Anti-scaling and anti-sand device connected with oil pumping tubing string into whole and application method

Abstract

The invention relates to an anti-scaling and anti-sand device connected with an oil pumping tubing string into a whole and an application method. The device comprises an oil well tubing, an oil well pump, a gas anchor and an end cap, wherein the oil well tubing is connected with the anti-scaling and anti-sand device, the anti-scaling and anti-sand device is connected with a tubing pup joint, the tubing pup joint is connected with the oil well pump, an outer tube of the oil well pump is connected with the gas anchor, the outer tube of the gas anchor is connected with the end cap, an upper joint of the anti-scaling and anti-sand device is connected with the oil well tubing through a tube ferrule, the upper joint is connected with an annular anti-scaling cover, a central tube is inserted in the middle of the annular anti-scaling cover, the outer diameter of the central tube is connected with the inner wall of the annular anti-scaling cover through a centering ring, and the bottom part of the annular anti-scaling cover is connected with a trumpet-shaped lower joint. The device has simple structure and low cost, an annular sand setting space is formed between the inner wall and the outer wall of the anti-scaling and anti-sand device, liquid flow is discharged from inner tubes to the outer tubes, and scales, sand and impurities settled from liquid are retained in the anti-scaling and anti-sand annular space, thereby preventing the pump from being locked during the pump-setting process and the production process of an oil well, effectively prolonging the pump detection period of the oil well and improving the oil production efficiency.

Description

technical field [0001] The invention relates to oil exploitation, in particular to an anti-scaling and anti-sand device integrated with an oil pumping string and an application method. Background technique [0002] In the existing oil production and exploitation, due to the collision between the sucker rod and the oil pipe, the oil pipe and the casing during the pumping or production process, a large amount of scale or other impurities will be deposited in the piston of the oil well pump and the fixed valve and the casing. At the moving valve, there is a floating valve or a fixed valve that fails or is stuck, and the piston and the pump barrel are stuck. At the same time, during the production and suction of sand producing oil wells, dirt such as sand particles are brought into the pump barrel, resulting in defects such as pump jams. Contents of the invention [0003] The object of the present invention is to provide a kind of anti-scaling and anti-sand device which is co...

AI Technical Summary

Problems solved by technology

[0002] In the existing oil production and exploitation, due to the collision between the sucker rod and the oil pipe, the oil pipe and the casing during the pumping or production process, a large amount of scale or other impurities will be deposited in the piston of the oil well pump and the fixed valve and the casing. At the moving valve, there is a floating valve or a fixed valve that fails or is stuck, and the piston and pump barrel are stuck

At the same time, during the production and suction process of sand producing oil wells, sand particles and other dirt are brought into the pump barrel, resulting in defects such as pump jamming

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