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Corrosion inhibitor for oil-gas gathering and transportation pipeline and preparation method thereof

A technology of oil and gas gathering and transportation and corrosion inhibitor, which is applied in the field of oil and gas gathering and transportation pipeline corrosion inhibitor and its preparation, which can solve the problems of no corrosion inhibitor and achieve the effects of anti-corrosion, easy material acquisition and good application prospects

Inactive Publication Date: 2014-06-25
马杨洋 +9
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Oilfield corrosion has the following characteristics: gas, water, hydrocarbon, and solid coexistence multiphase flow corrosion medium, both general corrosion and localized corrosion, including carbon dioxide gas and acid liquid corrosion, hydrogen sulfide corrosion, stress corrosion cracking and Microbial corrosion, etc., currently there is no effective corrosion inhibitor for the corrosion formed by hydrogen sulfide and its acid solution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The gas gathering and transportation pipeline corrosion inhibitor of the present invention comprises 2 parts of polyacrylic acid, 4 parts of surfactants, 6 parts of sodium gluconate, 4 parts of mercaptobenzotriazole, 14 parts of potassium carbonate, and 27 parts of diisopropanol Amine, 13 parts carrier nitrogen-doped mesoporous carbon, 16 parts barium petroleum sulfonate, 2 parts liquid wax, and 12 parts distilled water.

[0025] Weigh 14 parts of potassium carbonate solution and 13 parts of nitrogen-doped mesoporous carbon in proportion, mix and stir evenly at room temperature, and the stirring speed is 100~200r / min; add 2 parts of polyacrylic acid to the mixed solution in step 1) , 4 parts of surfactant, 6 parts of sodium gluconate, 4 parts of mercaptobenzotriazole and 27 parts of diisopropanolamine to achieve pre-polymerization at a temperature of 80 ° C ~ 110 ° C; the pre-polymerization prepared in step 2) Add 16 parts of barium petroleum sulfonate and 2 parts of li...

Embodiment 2

[0027] The gas gathering and transportation pipeline corrosion inhibitor of the present invention comprises 1 part of polyacrylic acid, 5 parts of surfactants, 5 parts of sodium gluconate, 5 parts of benzotriazole, 12 parts of potassium carbonate, 25 parts of ethylene glycol amine, 13 parts Parts carrier nitrogen-doped mesoporous carbon, 20 parts barium petroleum sulfonate, 2 parts liquid wax, and 12 parts distilled water.

[0028] Weigh 12 parts of potassium carbonate solution and 13 parts of nitrogen-doped mesoporous carbon in proportion, mix and stir evenly at room temperature, and the stirring speed is 100~200r / min; add 1 part of polyacrylic acid to the mixed solution in step 1) , 5 parts of surfactant, 5 parts of sodium gluconate, 5 parts of benzotriazole and 25 parts of ethylene glycol amine are pre-polymerized at a temperature of 80 ° C ~ 110 ° C; in the pre-polymer prepared in step 2) Add 20 parts of barium petroleum sulfonate and 2 parts of liquid wax, fully mix an...

Embodiment 3

[0030] The gas gathering and transportation pipeline corrosion inhibitor of the present invention comprises 3 parts of polyacrylic acid, 3 parts of surfactant, 5 parts of sodium gluconate, 4 parts of benzotriazole, 10 parts of sodium carbonate, 24 parts of monoethanolamine, and 13 parts of carrier Nitrogen-doped mesoporous carbon, 20 parts barium petroleum sulfonate, 3 parts liquid wax, and 15 parts distilled water.

[0031] Weigh 10 parts of sodium carbonate solution and 13 parts of nitrogen-doped mesoporous carbon in proportion, mix and stir evenly at room temperature, and the stirring speed is 100~200r / min; add 3 parts of polyacrylic acid to the mixed solution in step 1) , 3 parts of surfactant, 5 parts of sodium gluconate, 4 parts of benzotriazole and 24 parts of monoethanolamine are pre-polymerized at a temperature of 80 ° C ~ 110 ° C; add 20 1 part of barium petroleum sulfonate and 3 parts of liquid wax, fully mixed and stirred evenly at a speed of 200~400r / min, stirred ...

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Abstract

The invention discloses a corrosion inhibitor for an oil-gas gathering and transportation pipeline and a preparation method thereof. The corrosion inhibitor comprises the following components in parts by weight: 1-3 parts of polyacrylic acid, 2-10 parts of surface active agent, 5-8 parts of gluconic acid sodium salt, 1-5 parts of aromatic azole, 5-20 parts of carbonate, 20-40 parts of organic amine, 10-30 parts of carrier, 10-30 parts of barium mahogany sulfonate, 1-3 parts of liquid wax and 10-20 parts of distilled water. The corrosion inhibitor is used for inhibiting acidic erosion existing in liquid or natural gas oil field pipelines, especially the erosion caused by sulfureted hydrogen; an alkalescent liquid is formed by adding carbonate and a carrier to guarantee the absorption to acids; the addition of gluconic acid sodium salt in the components realizes the absorption of metal ions such as iron ions, aluminum ions, calcium ions and the like in the exploitation of petroleum pipelines by forming complexes of the ions, thereby avoiding electrochemical corrosion; moreover, no special equipment is needed during operation according to the preparation method, the materials are easily obtained, and the corrosion inhibitor has a good application prospect.

Description

technical field [0001] The invention relates to a corrosion inhibitor, in particular to a corrosion inhibitor for oil and gas gathering and transportation pipelines and a preparation method thereof. Background technique [0002] The service conditions of oilfield equipment are mainly bearing and environment. Under harsh environmental conditions, corrosion becomes one of the main forms of damage. Corrosion is one of the problems that plague the development of the oil and gas industry. Corrosion has greatly shortened the service life of oilfield equipment and gathering and transportation pipelines. According to rough estimates, the losses caused by corrosion to my country's petroleum industry account for about 6% of the total output value of the industry, and taking appropriate anti-corrosion measures can restore at least 30%~40% Loss. Although some special corrosion-resistant materials have been developed, they cannot achieve comprehensive anti-corrosion for complex oil fiel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/04
Inventor 马杨洋于宏庆杨莲育吴林恩张雪明赵宇立许承阳李海鹏柴新陈飞
Owner 马杨洋
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