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Instant water-in-water emulsion resistance reducing agent for shale gas fracturing fluid and preparation method thereof

The technology of a water-in-water emulsion and a resistance reducing agent is applied in the directions of chemical instruments and methods, drilling compositions, etc., which can solve the problems of difficulty in dissolution, energy consumption, insoluble, etc., and achieves simple efficiency, convenient use and high molecular weight. Effect

Inactive Publication Date: 2019-01-04
SICHUAN WELDON CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the production process of powder products, the heat of reaction is difficult to dissipate, and it is easy to explode, and as the reaction progresses, the viscosity of the reaction system increases, and the difficulty of stirring also increases, and the drying process consumes a lot of energy.
During use, there are problems such as large dust and difficulty in dissolving, which also lead to increased personal safety and energy consumption of dissolving equipment, and other dosage forms currently on the market have disadvantages such as insoluble and energy consumption.

Method used

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  • Instant water-in-water emulsion resistance reducing agent for shale gas fracturing fluid and preparation method thereof
  • Instant water-in-water emulsion resistance reducing agent for shale gas fracturing fluid and preparation method thereof
  • Instant water-in-water emulsion resistance reducing agent for shale gas fracturing fluid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] An instant water-in-water emulsion drag reducer for shale gas fracturing fluid, characterized in that it includes the following components in parts by weight: 45 parts of acrylamide, 1 part of methacryloyloxyethyltrimethylammonium chloride 1 part of acrylic acid, 0.01 part of tert-butyl hydroperoxide, 0.01 part of polymethacryloxyethyltrimethylammonium chloride, and 1 part of ammonium sulfate aqueous solution.

[0023] Its preparation method comprises the following steps:

[0024] (1) Add a certain amount of acrylamide, methacryloyloxyethyltrimethylammonium chloride, acrylic acid, ammonium sulfate, polymethacrylic acid into a reaction vessel equipped with a condenser tube, a nitrogen conduit, a thermometer and a stirring device Acyloxyethyltrimethylammonium chloride and deionized water are stirred at a constant speed in a constant temperature water bath to fully dissolve the raw materials and stir evenly;

[0025] (2) After half an hour of deoxygenation with nitrogen, ...

Embodiment 2

[0027] An instant water-in-water emulsion drag reducer for shale gas fracturing fluid, characterized in that it includes the following components in parts by weight: 70 parts of acrylamide, 30 parts of methacryloyloxyethyltrimethylammonium chloride parts, 30 parts of acrylic acid, 0.3 parts of tert-butyl hydroperoxide, 0.3 parts of polymethacryloxyethyltrimethylammonium chloride, and 35 parts of ammonium sulfate aqueous solution.

[0028] Its preparation method comprises the following steps:

[0029] (1) Add a certain amount of acrylamide, methacryloyloxyethyltrimethylammonium chloride, acrylic acid, ammonium sulfate, polymethacrylic acid into a reaction vessel equipped with a condenser tube, a nitrogen conduit, a thermometer and a stirring device Acyloxyethyltrimethylammonium chloride and deionized water are stirred at a constant speed in a constant temperature water bath to fully dissolve the raw materials and stir evenly;

[0030] (2) After half an hour of deoxygenation wi...

Embodiment 3

[0032] An instant water-in-water emulsion drag reducer for shale gas fracturing fluid, characterized in that it includes the following components in parts by weight: 50 parts of acrylamide, 5 parts of methacryloyloxyethyltrimethylammonium chloride 5 parts of acrylic acid, 0.05 part of tert-butyl hydroperoxide, 0.05 part of polymethacryloxyethyltrimethylammonium chloride, and 1 part of ammonium sulfate aqueous solution.

[0033] Its preparation method comprises the following steps:

[0034] (1) Add a certain amount of acrylamide, methacryloyloxyethyltrimethylammonium chloride, acrylic acid, ammonium sulfate, polymethacrylic acid into a reaction vessel equipped with a condenser tube, a nitrogen conduit, a thermometer and a stirring device Acyloxyethyltrimethylammonium chloride and deionized water are stirred at a constant speed in a constant temperature water bath to fully dissolve the raw materials and stir evenly;

[0035] (2) After half an hour of deoxygenation with nitrogen...

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Abstract

The invention provides an instant water-in-water emulsion resistance reducing agent for a shale gas fracturing fluid and a preparation method thereof, and relates to the technical field of petroleum and natural gas mining. The instant water-in-water emulsion resistance reducing agent for the shale gas fracturing fluid is prepared from, by weight, 45-70 parts of acrylamide, 1-30 parts of methacryloyloxyethyl trimethyl ammonium chloride, 1-30 parts of crylic acid, 0.01-0.3 part of tert-butyl hydroperoxide, 0.01-0.3 part of methacryloxyethyltrimethyl ammonium chloride and 1-35 parts of ammonium sulfate aqueous solution. The instant water-in-water emulsion resistance reducing agent for a shale gas fracturing fluid has the advantages of being instant, high in molecular weight, energy-saving, efficient, environmentally friendly, convenient to use, cheap and the like and avoiding the defects of insolubility, energy consumption, environment pollution, expensive cost and the like of former products.

Description

technical field [0001] The invention relates to the technical field of petroleum and natural gas exploitation, in particular to an instant water-in-water emulsion drag reducer for shale gas fracturing fluid and a preparation method thereof. Background technique [0002] At present, aqueous solution polymerization products mainly include hydrosol and powdered polyacrylamide. Hydrosol is a product obtained by homopolymerization or copolymerization of an aqueous solution of acrylamide or other monomers. It is an early polyacrylamide product. Usually, the solid content of this dosage form is low (about 8%), the storage and transportation costs are high, and the molecular weight is low, ranging from hundreds of thousands to several million, so the application is greatly restricted. The aqueous solution polymerization method is used to prepare powder products, using water as a solvent, the synthesis is simple, the obtained polymer has a high molecular weight, and the product tran...

Claims

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Application Information

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IPC IPC(8): C09K8/68C08F220/56C08F220/34C08F220/06
CPCC08F220/56C09K8/68C09K8/882C08F220/34C08F220/06
Inventor 何伟王彬支亚靓张灵袁雪
Owner SICHUAN WELDON CHEM