Pumping unit of oil well

A technology for oil pumping and oil wells, which is applied in the field of exploitation of various oil reservoirs, can solve the problems of large energy loss, small application range, and large investment, and achieve the goal of improving production degree and oil recovery speed, reducing labor intensity, and simplifying process procedures Effect

Inactive Publication Date: 2002-03-06
王身强 +1
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  • Abstract
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Problems solved by technology

The problem of this technology is that the heating method is unreasonable, the energy loss is large, the heating area of ​​the crude oil in the oil pipe is small, and only the oil around the electric heating rod is heated, which cannot effectively solve the problem of oil condensation. In addition, since the electric heater is powered by the ground power supply, Make the wire and easy to be damaged so that the equipment can not work
Steam huff and puff oil recovery technology requires a large investment due to complex equipment and a small scope of application. It can only be used in oil layers with a thickness of more than 3.5 meters and a water content of less than 10%.
[0004] The above oil recovery technology has not been widely used so far due to the above problems, and the application ratio in actual production operations is quite small

Method used

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  • Pumping unit of oil well
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Embodiment Construction

[0018] The various parts that make up the present invention: including harmonic transmission, downhole generator, downhole heater and oil well pump itself are all prior art, in the implementation process, they are positioned at the lower part of the oil pipe in the oil well casing, submerged in the incoming fluid of the oil reservoir. Among them, the harmonic transmission structures commonly seen on the market include inner and outer ring gears, movable ring gears and guides, wherein the inner ring gear is fixed on the driving shaft of the guider, the outer ring gear is fixed on the driven shaft, and the movable ring gear Located in the middle of the inner and outer ring gears, when the modules of the outer teeth and the inner teeth of the movable ring gear are different, the modules of the outer ring gear and the inner gear are also different, and the speed ratio is also different. Modulus change achieves the purpose of speed change. At present, the transmission ratio of dome...

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Abstract

A pumping unit of oil well, which is aimed at integrating such functions as recovering oil, pumping oil upward, and generating electricity for electrically heating oil, effectively reducing the viscosity of crude oil and preventing coagulation of crude oil, is composed of sucker rod rotating under the drive of ground power, harmonic speed variator driven by said sucker rod, oil-well pump driven by said harmonic speed variator, underground electric generator driven by harmonic speed variator, and underground electric heater connected with said electric generator.

Description

technical field [0001] The invention relates to an oil recovery device for an oil field. Specifically, it is a combined device that integrates oil field exploitation, oil well pumping, variable speed power generation and heating. It is especially suitable for the exploitation of various oil reservoirs such as heavy oil, high pour point oil and thin oil. Background technique [0002] In the process of oil well exploitation, mechanical oil recovery is one of the important means for oilfields to achieve high and stable production. At present, the most common mechanical oil recovery techniques in oilfield exploitation are rod pumps and rodless pumps. Rod pumps are divided into tube pumps, rod pumps pumps, screw pumps, and rodless pumps include electric submersible pumps and hydraulic piston pumps. Since the above-mentioned mechanical oil recovery technology is applied to the development of oil fields, it has poor adaptability to heavy oil and high pour point oil, so that some ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B36/04E21B43/00
Inventor 王身强赵芳忠彭富臣
Owner 王身强
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