Invention Grant
- Patent Title: Fully supported c-ring slip retention system
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Application No.: US15040741Application Date: 2016-02-10
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Publication No.: US09938787B2Publication Date: 2018-04-10
- Inventor: Steven M. Zakharia , Curtis W. Payne , Frank D. Kalb
- Applicant: Dril-Quip, Inc.
- Applicant Address: US TX Houston
- Assignee: Dril-Quip, Inc.
- Current Assignee: Dril-Quip, Inc.
- Current Assignee Address: US TX Houston
- Agency: Baker Botts L.L.P.
- Main IPC: E21B23/01
- IPC: E21B23/01 ; E21B43/10

Abstract:
An improved c-ring slip retention system and method for extraction of the c-ring slip are provided. The c-ring slip retention system may use an axially movable support sleeve with a support ring for securing the c-ring slip against a retention lip of the liner hanger body. The disclosed retention system prevents the c-ring slip from being prematurely extracted from a liner hanger body while the liner hanger is lowered through a borehole. The c-ring slip retention system may also include anti-rotation features that prevent the c-ring slip from rotating relative to the liner hanger body. A single actuation of the support sleeve in an axial direction may unlock the c-ring slip from the retention lip, disengage the anti-rotation features, compress the c-ring slip out of the keyed profile, and extract the c-ring slip from the liner hanger body.
Public/Granted literature
- US20170226815A1 FULLY SUPPORTED C-RING SLIP RETENTION SYSTEM Public/Granted day:2017-08-10
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