Invention Grant
- Patent Title: Christmas tree and wellhead design
- Patent Title (中): 圣诞树和井口设计
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Application No.: US12472960Application Date: 2009-05-27
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Publication No.: US08371385B2Publication Date: 2013-02-12
- Inventor: Caspar G. Lewis
- Applicant: Caspar G. Lewis
- 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 ; E21B34/04
Abstract:
The device described herein combines a subsea wellhead and a tree mandrel into a single piece. The wellhead includes a tree valve block having an upper and lower section. The lower valve block section is integral with the wellhead and includes access between the production line and the tubing annulus to the main bore of the wellhead.
Public/Granted literature
- US20090294131A1 Christmas Tree and Wellhead Design Public/Granted day:2009-12-03
Information query
