发明名称 |
FLAPPER STABILIZATION FOR BACK PRESSURE VALVE |
摘要 |
A valve assembly can include a longitudinal flow passage, a first longitudinal section of the flow passage having less flow area than a second longitudinal section of the flow passage, and a valve that permits flow in only one direction through the flow passage, the valve including a closure member. In an open position, the closure member can be disposed between the second flow passage section and a chamber in fluid communication with the first flow passage section. A method can include connecting a valve assembly in a tubular string, the valve assembly including a valve that permits flow in only one direction through a longitudinal flow passage of the valve assembly, and flowing fluid in the one direction through the tubular string, thereby displacing a closure member of the valve to an open position and preventing displacement of the closure member toward a closed position. |
申请公布号 |
WO2016126267(A1) |
申请公布日期 |
2016.08.11 |
申请号 |
WO2015US14877 |
申请日期 |
2015.02.06 |
申请人 |
THRU TUBING SOLUTIONS, INC. |
发明人 |
HOLMBERG, AARON, D.;SCHULTZ, ROGER, L. |
分类号 |
E21B34/06;E21B17/00;F16K1/16 |
主分类号 |
E21B34/06 |
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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