Unlock instant, AI-driven research and patent intelligence for your innovation.

Corrosion inhibitor for offshore oilfield water treatment system and preparation method thereof

A water treatment system and offshore oilfield technology, applied in earthwork drilling and production, wellbore/well components, etc., can solve the problems of low corrosion inhibition efficiency, large amount of formula used, and large side effects, and achieve high corrosion inhibition rate, simple formula, Effect with few side effects

Active Publication Date: 2017-11-17
E TECH ENERGY TECH DEV CORP
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the commonly used corrosion inhibitors generally have the disadvantages of large dosage, low corrosion inhibition efficiency, and large side effects.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Corrosion inhibitor for offshore oilfield water treatment system and preparation method thereof
  • Corrosion inhibitor for offshore oilfield water treatment system and preparation method thereof
  • Corrosion inhibitor for offshore oilfield water treatment system and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] The preparation method of corrosion inhibitor for offshore oilfield water treatment system of the present invention comprises the following steps: dissolving sodium phosphate and naphthenic acid imidazoline completely with hot water respectively, putting the above-mentioned aqueous solution into a reaction kettle, and heating up to 90- 100°C, make sodium phosphate and naphthenic acid imidazoline undergo condensation reaction, the reaction time is 3 hours; after the reaction product is refluxed to separate the water, continue to add glutaraldehyde, 2-hydroxyphosphonoacetic acid and methyl acrylate, and heat up under stirring To 120-140 ℃, make the raw materials undergo polymerization reaction, the reaction time is 2 hours, and obtain a uniform viscous liquid; fully condense to room temperature, and use ethylene glycol as a solvent to dilute.

[0024] A water separator is set in the reaction kettle, and the reaction product is separated by the water separator after the con...

Embodiment 1

[0027] Corrosion inhibitor for offshore oilfield water treatment system of the present invention, each raw material is respectively: sodium phosphate 50g, naphthenic acid imidazoline 100g, glutaraldehyde 30g, 2-hydroxyphosphonoacetic acid 60g, methyl acrylate 1.5g, reaction finishes Then dilute with ethylene glycol as solvent.

[0028] The mass of methyl acrylate is 5% of the mass of glutaraldehyde, and the methyl acrylate is used as an initiator of the polymerization reaction.

[0029] During preparation, sodium phosphate and naphthenic acid imidazoline were completely dissolved in hot water respectively, and the above aqueous solution was put into a reaction kettle, and the temperature was raised to 90°C to cause condensation reaction between sodium phosphate and naphthenic acid imidazoline, and the reaction time was 3 hours; after the reaction product was refluxed to separate the water, continue to add glutaraldehyde, 2-hydroxyphosphonoacetic acid and methyl acrylate, and r...

Embodiment 2

[0037] Corrosion inhibitor for offshore oilfield water treatment system of the present invention, each raw material is respectively: sodium phosphate 70g, naphthenic acid imidazoline 120g, glutaraldehyde 50g, 2-hydroxyphosphonoacetic acid 50g, methyl acrylate 2.5g, reaction finishes Then dilute with ethylene glycol as solvent.

[0038] The mass of methyl acrylate is 5% of the mass of glutaraldehyde, and the methyl acrylate is used as an initiator of the polymerization reaction.

[0039] During preparation, sodium phosphate and naphthenic acid imidazoline were completely dissolved in hot water respectively, and the above aqueous solution was put into the reaction kettle, and the temperature was raised to 100°C to cause condensation reaction of sodium phosphate and naphthenic acid imidazoline. The reaction time was 3 Hours; after the reaction product was refluxed to separate the water, continue to add glutaraldehyde, 2-hydroxyphosphonoacetic acid and methyl acrylate, and heat up...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
quality scoreaaaaaaaaaa
quality scoreaaaaaaaaaa
quality scoreaaaaaaaaaa
Login to View More

Abstract

A corrosion inhibitor for offshore oilfield water treatment system, the raw materials selected by weight are: 50-100 parts of sodium phosphate, 100-150 parts of imidazoline naphthenate, 30-50 parts of glutaraldehyde, 2-hydroxy 50-100 parts of phosphonoacetic acid and 1.5-2.5 parts of methyl acrylate are diluted with ethylene glycol as a solvent after the reaction. The invention has the advantages of less dosage, less side effects, and low cost. The corrosion inhibitor for offshore oilfield water treatment system of the present invention adopts the method of first condensing sodium phosphate and naphthenic acid imidazoline and then polymerizing with glutaraldehyde and 2-hydroxyphosphonoacetic acid in the preparation process. The formula is simple and the raw materials are easy to obtain , has good economic benefits.

Description

technical field [0001] The invention relates to the technical field of offshore oilfield water treatment, in particular to a corrosion inhibitor for offshore oilfield water treatment systems with simple components, convenient preparation, low cost and high corrosion inhibition rate and a preparation method thereof. Background technique [0002] Corrosion refers to the destruction of materials under the action of surrounding media. There are various forms of corrosion. According to the environment or cause of corrosion, there are atmospheric corrosion, soil corrosion, marine corrosion, biological corrosion, water corrosion, and non-aqueous solution corrosion. According to the results or manifestations of corrosion, there are point corrosion, crevice corrosion, intergranular corrosion, stress corrosion cracking, corrosion fatigue, wear corrosion, etc. [0003] Industrial corrosion is mainly caused by corrosive components contained in raw materials and generated in the process...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08G16/02C09K8/54
Inventor 康玉彬梁海东
Owner E TECH ENERGY TECH DEV CORP