发明名称 |
ANNULAR PRESSURE MONITORING DURING HYDRAULIC FRACTURING |
摘要 |
<p>A pressure or flow responsive valve is provided in a hydraulic fracturing assembly so that if the formation sands out during proppant pumping and pressure in the bypass to the annulus around the work string rises, the bypass is closed by the valve to prevent overpressure of lower pressure rated components further uphole from the formation being treated. These components could be large casing or the blowout preventer assembly.</p> |
申请公布号 |
WO2009038999(A1) |
申请公布日期 |
2009.03.26 |
申请号 |
WO2008US75696 |
申请日期 |
2008.09.09 |
申请人 |
BAKER HUGHES INCORPORATED;JOHNSON, MICHAEL, H. |
发明人 |
JOHNSON, MICHAEL, H. |
分类号 |
E21B34/08;E21B43/00;H04R1/28 |
主分类号 |
E21B34/08 |
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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