发明名称 |
DUAL ACTIVITY DRILLING SHIP |
摘要 |
Dual gradient drilling may be performed by anchoring drilling tubulars (18) from a drilling ship (10) on the seabed. The drilling tubulars may include an inline pump (26) for pumping mud through another set of tubulars (16) that actually drill the well. Then dual gradient drilling may be instituted by controlling the pressure by controlling the operation of the pump (26). |
申请公布号 |
WO2012028949(A3) |
申请公布日期 |
2013.05.23 |
申请号 |
WO2011IB02032 |
申请日期 |
2011.09.02 |
申请人 |
STENA DRILLING LTD.;HUMPHREYS, GAVIN |
发明人 |
HUMPHREYS, GAVIN |
分类号 |
E21B21/08;E21B7/12;E21B7/128;E21B21/00;E21B33/035 |
主分类号 |
E21B21/08 |
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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