Hydraulic Oil Well Pumping System, and Method for Delivering Gas From a Well

Abstract

A hydraulic oil well pumping system is provided. The system uses a pump to exert hydraulic pressure against a reciprocating lift piston over a wellbore. The lift piston is operatively connected to a rod string and downhole pump for pumping oil from a wellbore. Thus, oil is pumped from the wellbore as the rod string and downhole pump move between upper and lower rod positions. In addition, the system includes at least one compressor cylinder having a compressor piston that reciprocates with the lift piston in order to compress produced gas at the surface. A method for compressing gas while pumping oil from a wellbore using such a system is also provided herein.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of U.S. Ser. No. 61 / 766,664, filed Feb. 19, 2013. That application is entitled “Hydraulic Oil Well Pumping System, and Method for Delivering Gas From a Well,” and is incorporated herein in its entirety by reference.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT[0002]Not applicable.THE NAMES OF THE PARTIES TO A JOINT RESEARCH AGREEMENT[0003]Not applicable.[0004]This section is intended to introduce various aspects of the art, which may be associated with exemplary embodiments of the present disclosure. This discussion is believed to assist in providing a framework to facilitate a better understanding of particular aspects of the present disclosure. Accordingly, it should be understood that this section should be read in this light, and not necessarily as admissions of prior art.BACKGROUND OF THE INVENTION[0005]1. Field of the Invention[0006]The present disclosure relates to the field of ...

AI Technical Summary

Benefits of technology

The patent describes a system for pumping oil from a wellbore using a reciprocing piston and rod string. The system utilizes the energy of gravity to compress the gas produced from the well and move it downstream for treatment, sale, or use as fuel. Additionally, the system includes a directional control valve that shifts between upstroke and downstroke positions to control the flow of hydraulic fluid. The technical effect of this invention is an improved and efficient oil pumping system that can reliably and safely produce oil from wellbores.

Problems solved by technology

This, in turn, raises the connected rod string, causing the pump to undergo an upstroke.

When fluid pressure is released from the cylinder, the rod string is lowered due to gravitational forces, causing the connected downhole pump to undergo a downstroke.

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