Invention Grant
- Patent Title: Constructed annular safety valve element package
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Application No.: US14422582Application Date: 2012-08-27
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Publication No.: US10253605B2Publication Date: 2019-04-09
- Inventor: Ewan Ogilvie Robb , Jeremy Buc Slay , Winston James Webber
- Applicant: Ewan Ogilvie Robb , Jeremy Buc Slay , Winston James Webber
- Applicant Address: US TX Houston
- Assignee: Halliburton Energy Services, Inc.
- Current Assignee: Halliburton Energy Services, Inc.
- Current Assignee Address: US TX Houston
- Agency: Baker Botts L.L.P.
- Agent Scott Richardson
- International Application: PCT/US2012/052533 WO 20120827
- International Announcement: WO2014/035369 WO 20140306
- Main IPC: E21B43/12
- IPC: E21B43/12 ; E21B33/12 ; E21B33/128 ; E21B34/08 ; E21B43/16 ; E21B34/10

Abstract:
An annular safety valve sealing package that is suitable for use in the presence of an acid gas and that is capable of retaining its material properties when the annular safety valve is retrieved is provided. The annular safety valve sealing package includes an annular safety valve having a tubular housing, a first annular sealing element including a first elastomeric material and disposed about the tubular housing, a second annular sealing element including a second elastomeric material and disposed about the tubular housing, and a third annular sealing element including a third elastomeric material and disposed about the tubular housing on an opposite side of the second annular sealing element from the first annular sealing element. At least two of the first elastomeric material, the second elastomeric material, or the third elastomeric material have different compositions.
Public/Granted literature
- US20150226047A1 Constructed Annular Safety Valve Element Package Public/Granted day:2015-08-13
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