发明名称 Drill pipe handling apparatus
摘要 A drill pipe handling apparatus for oil and gas drilling rigs, the drill pipe having an enlarged diameter section positioned between the ends of the drill pipe. The enlarged diameter section of drill pipe has a shoulder which corresponds with and is engaged by a shoulder located on wedge members of lower and upper holders on a drilling rig for supporting the drill pipe without damaging it during and after addition or removal of joints of drill pipe.
申请公布号 US6364012(B1) 申请公布日期 2002.04.02
申请号 US20000586233 申请日期 2000.06.02
申请人 OIL & GAS RENTAL SERVICES, INC. 发明人 ADAMS BURT A.;SHAFER WILLIAM C.;HENRY NORMAN A.
分类号 E21B19/00;E21B19/07;E21B19/16;E21B33/035;E21B33/043;(IPC1-7):E21B19/06;E21B19/18 主分类号 E21B19/00
代理机构 代理人
主权项
地址