Patent ID: 11933129
Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A drilling system, comprising:
a rig; and
a subsea wellhead assembly configured to perform a plurality of drilling functions, the subsea wellhead assembly comprising a wellhead, a blowout preventer stack, and a lower marine riser package (LMRP), wherein:
the plurality of drilling functions of the subsea wellhead assembly are effected electrically and without supply of hydraulic fluid from the rig;
the blowout preventer stack includes an energy storage device and at least one remote operating vehicle (ROV) charging port coupled to the energy storage device, the ROV charging port being configured to receive power from a ROV to charge the energy storage device for the blowout preventer stack; and
at least one drilling function of the plurality of drilling functions is performed using charge from the energy storage device.