US 11,933,129 B2
Electrical drilling and production systems and methods
Vikas Rakhunde, Cypress, TX (US); Nathan Cooper, Cypress, TX (US); Justin Blair, Houston, TX (US); Michael W. Berckenhoff, Spring, TX (US); Michael Mancuso, Pavia (IT); and Matthew Givens, Houston, TX (US)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed on Jun. 23, 2023, as Appl. No. 18/340,639.
Application 18/340,639 is a continuation of application No. 16/313,460, granted, now 11,739,605, previously published as PCT/US2017/041367, filed on Jul. 10, 2017.
Claims priority of provisional application 62/360,404, filed on Jul. 10, 2016.
Prior Publication US 2023/0332477 A1, Oct. 19, 2023
Int. Cl. E21B 33/035 (2006.01); E21B 34/04 (2006.01)
CPC E21B 33/0355 (2013.01) [E21B 34/04 (2013.01)] 20 Claims
OG exemplary drawing
 
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.