发明名称 |
Reinforcing element and demand sensitive pressure intensifier for sealing a well casing |
摘要 |
A reinforcing element for an elastomeric sealing element for use within a well casing and passable through production tubing is formed of two metallic plate members having a plurality of radially extending projections, and the radially extending projections are bent and joined to one another to allow the reinforcing element to be passed through production tubing. A demand sensitive pressure intensifier for use with a hydraulic fluid pump and passable through production tubing has a means for compressing hydraulic fluid to a pressure which exceeds the maximum output pressure of the pump, and the compression means is selectively actuated when the output pressure of the pump reaches a predetermined pressure value.
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申请公布号 |
US4545433(A) |
申请公布日期 |
1985.10.08 |
申请号 |
US19830544660 |
申请日期 |
1983.10.24 |
申请人 |
SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
WAMBAUGH, JOHN O. |
分类号 |
E21B33/12;E21B33/128;E21B33/129;E21B33/134;(IPC1-7):E21B33/128 |
主分类号 |
E21B33/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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