Invention Grant
US08162063B2 Dual gradient drilling ship 有权
双梯度钻井船

Dual gradient drilling ship
Abstract:
Dual gradient drilling may be performed by anchoring drilling tubulars from a drilling ship on the seabed. The drilling tubulars may include an inline pump for pumping mud through another set of tubulars that actually drill the well. Then dual gradient drilling may be instituted by controlling the pressure by controlling the operation of the pump.
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