Invention Grant
- Patent Title: Wellhead tree pressure compensating device
- Patent Title (中): 井口树压力补偿装置
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Application No.: US12980994Application Date: 2010-12-29
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Publication No.: US08695712B2Publication Date: 2014-04-15
- Inventor: Alexander Urquhart , William D. Munro
- Applicant: Alexander Urquhart , William D. Munro
- Applicant Address: US TX Houston
- Assignee: Vetco Gray Inc.
- Current Assignee: Vetco Gray Inc.
- Current Assignee Address: US TX Houston
- Agency: Bracewell & Giuliani LLP
- Main IPC: E21B33/035
- IPC: E21B33/035 ; E21B33/043 ; E21B34/04 ; E21B23/04 ; E21B33/134
Abstract:
A pressure mitigating device is used to reduce pressure in a void within a wellhead housing. In one embodiment, the pressure mitigating device includes two plates that define a void between them. Increased pressure in the wellhead housing causes the plates to elastically displace towards each other. The plates contact each other, limiting the displacement prior to plastic deformation.
Public/Granted literature
- US20120168173A1 WELLHEAD TREE PRESSURE COMPENSATING DEVICE Public/Granted day:2012-07-05
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