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Lubricant and preparation method thereof

A technology for lubricants and dispersants, applied in the field of lubricants and their preparation, can solve problems such as restricting applications, and achieve the effects of reducing complex accidents, improving drilling efficiency, and strong adsorption force

Active Publication Date: 2022-05-06
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

The aforementioned instabilities of vegetable oils greatly limit their application as environmentally friendly lubricants

Method used

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  • Lubricant and preparation method thereof
  • Lubricant and preparation method thereof
  • Lubricant and preparation method thereof

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preparation example Construction

[0051] In another aspect, an embodiment of the present invention provides a method for preparing a lubricant, and the method for preparing a lubricant includes the following steps:

[0052] Step 1, preparing modified vegetable oil.

[0053] Wherein, the preparation of the modified vegetable oil involved in step 1 includes: epoxidizing the vegetable oil and hydrogen peroxide to generate epoxidized vegetable oil;

[0054] In the presence of an organic acid, the ring-opening reaction of the epoxidized vegetable oil and the anhydride corresponding to the organic acid is carried out to obtain the modified vegetable oil.

[0055] Step 2. Put the modified vegetable oil in the container, stir and heat to the first set temperature, add the extreme pressure anti-wear agent into the container while stirring, and stir evenly.

[0056] Wherein, the first set temperature is 45°C-50°C, for example, 45°C, 46°C, 47°C, 48°C, 49°C, 50°C and so on.

[0057] By dispersing the extreme pressure an...

Embodiment 1

[0063] This embodiment provides a lubricant, which comprises: modified soybean oil, molybdenum trisulfide and sodium dodecylbenzenesulfonate, wherein the mass ratio of modified soybean oil to molybdenum trisulfide is 1:0.02 ; The mass ratio of molybdenum trisulfide to sodium dodecylbenzenesulfonate is 1:0.6.

[0064] The preparation method of modified vegetable oil is as follows: make soybean oil and hydrogen peroxide in equimolar ratio undergo epoxidation reaction under the catalysis of formic acid to generate epoxidized soybean oil; Modified soybean oil and acetic anhydride were subjected to ring-opening reaction at 65°C to obtain modified soybean oil.

[0065] The preparation method of the lubricant is as follows: put the modified soybean oil in the container, stir and heat to 50°C, add molybdenum trisulfide into the container while stirring, and stir evenly (continue to stir for 30 minutes); continue to add ten Sodium dialkylbenzene sulfonate, and heated to 55°C, stirred ...

Embodiment 2

[0067] This embodiment provides a lubricant, which comprises: modified palm oil, molybdenum trisulfide and sodium dodecylsulfonate, wherein the mass ratio of modified palm oil to molybdenum trisulfide is 1:0.02; The mass ratio of molybdenum trisulfide to sodium dodecylsulfonate is 1:0.4.

[0068] The preparation method of modified palm oil is as follows: make the palm oil of equimolar ratio and hydrogen peroxide carry out epoxidation reaction under the catalysis of formic acid, generate epoxidized palm oil; Epoxidized palm oil and propionic anhydride undergo a ring-opening reaction at 65°C to obtain modified palm oil.

[0069] The preparation method of the lubricant is as follows: put the modified palm oil in the container and heat it to 45° C., add molybdenum trisulfide into the container while stirring, and stir evenly (continue to stir for 30 minutes); continue to add ten Sodium dialkyl sulfonate, and heated to 50°C, stirred evenly (continue to stir for 20 minutes), to obt...

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Abstract

The invention discloses a lubricant and a preparation method thereof, and belongs to the technical field of well drilling. The lubricant comprises modified vegetable oil, an anti-wear reagent at extreme pressure and a dispersing agent, wherein the modified vegetable oil is prepared by the following method: performing epoxidation reaction on vegetable oil and hydrogen peroxide under the catalysis of formic acid to generate epoxidized vegetable oil; and in the presence of organic acid, carrying out ring-opening reaction on the epoxidized vegetable oil and anhydride corresponding to the organic acid to obtain the modified vegetable oil. The modified vegetable oil is synergistically compounded with an anti-wear reagent at extreme pressure and a dispersing agent, and the formed lubricant is environment-friendly, non-toxic, easy to decompose, free of fluorescence, excellent in adsorbability, high-temperature stability and anti-wear capability at extreme pressure, good in compatibility with the drilling fluid, capable of better improving the lubricating capability of the water-based drilling fluid, and capable of improving the drilling performance of the drilling fluid. Complex accidents can be reduced to a great extent, and drilling efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of drilling, in particular to a lubricant and a preparation method thereof. Background technique [0002] With the continuous development of petroleum exploration and development, the complex situations faced by drilling engineering are becoming more and more prominent. Extended reach horizontal wells, directional wells, long open hole deep wells, and wells with complex structures are gradually increasing. Drilling fluids with high lubricating properties are usually used to deal with the above various Complex well conditions. [0003] In the related art, commonly used lubricants include: vegetable oil-based lubricants, wherein the main component of vegetable oil is triglyceride, non-toxic and pollution-free, the degradation rate can reach more than 95% in the natural environment, and the lubricating performance of vegetable oil Good, good viscosity-temperature characteristics, high flash point, is the main ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/10C10N30/08
CPCC10M169/045C10M2201/066C10M2219/044C10M2207/401
Inventor 王晓军关键高玮景烨琦孙云超孔栋梁徐路韩龙黄志强姚如钢鲁政权余婧蒋立洲王磊李晨光王西贵马俊刘畅闻丽甄鹏鹏王丽君张颖苹刘宏宇隋程刘宁刘熔冰吕楠杨德仁杨超程东
Owner BC P INC CHINA NAT PETROLEUM CORP
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