Patent ID: 11867043
Assignee: KLX ENERGY SERVICES LLC
Field: Mechanical elements (Mechanical engineering)
Classification: CPC E  F | IPC E  F

Claim 29:
30. A method of controlling pressure at a well site, comprising:
placing a pressure bleed-off valve in fluid communication with a high pressure frac line, wherein the pressure bleed-off valve comprises:
a fluid bypass line having a fluid inlet teed into the high pressure frac line, and an opposing fluid outlet;
a high pressure transducer located proximate the fluid inlet; a first plug valve residing along the fluid bypass line;
a first electric actuator residing on the first plug valve and configured to rotate the first plug valve between open and closed positions;
a second plug valve also residing along the fluid bypass line;
a second electric actuator residing on the second plug valve and configured to rotate the second plug valve between open and closed positions; and
a controller configured to send command signals to the first actuator to rotate the first plug valve between open and close positions, and to the second actuator to rotate the second plug valve between open and close positions;

and wherein:
the first plug valve and corresponding first electric actuator reside proximate the high pressure transducer; and
the second plug valve and corresponding second electric actuator reside proximate the fluid outlet of a second fluid bypass line; and
sending a control instruction from a remote computer to the controller.