Rotating stuffing box with split standpipe

Wells – Processes – Disassembling well part

Reexamination Certificate

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Details

C166S084100, C166S068500

Reexamination Certificate

active

07337851

ABSTRACT:
A system comprising a top mounted rotating stuffing box is provided for use with downhole pump (e.g., Progressing Cavity Pump) applications. The system also includes a split standpipe configuration that allows the stuffing box to be quickly installed or removed as needed. The split standpipe feature combined with the top-mounted aspect of the stuffing box allow for the corresponding drive units to stay intact while the stuffing box is being installed or removed.

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patent: 6557643 (2003-05-01), Hall et al.
patent: 2001/0050168 (2001-12-01), Hult
patent: 2006/0032635 (2006-02-01), Rivard
patent: 2311036 (2001-09-01), None
patent: 2 397 360 (2004-02-01), None
patent: 2 436 924 (2004-02-01), None
patent: WO 2004/092538 (2004-10-01), None
U.K. Search Report, Patent Application No. GB0518029.4, dated Dec. 1, 2005.
CA Office Action, Application No. 2,517,801, Dated Feb. 19, 2007.

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