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Multi-effect emulsion type thickening agent and preparation method thereof

A technology of emulsion type and thickener, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of not being able to meet the construction environment at the same time, affect the construction efficiency, and cumbersome construction, so as to improve the construction efficiency and rigidity , fast dissolution effect

Active Publication Date: 2021-11-09
陕西铜泽新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of the existing technology that it is cumbersome to prepare liquid in advance before construction, which affects the construction efficiency, and at the same time, it has a single function and cannot meet different construction environments at the same time

Method used

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  • Multi-effect emulsion type thickening agent and preparation method thereof
  • Multi-effect emulsion type thickening agent and preparation method thereof
  • Multi-effect emulsion type thickening agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of multi-effect emulsion type thickener, prepared by this method:

[0031] (1) Mix 12 parts of acrylamide, 4 parts of acrylic acid, 2 parts of methacryloylpropyltrimethylammonium chloride, 2 parts of 2-acrylamido-2-phenylethanesulfonic acid, 1 part of di-tert-butyl Add hydrogen peroxide and 1 part of EDTA disodium salt to 40 parts of deionized water, stir until the solution is completely dissolved, adjust the pH to 6.8 with sodium hydroxide, and prepare an aqueous phase;

[0032] (2) 4 parts of Arlacel 83 and 2 parts of OP-10, a total of 6 parts of emulsifier, were dissolved in 30 parts of white oil to prepare an oil phase;

[0033] (3) Mix the prepared water phase with the oil phase, and form a water-in-oil type pre-emulsion under the action of a high-speed mixer at 10000r / min;

[0034] (4) Nitrogen and deoxygenation are carried out on the above-mentioned pre-emulsion for 30 minutes to lower the temperature to between 15 and 20°C, and slowly add 1 part of white...

Embodiment 2

[0037] A kind of multi-effect emulsion type thickener, prepared by this method:

[0038] (1) 24 parts of acrylamide, 8 parts of acrylic acid, 4 parts of methacryloylpropyltrimethylammonium chloride, 4 parts of 2-acrylamido-2-phenylethanesulfonic acid, 2 parts of di-tert-butyl Hydrogen peroxide and 2 parts of ethylenediaminetetraacetic acid disodium salt were added to 20 parts of deionized water, stirred until the solution was completely dissolved, and the pH was adjusted to 7 by sodium hydroxide to prepare an aqueous phase;

[0039] (2) 2 parts of Span-85 and 1 part of TX-10, a total of 3 parts of emulsifier, were dissolved in 29 parts of kerosene to prepare an oil phase;

[0040] (3) Mix the prepared water phase with the oil phase, and form a water-in-oil type pre-emulsion under the action of a high-speed mixer at 10000r / min;

[0041] (4) Nitrogen and deoxygenation are carried out on the above pre-emulsion for 30 minutes to lower the temperature to 15-20° C., and 2 parts of ...

Embodiment 3

[0044] A kind of multi-effect emulsion type thickener, prepared by this method:

[0045] (1) 24 parts of acrylamide, 8 parts of acrylic acid, 4 parts of methacryloylpropyltrimethylammonium chloride, 4 parts of 2-acrylamido-2-phenylethanesulfonic acid, 2 parts of cyclohexane peroxide Add ketone and 2 parts of EDTA tetrasodium salt to 30 parts of deionized water, stir until the solution is completely dissolved, adjust the pH to 7.2 with sodium hydroxide, and prepare an aqueous phase;

[0046] (2) 2 parts of Span-85 and 1 part of OP-10, a total of 3 parts of emulsifier, were dissolved in 20 parts of liquid paraffin to prepare an oil phase;

[0047] (3) Mix the prepared water phase with the oil phase, and form a water-in-oil type pre-emulsion under the action of a high-speed mixer at 10000r / min;

[0048] (4) Nitrogen and deoxygenation were performed on the above-mentioned pre-emulsion for 30 minutes to lower the temperature to 15-20° C., and 2 parts of ammonium ferrous sulfate he...

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Abstract

The invention discloses a one-dose multi-effect emulsion type thickening agent and a preparation method thereof. The problems that in the prior art, liquid needs to be prepared in advance, construction is tedious, construction efficiency is affected, meanwhile, the function is single, and different construction environments cannot be met at the same time exist. According to the technical scheme, the method comprises the following steps: dissolving a water-soluble monomer in water to obtain a water phase, mixing solvent oil and an emulsifier to obtain an oil phase, stirring the mixed oil-water phase at a high speed to obtain a pre-emulsion, carrying out a reaction through inverse emulsion polymerization, and adding a phase inversion agent into the prepared emulsion to obtain the one-dose multi-effect emulsion type thickening agent. The one-dose multi-effect emulsion type thickening agent prepared by the invention is used as a fracturing fluid, and has different effects by adjusting the dosage. When a small amount of the one-dose multi-effect emulsion type thickening agent is added, the one-dose multi-effect emulsion type thickening agent can be used as a slickwater fracturing fluid and has the characteristics of low friction resistance, salt resistance and excellent dispersing and dissolving performance; and when the addition amount is large, the the one-dose multi-effect emulsion type thickening agent can be used as a high-temperature-resistant fracturing fluid and has excellent temperature resistance and shear resistance. Seamless switching between the slick water fracturing fluid and the high-temperature-resistant fracturing fluid can be achieved by controlling the adding amount of the thickening agent, and the requirement for on-line continuous mixing large-scale site construction is met.

Description

technical field [0001] The invention belongs to the field of oil and gas field exploitation, and in particular relates to a one-dosage multi-effect emulsion type thickener and a preparation method thereof. Background technique [0002] Fracturing is one of the most important measures to increase production in the exploitation of oil and gas fields in my country, and the performance of fracturing fluid is directly related to the construction effect. Slippery water fracturing fluid has been widely used in the development of shale oil and gas reservoirs because of its high efficiency and low cost. High temperature resistant fracturing fluid has attracted much attention as the focus of oil exploration has shifted to deep reservoirs. In recent years, my country's oil and gas field reservoirs have shown a trend of complexity, which puts forward new requirements for the functionality of fracturing fluids. [0003] At this stage, polyacrylamide powder type fracturing fluid is usual...

Claims

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Application Information

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IPC IPC(8): C08F220/56C08F220/06C08F220/34C08F220/58C08F2/32C09K8/68C09K8/88
CPCC08F220/56C08F2/32C09K8/68C09K8/882C08F220/06C08F220/34C08F220/585
Inventor 赖小娟张小鑫王磊文新李朋刘卫博柳小虎杨雯雯
Owner 陕西铜泽新能源科技有限公司
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