Wells – Processes – Placing or shifting well part
Reexamination Certificate
2007-07-27
2009-06-30
Gay, Jennifer H (Department: 3676)
Wells
Processes
Placing or shifting well part
C166S382000, C166S176000, C166S153000
Reexamination Certificate
active
07552779
ABSTRACT:
A system allows for sequential treatment of sections of a zone. Access to each portion can be with a sliding sleeve that has a specific internal profile. Pump down plugs can be used that have a specific profile that will make a plug latch to a specific sleeve. Pressure on the plug when latched allows a sequential opening of sleeves while zones already affected that are below are isolated. The pump down plugs have a passage that is initially obstructed by a material that eventually disappears under anticipated well conditions. As a result, when all portions of a zone are handled a flow path is reestablished through the various latched plugs. The plugs can also be blown clear of a sliding sleeve after operating it and can feature a key that subsequently prevents rotation of the plug on its axis in the event is later needs milling out.
REFERENCES:
patent: 5425424 (1995-06-01), Reinhardt et al.
patent: 5520252 (1996-05-01), McNair
patent: 5607017 (1997-03-01), Owens et al.
patent: 5660232 (1997-08-01), Reinhardt
patent: 5765641 (1998-06-01), Shy et al.
patent: 6012527 (2000-01-01), Nitis et al.
patent: 6026903 (2000-02-01), Shy et al.
patent: 6076600 (2000-06-01), Vick, Jr. et al.
patent: 6142225 (2000-11-01), McCorry et al.
patent: 6220350 (2001-04-01), Brothers et al.
patent: 6712153 (2004-03-01), Turley et al.
patent: 6769491 (2004-08-01), Zimmerman et al.
patent: 6896063 (2005-05-01), Chang et al.
patent: 6907936 (2005-06-01), Fehr et al.
patent: 6991037 (2006-01-01), Hocking
patent: 7243732 (2007-07-01), Richard
patent: 2003/0173089 (2003-09-01), Westgard et al.
patent: 2004/0149452 (2004-08-01), Pendleton
patent: 2004/0238173 (2004-12-01), Bissonnette et al.
patent: 2005/0205264 (2005-09-01), Starr et al.
patent: 2005/0205265 (2005-09-01), Todd et al.
patent: 2005/0205266 (2005-09-01), Todd et al.
Baker Hughes Incorporated
Fuller Robert E
Gay Jennifer H
Rosenblatt Steve
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