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A kind of betaine type amphoteric thickener based on guar gum derivative and preparation method thereof

A technology of betaine and derivatives, which is applied in the field of betaine-type amphoteric thickeners based on guar gum derivatives and its preparation, can solve the problems of high water-insoluble content, high floc content, easy corruption and deterioration, and achieve Fast swelling speed, inhibition of coagulation, reduction of fisheye phenomenon and residue effect

Active Publication Date: 2011-12-14
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Guar gum and its derivatives are used as thickeners, especially when guar collagen powder is used as a seawater-based thickener, the water-insoluble content is high, the dissolution rate is slow, the floc content is high, and it is easy to spoil. When base guar gum or carboxymethyl guar gum is used to thicken seawater or high salt water, its viscosity-increasing effect is poor, and even coagulation occurs

Method used

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Embodiment 2

Embodiment 3

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Abstract

The invention relates to a guar derivative-based betaine-type amphoteric thickening agent with a structural formula (I) and a preparation method thereof, wherein R is selected from hydroxypropyl, hydroxyethyl, carboxymethyl, 2-hydroxypropyl-N,N,N-trimethyl; R1 and R2 represent C1-C4 alkyl respectively, and R3 represents a carboxylic group COO- or a sulfonic group SO3-; the substitution degree of R is 0.02-0.6, and the substitution degree of the betaine-type amphoteric ion pair is 0.02-0.6.

Description

technical field The invention relates to a thickener based on guar gum derivatives and a preparation method thereof, in particular to a betaine-type amphoteric thickener based on guar gum derivatives and a preparation method thereof. Background technique At present, viscous fluids are often used as working fluids in offshore drilling, oil production and workover operations, while offshore freshwater resources are scarce and seawater resources are abundant. Therefore, there is a greater need for thickeners suitable for seawater. Natural plant gum guar gum is a non-ionic polymer compound, and its molecular structure is as follows: Guar gum molecular structure It not only has the characteristics of thickening, wall protection, lubrication, drag reduction, etc., but also has good salt resistance and certain calcium resistance, and can improve its ability to reduce water loss and wall protection by moderately cross-linking with high-priced inorganic salts. , At the same t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/035C08B37/00
Inventor 李学军王雪山陈晃陈小华张福铭冯浦涌
Owner CHINA NAT OFFSHORE OIL CORP
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