Concentrated solution for compatible hydraulic support and preparation method of concentrated solution

A hydraulic support and compatible technology, applied in lubricating compositions, petroleum industry and other directions, can solve the problems of cumbersome replacement work, affecting the downhole environment, waste of resources, etc., achieving good stability, solving emulsion replacement, and reliable liquid supply. Effect

Active Publication Date: 2021-11-02
CCTEG CHINA COAL RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the replacement of high-water-containing hydraulic fluid is relatively cumbersome and takes a certain amount of time. At the same time, it causes a waste of resources and affects the downhole environment to a certain extent.

Method used

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  • Concentrated solution for compatible hydraulic support and preparation method of concentrated solution
  • Concentrated solution for compatible hydraulic support and preparation method of concentrated solution
  • Concentrated solution for compatible hydraulic support and preparation method of concentrated solution

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preparation example Construction

[0030] Such as figure 1 As shown, the embodiment of the present invention provides a method for preparing a concentrated solution for a compatible hydraulic support, which includes the following steps:

[0031] a. Mix and stir water, alkali and organic acid to obtain a chelating dispersant containing nitrogen atoms;

[0032] b. Add modified olive oil water-soluble lubricant, polyether type nonionic emulsifier, polybasic weak acid type pH regulator and water to the chelating dispersant containing nitrogen atoms in the step a, mix and stir, A dispersion mixture was obtained.

[0033] c. Add carboxylate-type antirust agent and inorganic salt-type metal passivator to the dispersed mixed solution in step b, mix and stir to obtain antirust mixed solution.

[0034] d. Add bacteriostatic agent and fluoropolyether-modified polysiloxane to the antirust mixture in step c, mix, stir and age to obtain a concentrated solution for compatible hydraulic supports.

[0035] According to the p...

Embodiment 1

[0042] Water, monoethanolamine and polyacrylic acid (average molecular weight 20,000) were mixed according to the mass ratio of 11:3:2, the temperature was 100°C, the stirring time was 120min, and the rotation speed was 60r / min to obtain a chelating dispersant containing nitrogen atoms.

[0043] Mix caprylic acid, azelaic acid, ternary polycarboxylic acid and monoethanolamine in a mass ratio of 3:5:3:4, stir at 80°C for 60min, and rotate at 60r / min to obtain a carboxylate-type rust inhibitor.

[0044] Water-soluble sodium molybdate, sodium silicate and sodium tetraborate are mixed in a mass ratio of 5:3:6 to obtain an inorganic salt type metal passivator.

[0045] The mass percent content of each raw material in the concentrated liquid for compatible hydraulic support is: 4% of modified olive oil water-soluble lubricant, 2% of polyether type nonionic emulsifier, 5% of chelating dispersant containing nitrogen atoms, Multivariate weak acid pH regulator 2%, carboxylate type rust ...

Embodiment 2

[0049] Mix water, diethanolamine and polymethacrylic acid (average molecular weight 40,000) according to the mass ratio of 9:2:2, the temperature is 90°C, the stirring time is 90min, and the rotation speed is 90r / min to obtain a chelate dispersion containing nitrogen atoms. agent.

[0050] Mix nonanoic acid, azelaic acid, ternary polycarboxylic acid and diethanolamine in a mass ratio of 6:10:5:8, stir at 100°C for 90 minutes, and rotate at 90 r / min to obtain a carboxylate-type rust inhibitor .

[0051] Mix water-soluble sodium molybdate, sodium silicate and sodium tetraborate in a mass ratio of 1:1:2 to obtain an inorganic salt type metal passivator.

[0052] The mass percent content of each raw material in the concentrated liquid for compatible hydraulic support is: 20% of modified olive oil water-soluble lubricant, 8% of polyether type nonionic emulsifier, 15% of chelating dispersant containing nitrogen atoms, Multivariate weak acid pH adjuster 8%, carboxylate type rust in...

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Abstract

The invention discloses a concentrated solution for a compatible hydraulic support, which comprises 4-20% of a modified olive oil water-soluble lubricant, 1-8% of a polyether nonionic emulsifier, 5-15% of a chelating dispersant containing nitrogen atoms, 2-8% of a polybasic weak acid pH value regulator, 5-12% of a carboxylate antirust agent, 7-15% of an inorganic salt metal deactivator, 3-6% of a bacteriostatic agent, 0.01-0.1% of fluoropolyether modified polysiloxane, and the balance of water by mass, wherein the chelating dispersant containing nitrogen atoms is obtained by mixing and reacting water, alkali and organic acid according to the mass ratio of (9-11): (1-3): (2-4). By adding the synthesized efficient dispersing agent and adjusting the proportion of the lubricant, the emulsifier and the dispersant in the concentrated solution for the hydraulic support, the obtained diluent can be compatible with the specified concentrated solution or emulsified oil products, the stability of the mixed solution is good, and the problem of emulsion replacement of coal mines and support maintenance factories is solved.

Description

technical field [0001] The invention belongs to the field of transmission media for coal mine hydraulic supports, in particular to a concentrated liquid for compatible hydraulic supports, and in particular to a preparation method for the concentrated liquid for compatible hydraulic supports. Background technique [0002] The transmission medium of the hydraulic support plays a vital role in the stability and reliability of the coal mine hydraulic support, and is known as the "blood" of the hydraulic support. The transmission medium of hydraulic support is usually divided into two categories: emulsified oil and concentrated liquid. Among them, the concentrated liquid of hydraulic support is suitable for hydraulic equipment such as hydraulic support and external injection single hydraulic prop. It can also play a role in lubrication, Anti-rust and other functions, providing effective protection for the hydraulic system. The concentrated solution for hydraulic supports is gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M173/02C10M177/00C10N30/12C10N30/06C10N30/16C10N30/04C10N30/18C10N40/08
CPCC10M173/02C10M177/00C10M2215/042C10M2209/084C10M2207/127C10M2207/123C10M2207/126C10M2201/08C10M2201/102C10M2201/087C10M2207/401C10M2229/04
Inventor 白飞飞孙刚王玉超谢恩情刘鲤粽沈栋李硕林叶雷于维雨杭智军王岩磊吕春荣薛永升孔令坡翟晶赵昕楠王文亮于坤罗海平
Owner CCTEG CHINA COAL RES INST
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