Invention Grant
- Patent Title: Apparatus and methods for creation of down hole annular barrier
- Patent Title (中): 用于创建井下环形屏障的装置和方法
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Application No.: US11462471Application Date: 2006-08-04
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Publication No.: US07798225B2Publication Date: 2010-09-21
- Inventor: Richard Lee Giroux , Lev Ring
- Applicant: Richard Lee Giroux , Lev Ring
- Applicant Address: US TX Houston
- Assignee: Weatherford/Lamb, Inc.
- Current Assignee: Weatherford/Lamb, Inc.
- Current Assignee Address: US TX Houston
- Agency: Patterson & Sheridan, LLP
- Main IPC: E21B33/13
- IPC: E21B33/13

Abstract:
Methods and apparatus are provided for performing an expedited shoe test using an expandable casing portion as an annular fluid barrier. Further provided are methods and apparatus for successfully recovering from a failed expansion so that a shoe test can be completed without replacement of the expandable casing portion. In one recovery method, a selectively actuatable fluid circulation tool is provided to further expand the expandable portion or perform a cementing operation. Additionally, methods and apparatus are provided to drill a wellbore and form an annular fluid barrier in a single trip.
Public/Granted literature
- US20070029082A1 APPARATUS AND METHODS FOR CREATION OF DOWN HOLE ANNULAR BARRIER Public/Granted day:2007-02-08
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