Sucker rod pump with improved ball and seat

Details Sucker rod pump with improved ball and seat Sucker rod pump with improved ball and seat

2007-01-30

2011-11-22

Kramer, Devon C (Department: 3746)

Fluid handling

Line condition change responsive valves

Direct response valves

C137S533110, C137S533150, C417S554000

Reexamination Certificate

active

08061381

ABSTRACT:
There is provided a seat assembly for use in a downhole oil pump ball valve. The assembly includes a seat, a seat rest, and a ball. The seat is used for seating the ball of the ball valve. The seat has an outer wall and a top surface and a curved shoulder surface between the outer wall and the top surface. The seat rest receives the seat, and the seat rest has a curved corner surface so that when the seat is assembled with the seat rest the seat and seat rest are in substantial contact at all points of the curved shoulder surface and the curved corner surface.

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patent: 5507312 (1996-04-01), Dillman
patent: 5593289 (1997-01-01), Tarpley
patent: 5749394 (1998-05-01), Boehmer et al.
patent: 6105610 (2000-08-01), Watkins et al.
patent: 6199636 (2001-03-01), Harrison

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