Oil extraction device and method based on rod track pump

Abstract

The invention discloses an oil extraction device and method based on a sucker-rod track pump, and the device comprises a ground power unit, a well head device unit and an in-well rod pipe pump unit, and is provided with mechanical power by a variable-frequency low-speed motor at the top of a ground double-pipe-column well head device. A sliding rod fixed on a polished rod and a pulley combination are driven to rotate and slide anticlockwise on a 360-degree circular track on the upper portion of the double-tubular-column well mouth device, the circular track and related assemblies are supported on the ground through a four-column support, and when the pulley combination rotates anticlockwise and ascends along the gradually-rising circular track, the pulley combination is driven to rotate and slide anticlockwise. A sliding rod fixed on the pulley combination inevitably drives a polished rod and a linked sucker rod to finally drive an underground pump plunger to lift upwards, and after the pulley combination moves to the highest point of a rail, the pulley combination suddenly drops along with the cliff type change of the rail, so that components associated with the pulley combination are driven to jointly do similar free fall type movement, and the underground pump plunger is driven to move upwards. Gravitational potential energy generated in the movement process serves as working power of a plunger of the underground pump, liquid automatically flowing into the underground pump is squeezed into an oil pipe communicated with the bottom of the pump, and petroleum or gas field water at the bottom of the well is extracted to the ground through the oil pipe connected with a ball type one-way valve in the middle by means of the method in cycles.

Description

technical field [0001] The invention relates to the technical field of oil and natural gas extraction, in particular to an oil extraction device and method based on a rod track pump. Background technique [0002] Oil is the blood of industry. At present, my country's domestic oil exploitation cannot fully meet the needs of the rapid growth of national economic construction. Large quantities of oil are imported every year. Efforts are made to independently exploit oil and gas. The most common and widely used equipment for domestic oil exploitation is the pumping unit. [0003] At present, the oil pumping equipment mainly based on the beam pumping unit mainly has these shortcomings: large volume and high manufacturing cost; high energy consumption and low mechanical efficiency; limited oil production depth due to the weight of the sucker rod itself; rod and tube work coaxially in the same space Risks such as wear and tear are prone to occur. According to relevant literature re...

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Problems solved by technology

[0006] In order to ensure national energy security and fundamentally solve the problem of restricting the development of my country's oil and gas industry in the above-mentioned oil exploitation, high energy consumption and low efficiency affect the recovery rate, the purpose of the present invention is to find out the existing oil pumping performance from the working principle. The root cause of high energy consumption is to completely change the working mode of pumping units widely used at present, and replace the existing oil pumping and drainage gas recovery technology with new ideas and technical methods, so as to achieve high efficiency, low cost, green, low carbon and energy saving Exploiting oil or removing water from gas fields, promoting significant cost reduction and efficiency increase in oil and gas extraction

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