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Additive suitable for oil pipe cleaning and descaling and preparation method of additive

A technology of additives and oil pipes, applied in the field of oil pipe cleaning and descaling additives and its preparation, can solve a large number of problems, equipment and personnel safety hazards, etc.

Pending Publication Date: 2020-05-12
SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pickling has a good cleaning effect, but pickling will produce a large amount of carbon dioxide and hydrogen sulfide gas, causing potential harm to equipment and personnel safety

Method used

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  • Additive suitable for oil pipe cleaning and descaling and preparation method of additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The components and mass percentage content of the additive are: fluorocarbon alkyl amide 10%, fluorocarbon imidazoline quaternary ammonium salt 3%, hydrocarbon imidazoline quaternary ammonium salt 5%, CH 2 CH 2 CONH 2 CH 2 CH 2 NHCH 2 CH 2 OH 5%, OP-10 1%, Pingpingjia 25 1%, Ethylene Glycol Methyl Ether 5%, Methanol 10%, Water 60% Mix and compound each component and stir evenly.

[0026] Add 10% by mass of the above compounded additives into the acid solution for oil pipe cleaning and descaling (10% by mass hydrochloric acid), and then use the acid solution to clean the oil pipe. Cleaning results: The inner surface of the oil pipe is cleaned, no residual oxides and scales, no secondary rust, no pitting, no obvious H 2 S smell, excellent cleaning effect.

Embodiment 2

[0028] The components and mass percentage content of the additive are: 12% of fluorocarbon alkylamide, 5% of fluorocarbon imidazoline quaternary ammonium salt, 5% of hydrocarbon imidazoline quaternary ammonium salt, CH 2 CH 2 CONH 2 CH 2 CH 2 NHCH 2 CH 2 OH 10% OP-10 2%, Pingpingjia 25 2%, Ethylene glycol methyl ether 5%, Ethylene glycol ether 5%, Ethanol 15%, Water 51% Mix and compound each component and stir evenly.

[0029] Add the above compounded additives at 15% by mass to the acid solution for oil pipe cleaning and descaling (hydrochloric acid with a mass percentage of 10%), and then use the acid solution to clean the oil pipe. Cleaning results: The inner surface of the oil pipe is cleaned, no residual oxides and scales, no secondary corrosion, no pitting corrosion, no obvious H 2 S smell, excellent cleaning effect.

Embodiment 3

[0031] The components and mass percentage of the additive are: 15% fluorocarbon alkyl amide, 5% fluorocarbon imidazoline quaternary ammonium salt, 10% hydrocarbon imidazoline quaternary ammonium salt, CH 2 CH 2 CNCH 2 CH 2 NHCH 2 CH 2 OH 5%, OP-10 3%, Pingpingjia 25 3%, Ethylene Glycol Propyl Ether 10%, Methanol 5%, Ethanol 5%, n-Butanol 5%, Water 34%. Stir well.

[0032] Add 10% by mass of the above compounded additives into the acid solution for oil pipe cleaning and descaling (15% by mass sulfamic acid), and then use the acid solution to clean the oil pipe. Cleaning results: The inner surface of the oil pipe is cleaned, no residual oxides and scales, no secondary rust, no pitting, no obvious H 2 S smell, excellent cleaning effect.

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Abstract

The invention discloses an additive suitable for oil pipe cleaning and descaling and a preparation method of the additive. The preparation method comprises the following steps that 10 %-15 % of fluorocarbon alkylamide, 1 %-5 % of fluorocarbon imidazoline quaternary ammonium salt, 5 %-10 % of hydrocarbon imidazoline quaternary ammonium salt, 2 %-5 % of N-R-based ethanolamine, 1 %-3 % of emulsifiersOP-10, 1 %-3% of peregal O-25, 3 %-8 % of stabilizers, 5 %-15 % of solvent and 36 %-72 % of water are mixed according to a matching ratio and uniformly stirred to obtain the product. The additive andthe method have the characteristics that the components are simple, the preparation is convenient, the rapidness and high efficiency are achieved, the cost is low, the descaling efficiency is high, the usage amount is low, no harm comes to an oil pipe, the environmental friendliness is achieved, the side effect is small and the like.

Description

technical field [0001] The invention belongs to the technical field of additives, and in particular relates to an additive suitable for oil pipe cleaning and descaling and a preparation method thereof. Background technique [0002] At present, in the oilfield gathering and transportation system, due to the influence of water quality, flow rate, pressure and temperature changes on the balance of scale-forming ions, they will combine to form calcium carbonate, magnesium carbonate, calcium sulfate, barium sulfate, strontium sulfate, etc. and deposit out, forming oil pipe blockage. And cause serious consequences such as under-deposit corrosion. The most commonly used descaling method for oil pipe scaling is pickling. Pickling descaling is mainly used for carbonate scale, hydroxide scale and iron compound scale. Commonly used acids include inorganic acids and organic acids, and inorganic acids include hydrochloric acid. , nitric acid and sulfuric acid, organic acids include sulf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/02
CPCC23G1/02
Inventor 黄瑾侯雯雯陈君关雨晨冯鹏驰
Owner SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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