A kind of high-efficiency instant multi-component copolymer dispersion liquid and preparation method thereof

A multi-component copolymer and dispersion technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of poor stability, low suspended solid content, poor suspension dispersibility, etc., and achieve low apparent viscosity and solid content High, good fluidity effect

Active Publication Date: 2022-04-29
SHANDONG NUOER BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most important thing in the water-soluble multi-polymer dispersion system is the suspension dispersibility of the polymer. However, the water-soluble multi-polymer dispersion system currently prepared generally has low suspended solids content, poor suspension dispersibility, and poor stability. And other issues

Method used

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  • A kind of high-efficiency instant multi-component copolymer dispersion liquid and preparation method thereof

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preparation example Construction

[0040] In a second aspect, the present invention provides a method for preparing the high-efficiency instant multi-polymer dispersion described in the first aspect of the present invention, said method comprising the steps of:

[0041] (1) Grinding the multi-component copolymer particles to obtain a multi-component copolymer fine powder; in the present invention, for example, performing low-temperature grinding on the multi-component copolymer particles, for example, performing the low-temperature grinding at a temperature not higher than 0° C., to obtain the obtained The above-mentioned multi-polymer fine powder is preferably obtained through low-temperature grinding to obtain a multi-polymer ultrafine powder with a particle size below 75 μm; as we all know, during the grinding and pulverization of conventional polymers, the polymer temperature is relatively high, and crosslinking reactions will occur, which may affect The solubility of the product has a certain impact, and wh...

Embodiment 1

[0070] The high-efficiency instant multi-polymer dispersion liquid in the present embodiment is made up of the component of following percentage by weight:

[0071] Multi-component copolymer ultra-fine powder (linear ultra-high molecular weight polyacrylamide ultra-fine powder): 45%;

[0072] Modified hectorite: 1.5%;

[0073] Dimerized fatty acid diethanolamide: 0.5%;

[0074] AEO-5: 0.5%;

[0075] Cetyltrimethylammonium chloride: 0.5%

[0076] Triethylene glycol monobutyl ether: 0.5%;

[0077] Emulsifier: 2%; wherein, the emulsifier is compounded by span80 and tween80, and the compounding ratio (mass ratio) is span80:tween80=2:1;

[0078] White oil (industrial 3# white oil): 49.5%;

[0079] The preparation method of the efficient instant multi-component copolymer dispersion liquid in the present embodiment comprises the steps:

[0080] ①Preparation of superfine powder: Low-temperature grinding of multi-component copolymer particles until the particle size is less than ...

Embodiment 2

[0089] The high-efficiency instant multi-polymer dispersion liquid in the present embodiment is made up of the component of following percentage by weight:

[0090] Multi-component copolymer ultra-fine powder (linear ultra-high molecular weight polyacrylamide ultra-fine powder): 50%;

[0091] Modified hectorite: 2%;

[0092] Fatty acid diethanolamide: 1%;

[0093] AEO-6: 1%;

[0094] Octadecyltrimethylammonium bromide: 1%

[0095] Triethanolamine: 1%;

[0096] Emulsifier: 3%; wherein, the emulsifier is compounded by span80 and tween80, and the compounding ratio (mass ratio) is span80:tween80=2:1;

[0097] White oil (industrial 3# white oil): 41%;

[0098] The preparation method of the efficient instant multi-component copolymer dispersion liquid in the present embodiment comprises the steps:

[0099] ①Preparation of superfine powder: Low-temperature grinding of multi-component copolymer particles until the particle size is less than 75 μm, to obtain super-fine multi-comp...

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Abstract

The invention relates to a high-efficiency instant multi-component copolymer dispersion and a preparation method thereof. The dispersion liquid comprises the following components in weight percent: multi-polymer copolymer fine powder: 45-55%; rheological agent: 1.5-3%; rheological additive: 0.5%-1%; wetting agent : 0.5-1%; stabilizer: 0.5-2%; activator: 0.5-1%; emulsifier: 1.5-4%; white oil: 34-50%; the method is: grinding multi-component copolymer particles , to obtain a multi-component copolymer fine powder; add a wetting agent and a stabilizer to the multi-component copolymer fine powder for surface treatment to obtain a pre-treated fine powder; white oil, pre-treated fine powder, rheological agent, rheological additive, The activator and emulsifier are mixed and then activated to obtain the dispersion. The dispersion liquid of the present invention has high solid content and is more stable, the delamination rate is less than 2% within 6 months, the dispersion liquid has low apparent viscosity, good fluidity, and no precipitation after long-term storage.

Description

technical field [0001] The invention relates to the technical field of production stimulation aids for oil and gas fields, in particular to a high-efficiency instant multi-component copolymer dispersion and a preparation method thereof. Background technique [0002] At present, water-soluble multipolymer copolymers in oil fields are mainly granules, powders, water-in-oil emulsions or aqueous solutions prepared by aqueous solution polymerization, emulsion polymerization, suspension polymerization, etc. The water-in-oil emulsion and aqueous solution can be mixed online due to their fast dissolution speed. It has been recognized by the oilfield market, but the water-in-oil emulsion and aqueous solution products have low solid content, low viscosity, high transportation cost, and poor salt resistance, which greatly increase the oilfield operation cost. Multi-component copolymer particles and fine powders have a large molecular weight adjustment range, a large adjustment space fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/03C09K8/58C09K8/588
Inventor 荣敏杰孙建波许永升于庆华荣帅帅
Owner SHANDONG NUOER BIOLOGICAL TECH
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