An electric pump assembly for oil production in the same well pumping and injection process

Abstract

The invention discloses an electric oil production pump assembly for a same-well pumping and injection process. The electric oil production pump assembly comprises an electric oil production pump combination joint, an outer sealing pipe, a lower joint, a semicircular clamp ring, an oil production pump joint and a toothed embedded hanging ring. The upper end of the electric oil production pump combination joint is positioned on the outside of the outer sealing pipe, the lower end of the electric oil production pump combination joint extends into the outer sealing pipe, a through hole is formed in the electric oil production pump combination joint, and the through hole, an oil pipe in the outer sealing pipe and the lower joint jointly form an oil pipe passage; the electric oil production pump combination joint, the semicircular clamp ring and the oil production pump joint form an electric oil production pump suspension device, the semicircular clamp ring is sleeved on the outside of the electric oil production pump combination joint, and the oil production pump joint is arranged below the semicircular clamp ring and is connected with the electric oil production pump combination joint. The electric oil production pump assembly has the advantages that the oil production capacity of electric pumps can be realized to the greatest extent, and the shortcoming of limited oil production capacity of existing electric pumps is overcome.

Description

technical field [0001] The invention relates to a matching tool for the same well pumping and injection process in the fields of petroleum and natural gas exploitation, and in particular to an oil production electric pump assembly for the same well pumping and injection process. Background technique [0002] At present, after most oil wells are put into production, with the prolongation of production time and the further development of oil fields, especially after the oil fields enter the middle and later stages of production, in order to increase crude oil production, various oil fields generally adopt water injection strong flooding technology, which leads to oil wells containing The water volume increases year by year, and the cost of extraction is getting higher and higher, which eventually leads to the oil well soon entering the non-profit production stage and being forced to stop production, so that a considerable proportion of the original oil reserves remain in the re...

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Problems solved by technology

[0006] In the prior art, in the supporting tools of the same well pumping and injection process, it is often impossible to put a large-sized electric pump into the tubing, which greatly limits the oil production capacity of the electric pump

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