×

Supplying power to underwater devices

  • US 9,097,089 B2
  • Filed: 07/22/2011
  • Issued: 08/04/2015
  • Est. Priority Date: 08/03/2010
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method of supplying electrical power to at least one device at a tree of an underwater fluid extraction well, the method comprising:

  • using magnetic resonance coupling for wirelessly transmitting power from a supply to the at least one device, wherein there is a plurality of the at least one device, each device being powered via a respective receiver circuit which can be coupled by magnetic resonance coupling with a transmitter circuit of said supply;

    transmitting a code unique to at least one of the plurality of devices by wireless communication to the receiver circuit of the device, wherein said code is generated according to a demand from control circuitry in a subsea electronics module associated with the tree; and

    detecting the code at the receiver circuit of the device to cause power to be supplied to the device by magnetic resonance coupling;

    wherein the at least one device is a directional control valve that is powered according to the demand on a line from directional control valve control circuitry of the subsea electronics module.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×