High temperature resistant nanometer zirconium boron cross-linking agent and preparation method thereof

A cross-linking agent and high-temperature-resistant technology, which is applied in chemical instruments and methods, drilling compositions, organic chemistry, etc., can solve the problems of high-temperature resistance and high cost of cross-linking agents, and achieve good temperature and shear resistance , low cost, low harm effect

Active Publication Date: 2018-09-04
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a high-temperature-resistant nano-zirconium-boron crosslinking agent and its preparation method, which can effectively solve the problems of high-temperature resistance and high cost of the existing cross-linking agent

Method used

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  • High temperature resistant nanometer zirconium boron cross-linking agent and preparation method thereof
  • High temperature resistant nanometer zirconium boron cross-linking agent and preparation method thereof
  • High temperature resistant nanometer zirconium boron cross-linking agent and preparation method thereof

Examples

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Effect test

Embodiment 1

[0035] A preparation method of a high-temperature-resistant nano zirconium-boron crosslinking agent, comprising the following steps:

[0036] (1) Dissolve 8.65g of sodium lauryl sulfate in 60mL of deionized water and stir to dissolve at 45°C;

[0037] (2) Weigh 4.83g of zirconium oxychloride octahydrate and dissolve it in 30mL of deionized water, stir and dissolve at room temperature; 150mL cyclohexane, magnetically stirred for 2-3h to obtain a mixed solution;

[0038] (3) Move the obtained mixed solution to a 500mL hydrothermal reaction kettle with polytetrafluoroethylene lining, add 60mL, 4mol / l sodium hydroxide solution, react at 100°C for 24h, alternately use ethanol and deionized water After washing 3 times, according to the theoretical yield, a 0.5wt% nano zirconium dioxide emulsion was prepared, and ultrasonicated for 30 minutes to make it uniformly dispersed;

[0039] (4) Take 50ml of 0.5wt% nano-zirconia emulsion in a three-necked flask, add 25mL of glycerol therein...

Embodiment 2

[0041] A preparation method of a high-temperature-resistant nano zirconium-boron crosslinking agent, comprising the following steps:

[0042] (1) Dissolve 12g of sodium lauryl sulfate in 120mL of deionized water, stir and dissolve at 45°C;

[0043] (2) Weigh 8.4g of zirconium oxychloride octahydrate and dissolve it in 60mL of deionized water, stir and dissolve at room temperature; 300mL cyclohexane, magnetically stirred for 2-3h to obtain a mixed solution;

[0044] (3) Move the obtained mixed solution to a 500mL hydrothermal reaction kettle with polytetrafluoroethylene lining, add 60mL, 4mol / l sodium hydroxide solution, react at 100°C for 24h, alternately use ethanol and deionized water After washing 3 times, according to the theoretical yield, a 0.5wt% nano zirconium dioxide emulsion was prepared, and ultrasonicated for 30 minutes to make it uniformly dispersed;

[0045] (4) Take 60ml of 0.5wt% nano-zirconia emulsion in a three-necked flask, add 30mL of glycerol therein, st...

Embodiment 3

[0047] A preparation method of a high-temperature-resistant nano zirconium-boron crosslinking agent, comprising the following steps:

[0048] (1) Dissolve 16.2g of sodium lauryl sulfate in 90mL of deionized water and stir to dissolve at 45°C;

[0049] (2) Weigh 6.75g of zirconium oxychloride octahydrate and dissolve it in 45mL of deionized water, stir and dissolve at room temperature; 225mL cyclohexane, magnetically stirred for 2-3h to obtain a mixed solution;

[0050](3) Move the obtained mixed solution to a 500mL hydrothermal reaction kettle with polytetrafluoroethylene lining, add 60mL, 4mol / l sodium hydroxide solution, react at 100°C for 24h, alternately use ethanol and deionized water After washing 3 times, according to the theoretical yield, a 0.5wt% nano zirconium dioxide emulsion was prepared, and ultrasonicated for 30 minutes to make it uniformly dispersed;

[0051] (4) Take 50ml of 0.5wt% nano-zirconia emulsion in a three-necked flask, add 25mL of glycerol therein,...

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Abstract

The invention discloses a high temperature resistant nanometer zirconium boron cross-linking agent and a preparation method thereof. The preparation method of the cross-linking agent is characterizedin that (1) a lauryl sodium sulfate solution and a zirconium oxychloride octahydrate solution are respectively prepared; (2) the zirconium oxychloride octahydrate solution is dropwise added into the lauryl sodium sulfate solution; then, cyclohexane is added; next, the mixed solution is put into a reaction kettle; a sodium hydroxide solution is added; reaction is performed for 24h to obtain a nanometer zirconium dioxide emulsion; (3) glycerol, borax, beta-diketone and triethanolamine are sequentially added into the nanometer zirconium dioxide emulsion; reaction is performed under the conditionthat the pH value is 10, so that the nanometer zirconium boron cross-linking agent is prepared. The nanometer zirconium boron cross-linking agent prepared by the method has excellent temperature resistant and shearing resistant performance; the cost is low; the gel breaking and flowback are easy.

Description

technical field [0001] The invention belongs to the technical field of preparation of cross-linking agents for oil fields, and in particular relates to a high-temperature-resistant nano zirconium-boron cross-linking agent and a preparation method thereof. Background technique [0002] After decades of exploitation of oil and gas resources, most high-permeability oil and gas fields have entered the late stage of exploitation. In order to improve formation permeability and increase oil and gas well productivity, formation stimulation measures are essential. As the most effective formation stimulation measure for deep low-permeability tight reservoirs, fracturing has attracted more and more attention and research at home and abroad. Crosslinking agent is one of the main determinants of the success of fracturing construction. [0003] At present, the commonly used cross-linking agents in oil fields are organoboron cross-linking agents, but the existing organoboron cross-linkin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/68C09K8/62C07F19/00
Inventor 陈馥杨洋贺杰罗米娜何坤忆陈奇向春林廖子涵李环王婉露卜涛何雪梅
Owner SOUTHWEST PETROLEUM UNIV
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