Invention Grant
- Patent Title: Section-balanced electric safety valve
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Application No.: US16462150Application Date: 2018-07-24
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Publication No.: US11035199B2Publication Date: 2021-06-15
- Inventor: James Dan Vick, Jr. , Bruce Edward Scott
- Applicant: Halliburton Energy Services, Inc.
- Applicant Address: US TX Houston
- Assignee: Halliburton Energy Services, Inc.
- Current Assignee: Halliburton Energy Services, Inc.
- Current Assignee Address: US TX Houston
- Agency: McGuireWoods LLP
- International Application: PCT/US2018/043388 WO 20180724
- International Announcement: WO2020/023018 WO 20200130
- Main IPC: E21B34/06
- IPC: E21B34/06 ; F16K1/20 ; F16K31/06

Abstract:
Provided are electric safety valves and methods of use. An electric safety valve comprises an electric actuator positioned in an interior chamber of the electric safety valve; the interior chamber comprising a dielectric fluid and being pressure and temperature compensated with a flow passage extending axially through the electric safety valve. The pressure and temperature compensation is performed via a compensating subassembly in pressure communication with the interior chamber thereby providing a section-balanced electric safety valve. The electric safety valve further comprises a protective sleeve separating the interior chamber from the flow passage. The electric safety valve further comprises at least one compression spring rod coupled to a closure member capable of restricting or preventing fluid flow through the flow passage. A method includes actuating the electric actuator; the electric actuator being magnetically coupled to the closure member such that actuation of the electric actuator pivots the closure member.
Public/Granted literature
- US20200270965A1 SECTION-BALANCED ELECTRIC SAFETY VALVE Public/Granted day:2020-08-27
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