Pumps – Expansible chamber type – Pressure responsive distributor opened responsive to pumping...
Patent
1990-11-30
1992-08-25
Bertsch, Richard A.
Pumps
Expansible chamber type
Pressure responsive distributor opened responsive to pumping...
417444, 417450, 417430, F04B 700
Patent
active
051414112
ABSTRACT:
A fluid pump which is particularly useful in relatively deep and/or low pressure stripper wells. Stripper wells tend to produce sporadically and/or occasionally produce gas, and are often very sandy, have a tendency to become gas locked, and are susceptible to sticking and sanding. Fluid is displaced out of the pump into the production tubing through exit ports located immediately above the hold-down, e.g., at a point intermediate the ends of the barrel of the pump. The pump includes a traveling valve and a standing valve, the traveling valve being provided with a valve member which includes a downwardly extending stem which terminates in a lower bearing surface, and the standing valve being provided with a valve member having an upper bearing surface. As the plunger of the pump is reciprocated, the lower bearing surface of the valve member of the traveling valve mounted therein contacts the upper bearing surface of the valve member of the standing valve when the plunger is near the maximum extent of downward travel to force the traveling valve open and/or force the standing valve closed depending upon fluid pressure conditions and whether the standing valve is stuck open. Likewise, the pump avoids the sticking and sanding problems caused by such wells by routing fluid through the annulus between plunger and barrel and out the exit ports to flush particulate matter with each stroke of the plunger.
REFERENCES:
patent: 1665967 (1928-04-01), LeBus
patent: 1900588 (1933-03-01), Scott
patent: 3055764 (1962-09-01), Pryor et al.
patent: 3510234 (1970-05-01), Wolf
patent: 3822970 (1974-07-01), Smith et al.
Bertsch Richard A.
Freay Charles G.
LandOfFree
Center-anchored, rod actuated pump does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Center-anchored, rod actuated pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Center-anchored, rod actuated pump will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-381239