
申请日期
2015.06.22
申请人
WEATHERFORD/LAMB, INC.
发明人
RODRIQUE, MAXIME R.;DUFRENE, PHILIP E.;MARTIN, BEAU H.;KIESS, CHRISTIAN;HELMS, MARTIN;KYZAR, ADAM