发明授权
- 专利标题: Spherical ball skate for continuous well string injectors
- 专利标题(中): 用于连续油井喷油器的球形溜冰鞋
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申请号: US14787407申请日: 2014-05-02
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公开(公告)号: US09488016B2公开(公告)日: 2016-11-08
- 发明人: Martin E. C. Gubbins , Sven W. Larsen
- 申请人: Celtic Machining Ltd.
- 申请人地址: CA Rainier, Alberta
- 专利权人: CELTIC MACHINING LTD.
- 当前专利权人: CELTIC MACHINING LTD.
- 当前专利权人地址: CA Rainier, Alberta
- 代理机构: Ade & Company Inc.
- 代理商 Kyle R. Satterthwaite; Ryan W. Dupuis
- 国际申请: PCT/CA2014/050421 WO 20140502
- 国际公布: WO2014/176702 WO 20141106
- 主分类号: E21B19/08
- IPC分类号: E21B19/08 ; E21B19/22 ; B66D3/00
摘要:
A skate for an injector apparatus in which gripper dies on a pair of endless chains driven around respective closed loop paths on different sides a continuous wellbore string are forced against the continuous string by forcing a set of the skates toward theretoward from inside the closed loop paths of the endless chains. The inventive skate features a skate body carrying a plurality of spherical balls that are exposed on a side of the skate that faces toward the continuous string in order to allow riding of endless chains over exposed surfaces of the spherical balls as the endless chains are driven through the respective closed-loop paths, whereby the gripper dies ride over the spherical balls of said skates under the forcing of said skates toward the continuous string.