Hydraulic pumping unit

Pumps – Motor driven – Fluid motor

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

60413, 60371, 91189R, 91452, 91517, 91518, F04B 910

Patent

active

042682282

ABSTRACT:
A hydraulic pumping unit for vertically actuating a downhole pump including first and second hydraulic piston and cylinder assemblies. The first assembly is connected to the downhole pump and the second assembly is connected to a counterweight. A hydraulic line is connected between the first and second assemblies so that the counterweight counterbalances the downhole pumping equipment. A hydraulic pump is connected to the first and second assemblies through switching means for alternately supplying hydraulic fluid to and from the first and second assemblies. A check valve is provided between the hydraulic pump and the hydraulic line for replenishing the assemblies with fluid. A safety valve is connected between the first assembly and the hydraulic line for preventing the first assembly dropping in the event of a hydraulic line failure. A return valve in parallel with an orifice closes in the event the hydraulic pump stops for preventing free fall of the first assembly. A pressure switch connected to the second assembly insures that hydraulic fluid is supplied into the first cylinder to prevent actuation of the check filling valve on each stroke.

REFERENCES:
patent: 2313405 (1943-03-01), Vickers
patent: 3632234 (1972-01-01), Lake
patent: 3778193 (1973-12-01), Reinert

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Hydraulic pumping unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic pumping unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic pumping unit will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1487454

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.