Organic boron crosslinker, preparation method and application thereof

A technology of cross-linking agent and organoboron, applied in the field of organoboron cross-linking agent and its preparation, can solve the problems of high price, unenvironmental protection, difficult transportation, etc., and achieve the effect of improving temperature tolerance and optimizing adjustment

Inactive Publication Date: 2018-07-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the preparation process and use steps of the existing organoboron crosslinking agents are complex and cumbersome, difficult to transport, expensive and not environmentally friendly, which limits the wide application of organoboron crosslinking agents

Method used

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  • Organic boron crosslinker, preparation method and application thereof
  • Organic boron crosslinker, preparation method and application thereof
  • Organic boron crosslinker, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Mix 15.0g methanol and 0.5mL toluene evenly and heat to 40°C, add 5.0g 2,2'-diamino-N-methyldiethylamine, 5.0g triethylamine, 2.0g triethanolamine and 20.0g boric acid Trimethyl ester, reacted at 60°C for 6 hours, controlled the temperature to 65°C, then added 2.0g orthosilicate and reacted for 2 hours, then added 5.0g mannitol and 5.0g glycerin, and stirred for 2 hours. The product was cooled to obtain a clear solution, and 40.0 g of methanol was added to obtain an organoboron crosslinking agent product.

Embodiment 2

[0045] Heat 25.0g ethylene glycol to 40°C, add 5.0g 2,2'-diamino-N-methyldiethylamine, 10.0g trimethylamine, 2.0g triethanolamine and 20.0g trimethyl borate, 90°C React for 4 hours, control the temperature to 100° C., add 2.0 g of orthosilicate and react for 2 hours, then add 5.0 g of isopropanol and 5.0 g of n-butanol, and stir for 2 hours. The product was cooled to obtain a clear solution, and 40.0 g of methanol was added to obtain an organoboron crosslinking agent product.

Embodiment 3

[0047] Mix 20.0g glycerol and 1.0mL dichloromethane evenly and heat to 60°C, add 5.0g 2,2'-diamino-N-methyldiethylamine, 5.0g triethylamine, 2.0g triethanolamine and 20.0g of trimethyl borate was reacted at 50°C for 6 hours, the temperature was controlled to 65°C, then 2.0g of orthosilicate was added to react for 10min, then 20.0g of methanol was added, and the reaction was stirred for 2 hours. The product was cooled to obtain a clear solution, and 40.0 g of methanol was added to obtain an organoboron crosslinking agent product.

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PUM

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Abstract

The invention provides an organic boron crosslinker, which includes, by weight, 15-50 parts of organic alcohol, 3-8 parts of boric acid ester, 2-5 parts of organosilicate, 3-10 parts of an organic amine compound, and 5-10 parts of an optional non-proton organic solvent. The organic boron crosslinker provided by the invention has good shearing resistance, delayed crosslinking capacity and temperature resistance under a low concentration, and has wide application prospects. The invention also provides a preparation method and application of the organic boron crosslinker.

Description

technical field [0001] The invention belongs to the field of petroleum development, and relates to an organic boron crosslinking agent and its preparation method and application. Background technique [0002] In the fracturing construction of oil and gas development, in order to realize the functions of fracture creation and sand carrying, the fracturing fluid should have higher viscosity and viscoelasticity, and in order to reduce costs and damage, it is also required to have a lower concentration of thickener , At the same time can complete sanding. Thickeners and crosslinking agents are commonly used in fracturing fluids to form a crosslinking system to increase viscosity and improve elasticity. By optimizing the ratio of thickening agent and crosslinking agent, the rheological indicators of fracturing fluid, such as viscosity and viscoelasticity, can meet the technological requirements of fracture creation and sand carrying. It is usually necessary to apply chemical cr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/68
CPCC09K8/685C09K8/887
Inventor 崔佳张汝生赵梦云苏长明苏建政张锁兵刘松郑承纲史爱萍
Owner CHINA PETROLEUM & CHEM CORP
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