Hydraulic pump jack sytem for reciprocating oil well sucker rods

a technology of hydraulic pump and sucker rod, which is applied in the direction of piston pump, positive displacement liquid engine, borehole/well accessories, etc., can solve the problem that the walking beam pumping system cannot run at a slow enough rate, and achieve the effect of more efficient actuation of the bottom hole pump

Inactive Publication Date: 2006-08-03
BROWN T LEON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0014] Another important advantage of the present invention is the provision of a unique system for adjusting the length of the sucker rod string for more efficient actuation of the bottom hole pump.

Problems solved by technology

In many wells, and stripper wells in particular, the walking beam pumping system cannot run at a slow enough rate.

Method used

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  • Hydraulic pump jack sytem for reciprocating oil well sucker rods
  • Hydraulic pump jack sytem for reciprocating oil well sucker rods
  • Hydraulic pump jack sytem for reciprocating oil well sucker rods

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Embodiment Construction

[0020] It is to be understood that the invention that is now to be described is not limited in its application to the details of the construction and arrangement of the parts illustrated in the accompanying drawings. The invention is capable of other embodiments and of being practiced or carried out in a variety of ways. The phraseology and terminology employed herein are for purposes of description and not limitation.

[0021] Elements shown by the drawings are identified by the following numbers:

[0022]10 wellhead

[0023]12 tubing

[0024]14 earth's surface

[0025]16 Tee fitting

[0026]18 top of 16

[0027]20 hydraulic cylinder

[0028]22 top end

[0029]24 bottom end

[0030]26 piston

[0031]28 internal cylinder wall

[0032]30 downward extending piston rod

[0033]32 seal member

[0034]34 closure member

[0035]36 air vent

[0036]38 hydraulic fluid pump

[0037]40 pipe

[0038]42 inlet opening

[0039]44 return pipe

[0040]46 prime mover

[0041]48 battery

[0042]50 hydraulic controls

[0043]52 string of sucker r...

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Abstract

A pumping system for vertical reciprocation of a string of sucker rods within oil well tubing having a positive displacement pump at the bottom thereof, includes a vertically positioned elongated hydraulic cylinder supported above the tubing and in alignment therewith, the cylinder having a vertically displaceable piston therein. A pump rod is affixed to the piston and extends beyond the bottom end of the cylinder. A seal member affixed to the lower end of the cylinder sealably and reciprocally receives the piston rod. A Tee fitting is secured between the tubing and the cylinder bottom end and reciprocally receives the piston rod. A controlled hydraulic power system provides fluid pressure to the cylinder to vertically reciprocate the piston and thereby the piston rod and tubing string to pump crude oil upwardly in the tubing, the crude oil flowing under pressure into the Tee fitting and out through a side opening.

Description

REFERENCE TO PENDING APPLICATIONS [0001] This application is based on Provisional Patent Application 60 / 562,207 filed April 13, 2004 entitled PUMP APPARATUS AND METHOD FOR OIL WELL PRODUCTION.REFERENCE TO MICROFICHE APPENDIX [0002] This application is not referenced in any microfiche appendix. FIELD OF THE INVENTION [0003] This invention relates to a system for reciprocating an oil well pump located in the bottom portion of a string of tubing in which the pump is reciprocated by sucker rods extending from the pump to the earth's surface. BACKGROUND OF THE INVENTION [0004] Oil wells typically vary in depth from a few hundred feet to several thousand feet. In many wells there is insufficient subterranean pressure to force the oil to the earth's surface. For this reason some system must be devised for pumping the crude oil from the producing formation to the earth's surface. The most common system for pumping an oil well is by the installation of a pumping unit at the earth's surface t...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F04B17/00E21B43/00E21B43/12F04B39/00F04B47/00F04B47/02
CPCE21B43/127F04B47/02F04B47/08E21B43/126
Inventor BROWN, T. LEON
Owner BROWN T LEON
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