Preparation method of fracture acidizing foaming cleanup additive

A technology of foaming and drainage aids and fracturing acidification, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems that the two preparations cannot exert the best effect, poor compatibility, etc., and avoid complex The trouble of mixing foaming agent and drainage aid, easy to use, and the effect of cost reduction

Inactive Publication Date: 2019-01-04
黄旭东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention: Aiming at the problem that there is poor compatibility between the foaming agent and the drainage aid used today, resulting in the failure of the two preparations to exert their best effects, a fracturing acidification foaming aid is provided. Preparation method of discharge agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0028] Take 10g of alkyl glycidyl ether, 20g of lauryl amidopropyl dimethyl tertiary amine, 40g of absolute ethanol and 10g of deionized water and mix them at 50°C at a rate of 600r / min for 4h. Cool to room temperature to obtain a reaction solution; distill the reaction solution to remove the solvent, then add 30 g of ethyl acetate for recrystallization, dry the crystals in vacuum to obtain the product; mix 10 g of sodium hydride and 40 g of tetrahydrofuran to obtain component A, and take 10 g of the product Mix with 30g tetrahydrofuran to obtain component B, take 20g 1,3 propane sultone and 30g tetrahydrofuran and mix evenly to obtain component C; take 20g component A and 20g component B, mix and stir, and add 40g component C after standing for 30min , heat up to 60°C, keep warm for 4 hours to obtain mixed solution A; mix 60g mixed solution A with 20g methanol to obtain mixed solution B, take 40g n-butanol and 10g deionized water to prepare n-butanol aqueous solution, and dist...

example 2

[0030]Mix 15g of alkyl glycidyl ether, 30g of dodecyl amidopropyl dimethyl tertiary amine, 60g of absolute ethanol and 15g of deionized water, stir at 50°C at a rate of 600r / min for 4h, and then statically Cool to room temperature to obtain a reaction solution; distill the reaction solution to remove the solvent, then add 45g of ethyl acetate for recrystallization, dry the crystals in vacuum to obtain the product; mix 15g of sodium hydride and 60g of tetrahydrofuran to obtain component A, and take 15g of the product Mix with 45g of tetrahydrofuran to obtain component B, take 30g of 1,3 propane sultone and 45g of tetrahydrofuran and mix evenly to obtain component C; take 30g of component A and 30g of component B and mix and stir, after standing for 30min, add 60g of component C , heat up to 60°C, keep warm for 4 hours to obtain mixed solution A; mix 90g mixed solution A with 30g methanol to obtain mixed solution B, take 60g n-butanol and 15g deionized water to prepare n-butanol ...

example 3

[0032] Take 20g of alkyl glycidyl ether, 40g of lauryl amidopropyl dimethyl tertiary amine, 80g of absolute ethanol and 20g of deionized water, stir at 50°C at a rate of 600r / min for 4h, and then statically Cool to room temperature to obtain a reaction solution; distill the reaction solution to remove the solvent, then add 60 g of ethyl acetate for recrystallization, dry the crystals in vacuum to obtain the product; mix 20 g of sodium hydride and 80 g of tetrahydrofuran to obtain component A, and take 20 g of the product Mix with 60g tetrahydrofuran to obtain component B, take 40g 1,3 propane sultone and 60g tetrahydrofuran and mix evenly to obtain component C; take 40g component A and 40g component B, mix and stir, and add 80g component C after standing for 30min , heat up to 60°C, keep warm for 4 hours to obtain mixed solution A; mix 120g mixed solution A with 40g methanol to obtain mixed solution B, take 80g n-butanol and 20g deionized water to prepare n-butanol aqueous solu...

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Abstract

The invention relates to a preparation method of a fracture acidizing foaming cleanup additive, and belongs to the technical field of cleanup additives. A prepared foam-stabilizing surfactant mainly comprises a zwitterionic surfactant and has large relative molecular weight and larger superficial area, a denser and firmer interfacial film can be formed on the solid-liquid two-phase surface after part of foaming power is sacrificed, and bubbles are not prone to breaking accordingly; dodecyl sulfobetaine molecules show higher positive electricity and are easily associated with electronegative lauryl sodium sulfate molecules, and by means of combined action of hydrophobic force and electrostatic force of the two kinds of molecules, compounding can be enhanced and the deficiency of the foamingpower of the foam-stabilizing surfactant can be made up. The fracture acidizing foaming cleanup additive prepared with the method is dual-purpose, avoids troubles caused by compounding of a foaming agent and a cleanup additive during construction, realizes fast foaming and is high in bubble strength and simpler to use, and the cost is reduced.

Description

technical field [0001] The invention relates to a preparation method of a fracturing acidification foaming and drainage aid, and belongs to the technical field of drainage aids. Background technique [0002] Fracturing and acidizing has been widely used in oilfields as the main technology for increasing production and injection, but the problem of damage to the formation by its working fluid cannot be ignored at the same time. Studies have shown that the more working fluid injected, the greater the filtration loss and the greater the damage to the core; at the same time, the longer the filtration working fluid stays in the formation, the greater the damage to the formation . Therefore, one of the methods to reduce formation damage is to reduce the fluid loss of the working fluid, and to speed up and improve the flowback of the working fluid. [0003] During the development process of natural gas wells, due to fracturing, acidification and other operations, water continuous...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/74
CPCC09K8/602C09K8/74
Inventor 黄旭东周立骆兵建
Owner 黄旭东
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