Patent ID: 11946338
Assignee: BAKER HUGHES, A GE COMPANY, LLC
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 9:
10. A resource recovery and exploration system comprising:
an uphole system; and
a downhole system including a downhole string extending into a wellbore operatively connected to the uphole system, the downhole string including a pulser alternator generator having a main valve assembly, an alternator, and a control valve assembly operatively connected to the main valve assembly and the alternator, the control valve assembly comprising:
a body including a fluid passage having a fluid inlet and a fluid outlet, wherein at least a portion of the body is formed from a first magnetic material;
a sleeve slidingly mounted to the body, the sleeve selectively sliding from a first position covering one of the fluid outlet and the fluid inlet to a second position exposing one of the fluid outlet and the fluid inlet, wherein at least a portion of the sleeve is formed from a second magnetic material;
a magnetic circuit having a gap defined within the control valve assembly, wherein the portion of the body formed from the first magnetic material defines a first portion of the magnetic circuit and the portion of the sleeve formed from the second magnetic material forms another portion of the magnetic circuit;
a biasing member in operable communication with the sleeve; and
a solenoid mounted to the body about at least a portion of the first magnetic material of the body, the solenoid being selectively activated to create a magnetic field across the gap in the magnetic circuit, the magnetic circuit causing the sleeve to slide, narrowing the gap and sliding from the first position to the second position to produce a pressure pulse in the wellbore, wherein the biasing member biases the sleeve back to the first position.