The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 22, 2023
Filed:
Dec. 20, 2021
Halliburton Energy Services, Inc., Houston, TX (US);
Lorenzzo Breda Minassa, Tomball, TX (US);
Robert William Gissler, Spring, TX (US);
Halliburton Energy Services, Inc., Houston, TX (US);
Abstract
An electro-hydraulic control system actuates a control valve. A control module is controlled via two hydraulic lines and two electrical power lines. The control module uses one of the hydraulic lines as a 'supply' line and the other line as a 'return' line. The control module includes two normally closed (NC) solenoid valves (SOVs) that are coupled to the electrical power lines and can be controlled from the surface to open or close. The opening or closing of the NC SOVs in cooperation with hydraulic pressure on a “supply” line of the hydraulic lines operates the control valve. A NC hydraulic activated pilot cartridge in the control module can be actuated open, and movement of the control valve in either direction can continue for a short time without energizing either of the NC SOVs, therefore lowering a power demand required by the system.