发明名称 Deflection swivel and method
摘要 A deflectable in-line swivel that permits axial deflection of a tubular string is presented. The in-line swivel is preferably constructed as a ball and socket design whereby the ball of a swivel mandrel is permitted to articulate within a socket of a retainer sub. The system preferably includes a thrust bearing to allow the tensile loads to be carried across the swivel.
申请公布号 US7165635(B2) 申请公布日期 2007.01.23
申请号 US20040708752 申请日期 2004.03.23
申请人 SPECIALTY RENTAL TOOL & SUPPLY, LP 发明人 KAUFFMAN VERNON E.;LEETH DOUGLASS B.;LEMKE JOHN A.;SMITH MAX H.
分类号 E21B17/05;E21B17/00;E21B19/00;F16L27/00 主分类号 E21B17/05
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