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:
Jul. 28, 2020
Filed:
Dec. 28, 2017
Chevron U.s.a. Inc., San Ramon, CA (US);
Robert C. Henschel, Jr., The Woodlands, TX (US);
Samuel E. Herod, Conroe, TX (US);
Paul R. Boriack, The Woodlands, TX (US);
Shane W. Pfaff, Spring, TX (US);
Thomas G. Hill, Jr., The Woodlands, TX (US);
Jason C. Mailand, The Woodlands, TX (US);
Chevron U.S.A. Inc., San Ramon, CA (US);
Abstract
A subsurface safety valve system for a wellbore is described. The system can include a tubular housing disposed within the wellbore having a cavity running in a longitudinal direction therethrough. The system can also include an electromagnetic device configured to receive electric power to create a magnetic field, and a flapper operative to open and close the cavity in response to the electric power received by the electromagnetic device. The flapper may open in response to the electric power exceeding a first electric power value and remain open in response to the electric power exceeding a second electric power value which is lower than the first electric power value.