Instant guar gum and preparation method thereof

An instant type, guar gum technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of slow viscosity recovery and weak shear resistance.

Active Publication Date: 2014-02-05
张春雨
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, nearly 90% of the thickener used in oil fields is hydroxypropyl guar gum, but the gel-breaking residue of the hydroxypropyl guar gum thickener system is 350 mg / L, and the viscosity of the hydroxypropyl guar gum fracturing fluid recovers after high shear Slower, less shear resistant

Method used

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  • Instant guar gum and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043]Making cetyl modified carboxymethyl hydroxypropyl guanidine gum is made from the following raw materials in parts by weight: 80 parts of guanidine collagen powder, 10 parts of propylene oxide, 7.5 parts of chloroacetic acid, and 20% hydrochloric acid in mass concentration 6.5 parts, 200 parts of solvent alcohol, 9 parts of lye with a concentration of 10%, 190 parts of water, 49 parts of hydrophobically modified substances and 1000 parts of washing medium; the solvent alcohol is ethanol; the hydrophobically modified substance is bromo Hexadecane, washing medium is Virahol; Wherein, preparation method comprises the steps:

[0044] 1. Put 80 parts of guanidine collagen powder into a container with a stirrer at room temperature, add 190 parts of water and 100 parts of solvent alcohol, stir for 5 minutes, and let stand for 3 hours;

[0045] 2. Slowly add 9 parts of lye with a concentration of 10% to the mixture solution after standing in step 1, and heat up to 75°C;

[0046]...

Embodiment 2

[0051] Making lauryl modified carboxymethyl hydroxypropyl guanidine gum is made from the raw materials of following parts by weight: 30 parts of guanidine collagen powder, 15 parts of propylene oxide, 9 parts of chloroacetic acid, mass concentration are 20% hydrochloric acid 9 parts, 170 parts of solvent alcohol, 20 parts of lye with a concentration of 10%, 150 parts of water, 20 parts of hydrophobic modified substances and 1000 parts of washing medium; the solvent alcohol is methanol; the hydrophobic modified substance is bromo Dodecane; The washing medium is methanol; Wherein, the preparation method comprises the steps:

[0052] 1. Put 30 parts of guanidine collagen powder into a container with a stirrer at room temperature, add 150 parts of water and 110 parts of solvent alcohol, stir for 5 minutes, and let stand for 3 hours;

[0053] 2. Slowly add 20 parts of lye with a concentration of 10% to the mixture solution after standing in step 1, and heat up to 75°C;

[0054] Th...

Embodiment 3

[0059] Making octadecyl modified carboxymethyl hydroxypropyl guanidine gum is made from the following raw materials in parts by weight: 60 parts of guanidine collagen powder, 17 parts of propylene oxide, 4 parts of chloroacetic acid, and the hydrochloric acid of 20% in mass concentration 7 parts, 180 parts of solvent alcohol, 11 parts of lye, 185 parts of water, 40 parts of hydrophobically modified substances and 1000 parts of washing medium with a concentration of 10%; the solvent alcohol is isopropanol; the hydrophobically modified substance is Brominated octadecane; The washing medium is ethanol; Wherein, the preparation method comprises the steps:

[0060] 1. Put 60 parts of guanidine collagen powder into a container with a stirrer at room temperature, add 185 parts of water and 130 parts of solvent alcohol, stir for 5 minutes, and let stand for 3 hours;

[0061] 2. Slowly add 11 parts of lye with a concentration of 10% to the mixture solution after standing in step 1, and...

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Abstract

The invention belongs to instant guar gum and a preparation method thereof. The instant guar gum is prepared from the following raw materials in parts by weight: 20-80 parts of guar gum raw powder, 10-25 parts of propylene oxide, 4-10 parts of chloroacetic acid, 5-10 parts of hydrochloric acid with mass concentration of 20 percent, 150-200 parts of solvent alcohol, 8-20 parts of alkali liquor with concentration of 10 percent, 150-200 parts of water, 20-50 parts of hydrophobic modification material and 1000 parts of washing medium, wherein the solvent alcohol is any one of methanol, ethanol, ethylene glycol or isopropyl alcohol; the hydrophobic modification material is any one of bromododecane, bromohexadecane or bromooctadecane; the washing medium is any one of isopropyl alcohol, methanol or ethanol. According to the instant guar gum and the preparation method thereof, a step of taking hydroxypropyl guar gum out in oil field fracturing construction is not needed, a reaction process is saved, and pollution and waste caused by post-treatment of the reaction process are reduced.

Description

technical field [0001] The invention belongs to the technical field of guar gum polymer used in oilfield fracturing, and in particular relates to an instant guar gum and a preparation method thereof. Background technique [0002] Water-based fracturing fluid has the characteristics of low cost and high safety, and is currently widely used. Domestic water-based fracturing fluid accounts for more than 90% of the entire fracturing system. Thickeners are the most important additives for water-based fracturing fluids, mainly including natural galactomannans, synthetic polymers and cellulose. [0003] The advantages and disadvantages of thickeners in water-based fracturing fluids currently used are compared in the following table: [0004] [0005] When fracturing, the fracturing fluid needs to have properties such as fast swelling, high viscosity, high shear, high sand-carrying properties, and no residue in gel breaking. Fast swelling can save fracturing operation time, high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/00C09K8/68
Inventor 张玄张鹏张聪忠
Owner 张春雨
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