Invention Grant
- Patent Title: External hydraulic tieback connector
- Patent Title (中): 外部液压接头连接器
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Application No.: US12492340Application Date: 2009-06-26
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Publication No.: US09062513B2Publication Date: 2015-06-23
- Inventor: Joseph W. Pallini, Jr. , Steven Wong
- Applicant: Joseph W. Pallini, Jr. , Steven Wong
- 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: E21B33/038
- IPC: E21B33/038

Abstract:
A connector for tie back liners has a tubular housing having at least one interior locking dog window. A setting chamber having a setting piston is located in the housing. A retraction chamber is in the housing, spaced axially from the setting chamber and having a retracting piston. Locking dogs are movably coupled in the locking dog window and axially spaced between the setting chamber and the retraction chamber. An actuating sleeve has a cam surface in engagement with the locking dogs and end portions with the setting piston and the retracting piston. Linking elements are in engagement with the locking dogs and a load shoulder located in the housing. The linking elements extend through linking element windows in the actuating sleeve. A shock absorber on the end of the housing absorbs shock when the connector lands on a wellhead.
Public/Granted literature
- US20090322074A1 External Hydraulic Tieback Connector Public/Granted day:2009-12-31
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