发明名称 |
SUBSURFACE SAFETY VALVE WITH CLOSURE PROVIDED BY THE FLOWING MEDIUM |
摘要 |
Devices and methods for selectively closing and opening flow of production fluid (oil, gas, or water) through the flowbore of a production string by chemically altering the phase of fluid media flowing through the production tubing to form a substantially solid plug or blockage. The phase of the fluid media is altered by selectively injecting a predetermined catalyst into a portion of the flowbore wherein it is desired to create a plug or blockage. When it is desired to remove the blockage, a dissolving agent is selectively added to the flowbore via a reversing sub to reverse the phase of the blockage from solid to liquid/gas. As the blockage is dissolved, flow is reestablished within the flowbore. |
申请公布号 |
WO2007109489(A2) |
申请公布日期 |
2007.09.27 |
申请号 |
WO2007US64035 |
申请日期 |
2007.03.15 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
MORGAN, RYAN, J.;SHAW, BRIAN, S. |
分类号 |
E21B34/10 |
主分类号 |
E21B34/10 |
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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