发明名称 |
Flow and pressure control packer valve |
摘要 |
A packer valve for regulating the fluid flow rate and pressure within a fluid conduit such as a well, includes a housing, and an inflatable packer element mounted on an elongated mandrel. The inside diameter of the housing is formed with an arrangement of annular grooves which circumscribe the inflatable packer element. The inflatable packer element is adapted to adjust an annulus between the housing and the inflatable packer element to provide complete shutoff of fluid flow or to provide a tortuous flow path for fluid flow within the annulus. The tortuous flow path causes a frictional pressure loss. The amount of the pressure loss is controlled by the inflation pressure of the inflatable packer element, by the shape of the annular grooves, and by the length of the inflatable packer element.
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申请公布号 |
US5316081(A) |
申请公布日期 |
1994.05.31 |
申请号 |
US19930027839 |
申请日期 |
1993.03.08 |
申请人 |
BASKI WATER INSTRUMENTS |
发明人 |
BASKI, HENRY A.;HAUCK, EMIL |
分类号 |
E21B33/127;E21B34/06;E21B34/10;(IPC1-7):E21B33/00;E21B23/00 |
主分类号 |
E21B33/127 |
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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