Offshore well system with a subsea pressure control system movable with a remotely operated vehicle

摘要

An offshore well drilling system for drilling a subsea well is presented that includes a floating platform, a surface BOP stack, a riser, and a driveable environmental safe guard system. The safe guard system includes an upper wellhead connector, a lower wellhead connector, a blowout preventer with shearing blind rams, and a subsea pressure control system. The subsea pressure control system can be electric, hydraulic, acoustic, or ROV actuated. More importantly, the environmental safeguard system is moveable, and can be driven around using as ROV. The present invention provides swift disconnect and recovery for emergency situations. The subsea environmental safe guard system is also much lighter in weight than traditional subsea stacks.

主权项

1. An offshore well system for a subsea well with a subsea wellhead, including:
a floating platform; a surface blowout preventer (“BOP”) at the floating platform; a riser extending subsea from the platform in fluid communication with the surface BOP; and a subsea pressure control assembly including:
a riser connector connectable to the subsea riser;a wellhead connector connectable to the subsea wellhead;a subsea pressure control device; anda control system configured to operate the riser connector, the wellhead connector, and the subsea pressure control device; andwherein the subsea pressure control assembly is configured to be transported intact by a remotely operated vehicle (ROV).