Temperature-resistant and salt-resistant polymer clean fracturing fluid thickening agent and preparation method thereof

A technology for cleaning fracturing fluids and polymers, applied in the directions of drilling compositions, chemical instruments and methods, etc., can solve the problem that the production and application of clean fracturing fluid thickeners have not achieved due effects, and new products are difficult to enter On-site and other problems, to achieve excellent shear thinning, easy flowback, good salt resistance

Active Publication Date: 2012-02-15
北京爱普聚合科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In conclusion, in recent years, the research and application of clean fracturing fluid thickeners are developing in the direction of diversification, high temperature resistance, and low cost, and different types of fracturing fluid thickeners are constantly enriched and developed, but most Part of the research is limited to the laboratory test stage. Due to the limitation of synthesis process, cost and other conditions, it is difficult for new products to enter the field, so that the production and application of clean fracturing fluid thickeners have not achieved the desired effect

Method used

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  • Temperature-resistant and salt-resistant polymer clean fracturing fluid thickening agent and preparation method thereof
  • Temperature-resistant and salt-resistant polymer clean fracturing fluid thickening agent and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0055] Preparation and performance test of temperature-resistant and salt-resistant polymer clean fracturing fluid thickener 1:

[0056] 1. Weigh 76g of hexadecylamine and dissolve it in 103.2g of toluene solvent, add 20g of acrylic acid and 0.8g of sodium p-toluenesulfonate, and pass through a water separator to seal the reaction at 86°C and separate the water produced by the reaction , reacted for 24h, and then distilled under reduced pressure at 90°C for 9h until there was no distillate. After cooling to room temperature, the light yellow oily solid obtained in the reactor was the associated monomer N-hexadecyl acrylamide.

[0057] 2. Weigh 3g of potassium hydroxide and dissolve it in 22g of deionized water to prepare a potassium hydroxide solution. Then take by weighing 4.8g of acrylic acid, after the two carry out neutralization reaction for 30min, take by weighing 3g of the association monomer N-hexadecyl acrylamide synthesized in the first step, and 2.4g of the anionic ...

Embodiment 2

[0061] Preparation and performance test of temperature-resistant and salt-resistant polymer clean fracturing fluid thickener 2:

[0062] 1. Weigh 126g of hexadecylamine and dissolve it in 137.4g of toluene solvent, add 36g of acrylic acid and 0.6g of sodium p-toluenesulfonate, and pass through a water separator to seal the reaction at 93°C and separate the water produced by the reaction , reacted for 20h, and then distilled under reduced pressure at 81°C for 11h until there was no distillate. After cooling to room temperature, the light yellow oily solid obtained in the reaction kettle was the association monomer N-hexadecyl acrylamide.

[0063] 2. Weigh 9.8g of potassium hydroxide and dissolve it in 79.3g of deionized water to prepare potassium hydroxide solution. Then take 14g of acrylic acid, and weigh 6.3g of the associative monomer N-hexadecylacrylamide synthesized in the first step, and 4.2g of the anionic monomer p-vinylbenzenesulfonate after the neutralization reaction...

Embodiment 3

[0067] Preparation and performance test of temperature-resistant and salt-resistant polymer clean fracturing fluid thickener 3:

[0068] 1. Weigh 160g of hexadecylamine and dissolve it in 194.8g of toluene solvent, add 44g of acrylic acid, 1.2g of sodium p-toluenesulfonate, and pass through a water separator to seal the reaction at 90°C and separate the water produced by the reaction , reacted for 22h, and then distilled under reduced pressure at 86°C for 10h until there was no distillate. After cooling to room temperature, the light yellow oily solid obtained in the reaction kettle was the association monomer N-hexadecyl acrylamide.

[0069] 2. Weigh 7.2g of potassium hydroxide and dissolve it in 64.8g of deionized water to prepare a potassium hydroxide solution. Then take by weighing 10.8g of acrylic acid, and weigh 4.8g of the associative monomer N-hexadecylacrylamide synthesized in the first step after the neutralization reaction of the two, and 6g of the anionic monomer p...

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Abstract

The invention provides a temperature-resistant and salt-resistant polymer clean fracturing fluid thickening agent and a preparation method thereof. The temperature-resistant and salt-resistant polymer clean fracturing fluid thickening agent has the advantages of cleanliness, low damage, environmentally friendly characteristics, good viscosity increasing effects, very strong suspension properties,good thermal adaptability allowing a super-wide temperature range of 25 to 240 DEG C, good salt resistance, excellent shear stability, small frictional resistance, obvious fracture effects, long lasting time spent on production after compression, and good cost performance.

Description

technical field [0001] The invention relates to an engineering material, in particular to a temperature-resistant and salt-resistant polymer cleaning fracturing fluid thickener and a preparation method thereof. Background technique [0002] Fracturing has been developed rapidly and widely used as the main production and injection measures of oil and gas reservoirs. Fracturing is the use of pressure to press open formations to form fractures and support them with proppant to reduce fluid flow resistance and increase production and injection measures. The proppant is also called fracturing fluid. Water-based fracturing fluid refers to a fracturing fluid with no insoluble matter (residue) or very low insoluble matter after gel breaking (also known as residue-free fracturing fluid). At present, all water-based fracturing fluids have residues without exception. These residues will inevitably cause serious blockage to the formation and filling layers, greatly reducing the permea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/68C08F220/56C08F220/06C08F220/54C08F212/14
Inventor 郑焰罗于建白小丹
Owner 北京爱普聚合科技有限公司
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