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Biomimetic liquid lubricating agent for drilling fluid and preparation method thereof

A drilling fluid and lubricant technology, which is applied in the field of petroleum drilling aids and liquid lubricants for drilling fluid, can solve the problems of good biodegradability, low reduction rate, high cost, etc., and achieve good biodegradability and reduce friction coefficient, the effect of reducing the adhesion coefficient

Active Publication Date: 2017-05-10
石家庄华莱鼎盛科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is mainly obtained from long-chain organic acid oily agents, synthetic fat-type oily agents, emulsifiers, and base oil emulsification. Its cost is high, and it is mainly used in high-density well mud. Although this product can reduce the viscosity of mud cake at the same time Coefficient of adhesion and coefficient of friction, but the reduction rate is not high
[0007] The above technologies have not given specific instructions on how to make the lubricant for drilling fluid reduce the friction coefficient of the drilling fluid itself and the adhesion coefficient of the mud cake at the same time, and the low fluorescence does not affect the geological logging, and its biodegradability is good. mentoring program

Method used

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  • Biomimetic liquid lubricating agent for drilling fluid and preparation method thereof
  • Biomimetic liquid lubricating agent for drilling fluid and preparation method thereof
  • Biomimetic liquid lubricating agent for drilling fluid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Example 1: The bionic liquid lubricant for drilling fluids of the present invention is made of raw materials with the following weight ratios:

[0046]

[0047] The above-mentioned emulsifier is a combination of triethanolamine and aluminum stearate, the weight ratio of triethanolamine and aluminum stearate is 1:2, and the defoaming agent is dimethyl silicone oil (or polydimethylsiloxane can be used Or polyoxypropylene oxide ethylene glycerol ether).

[0048] The preparation method of the biomimetic liquid lubricant for drilling fluid includes the following process steps: ① Weigh the raw materials oleic acid, emulsifier, glycerol, and propylene oxide according to the above-mentioned weight ratio, and add each raw material (in order) to the reaction In the kettle, the raw materials are fully mixed to obtain the mixture; ②The mixture is then subjected to the esterification process (esterification reaction), the esterification temperature is 200℃, the esterification time is 1h,...

Embodiment 2

[0049] Example 2: The bionic liquid lubricant for drilling fluid of the present invention is made of the following raw materials with the following weight ratio:

[0050]

[0051] The above-mentioned emulsifier is a combination of triethanolamine and aluminum stearate, the weight ratio of triethanolamine and aluminum stearate is 2:1, and the antifoaming agent is polydimethylsiloxane (or dimethyl silicone oil can be used). Or polyoxypropylene oxide ethylene glycerol ether).

[0052] The preparation method of the biomimetic liquid lubricant for drilling fluid includes the following process steps: ① Weigh the raw materials oleic acid, emulsifier, glycerol, and propylene oxide according to the above-mentioned weight ratio, and add each raw material (in order) to the reaction In the kettle, the raw materials are fully mixed to obtain the mixture; ②The mixture is then subjected to the esterification process (esterification reaction), the esterification temperature is 250℃, the esterifica...

Embodiment 3

[0053] Example 3: The bionic liquid lubricant for drilling fluids of the present invention is made of the following raw materials in weight ratio:

[0054]

[0055] The above-mentioned emulsifier is a combination of triethanolamine and aluminum stearate, the weight ratio of triethanolamine and aluminum stearate is 1:1, and the antifoaming agent is polyoxypropylene oxide ethylene glyceride (or polydimethyl dimethyl ether). Silicone or Dimethicone).

[0056] The preparation method of the biomimetic liquid lubricant for drilling fluid includes the following process steps: ① Weigh the raw materials oleic acid, emulsifier, glycerol, and propylene oxide according to the above-mentioned weight ratio, and add each raw material (in order) to the reaction In the kettle, fully mix the raw materials to obtain the mixture; ②Then the mixture is subjected to the esterification process (esterification reaction), the esterification temperature is 220 ℃, the esterification time is 1.5h, and the reac...

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Abstract

The invention relates to a biomimetic liquid lubricating agent for drilling fluid and a preparation method thereof. The biomimetic liquid lubricating agent is prepared from the following raw materials including oleic acid, emulsifiers, glycerol, epoxy propane and antifoaming agents, wherein the emulsifiers are one or several materials selected from triethanolamine, aluminum stearate and span-80. The preparation method comprises the following technical steps of weight the raw materials of the oleic acid, the emulsifiers, the glycerol and the epoxy propane; adding the raw materials into a reaction kettle so that the raw materials are sufficiently mixed, and a mixed material is obtained; performing an esterification process on the mixed material at the esterification temperature of 200 to 250 DEG C for the esterification time being 1 to 3h; performing cooling to obtain an esterification product; performing an emulsification process on the esterification product at the emulsification temperature of 80 to 100 DEG C for the emulsification time being 1 to 2h; lowering the temperature of a product after completing the emulsification process; adding the antifoaming agents so that the materials are sufficiently and uniformly mixed; discharging the materials after the temperature is lowered to room temperature. The biomimetic liquid lubricating agent can resist high temperature being 200 DEG C or higher; the friction coefficient of the drilling fluid can be reduced; the adhesion coefficient of the drilling fluid can also be reduced; the fluorescence grade is low.

Description

Technical field [0001] The invention relates to a liquid lubricant for drilling fluid, which belongs to petroleum drilling aids, in particular to a bionic liquid lubricant for drilling fluid. The invention also relates to a preparation method of the bionic liquid lubricant for drilling fluid. Background technique [0002] In oil and gas drilling engineering, especially in the process of ultra-deep wells, highly deviated wells, horizontal wells and cluster wells, the rotation resistance and pulling resistance of the drill string will be greatly increased. In order to reduce the frictional resistance between the drilling tool and the well wall and casing, and reduce the wear of the drill string, it has become an urgent problem in drilling engineering. [0003] The lubricating performance of drilling fluid usually includes two aspects: the lubricating performance of mud cake and the lubricating performance of drilling fluid itself. The friction coefficient of drilling fluid and mud ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/035C09K8/22
CPCC09K8/035C09K8/22C09K2208/34
Inventor 陈利赵秀平
Owner 石家庄华莱鼎盛科技有限公司
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