- Patent Title: Apparatus and methods of running casing in a dual gradient system
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Application No.: US14179278Application Date: 2014-02-12
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Publication No.: US09657548B2Publication Date: 2017-05-23
- Inventor: Marcel Budde , Brent J. Lirette , Michael Logiudice
- Applicant: Weatherford Technology Holdings, LLC
- Applicant Address: US TX Houston
- Assignee: Weatherford Technology Holdings, LLC
- Current Assignee: Weatherford Technology Holdings, LLC
- Current Assignee Address: US TX Houston
- Agency: Patterson & Sheridan, LLP
- Main IPC: E21B33/14
- IPC: E21B33/14 ; E21B33/13 ; E21B33/16 ; E21B21/00 ; E21B21/08 ; E21B43/10
Abstract:
A method of running casing in a dual gradient system includes lowering a casing into a low density fluid region and allowing the low density fluid to enter the casing; releasing a plug into the casing; supplying a high density fluid behind the plug; and lowering the casing into a high density fluid region until target depth is reached.
Public/Granted literature
- US20140224487A1 APPARATUS AND METHODS OF RUNNING CASING IN A DUAL GRADIENT SYSTEM Public/Granted day:2014-08-14
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