Oil well anti-blocking process for petroleum mechanical exploitation

A technology for petroleum machinery and oil wells, applied in the field of oil well anti-blocking technology

Inactive Publication Date: 2022-08-02
刘畅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides an oil well anti-blocking process for petroleum mechanical exploitation, which promotes the solution of the problems mentioned in the above background technology

Method used

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  • Oil well anti-blocking process for petroleum mechanical exploitation
  • Oil well anti-blocking process for petroleum mechanical exploitation
  • Oil well anti-blocking process for petroleum mechanical exploitation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] see figure 1 , an oil well anti-blocking process for petroleum mechanical exploitation, comprising the following steps:

[0047] S1. A wax scraper is built into the oil well;

[0048] S2. Insert the drive rod through the wax scraper, and push the wax scraper to go deeper into the oil well. A plurality of scrapers 29 are inclined on the wax scraper through the elastic connecting rod 28, and each scraper 29 is distributed in a circular array with the drive rod as the axis ;

[0049] S3. When the wax scraper reaches the predetermined position, lift the wax scraper upward through the drive rod, and the scraper 29 on the wax scraper cleans the wax on the inner wall of the oil well;

[0050] S4. While lifting the wax scraper upward through the driving rod, rotate the driving rod to make the wax scraper rotate, so as to completely clean the wax on the inner wall of the oil well.

Embodiment 2

[0052] see Figure 2-7 , this embodiment further elaborates on the structure in Embodiment 1. The wax scraper includes a top collar 26 and a bottom collar 30. The top collar 26 and the bottom collar 30 are connected by an elastic link 28, and the elastic connection A scraper 29 is also installed on the rod 28, and the scraper 29 is inclined upward;

[0053] The driving rod passes through the upper ring hole 27 of the top collar 26 and the lower ring hole 31 of the bottom collar 30;

[0054] The drive rod is formed by interconnecting a plurality of modular rod structures. The modular rod structure is elastically installed with a first resistance block 20 for pushing the wax scraper downward, and a second resistance block for lifting the wax scraper upward. block 16, the first interference block 20 and the second interference block 16 are alternately hidden with the interior of the modular rod structure;

[0055] The first resisting block 20 is provided with a first resisting ...

Embodiment 3

[0061] see Figure 2-7 , this embodiment further elaborates on the structural aspects in Embodiment 2. The modular rod structure includes a module outer cylinder 1 and a module inner cylinder 19. Between two adjacent modular rod structures, the two module outer cylinders 1 Connected to each other, the inner cylinders 19 of the two modules are connected to each other;

[0062] In a modular rod structure, the inner module cylinder 19 is slidably installed in the outer module cylinder 1 , and the inner module cylinder 19 is elastically provided with a first interference block 20 and a second interference block 16 . The resisting inclined surface 22 is set obliquely downward, and the second resisting inclined surface 15 on the second resisting block 16 is set obliquely upward;

[0063] The inner cylinder 19 of the module is provided with an upper through hole 21 for accommodating the first resistance block 20, and a lower through hole 17 for accommodating the second resistance bl...

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Abstract

The invention relates to the technical field of petroleum exploitation, and discloses an oil well anti-blocking process for petroleum mechanical exploitation, which comprises the following steps: S1, a paraffin scraper is arranged in an oil well; s2, a driving rod penetrates through the paraffin scraper and pushes the paraffin scraper to go deep into the oil well, a plurality of scrapers are obliquely arranged on the paraffin scraper through elastic connecting rods, and the scrapers are distributed in a circular array mode with the driving rod as the axis; and S3, when the paraffin scraper reaches a preset position, the paraffin scraper is lifted upwards through a driving rod. According to the oil well anti-blocking technology for petroleum mechanical exploitation, the scrapers are assembled through the elastic connecting rods, the elastic connecting rods are of a metal plate structure supported by elastic steel, and the scrapers are obliquely arranged upwards, so that when the scrapers make contact with wax on the inner wall of an oil well, the elastic connecting rods can adaptively deform towards the side close to the driving rod along with downward movement of the scrapers; and the scraper cannot scrape too much wax, so that a large amount of wax is prevented from falling into the oil well.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation, in particular to an oil well anti-blocking process used for petroleum mechanical exploitation. Background technique [0002] Crude oil contains different amounts of paraffin, which is generally in a dissolved state. When crude oil rises from the bottom of the well and flows through the tubing, the temperature and pressure gradually decrease, and the wax gradually precipitates, accumulates, and accumulates on the pipe wall, which is called oil well wax deposition. It reduces the inner diameter of the tubing, affects the production capacity of the well, and in severe cases stops the production of the oil well. [0003] There are two existing methods for removing wax deposits on the pipe wall: one is mechanical wax removal, wax scraper or wax removal drill bit can be used for self-injection or gas lift wells, and a sucker rod wax scraper can be used for pumping wells, and wax removal ...

Claims

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Application Information

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IPC IPC(8): E21B37/02
CPCE21B37/02
Inventor 刘畅
Owner 刘畅
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