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Corrosion and scale inhibitor for oil and gas fields and petrochemical industry

A scale and corrosion inhibitor, oil and gas field technology, applied in scale removal and water softening, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve aggravated metal corrosion, putrefaction, and unsatisfactory scale inhibition effect of oily sewage and other issues to achieve good sterilization performance

Active Publication Date: 2014-05-28
SHANDONG TAIHE WATER TREATMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The anti-scaling effect of oily sewage in oil and gas fields and petrochemical industries is not ideal
Crude oil contains more inorganic salt minerals and metal ions such as calcium and magnesium. Silica or silicate forms calcium silicate scale. Some metal ions are easy to aggravate the corrosion of metals, and contain a large number of bacteria and microorganisms that are easy to cause rancidity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A scale and corrosion inhibitor used in oil and gas fields and petrochemical industries, including the specific ratio of each component:

[0021] Aminotrimethylenephosphonic acid 30%

[0022] Maleic acid-acryloylmorpholine 35%

[0023] Polyepoxysuccinic Acid 25%

[0024] Alkylphenol Ethoxylates (OP-7) Acrylates - Acrylic 10%.

Embodiment 2

[0026] A scale and corrosion inhibitor used in oil and gas fields and petrochemical industries, including the specific ratio of each component:

[0027] Ethylenediaminetetramethylenephosphonic acid 35%

[0028] Maleic acid-acryloylmorpholine 30%

[0029] Polyepoxysuccinic Acid 30%

[0030] Alkylphenol Ethoxylates (OP-9) Acrylates - Acrylic 5%.

Embodiment 3

[0032] A scale and corrosion inhibitor used in oil and gas fields and petrochemical industries, including the specific ratio of each component:

[0033] Hydroxyethylene diphosphonic acid 18%

[0034] 2-Hydroxyphosphonoacetic acid 20%

[0035] Maleic acid-acryloylmorpholine 15%

[0036] Polyepoxysuccinic Acid 32%

[0037] Alkylphenol Ethoxylates (OP-9) Acrylates - Acrylic 15%.

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PUM

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Abstract

The invention relates to a corrosion and scale inhibitor for oil and gas fields and petrochemical industry, which is mainly used to inhibit scales and corrosion of oily water and effectively prevents generation of biological slimes of bacteria and algae in crude oil transportation pipelines and circulating cooling water systems in the petrochemical industry. The corrosion and scale inhibitor for oil and gas fields and petrochemical industry comprises at least one of maleic acid-acryloyl morpholine, polyepoxysuccinic acid, alkylphenol polyoxyethylenyl ether acrylate-acrylic acid, hydroxyl ethylidene diphosphonic acid, amino trimethylene phosphonic acid, ethylenediamine tetramethylenephosphonic acid, divinyl triamine pentamethylene phosphonic acid, 2-butane phosphonate-1, 2, 4-tricarboxylic acid and the like.

Description

technical field [0001] The invention belongs to the field of water treatment chemicals, in particular to a scale and corrosion inhibitor used in oil and gas fields and petrochemical industries. Background technique [0002] In the late stage of oilfield development, a large amount of corrosive media such as dissolved oxygen, carbon dioxide, and sulfide will be produced. These substances will dissolve in the underground production water to form a weak acid system, which will cause serious corrosion to the downhole pipeline of the water injection system and shorten the service life of the pipeline. In addition, in the circulating cooling water system of petroleum refineries, material leakage occurs due to problems with cooling equipment and pipelines. If oily substances exist in the circulating water for a long time, it is very easy to cause bacteria and algae to multiply and a large number of biological slimes to grow. Attached to the surface of the equipment, it not only aff...

Claims

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Application Information

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IPC IPC(8): C02F5/14C02F5/10
Inventor 刘强王东宇闫鹏李鹏飞张秀华
Owner SHANDONG TAIHE WATER TREATMENT TECH CO LTD
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