发明名称 |
Flow actuated valve for use in a wellbore |
摘要 |
The present invention generally relates to a flow-actuated valve for use in a wellbore. The invention includes a body having a closing member and a seat. The closing member and seat are separable to open and close the valve, thereby allowing the flow of fluid through the valve. The invention further includes a retainer to initially retain the valve in the open position absent a predetermined fluid flow rate in a first direction for a predetermined time period. A biasing member thereafter urges the valve to the closed position, absent another fluid flow rate in the first direction.
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申请公布号 |
US6622795(B2) |
申请公布日期 |
2003.09.23 |
申请号 |
US20010995842 |
申请日期 |
2001.11.28 |
申请人 |
WEATHERFORD/LAMB, INC. |
发明人 |
HEBERT JOHN E.;BOUDREAUX JOSEPH J.;LAUREL DAVID F.;DARBY SCOTT A. |
分类号 |
E21B21/10;(IPC1-7):E21B34/00 |
主分类号 |
E21B21/10 |
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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