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A kind of oil recovery scale inhibitor and preparation method thereof

A technology of scale inhibitor and raw material, applied in the field of oil production scale inhibitor and its preparation, can solve the problems that the scale removal ability cannot meet the chemical production, the function of the scale inhibitor is single, the service life of the equipment is shortened, etc. Wide application value, keep smooth effect

Inactive Publication Date: 2017-05-31
魏海
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing scale inhibitors have a single function, and some of them use raw materials that are corrosive to pipelines or equipment in order to improve the effect of scale inhibition or descaling, resulting in reduced equipment life; some scale inhibitors have low ability (generally lower than 95 %), the descaling ability cannot meet the needs of existing chemical production

Method used

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  • A kind of oil recovery scale inhibitor and preparation method thereof
  • A kind of oil recovery scale inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: 20 parts of horse-propylene copolymer, 25 parts of aminotrimethylene phosphonic acid, 20 parts of diethylenetriaminepentamethylene phosphonic acid, 15 parts of ethylenediamine tetramethylene phosphoric acid, 3 parts of potassium acrylate, sodium propylene sulfonate 20 parts, 0.2 parts of tert-butyl hydroperoxide, 3 parts of α, ω-dichloropolydiorganosiloxane, 8 parts of potassium salt of sulfonated tannin extract, 10 parts of sodium hydroxymethyl starch, 4 parts of ethylene oxide , 0.05 parts of glacial acetic acid, and 80 parts of ionized water.

Embodiment 2

[0015] Example 2: 25 parts of horse-propylene copolymer, 30 parts of aminotrimethylene phosphonic acid, 15 parts of diethylenetriaminepentamethylene phosphonic acid, 18 parts of ethylenediamine tetramethylene phosphate, 5 parts of potassium acrylate, sodium propylene sulfonate 6 parts, 0.2 parts of tert-butyl hydroperoxide, 5 parts of α,ω-dichloropolydiorganosiloxane, 2 parts of potassium sulfonated tannin extract, 15 parts of sodium hydroxymethyl starch, 5 parts of ethylene oxide , 0.02 parts of glacial acetic acid, and 90 parts of ionized water.

Embodiment 3

[0016] Example 3: 30 parts of horse-propylene copolymer, 20 parts of aminotrimethylene phosphonic acid, 17 parts of diethylenetriaminepentamethylene phosphonic acid, 20 parts of ethylenediamine tetramethylene phosphoric acid, 1 part of potassium acrylate, sodium propylene sulfonate 13 parts, 0.2 parts of tert-butyl hydroperoxide, 2 parts of α, ω-dichloropolydiorganosiloxane, 5 parts of potassium salt of sulfonated tannin extract, 20 parts of sodium hydroxymethyl starch, 2 parts of ethylene oxide , 0.03 parts of glacial acetic acid, and 100 parts of ionized water.

[0017] A preparation method of an oil production antiscalant, comprising the following steps: ① Mix potassium acrylate and sodium propylene sulfonate, add 3 times the weight of water, stir evenly, heat up to 50-60°C, add tert-butyl hydroperoxide , polymerized for 2 hours, and dried at 120°C for 1 hour to obtain a powdery solid; Mix sodium methyl starch with half the weight of raw material ionized water, heat up to ...

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Abstract

The invention discloses an oil production scale inhibitor and a preparation method thereof. The oil production scale inhibitor consists of the following raw materials in parts by weight: 20-30 parts of maleic-methyl acrylate copolymer, 20-30 parts of amino trimethylene phosphonic acid, 15-20 parts of diethylene triamine pentamethylene phosphonic acid, 15-20 parts of ethane diamine tetramethylene phosphonic acid, 1-5 parts of potassium acrylate, 6-20 parts of sodium allylsulfonate, 0.2 part of tert-butyl hydroperoxide, 2-5 parts of alpha,omega-dichloropolydimethylsiloxane, 2-8 parts of sulfonated tannin extract potassium salt, 10-20 parts of sodium carboxymethyl starch, 2-5 parts of ethylene oxide, 0.02-0.05 part of glacial acetic acid, and 80-100 parts of deionized water. The oil production scale inhibitor disclosed by the invention has certain salt, calcium and magnesium resistances, is low in viscosity and good in fluidity, has a certain antistatic capacity, has a scale inhibition ratio reaching 98.5% or above, and has very good corrosion prevention and scale inhibition effects.

Description

technical field [0001] The invention belongs to the field of petroleum engineering, in particular to an oil recovery scale inhibitor and a preparation method thereof. Background technique [0002] Scaling occurs in many equipment and pipelines in petroleum processing, and scale inhibitors are currently used to reduce fouling. At present, the existing scale inhibitors have a single function, and some of them use raw materials that are corrosive to pipelines or equipment in order to improve the effect of scale inhibition or descaling, resulting in reduced equipment life; some scale inhibitors have low ability (generally lower than 95 %), the descaling ability cannot meet the needs of existing chemical production. Contents of the invention [0003] The invention provides an antiscaling agent for oil production to solve the defects in the prior art. [0004] The present invention is achieved through the following technical solutions: [0005] An oil recovery scale inhibitor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/14C02F5/10C02F5/08C02F103/10
CPCC02F5/105C02F5/145C02F2103/10
Inventor 李乐乐张盼毕海波刘飞殷雍赵密丁婷婷李军王倩杨宏
Owner 魏海
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