Invention Grant
- Patent Title: Low-power electric safety valve
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Application No.: US15856834Application Date: 2017-12-28
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Publication No.: US10724332B2Publication Date: 2020-07-28
- Inventor: Robert C. Henschel, Jr. , Samuel E. Herod , Paul R. Boriack , Shane W. Pfaff , Thomas G. Hill, Jr. , Jason C. Mailand
- Applicant: CHEVRON U.S.A. INC.
- Applicant Address: US CA San Ramon
- Assignee: Chevron U.S.A. Inc.
- Current Assignee: Chevron U.S.A. Inc.
- Current Assignee Address: US CA San Ramon
- Agency: Hunton Andrews Kurth LLP
- Agent Gregory L. Porter
- Main IPC: E21B34/06
- IPC: E21B34/06 ; E21B34/00

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.
Public/Granted literature
- US20190203564A1 LOW-POWER ELECTRIC SAFETY VALVE Public/Granted day:2019-07-04
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