Pumps – Condition responsive control of pump drive motor – Responsive to accumulation of pumped liquid in receiver
Patent
1981-03-19
1984-05-29
Cohan, Alan
Pumps
Condition responsive control of pump drive motor
Responsive to accumulation of pumped liquid in receiver
417360, 417361, F04B 4700
Patent
active
044512090
ABSTRACT:
An apparatus and method for pumping oil or other fluids from the earth is disclosed as using a submersible pump which is suspended in a hole drilled into the earth by means of a flexible cable. Encased in a flexible sheath with the cable are a power cable for the pump and a flexible hose to carry the oil from the pump to the surface of the earth. Control and signal wires may also be encased in the sheath for connection to transducers mounted on the pump. The pump may be easily inserted into or removed from the hole by using a reeling mechanism on the surface of the earth. The pump itself may comprise a submersible motor connected to a rotary to linear motion transducer that causes a pump barrel to reciprocate. The pump barrel moves over a stationary pump plunger, and there are ball check valves in both the barrel and plunger to control the entrance and exit of oil.
REFERENCES:
patent: 2933570 (1960-04-01), Tutthill
patent: 3583677 (1971-06-01), Phillips
patent: 3726610 (1973-04-01), Butterfield
patent: 3907463 (1975-09-01), Eller
patent: 4050858 (1977-09-01), Ewbank
patent: 4201519 (1980-05-01), Niedermeyer
Barrett Patrick J.
Cohan Alan
Hidden Valley Associates, Inc.
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