Repairing agent and repairing method

A repair method and technology of repair agent, applied in coating, metal material coating process, etc., can solve problems such as time-consuming, increased oil production cost, and reduced oil well output, and achieve the effect of convenient operation and low cost

Inactive Publication Date: 2019-06-04
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The operation of replacing a new polished rod is cumbersome and time-consuming, which reduces the production of the oil well, and the cost of replacing a new polished rod is high, which increases the cost of oil production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The embodiment of the present invention provides a repair method, comprising the following steps:

[0044] Mix the powder and metal glue according to the volume ratio of 1:1.5 to obtain the restoration agent;

[0045] Apply the repair agent to the defect of the polished rod and let it stand for 1 to 3 minutes;

[0046] Wherein, the powder includes the following components by mass fraction: 0.36% elemental carbon, 0.25% elemental silicon, 1.27% elemental manganese, 0.004% elemental vanadium, 0.05% elemental boron and 98.066% elemental iron.

[0047] The results showed that the restoration agent was too thick and the metal glue was too little, which made the restoration agent not easy to adhere to the polished rod, and easy to fall off from the polished rod.

Embodiment 2

[0049] The embodiment of the present invention provides a repair method, comprising the following steps:

[0050] Mix the powder and metal glue according to the volume ratio of 1:2.5 to obtain the restoration agent;

[0051] Apply the repair agent to the defect of the polished rod and let it stand for 1 to 3 minutes;

[0052] Wherein, the powder includes the following components by mass fraction: 0.36% elemental carbon, 0.25% elemental silicon, 1.27% elemental manganese, 0.004% elemental vanadium, 0.05% elemental boron and 98.066% elemental iron.

[0053] The results showed that the restorative was too thin to adhere to the polished rod.

Embodiment 3

[0055] The embodiment of the present invention provides a repair method, comprising the following steps:

[0056] Mix the powder and metal glue according to the volume ratio of 1:2 to obtain the restoration agent;

[0057] Apply the repair agent to the defect of the polished rod and let it stand for 1 to 3 minutes;

[0058] Use a grinding tool to grind the defect where the repair agent is applied, so that the outer diameters of the polished rods after repair are equal.

[0059] Wherein, the powder includes the following components by mass fraction: 0.36% elemental carbon, 0.25% elemental silicon, 1.27% elemental manganese, 0.004% elemental vanadium, 0.05% elemental boron and 98.066% elemental iron.

[0060] The results show that the viscosity of the repair agent is just right, it is easier to adhere to the polished rod, and the repaired part has better wear resistance than the unworn part of the polished rod.

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PUM

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Abstract

The invention provides a repairing agent and a repairing method. The repairing agent is prepared from powder and metal glue, wherein the volume ratio of the powder to the metal glue is 1 to 1 - 1 to 2.5; and the powder is prepared from the following components in percentage by mass: 0.32%-0.39% of elemental carbon, 0.20%-0.30% of elemental silicon, 1.23%-1.33% of elemental manganese, 0.001%-0.007%of elemental vanadium, 0.045%-0.055% of elemental boron and 97.918%-98.204% of elemental iron. According to the repairing agent and the repairing method, an unthreaded rod can be repaired rapidly.

Description

technical field [0001] The invention relates to the technical field of oilfield machinery, in particular to a repairing agent and a repairing method. Background technique [0002] The polished rod of the pumping unit is an important component for the connection of the pumping unit to the deep well pump. After the pumping unit has been in operation for a period of time, the pumping unit is worn out, and defects such as grooves and peeling appear on the surface. If it continues to be used, it will cause the problem of oil leakage from the wellhead, and also seriously pollute the environment. [0003] At present, when the polished rod of the pumping unit is defective, it is replaced with a new polished rod. [0004] In the process of realizing the present invention, the inventor has found that there are at least the following problems in the prior art: [0005] The operation of replacing a new polished rod is cumbersome and time-consuming, which reduces the output of the oil ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C23C24/00B22F1/00C22C38/02C22C38/04C22C38/12
Inventor刘美红张育毛艳玲付起孙玉文
OwnerPETROCHINA CO LTD