Illegal cooking oil lubricant and preparation method thereof

A technology of waste oil and lubricants, applied in the direction of chemical instruments and methods, drilling compositions, etc., to achieve significant economic benefits, obvious effects, and reduced lubrication coefficient

Active Publication Date: 2013-04-17
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned problems existing in the existing lubricants for water-based drilling fluids, and to provide a waste oil lubri

Method used

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  • Illegal cooking oil lubricant and preparation method thereof
  • Illegal cooking oil lubricant and preparation method thereof

Examples

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Embodiment 1

[0027] A gutter oil lubricant, comprising the following components in weight percent: 45% to 55% of gutter oil, 0.8% to 1.2% of sodium sulfite, 1.5% to 2.5% of sorbitan oleate, and 0.025% to 0.035% of antioxidant , extreme pressure antiwear agent 0.22%~0.28%, formaldehyde 0.07%~0.09%, caustic soda 1.0%~1.2%, and the balance is water.

[0028] A preferred embodiment of the present invention is that, in the waste oil, the vegetable oil content is 40%-70%, and the animal oil content is 30%-60%. Waste oil in the prior art is applicable, and this is a preferred embodiment, but not limited thereto.

[0029] Another preferred embodiment of the present invention is that the sodium sulfite is 2.0% of the weight of waste oil, which is preferred, but not limited thereto.

[0030] In the present invention, the sorbitan oleate is preferably sorbitan oleate Span-80, and other types of sorbitan oleate can also be selected.

[0031] In the present invention, the antioxidant is preferably an...

Embodiment 2

[0038] This embodiment is basically the same as the above-mentioned embodiment, the main difference is:

[0039] A waste oil lubricant, comprising the following components in percentage by weight: waste oil 40%, sodium sulfite 0.5%, sorbitan oleate 1%, antioxidant 0.02%, extreme pressure antiwear agent 0.2%, formaldehyde 0.05% %, caustic soda 1.0%, and the balance is water.

[0040] A preparation method of waste oil lubricant, comprising the steps of:

[0041] a. Add waste oil into the closed reaction kettle and start stirring. When the temperature of the reaction kettle reaches 50°C, stir and slowly and evenly add sodium sulfite to react for 90 minutes;

[0042] b. Add sorbitan oleate, stir and react for 20 minutes, add water, then adjust the pH value to 8, stir and react for 8 minutes;

[0043] c. Add extreme pressure anti-wear agent, antioxidant and formaldehyde respectively and stir for 8 minutes to prepare waste oil lubricant for water-based drilling fluid.

[0044] In...

Embodiment 3

[0046] The embodiment is basically the same as the above-mentioned embodiment, the main differences are:

[0047] A waste oil lubricant, comprising the following components in percentage by weight: waste oil 60%, sodium sulfite 1.5%, sorbitan oleate 3%, antioxidant 0.04%, extreme pressure antiwear agent 0.3%, formaldehyde 0.1 %, caustic soda 1.2%, and the balance is water.

[0048] A preparation method of waste oil lubricant, comprising the steps of:

[0049] a. Add waste oil into the closed reaction kettle and start stirring. When the temperature of the reaction kettle reaches 45°C, stir and slowly and evenly add sodium sulfite to react for 70 minutes;

[0050]b. Add sorbitan oleate, stir and react for 15 minutes, add water, then adjust the pH value to 7.5, stir and react for 5 minutes;

[0051] c. Add extreme pressure anti-wear agent, antioxidant and formaldehyde respectively and stir for 5 minutes to prepare waste oil lubricant for water-based drilling fluid.

[0052] In...

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Abstract

The invention discloses an illegal cooking oil lubricant and a preparation method thereof. The illegal cooking oil lubricant comprises the following components in percentage by weight: 40%-60% of illegal cooking oil, 0.5%-1.5% of sodium sulfite, 1%-3% of sorbide oleate, 0.02%-0.04% of antioxidants, 0.2%-0.3% of extreme-pressure antiwear agents, 0.05%-0.1% of formaldehyde, 1.0%-1.2% of sodium hydroxide and the balance of water. Through the illegal cooking oil lubricant disclosed by the invention, the problem that torque and friction resistance are reduced through lubrication in the drilling process of a horizontal well is effectively solved, moreover, a new way is provided for the recycling of the illegal cooking oil, and the preparation cost of the lubricant can be reduced.

Description

technical field [0001] The invention relates to a lubricant for water-based drilling fluid and a preparation method thereof, in particular to a waste oil lubricant and a preparation method thereof. Background technique [0002] With the expansion of the scale of horizontal wells (especially branch horizontal wells, ultra-long horizontal wells, gas storage wells, etc.), the horizontal section has been continuously lengthened (the horizontal section of the gas well has been drilled up to 2606m, and the horizontal section of the oil well has been drilled up to 1505m). The horizontal section with geological characteristics passes through a large section of carbonaceous mudstone, which causes a substantial increase in the friction and torque between the drilling tool and the borehole wall, and a sharp increase in lubricant consumption, resulting in a rapid increase in the cost of drilling fluid. Although oil-based drilling fluid or oil-in-oil drilling fluid system can well solve ...

Claims

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Application Information

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IPC IPC(8): C09K8/03
Inventor 黎金明蔺文洁俞浩杰田燕妮赵雷凡帆
Owner BC P INC CHINA NAT PETROLEUM CORP
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