发明名称 |
SAFETY SYSTEM FOR OIL AND GAS DRILLING OPERATIONS |
摘要 |
A sub-surface safety system for hydrocarbon drilling operations is provided and includes at least one casing within a wellbore that extends into a first portion of a formation from the surface of the formation. A shut-in device is positioned in the casing so as to be below the surface of the formation. The well shut-in device defines a device passageway and is operable to sever a drill string extending through the device passageway and form a barrier in the device passageway that restricts wellbore fluids below the barrier from migrating up the casing to the surface.
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申请公布号 |
US2013008670(A1) |
申请公布日期 |
2013.01.10 |
申请号 |
US201113177327 |
申请日期 |
2011.07.06 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC.;HALES JOHN HUDSON |
发明人 |
HALES JOHN HUDSON |
分类号 |
E21B33/12;E21B33/06 |
主分类号 |
E21B33/12 |
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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