Wells – Packers or plugs – Flow stopping type; e.g. – plug
Reexamination Certificate
2008-07-08
2008-07-08
Bagnell, David J. (Department: 3676)
Wells
Packers or plugs
Flow stopping type; e.g., plug
Reexamination Certificate
active
11413899
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: 3768563 (1973-10-01), Blount
patent: 5425424 (1995-06-01), Reinhardt et al.
patent: 5479986 (1996-01-01), Gano et al.
patent: 5607017 (1997-03-01), Owens et al.
patent: 5660232 (1997-08-01), Reinhardt
patent: 5765641 (1998-06-01), Shy et al.
patent: 6026903 (2000-02-01), Shy et al.
patent: 6076600 (2000-06-01), Vick, Jr. 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: 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.
Bagnell David J.
Baker Hughes Incorporated
Fuller Robert E
Rosenblatt Steve
LandOfFree
Disappearing plug does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Disappearing plug, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disappearing plug will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3909850