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Corrosion-resistant and high-temperature-resistant anticorrosive powder coating in steel pipeline for oil field water injection well

A technology of oil field water injection and powder coating, which is applied in the direction of powder coating, fireproof coating, epoxy resin coating, etc., can solve the problems of steel pipe corrosion damage, loss of protection, corrosion of anti-corrosion coating, etc., and achieve prolonging service life, smooth surface, Effect of improving surface hardness

Active Publication Date: 2019-09-27
SHENGLI OIL FIELD XINDA PIPE IND TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the water injection well has the characteristics of large water injection, high temperature, and strong medium corrosion, the anti-corrosion coating inside the pipe is prone to foaming and falling off under the conditions of high temperature, corrosion, high-pressure water flow, and rapid pressure changes, losing its protective effect and causing the steel pipe to be corroded Damage, requiring frequent well shutdown operations, has become a difficult problem in oilfield production

Method used

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  • Corrosion-resistant and high-temperature-resistant anticorrosive powder coating in steel pipeline for oil field water injection well

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment discloses a corrosion-resistant and high-temperature-resistant steel pipeline internal anti-corrosion powder coating for oilfield water injection wells, which includes the following components by weight:

[0031] 40 parts of bisphenol A epoxy resin;

[0032] Alicyclic epoxy resin 20 parts (HP-7200H);

[0033] 20 parts of curing agent (Aradur9690, Amanda9887M curing agent publicly sold on the market are adopted in this embodiment);

[0034] 10 parts of feldspar powder;

[0035] 8 parts of barium sulfate;

[0036] 10 parts of mica powder;

[0037] 35 parts of high temperature and corrosion resistant materials;

[0038] 1 part of acrylate copolymer leveling agent (BYK-3950P);

[0039] 1 part of curing accelerator (adopting CUREZOL2MZ-A, CUREZOLC11Z-A publicly available on the market in this embodiment);

[0040] 1 part of defoamer (adopt BYK961 publicly sold on the market in this embodiment);

[0041] 2 parts of wetting agent (wetting agent CF-10 pub...

Embodiment 2

[0047] This embodiment discloses a corrosion-resistant and high-temperature-resistant steel pipeline internal anti-corrosion powder coating for oilfield water injection wells, which includes the following components by weight:

[0048] 50 parts of bisphenol A epoxy resin;

[0049] Alicyclic epoxy resin 25 parts (HP-7200);

[0050] 25 parts of curing agent (adopt DEH90, Amanda969T02 (SD) publicly available on the market in this embodiment);

[0051] 15 parts of feldspar powder;

[0052] 5 parts of barium sulfate;

[0053] 10 parts of mica powder;

[0054] 25 parts of high temperature and corrosion resistant materials;

[0055] 1.2 parts of acrylic ester copolymer leveling agent (adopt BYK-3950P publicly sold on the market in this embodiment);

[0056] 1.5 parts of curing accelerator (adopting CUREZOL2MZ-A, CUREZOLC11Z-A publicly available on the market in this embodiment);

[0057] 1 part of defoamer (adopt BYK961 publicly sold on the market in this embodiment);

[0058]...

Embodiment 3

[0063] This embodiment discloses a corrosion-resistant and high-temperature-resistant steel pipeline internal anti-corrosion powder coating for oilfield water injection wells, which includes the following components by weight:

[0064] 50 parts of bisphenol A epoxy resin;

[0065] Alicyclic epoxy resin 30 parts (NC-7000L);

[0066] 30 parts of curing agent (Amanda9698, DEH85);

[0067] 20 parts of feldspar powder;

[0068] 10 parts of barium sulfate;

[0069] 25 parts of mica powder;

[0070] 45 parts of high temperature and corrosion resistant materials;

[0071] 2.5 parts of acrylate copolymer leveling agent (Lida Chemical LD-606A);

[0072] 2.5 parts of curing accelerator (CUREZOL2PZ, CUREZOL C11Z-A);

[0073] 2 parts of defoamer (BYK961);

[0074] 3 parts of wetting agent (BYK-3950P);

[0075] 3 parts of paint.

[0076]Among them, the high temperature and corrosion resistant material is: a mixture of titanium diboride, titanium nitride and graphene powder, and the...

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Abstract

The invention provides a corrosion-resistant and high-temperature-resistant anticorrosive powder coating in a steel pipeline for an oil field water injection well. The coating is prepared from the following components in parts by weight: 35-60 parts of bisphenol A epoxy resin, 20-35 parts of alicyclic epoxy resin, 20-35 parts of a curing agent, 10-20 parts of feldspar powder, 5-10 parts of barium sulfate, 10-30 parts of mica powder, 20-50 parts of a high-temperature-resistant and corrosion-resistant material, 0.8-3 parts of an acrylate copolymer leveling agent, 0.5-3 parts of a curing accelerator, 0.5-2 parts of an antifoaming agent, and 1-3 parts of a wetting agent. The coating is prepared by adopting non-toxic and harmless raw materials. Main film-forming materials are prepared by adopting the bisphenol A epoxy resin to be matched with the alicyclic epoxy resin; a certain flexibility is achieved while excellent water resistance, heat resistance, and corrosion resistance are achieved.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion technology for oil field water injection well pipes, in particular to a corrosion-resistant and high-temperature resistant steel pipeline internal anti-corrosion powder coating for oil field water injection wells. Background technique [0002] At present, as various domestic oilfields control economic benefits and oil production costs more carefully, they are very concerned about the service life of oilfield water injection well pipes, which has become one of the important factors affecting oil production costs. There are many materials used for anti-corrosion in steel pipelines, but there are few anti-corrosion materials for coating corrosion-resistant and high-temperature steel pipelines. Since the water injection well has the characteristics of large water injection, high temperature, and strong medium corrosion, the anti-corrosion coating inside the pipe is prone to foaming and falling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D163/02C09D7/61C09D5/03
CPCC08L2201/08C08L2203/18C08L2205/025C09D5/038C09D5/18C09D163/00C09D7/61C08L63/00C08K3/28C08K3/14C08K3/38C08K3/042
Inventor 王纲井卫国陶佳栋盖洁敏
Owner SHENGLI OIL FIELD XINDA PIPE IND TECH DEV CO LTD
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