Patents by Inventor Robert C. Henschel, JR.

Robert C. Henschel, JR. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Low-power electric safety valve
    Patent number: 10724332
    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.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: July 28, 2020
    Assignee: Chevron U.S.A. Inc.
    Inventors: Robert C. Henschel, Jr., Samuel E. Herod, Paul R. Boriack, Shane W. Pfaff, Thomas G. Hill, Jr., Jason C. Mailand
  • LOW-POWER ELECTRIC SAFETY VALVE
    Publication number: 20190203564
    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.
    Type: Application
    Filed: December 28, 2017
    Publication date: July 4, 2019
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Robert C. Henschel, JR., Samuel E. Herod, Paul R. Boriack, Shane W. Pfaff, Thomas G. Hill, JR., Jason C. Mailand
  • Method and Apparatus for Inserting a Tubular String into a Well
    Publication number: 20150204163
    Abstract: A valve to act as a barrier to fluid movement in a tubular is provided. A flapper in the valve may be opened by application of a selected pressure differential across the flapper. The flapper opens to allow a cylinder to shift and cover the open flapper. A method of placing a tubular string within a well using the valve as an isolation valve to form gas filled chambers for floating the tubular string into the well is also disclosed.
    Type: Application
    Filed: April 1, 2015
    Publication date: July 23, 2015
    Inventors: Thomas G. Hill, Robert C. Henschel, JR., Shane W. Pfaff