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Inverse emulsion type acid thickener and preparation method thereof

A technology of acid thickener and inverse emulsion, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of affecting work efficiency, high energy, and long time consumption, so as to improve work efficiency and dissolution speed Fast and stable effect

Pending Publication Date: 2019-06-18
泰兴市奥成环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing acid thickeners are generally dry powder products, which need to consume more energy during preparation, and the time to completely dissolve in water or acidic solution is as high as 60 minutes, which takes a long time and seriously affects work efficiency

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment

[0021] A kind of inverse emulsion type acid thickener of the present invention, described thickener is synthesized by inverse emulsion polymerization oxidation-reduction by water phase ingredient, oil phase ingredient, by reaction total system mass percentage, described water phase The ingredients include 30-50% cationic monomer DMC, 1-30% deionized water, 0.005-1% sodium hypophosphite, 0.005-1% tert-butyl hydroperoxide, the pH value of the water phase ingredients Between 4-6; the oil phase ingredients include 20-30% light white oil, 5-10% non-ionic oleic acid lipid emulsifier.

[0022] Described nonionic oleic acid lipid emulsifier can adopt the one in polyoxyethylene oleate, glyceryl ether oleate, polyoxyethylene sorbitol hexaoleate.

[0023] The preparation method of thickener of the present invention, comprises the steps:

[0024] 1) According to the mass percentage of the total reaction system, stir 30-35% cationic monomer DMC, 1-30% deionized water, 0.005-1% sodium hypo...

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Abstract

The invention discloses an inverse emulsion type acid thickener and a preparation method thereof. The inverse emulsion type acid thickener is made by subjecting a water-phase material and an oil-phasematerial to inverse emulsion polymerization and redox reaction. The water-phase material includes 30-50% of DMC (dimethyl carbonate), 1-30% of deionized water, 0.005-1% of sodium hypophosphite, and 0.005-1% of an oxidant; the water-phase material has PH of 4-6. The oil-phase material includes 20-30% of light white oil and 5-10% of a nonionic oleate emulsifier. The preparation method comprises stirring DMC, deionized water, sodium hypophosphite and an oxidant to obtain a water-phase material, and mixing an emulsifier and light white oil to obtain an oil-phase material; mixing the water-phase material and the oil-phase material, and carrying out emulsifying and shearing to obtain a mixed liquid; introducing nitrogen, and adding a reducing agent to subject the mixed liquid to inverse emulsion polymerization; cooling to room temperature, and adding an inverse phase agent to obtain the thickener. The thickener herein has good stability and can quickly dissolve in water and acid solutions,so that working efficiency is improved greatly.

Description

technical field [0001] The invention relates to the field of acid thickeners, in particular to a reverse emulsion type acid thickener and a preparation method thereof. Background technique [0002] With the continuous development of low-permeability oil and gas reservoirs, acidizing production stimulation technology has become an important measure to increase oil and gas production. Acidizing is an effective method to stabilize and increase production of oil and gas wells, and stabilize and increase injection of water injection wells. Acid liquid thickener is a kind of polymer compound, which can make the acid liquid produce a high viscosity after being dissolved in the acid liquid, and can effectively control the diffusion rate of hydrogen ions in the acid liquid, thereby solving the pollution in the far well area and communicating oil and gas Diversion channels to increase oil and gas production. Existing acid thickeners are generally dry powder products, which need to co...

Claims

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Application Information

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IPC IPC(8): C08F120/34C08F2/32C09K8/74C09K8/88
Inventor 华红宁
Owner 泰兴市奥成环保科技有限公司