发明名称 Load ring for lifting by elevator, of casing having no upset
摘要 A cylindrical ring sized to slide over the box end of an oilfield tubular having a given diameter, has a shoulder at one its ends and a sidewall along its length. The sidewall has a circumferential groove about its interior surface housing a band which can be made tight against the exterior surface of the oilfield tubular by a latch accessible through a slot in the sidewall, and which becomes even tighter if the tubular attempts to escape from the band. In a first orientation, the cylindrical ring is used as a load ring. By turning the cylindrical rings upside down, the cylindrical ring is used as a thread protector for the pin end of the tubular.
申请公布号 US2008238117(A1) 申请公布日期 2008.10.02
申请号 US20080082736 申请日期 2008.04.14
申请人 LATIOLAIS BURNEY J;LUTGRING KEITH T;MOODY BRAXTON I;SAICHUK JOHN K M;HAWKINS SAMUEL P 发明人 LATIOLAIS BURNEY J.;LUTGRING KEITH T.;MOODY BRAXTON I;SAICHUK JOHN K. M.;HAWKINS SAMUEL P.
分类号 B66C1/10;E21B19/10 主分类号 B66C1/10
代理机构 代理人
主权项
地址