Multi-deployable subsea stack system
AssigneeCameron International Corporation
InventorsJohnnie E. Kotrla, Melvyn F. Whitby, David J. McWhorter, Glenn J. Chiasson
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Abstract
Methods for deploying a subsea blowout preventer stack system comprising a lower marine riser package, a blowout preventer stack with a first ram blowout preventer, and an additional blowout preventer package releasably coupled to the blowout preventer stack and comprising a second ram blowout preventer. The subsea blowout preventer stack assembly can be deployed by coupling a drilling riser to the lower marine riser package that is releasably connected to the blowout preventer stack. The lower marine riser package and blowout preventer stack are then toward a subsea wellhead and then landed on the additional blowout preventer package that is coupled to the subsea wellhead.
Claims14
A subsea blowout preventer stack deployment method comprising:
- coupling a drilling riser to a lower marine riser package that is releasably connected to a blowout preventer stack;
- lowering the lower marine riser package and blowout preventer stack toward a subsea wellhead;
- landing the blowout preventer stack on a first additional blowout preventer package that is coupled to the subsea wellhead, wherein the first additional blowout preventer package comprises a ram blowout preventer;
- deploying a second additional blowout preventer package to a subsea location;
- disconnecting the blowout preventer stack from the first additional blowout preventer package;
- and
- landing the blowout preventer stack on the second additional blowout preventer package.
A subsea drilling method comprising:
- deploying a first additional blowout preventer package to a subsea wellhead, wherein the first additional blowout preventer package comprises a ram blowout preventer;
- utilizing a drilling riser to deploy a lower marine riser package and a blowout preventer stack from a drilling rig;
- landing the blowout preventer stack on the first additional blowout preventer package;
- performing drilling operations with the drilling rig while utilizing the ram blowout preventer in the first additional blowout preventer package;
- deploying a second additional blowout preventer package to a subsea location;
- disconnecting the blowout preventer stack from the first additional blowout preventer package;
- and
- landing the blowout preventer stack on the second additional blowout preventer package.
Dependencies are inferred from the claim text.