Method for preparing easily-dispersible dustless guar gum granules

A guar gum, dust-free technology, applied in the field of preparation of modified guar gum, can solve the problems of injury to workers, hinder the complete release of viscosity, serious dust, etc., and achieve the effect of reducing dust damage

Active Publication Date: 2015-02-11
昆山京昆油田化学科技有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, all kinds of modified guar gum are in powder form. During the process of transportation and slurry mixing at the fracturing site, the dust is serious, which not only pollutes the environment, but also causes certain harm to the staff.
At the same time, the modified guar gum powder has strong hydrophilicity. When it enters the water, the rapidly hydrated part easily wraps the part that has not been in contact with the water, forming "fish eyes", which hinders the complete release of viscosity

Method used

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  • Method for preparing easily-dispersible dustless guar gum granules

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Get 100 mass parts of guar gum powder as raw material, add 1 mass part of surfactant JKS and 10 mass parts of ethanol mixed solution to carry out surface treatment of guar gum, react for 2 hours, then add 30 mass parts of binder water, pass The rotation of the disc makes the binder water and the guar gum powder come into close contact with each other to generate cohesive force and form porous and loose aggregates, then dry them in a boiling drying oven at 75°C, and finally sieve to obtain particles with a size of 1 to 5 mm of granular guar gum products.

Embodiment 2

[0018] Get 100 mass parts of modified guar gum powder raw materials, add 1.5 mass parts of fatty acid salt and 10 mass parts of ethanol mixed solution to carry out surface treatment to guar gum, react for 2 hours, then add 30 mass parts of binder water, in Under the action of different wind forces, the rubber powder floats up from the middle of the core tube in the tube, contacts with the binder water sprayed from the spray gun installed in the center of the bottom, and then bonds with the powder falling from the top, and then settles down from the outside of the core tube to form The particles are circulated up and down to make the particles evenly grow into porous and loose particles, followed by vacuum drying at 70°C and a vacuum degree of 0.092MPa for 2 hours, and finally sieved to obtain granular guar gum products with a particle size of 1-5 mm.

Embodiment 3

[0020] Get 100 mass parts of guar gum powder raw material, add the mixed solution of 1 mass part gelatin and 30 mass parts water to carry out surface treatment to guar gum, react for 2 hours, then add 20 mass parts of binder water, in different wind Under the action, the rubber powder floats up from the middle of the core barrel in the barrel and contacts with the binder water sprayed out by the spray gun installed in the center of the bottom, and then bonds with the powder falling from the top and then settles down from the outside of the core barrel to form the upper and lower layers of the particles. Circulate the flow to make the particles evenly grow into porous and loose particles, then dry them in an airflow drying oven at 70°C, and finally sieve to obtain granular guar gum products with a particle size of 1 to 5 mm.

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Abstract

The invention discloses a method for preparing easily-dispersible dustless guar gum granules. The method is characterized in that the guar gum granules are prepared from guar gum powder or modified guar gum powder by the processes of surface treatment, adhesion, granulation, drying, screening and the like, and the structure of the guar gum granules can be a spherical granular shape, an elliptic granular shape, a flat granular shape, a long granular shape or a square granular shape. By adopting the porous granular guar gum prepared by the method, dust injury can be reduced in the using process, constant-dissolving ingredients are added, so that the guar gum granules can be quickly dispersed in water and quickly hydrated and becomes sticky, namely generation of 'fisheye' of the guar gum in water can be avoided, and the viscosity of the guar gum can be quickly released.

Description

technical field [0001] The invention belongs to the technical field of preparation of modified guar gum, and relates to a preparation method of easily dispersible and dust-free guar gum particles. Background technique [0002] Fracturing technology is an important means for the effective development of low-permeability oil and gas fields. At present and in the future, different modified guar gums are still the most important thickeners for fracturing fluids in oil and gas fields. Usually all kinds of modified guar gums are in powder form, and the dust is serious during the transportation and mixing process of the fracturing site, which not only pollutes the environment, but also causes certain harm to the staff. At the same time, the modified guar gum powder has strong hydrophilicity. When it enters the water, the rapidly hydrated part is easy to wrap the part that is not in contact with the water, forming "fish eyes", which hinders the complete release of viscosity. Conte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/12C08L5/00
Inventor 何建平肖青香陈卫平陆辉叶应庆宫大军邓明宇崔俊杰蒋杰巩沛鑫朱明山籍淑贤何俊
Owner 昆山京昆油田化学科技有限公司
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