US2722850A - Power reducer for pumping wells - Google Patents

Power reducer for pumping wells Download PDF

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Publication number
US2722850A
US2722850A US242779A US24277951A US2722850A US 2722850 A US2722850 A US 2722850A US 242779 A US242779 A US 242779A US 24277951 A US24277951 A US 24277951A US 2722850 A US2722850 A US 2722850A
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Prior art keywords
pumping wells
power reducer
auxiliary
weight
balance weight
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US242779A
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Hilry M Tucker
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/28—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
    • F04B47/14—Counterbalancing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H33/00—Gearings based on repeated accumulation and delivery of energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2706/00—Rotary transmissions with mechanical energy accumulation and recovery without means for automatic selfregulation essentially based on spring action or inertia
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2142—Pitmans and connecting rods
    • Y10T74/2154—Counterbalanced
    • Y10T74/2156—Weight type

Definitions

  • An object of the invention is to provide an auxiliary balance weight which is effective during the upstroke of the pump for reducing the power required to raise oil or other liquids to the earths surface.
  • Another object of the invention is to provide an adjustable device of the described character whereby the auxiliary balance weight may be advantageously employed according to the Weight of the column of liquid being raised.
  • the invention contemplates a pump jack construction having an auxiliary balance weight which automatically moves outwardly from the jack fulcrum and on the side thereof opposite the horse head so as to reduce the power required for lifting oil through the well tubing.
  • the referred to shifting of the auxiliary weight may be accomplished by various means, such as rolling, sliding or swinging, as hereinafter described.
  • a feature of my invention has to do with overcoming inertia, particularly at the beginning of the upstroke, where there is a tendency of the traveling valve to stick in the working barrel.
  • the outwardly shiftable auxiliary weight provides for overcoming this additional load on the string of sucker rods.
  • FIG. 1 is a side elevation of a pump jack embodying a preferred form of my invention.
  • Figure 2 is an enlarged plan view of a pivoted arm and roller for moving or shifting the auxiliary balance weight.
  • Figure 3 is an enlarged sectional view taken on line 33 of Figure 1.
  • FIG. 1 The form of the invention shown in Figure 1 includes a base having a pair of spaced parallel vertical supports 11 which comprise a frame assembly.
  • a prime mover 12 is also mounted on the base 10 and includes a rotating crank 13 for actuating a pitman 14 which is pivotally connected with a walking beam 15 on the length thereof opposite the horse head 16.
  • a wire line or cable 17 connects the horse head 16 with a polish rod 18 received within the well casing head 19.
  • the referred to parts 10 through 19, are conventional and are not, therefore, described in detail.
  • the end of walking beam 15 opposite the horse head 16 is provided with a cylindrical extension 20 on which a balance weight 21 is mounted.
  • the weight 21 is slidable on the extension 20 and may be secured in the proper position for balancing the walking beam 15 by means of a set Patented Nov. 8, 1955 screw 22.
  • An upwardly curved arcuate track 23 is secured on the walking beam 15 and the extension 20 for supporting an auxiliary balance 24 which is connected with the upper end of the vertical supports 11 by means of a connecting arm 25.
  • the upper end of the auxiliary weight 24 is provided with vertically extending hangers 26 which pivotally engage a pin 27 extending through a roller bracket 28.
  • the bracket 28 is secured on the extending end of the connecting arm 25 and supports a roller 29 which is grooved to engage the upper surface of the arcuate track 23.
  • the roller 29 is merely for reducing friction, and that the extending end of the arm 25 could be in sliding contact with the track 23.
  • Anti-friction bearings may be employed in the roller 29 for further reducing friction.
  • the end of the connecting arm 25 opposite the roller 29 is provided with spaced openings 30 through one of which a pivot pin 31 is received for relatively extending or retracting the length of said connecting arm.
  • vertically arranged openings 32 are provided in the upper ends of the vertical supports for receiving the pivot pin 31 and vertically adjusting the position of the connecting arm 25.
  • the described adjustment and arrangement has to do with changing the relative location and movement of the auxiliary balance weight 24 during operation of the pump jack, and which adjustment is required according to the load applied to the connecting cable 17
  • the fulcrum or pivot of the walking beam 15 is in the form of trunnions 33 extending from opposite sides thereof and which trunnions are journaled in aligned bearings 34 in the respective vertical supports 11.
  • the form of the invention shown is operated in the manner of a conventional pump jack; and, by means of the weights 21 and 24, the weight of the sucker rods and pump mechanism, not shown, is balanced at the beginning of the down stroke.
  • the balanced position of the assembling is shown by means of dotted lines.
  • the auxiliary balance weight is moved outwardly relative to the pivot 33, thus providing additional leverage for the up stroke.
  • the balance weight 21 and the relative length of the connecting arm 25 are adjusted, both vertically and laterally, to properly balance the load applied to the cable 17.
  • a pump jack for an oil well comprising a frame, a walking beam pivoted between the ends thereof on said frame, a horse head on one end of said walking beam, a counterweight on the end of said beam opposite said horse head, an upwardly curved arcuate track mounted on said beam and on the end thereof including said counterweight, an arm pivotally connected to said frame and having the free end thereof movably supported on said track, and an auxiliary counterweight mounted on said arm.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Description

