Compound acidification corrosion inhibitor based on Mannich base and BAA

A technology of acidifying corrosion inhibitor and Mannich base, which is applied in the direction of drilling composition, chemical instruments and methods, wellbore/well parts, etc., can solve the problem that the corrosion inhibitor is difficult to achieve the corrosion inhibition effect, and achieve Improve the quality of acidizing construction, high construction safety and wide application range

Inactive Publication Date: 2018-01-12
CNPC BOHAI DRILLING ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex corrosion environment of oil and gas fields, it is difficult for a single corrosion inhibitor to achieve the expected corrosion inhibition effect. Therefore, it is necessary to study the compounding of corrosion inhibitors to develop efficient and field-adaptable insect inhibitor formulations.

Method used

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  • Compound acidification corrosion inhibitor based on Mannich base and BAA
  • Compound acidification corrosion inhibitor based on Mannich base and BAA
  • Compound acidification corrosion inhibitor based on Mannich base and BAA

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A compound acidification corrosion inhibitor based on Mannich base and BAA, comprising 20 parts by weight of diethylaminomethylphenylacryltriazole Mannich base and 20 parts of 2-benzoyl-3-hydroxyl - 1-propene, 0.5 parts of SDS, 20 parts of methanol, 24 parts of PEG-400, 5.5 parts of dimethylformamide, 5.0 parts of aniline, 4.0 parts of formic acid and 1.0 parts of OP-10.

[0029] When in use, the above-mentioned components are weighed and mixed evenly before being sent to the construction site for use or stored for later use.

Embodiment 2

[0031] A kind of composite acidification corrosion inhibitor based on Mannich base and BAA, including 28 parts by weight of diethylaminomethyl phenyl triazole Mannich base and 25 parts of 2-benzoyl-3-hydroxy - 1-propene, 1.0. parts of SDS, 5 parts of methanol, 26 parts of PEG-400, 2.0 parts of dimethylformamide, 6.0 parts of aniline, 6.0 parts of formic acid and 1.0 parts of OP-10.

[0032] When in use, the above-mentioned components are weighed and mixed evenly before being sent to the construction site for use or stored for later use.

Embodiment 3

[0034] A compound acidification corrosion inhibitor based on Mannich base and BAA, comprising 20 parts by weight of diethylaminomethylphenylacryltriazole Mannich base and 23 parts of 2-benzoyl-3-hydroxyl - 1-propene, 1.5 parts of SDS, 22 parts of methanol, 5 parts of PEG-400, 7.5 parts of dimethylformamide, 9.0 parts of aniline, 10 parts of formic acid and 2.0 parts of OP-10.

[0035] When in use, the above-mentioned components are weighed and mixed evenly before being sent to the construction site for use or stored for later use.

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Abstract

The invention discloses a compound acidification corrosion inhibitor based on Mannich base and BAA (2-Benzoylallyl alcohol). The compound acidification corrosion inhibitor comprises the following components in parts by weight: 20-30 parts of Mannich base, 20-30 parts of BAA, 0.5-1.5 parts of a surfactant, 30-45 parts of a solvent, 2-10 parts of dimethylformamide, 5-9 parts of aniline, 2-10 parts of formic acid and 1-2 parts of an emulsifier. The compound acidification corrosion inhibitor based on Mannich base and BAA satisfies oilfield acidification construction requirements at 60-100 DEG C; the invention provides a corrosion inhibitor formula with stable property, good corrosion inhibition performance, easy site construction and cost advantage; the corrosion inhibitor has characteristicsof good compatibility with acidification additives commonly used on site, good compatibility with commonly used imidazoline corrosion inhibitors and other types of quaternary ammonium salt corrosion inhibitors, probability of mixed use, convenient construction, high safety, no pollution, convenient transportation and storage, low cost and the like.

Description

technical field [0001] The invention relates to the technical field of oil field acidizing construction, in particular to a composite acidizing corrosion inhibitor based on Mannich base and BAA. Background technique [0002] Corrosion is an extremely prominent problem that plagues the development of the oil and gas industry. In a corrosive environment, in order to prevent or slow down metal corrosion, a small amount of substances are added to achieve the purpose of protecting the metal. The added substances are generally called corrosion inhibitors for corrosion protection. Adding corrosion inhibitor to prevent corrosion has become one of the very important anti-corrosion methods due to its quick effect, relatively convenient use, simple addition equipment, and relatively low investment. Therefore, this method is widely used in chemical, mechanical, Sectors such as petroleum, steel, power and transportation. At present, it is widely used in the field of petroleum and petro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/54C09K8/74
Inventor 张朔李洪俊马田力刘德正徐庆祥平恩顺李楠黄其王瑞泓
Owner CNPC BOHAI DRILLING ENG
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