发明授权
- 专利标题: Valve body for oilfield applications
- 专利标题(中): 油田应用阀体
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申请号: US622302申请日: 1990-12-05
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公开(公告)号: US5082020A公开(公告)日: 1992-01-21
- 发明人: Thomas F. Bailey , John E. Campbell
- 申请人: Thomas F. Bailey , John E. Campbell
- 申请人地址: TX Houston
- 专利权人: MASX Energy Services Group, Inc.
- 当前专利权人: MASX Energy Services Group, Inc.
- 当前专利权人地址: TX Houston
- 主分类号: E21B33/13
- IPC分类号: E21B33/13 ; E21B43/26 ; F16K15/02 ; F16K25/00
摘要:
A valve body for use in cementing, fracturing or acidizing operations in well drilling with improved wear resistance to extend the operating life of the valve. The valve includes a hardened metal valve head having urethane legs replaceably attached to the valve head. A urethane valve insert may also be provided to facilitate sealing engagement with the valve seat. The urethane legs reduce the overall weight of the valve to reduce the mass of the pumping valve against the valve seat thereby extending the life of the valve. The valve legs are attached to the valve head through fitting engagement and can be replaced and/or repaired.
公开/授权文献
- US5734943A Device having cartridge chamber with positioned cover 公开/授权日:1998-03-31