Nov. 8, 1955 H. M. TUCKER 2,722,850
POWER REDUCER FOR PUMPING WELLS Filed Aug. 20, 1951 H. M.TUCKER IN VEN TOR TTORNEY United States Patent POWER REDUCER FOR PUMPING WELLS Hilry M. Tucker, Fort Worth, Tex.
Application August 20, 1951, Serial No. 242,779
1 Claim. (Cl. 74--590) This invention relates to oil field equipment, and has reference to improvements in pump jacks.
An object of the invention is to provide an auxiliary balance weight which is effective during the upstroke of the pump for reducing the power required to raise oil or other liquids to the earths surface.
Another object of the invention is to provide an adjustable device of the described character whereby the auxiliary balance weight may be advantageously employed according to the Weight of the column of liquid being raised.
Generally, the invention contemplates a pump jack construction having an auxiliary balance weight which automatically moves outwardly from the jack fulcrum and on the side thereof opposite the horse head so as to reduce the power required for lifting oil through the well tubing. In carrying out my invention, the referred to shifting of the auxiliary weight may be accomplished by various means, such as rolling, sliding or swinging, as hereinafter described.
A feature of my invention has to do with overcoming inertia, particularly at the beginning of the upstroke, where there is a tendency of the traveling valve to stick in the working barrel. The outwardly shiftable auxiliary weight provides for overcoming this additional load on the string of sucker rods.
The invention will be more readily understood by reference to the accompanying drawings and the following description.
Figure 1 is a side elevation of a pump jack embodying a preferred form of my invention.
Figure 2 is an enlarged plan view of a pivoted arm and roller for moving or shifting the auxiliary balance weight.
Figure 3 is an enlarged sectional view taken on line 33 of Figure 1.
The form of the invention shown in Figure 1 includes a base having a pair of spaced parallel vertical supports 11 which comprise a frame assembly. A prime mover 12 is also mounted on the base 10 and includes a rotating crank 13 for actuating a pitman 14 which is pivotally connected with a walking beam 15 on the length thereof opposite the horse head 16. A wire line or cable 17 connects the horse head 16 with a polish rod 18 received within the well casing head 19. The referred to parts 10 through 19, are conventional and are not, therefore, described in detail.
The end of walking beam 15 opposite the horse head 16 is provided with a cylindrical extension 20 on which a balance weight 21 is mounted. The weight 21 is slidable on the extension 20 and may be secured in the proper position for balancing the walking beam 15 by means of a set Patented Nov. 8, 1955 screw 22. An upwardly curved arcuate track 23 is secured on the walking beam 15 and the extension 20 for supporting an auxiliary balance 24 which is connected with the upper end of the vertical supports 11 by means of a connecting arm 25. The upper end of the auxiliary weight 24 is provided with vertically extending hangers 26 which pivotally engage a pin 27 extending through a roller bracket 28. The bracket 28 is secured on the extending end of the connecting arm 25 and supports a roller 29 which is grooved to engage the upper surface of the arcuate track 23. To those versed in the art, it will be obvious that the roller 29 is merely for reducing friction, and that the extending end of the arm 25 could be in sliding contact with the track 23. Anti-friction bearings may be employed in the roller 29 for further reducing friction. The end of the connecting arm 25 opposite the roller 29 is provided with spaced openings 30 through one of which a pivot pin 31 is received for relatively extending or retracting the length of said connecting arm. Similarly, vertically arranged openings 32 are provided in the upper ends of the vertical supports for receiving the pivot pin 31 and vertically adjusting the position of the connecting arm 25. The described adjustment and arrangement has to do with changing the relative location and movement of the auxiliary balance weight 24 during operation of the pump jack, and which adjustment is required according to the load applied to the connecting cable 17 The fulcrum or pivot of the walking beam 15 is in the form of trunnions 33 extending from opposite sides thereof and which trunnions are journaled in aligned bearings 34 in the respective vertical supports 11.
The form of the invention shown is operated in the manner of a conventional pump jack; and, by means of the weights 21 and 24, the weight of the sucker rods and pump mechanism, not shown, is balanced at the beginning of the down stroke. The balanced position of the assembling is shown by means of dotted lines. As the down stroke takes place, the auxiliary balance weight is moved outwardly relative to the pivot 33, thus providing additional leverage for the up stroke. In practice, the balance weight 21 and the relative length of the connecting arm 25 are adjusted, both vertically and laterally, to properly balance the load applied to the cable 17.
The invention is not limited to the specific constructions herein shown and described, but may be made in many ways within the scope of the appended claim.
What is claimed is:
In a pump jack for an oil well comprising a frame, a walking beam pivoted between the ends thereof on said frame, a horse head on one end of said walking beam, a counterweight on the end of said beam opposite said horse head, an upwardly curved arcuate track mounted on said beam and on the end thereof including said counterweight, an arm pivotally connected to said frame and having the free end thereof movably supported on said track, and an auxiliary counterweight mounted on said arm.
References Cited in the file of this patent UNITED STATES PATENTS 527,929 Bentrup Oct. 23, 1894 1,309,842 Dayton July 15, 1919 2,175,588 Athy Oct. 10, 1939 2,198,348 Porter Apr. 23, 1940 2,342,216 Perkins et a1. Feb. 22, 1944
US242779A 1951-08-20 1951-08-20 Power reducer for pumping wells Expired - Lifetime US2722850A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2841992A (en) * 1954-09-13 1958-07-08 Chastain Joe Counterbalance means for unequal reciprocating loads
US3153387A (en) * 1963-03-14 1964-10-20 E V A G Soc Di Responsabilidad Pumping unit
US4377092A (en) * 1980-07-14 1983-03-22 Pioneer Electric Supply Co., Inc. Well pump jack with controlled counterbalancing
US20090206230A1 (en) * 2008-02-15 2009-08-20 Gerard Dauvin Method and System for Repositioning a Pump Jack

