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Preparation of high temperature resistant lubricant for drilling liquid by animal plant oil

An animal and vegetable oil and animal oil technology, which is applied in the field of oil drilling lubricants, can solve the problems of changing the lubricant properties, drilling lubricity, low fluorescence, high temperature resistance and salt resistance, etc., and achieves strong lubricating ability, good compatibility, high performance good film effect

Inactive Publication Date: 2008-04-09
孝英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem that existing lubricants cannot simultaneously meet the overall requirements of improving drilling lubricity, pollution-free, low fluorescence, high temperature resistance and salt resistance, and develops a drilling fluid made from animal and vegetable oils and a new production process. Anti-high temperature lubricant, which changes the performance of the lubricant, so that on the basis of satisfying the lubrication and anti-seize performance, it improves the high temperature resistance to above 180°C, and has the characteristics of environmental protection, salt resistance and low fluorescence

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The anti-high temperature lubricant for preparing drilling fluids from animal and vegetable oils of the present invention is prepared from the following parts by weight of waste grease, ethanolamine, diethylene glycol, sulfur, oil-soluble resin and graphite powder, and the specific preparation method is as follows:

[0014] a. Esterification reaction: mix 50~70 parts of waste grease, 3~10 parts of ethanolamine and 5~20 parts of diethylene glycol for esterification reaction. The reaction temperature is controlled at 110~130℃, and the reaction time is 1.5~3. Hours;

[0015] b. Vulcanization reaction: add 1 to 3 parts of sulfur to the reactant prepared in step a, the reaction temperature is controlled at 140-160°C, and the reaction time is 3-6 hours;

[0016] c. Add 2 to 5 parts of pine ester and 10 to 30 parts of graphite powder to the reactant prepared in step b, mix and stir uniformly to obtain a high temperature resistant lubricant for drilling fluid.

Embodiment 2

[0018] The animal and vegetable oil of the present invention is prepared by the following steps:

[0019] a. Esterification reaction: mix 50 parts of vegetable oil leftovers, 3 parts of ethanolamine and 5 parts of diethylene glycol for esterification reaction, the reaction temperature is controlled at 110~120℃, and the reaction time is 1.5 hours;

[0020] b. Vulcanization reaction: add 1 part of sulfur to the reactant prepared in step a, the reaction temperature is controlled at 140-150°C, and the reaction time is 3 hours;

[0021] c. Add 2 parts of pine ester and 10 parts of graphite powder to the reactant prepared in step b, mix and stir evenly, to obtain a high temperature resistant lubricant for drilling fluid.

Embodiment 3

[0023] The animal and vegetable oil of the present invention is prepared by the following steps:

[0024] a. Esterification reaction: mix 70 parts of animal fat, 10 parts of ethanolamine and 20 parts of diethylene glycol to carry out the esterification reaction, the reaction temperature is controlled at 120-130°C, and the reaction time is 3 hours;

[0025] b. Vulcanization reaction: add 3 parts of sulfur to the reaction material prepared in step a, the reaction temperature is controlled at 150-160°C, and the reaction time is 6 hours;

[0026] c. Add 5 parts of pine ester and 30 parts of graphite powder to the reactant prepared in step b, mix and stir uniformly, to obtain a high temperature resistant lubricant for drilling fluid.

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Abstract

The invention provides liquid temperature-resistant lube for drilling made from animal and vegetable oils and fats. 50-70 weight portions of deserted oils and fats, 3-10 portions of Ethanolamine, 5-20 portions of Diethylene glycol are mixed to do esterified reaction. 1-3 portions of sulfur are added to do sulfuration reaction. The reaction product is added with 2-5 portions of oil-soluble resin and 10-30 portions of graphite powder and then is mixed and stirred well. The liquid temperature-resistant lube is obtained. The liquid temperature-resistant lube for drilling made from the animal and vegetable oils and fats is characterized by reasonable compatibility, no pollution and no disturbance to the quality of the lubricant logging for prospecting well, etc. The invention has wide applicability and is the lube with high efficiency in the process of prospecting well and various complex well constructions. In particular, the invention is little poisonous as lube for marine well exploration and is completely qualified for the discharge standard.

Description

Technical field [0001] The invention belongs to a lubricant for petroleum drilling, and particularly relates to a high-temperature resistant lubricant for drilling fluid made of animal and vegetable oil scraps, which is suitable for deep wells, ultra-deep wells, highly inclined directional wells, horizontal wells, and offshore drilling. Background technique [0002] Differential pressure sticking accidents often occur during oil drilling. The most effective and commonly used technological measure to prevent differential pressure sticking is to add lubricants to the drilling fluid to improve the lubricity of the drilling fluid and mud cake surface to prevent sticking. The purpose of drilling. The first lubricant used was crude oil or its manufactured products (such as diesel and white oil). Its advantage is that it is convenient to use and can meet the requirements of lubrication and seizure to a certain extent. But its shortcomings are: first, the miscibility with water-based dri...

Claims

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Application Information

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IPC IPC(8): C09K8/035
Inventor 孝英
Owner 孝英
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