Wellbore apparatus

Details Wellbore apparatus Wellbore apparatus

2005-07-26

2005-07-26

Walker, Zakiya (Department: 3672)

Wells

With below and above ground modification

With above ground casing sinking means

C166S241600, C166S242300

Reexamination Certificate

active

06920924

ABSTRACT:
A unitary pipe loop component for use with a sinker bar and a pair of pipes in a wellbore includes a return bend pipe fitting having a fluid flow passage configured to extend between the pipes in the wellbore, and further includes a sleeve having a passage with open opposite ends to receive the sinker bar through the sleeve. A weight suspension structure is connected to the sleeve and the pipe fitting as another distinct portion of the unitary pipe loop component, and has a knockout portion configured to provide an eyelet for insertion of a hook, tether, or the like for suspension of a weight. The eyelet may alternatively receive an anchor.

REFERENCES:
patent: 5533356 (1996-07-01), DeMasters
patent: 5590715 (1997-01-01), Amerman
patent: 5639184 (1997-06-01), DeMasters
patent: 5642964 (1997-07-01), DeMasters
patent: 5758724 (1998-06-01), Amerman
patent: 6041862 (2000-03-01), Amerman
patent: 6250371 (2001-06-01), Amerman et al.
patent: 6276438 (2001-08-01), Amerman et al.
patent: 6585036 (2003-07-01), Amerman et al.
patent: 6672371 (2004-01-01), Amerman et al.
Vanguard Piping Systems web page at http://www.vanguardpipe.com/geo.html, printed on three sheets, copyright 2004.
Chevron Phillips Chemical web page at http://www.cpchem.com/docs/PP650.pdf entitled “Performance Pipe”, pp. 1-8, dated Feb. 2002.

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