Production pump for high gravity or sand laden oil

Details Production pump for high gravity or sand laden oil Production pump for high gravity or sand laden oil

1989-05-22

1990-05-01

Smith, Leonard E.

Pumps

Expansible chamber type

Valved piston

417554, F16K 2110, F04B 4712

Patent

active

049214071

ABSTRACT:
A plunger type pump for use with heavy oil or oil mixed with sand is set forth. It incorporates bottom and top cylinders which are joined at a central bushing. A standing check valve in a polished tube enlargement at the top end cooperates with a bottom check valve in the bottom cylinder. A safety joint on the sucker rod string is included for easy connection. Another feature is a top end sleeve connected with a pin and J-slot arrangement held to a surrounding sleeve. Two sleeves are separated by breaking shear pins axial movement, rotation in a particular direction and additional axial movement to accomplish J-slot disengagement.

REFERENCES:
patent: 2327503 (1943-08-01), Coberly
patent: 2420151 (1947-05-01), Renouf et al.

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