A kind of oil field demulsification type defoamer and preparation method thereof

A defoamer and demulsification technology, applied in separation methods, chemical instruments and methods, foam dispersion/prevention, etc., can solve problems that have not been seen in the newspapers, and achieve a reduction in the dosage of chemicals, a simple preparation method, and high defoaming efficiency. Effect

Active Publication Date: 2020-09-01
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on oilfield defoamers with demulsification ability has not yet appeared in the newspapers

Method used

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  • A kind of oil field demulsification type defoamer and preparation method thereof
  • A kind of oil field demulsification type defoamer and preparation method thereof
  • A kind of oil field demulsification type defoamer and preparation method thereof

Examples

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Effect test

preparation example 1

[0025] A kind of synthesis of demulsification type defoamer in oil field, by the polyether modified silicone oil that mass fraction is 10%, the amine polyether that mass fraction is 5%, the synergist that mass fraction is 5%, mass fraction is 80 % of the solvent prepared, the synthesis steps are as follows:

[0026] (1) 200g hydrogen-containing polydimethylsiloxane compound (molecular weight: 1500g / mol, hydrogen content mass fraction: 0.1%, calculated Si-H is 0.2mol), 105g polyether 1# (538g / mol) mol, unsaturation 0.00186mol / g, calculated C=C is 0.195mol), 105g polyether 2# (molecular weight is 1000g / mol, unsaturated 0.001mol / g, calculated C=C is 0.105mol) into the reaction kettle , Bubble nitrogen for protection, stir and heat up to 80°C. Add 0.41g of 1% chloroplatinic acid-isopropanol solution, control the temperature at 90°C, and react at normal pressure for 2 hours to make polyether modified silicone oil; where polyether C=C: low hydrogen-containing silicone oil Si- The ...

preparation example 2

[0029] The synthesis of an oil field demulsification type defoamer, by mass fraction is 7% polyether modified silicone oil, mass fraction is 4% amine polyether, mass fraction is 5% synergist, mass fraction is 84 % of the solvent prepared, the synthesis steps are as follows:

[0030] (1) 200g hydrogen-containing polydimethylsiloxane compound (molecular weight: 3500g / mol, hydrogen content mass fraction: 0.3%, calculated Si-H is 0.6mol), 200g polyether 1# (227g / mol) mol, unsaturation 0.0044mol / g, calculated C=C is 0.88mol), 50g polyether 2# (molecular weight is 2000g / mol, unsaturation 0.0005mol / g, calculated C=C is 0.025mol) into the reaction kettle , Bubble nitrogen for protection, stir and heat up to 110°C. Add 0.23g of Pt-divinyltetramethyldisiloxane complex, control the temperature at 120°C, and react at normal pressure for 4 hours to make polyether modified silicone oil; where polyether C=C: low content The Si-H molar ratio of hydrogen silicone oil is 1.5:1.

[0031] (2) ...

preparation example 3

[0033] The synthesis of an oil field demulsification type defoamer is composed of polyether modified silicone oil with a mass fraction of 9%, amine polyether with a mass fraction of 2%, synergist with a mass fraction of 1%, and a mass fraction of 88 % of the solvent prepared, the synthesis steps are as follows:

[0034] (1) First, 200g hydrogen-containing polydimethylsiloxane compound (molecular weight is 2000g / mol, hydrogen content mass fraction is: 0.28%, calculated Si-H is 0.56mol), 120g polyether 1# (molecular weight is 200g / mol, unsaturation 0.005mol / g, calculated C=C is 0.6mol), 80g polyether 2# (molecular weight is 1900g / mol, unsaturation 0.00053mol / g, calculated C=C is 0.04mol) added to the reaction The kettle was protected by blowing nitrogen gas, stirred and heated to 90°C. Add 0.2 g of 1,3-divinyl-1,1,3,3-tetraphenyldisiloxane platinum, control the temperature at 120°C, and react at normal pressure for 3 hours to prepare polyether-modified silicone oil; The molar ...

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Abstract

The invention relates to an emulsion breaking type de-foaming agent for an oil field and a preparation method thereof. The emulsion breaking type de-foaming agent for the oil field is prepared by taking polyether modified silicone oil as a main body and polyethylene polyamine polyether as an auxiliary agent and adding a synergist and a solvent. The polyether modified silicone oil is prepared by taking terminated allyl methyl-terminated polyether and low-hydrogen-containing silicone oil as raw materials and reacting at pre-set temperature under the action of a platinum catalyst. The emulsion breaking type de-foaming agent for the oil field is prepared by uniformly mixing and stirring the following components in percentage by mass: 7 percent to 10 percent of the polyether modified silicone oil, 2 percent to 5 percent of the polyethylene polyamine polyether, 1 percent to 5 percent of the synergist and the balance of the solvent. The emulsion breaking type de-foaming agent for the oil field, provided by the invention, not only has the characteristics of small dosage and high de-foaming efficiency, but also has a certain emulsion breaking capability; the aim of reducing the dosage of an emulsion breaking agent of the oil field and the de-foaming agent can be realized. The emulsion breaking type de-foaming agent can be directly added into a foaming solution and can also be added after being diluted to 5 to 20 times by utilizing a hydrocarbon solvent. The emulsion breaking type de-foaming agent for the oil field is very suitable for treating crude oil of the oil field, especially an offshore oil field.

Description

technical field [0001] The invention belongs to the field of chemical defoaming, and relates to a crude oil defoaming agent, in particular to a preparation method of an oil field demulsification type defoaming agent. Background technique [0002] The crude oil produced in most oilfields is mainly composed of three parts: oil, water and associated gas. The crude oil treatment process is the process of separating the water and associated gas components in the crude oil to obtain the oil components. Crude oil defoamer and demulsifier are two essential chemical additives in oilfield crude oil treatment. [0003] Commonly used defoamer products in the process of oil and gas water treatment in oilfields include polyethers, silicones and polyether-modified silicone oil compounds. Commonly used demulsifiers are mainly polyethers of different structures and polyether modified compounds. [0004] The molecular structure of polyether and polyether-modified silicone oil compounds is c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/035B01D19/04
CPCB01D19/0409B01D19/0413C09K8/035
Inventor 胡廷王永军张国欣王仲广郭海军陆原李羽王磊
Owner CHINA NAT OFFSHORE OIL CORP
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