Auxiliary pumping device for oil extraction

Abstract

The invention discloses an auxiliary pumping device for oil extraction. The device comprises three sections of pipe bodies. The first section of pipe body is an oil inlet pipe (1), with its pipe wall being provided with a plurality of oil inlet holes (12); the second section of pipe body is an oil conducting pipe (2); and the third section of pipe body is an oil outlet pipe (3); a plurality of cross sections inside the second and the third sections of pipe bodies is respectively provided with meshes. The three sections of pipe bodies are sequentially connected by screw threads. The three sections of pipe bodies and the meshes are all made of J55 or N80 steels. With the auxiliary pumping device for the oil extraction, the formation of wax blockage and scale blockage on an oil-well pump, a sucker rod and an oil-well tube wall can be reduced. The auxiliary is applicable to the production of a conventional oil-water well, and is also applicable to waxing prevention, anti-corrosion and anti-scaling of a ground pipeline of a concentrated oil-gas-water transmission station, accordingly preventing and treating the waxing and scaling of the oil-water well, thereby saving plenty of working time and cost.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploitation, and in particular relates to a pumping aid device for petroleum exploitation. Background technique [0002] In the process of oilfield oil recovery and development, the water-bearing crude oil in the wellbore has undergone great changes in temperature and pressure compared with the three phases of oil, gas and water in the formation, which makes the paraffin, colloid, asphaltene, calcium, magnesium, barium and strontium in the oil and water components Sulphate and carbonate are easily precipitated and condensed on the wall of the oil pump, sucker rod, and oil pipe, causing wax sticking and scale sticking, which makes the production impossible. In addition, it is used for liquid supply in the later stage of development of low-pressure and low-permeability reservoirs. Insufficiency is a common phenomenon. To solve this problem, the usual method is to: [0003] 1. Check the pump in ...

AI Technical Summary

Problems solved by technology

[0004] 2. Frequent hot washing of oil wells

[0008] (1) Workover is labor-intensive, takes up a long production time, and costs high

[0009] (2) The cost of well washing is high, the bottom of the oil well is easily damaged by well washing, and the recovery of production is slow

[0010] (3) Wax scraping, pipe scraping, etc. have high labor intensity, high operating cost, and there is a hidden danger of falling objects in the well

[0011] (4) Pickling has a corrosive effect on oil and carbon steel pipeline wells, affecting the effective economic life of oil wells

[0012] (5) There is a low-pressure area at the inlet of the oil well pump, which causes an unstable state of the liquid supply at the inlet of the oil well pump

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