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Title: Hydraulic well pumping apparatus

Abstract

This patent describes a hydraulic powered well pumping apparatus for operation of a sucker rod well pump in a well borehole, the apparatus comprising: (a) an elongate polished rod having upper and lower ends, the rod being aligned above and adapted to connect to a string of sucker rods in a well borehole therebelow; (b) an adjustably positioned sleeve means aligned above and enclosing a portion of the polished rod and having a shorter length than the polished rod to enable the polished rod to extend above the sleeve means and below the sleeve means for connection to the string of sucker rods in the well borehole; (c) an axially hollow upstanding cylinder slideably receiving the sleeve means therethrough and enclosing a piston therein, the piston being: (1) moved on admitting hydraulic oil to the cylinder, and (2) joined to the sleeve means for moving the sleeve means and thereby moving the polished rod; (d) means for mounting the upstanding cylinder directly aligned with and above a casing at the top of a well adapted to have a sucker rod string positioned therein; (e) means for adjusting the stroke length imparted to the sucker rod string between minimum and maximummore » stroke lengths; and (f) means for adjusting the location of the sleeve means relative to the polished rod to vary the relative length of polished rod below the sleeve means and wherein a portion of the polished rod extends above the sleeve means dependent on the relative respective portions thereof.« less

Inventors:
Publication Date:
OSTI Identifier:
7047519
Patent Number(s):
US 4646517
Assignee:
NOV; NOV-87-050620; EDB-87-070369
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 11 Apr 1983
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; OIL WELLS; ROD PUMPS; HYDRAULIC EQUIPMENT; ALIGNMENT; CYLINDERS; HYDRAULIC FLUIDS; HYDRAULICS; LUBRICATING OILS; POSITIONING; EQUIPMENT; FLUID MECHANICS; FLUIDS; LUBRICANTS; MECHANICS; OILS; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; PETROLEUM PRODUCTS; PUMPS; WELLS; WORKING FLUIDS; 020300* - Petroleum- Drilling & Production

Citation Formats

Wright, C P. Hydraulic well pumping apparatus. United States: N. p., 1987. Web.
Wright, C P. Hydraulic well pumping apparatus. United States.
Wright, C P. 1987. "Hydraulic well pumping apparatus". United States.
@article{osti_7047519,
title = {Hydraulic well pumping apparatus},
author = {Wright, C P},
abstractNote = {This patent describes a hydraulic powered well pumping apparatus for operation of a sucker rod well pump in a well borehole, the apparatus comprising: (a) an elongate polished rod having upper and lower ends, the rod being aligned above and adapted to connect to a string of sucker rods in a well borehole therebelow; (b) an adjustably positioned sleeve means aligned above and enclosing a portion of the polished rod and having a shorter length than the polished rod to enable the polished rod to extend above the sleeve means and below the sleeve means for connection to the string of sucker rods in the well borehole; (c) an axially hollow upstanding cylinder slideably receiving the sleeve means therethrough and enclosing a piston therein, the piston being: (1) moved on admitting hydraulic oil to the cylinder, and (2) joined to the sleeve means for moving the sleeve means and thereby moving the polished rod; (d) means for mounting the upstanding cylinder directly aligned with and above a casing at the top of a well adapted to have a sucker rod string positioned therein; (e) means for adjusting the stroke length imparted to the sucker rod string between minimum and maximum stroke lengths; and (f) means for adjusting the location of the sleeve means relative to the polished rod to vary the relative length of polished rod below the sleeve means and wherein a portion of the polished rod extends above the sleeve means dependent on the relative respective portions thereof.},
doi = {},
url = {https://www.osti.gov/biblio/7047519}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {3}
}