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US527929A (en) * 1894-10-23 Drilling-machine
US1309842A (en) * 1919-07-15 William l
US2175588A (en) * 1936-11-09 1939-10-10 Int Stacey Corp Walking beam counterbalance
US2198348A (en) * 1938-04-06 1940-04-23 J F Darby Counterbalance
US2342216A (en) * 1941-03-17 1944-02-22 Palmer Bee Co Multiple frequency-variable phase counterbalancing device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US527929A (en) * 1894-10-23 Drilling-machine
US1309842A (en) * 1919-07-15 William l
US2175588A (en) * 1936-11-09 1939-10-10 Int Stacey Corp Walking beam counterbalance
US2198348A (en) * 1938-04-06 1940-04-23 J F Darby Counterbalance
US2342216A (en) * 1941-03-17 1944-02-22 Palmer Bee Co Multiple frequency-variable phase counterbalancing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2841992A (en) * 1954-09-13 1958-07-08 Chastain Joe Counterbalance means for unequal reciprocating loads
US3153387A (en) * 1963-03-14 1964-10-20 E V A G Soc Di Responsabilidad Pumping unit
US4377092A (en) * 1980-07-14 1983-03-22 Pioneer Electric Supply Co., Inc. Well pump jack with controlled counterbalancing
US20090206230A1 (en) * 2008-02-15 2009-08-20 Gerard Dauvin Method and System for Repositioning a Pump Jack

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