Lubricant and preparation method thereof

A technology of lubricant and defoaming agent, applied in the field of lubricant and preparation, can solve the problems of viscosity of drilling fluid, increase of shear force, influence on oil and gas formation of logging staff, influence on well slurry performance, etc., and achieve low foaming performance. , Well slurry performance has no adverse effect, the effect of low fluorescence level

Inactive Publication Date: 2015-09-02
SUZHOU XIANGYUAN SPEICAL FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The general lubricants currently used, due to their fluorescence, have a great impact on geological mud logging during use in exploration wells and some key wells, seriously affecting mud logging workers to discover new oil and gas layers in mud logging; The agent has foaming properties, which affects the performance of the well mud, increases the viscosity and shear force of the drilling fluid, and is not conducive to the maintenance and treatment of the drilling fluid on site

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 25 parts of 150SN and 60 parts of glycerin fatty acid ester into the reaction kettle, raise the temperature to 50°C, stir at high speed for 0.5h, slowly add 10 parts of Span-80, stir at high speed for 0.5h, raise the temperature to 70°C, slowly add 5 parts The antifoaming agent silicone continued to stir for 0.5h, and cooled to obtain a low-foaming and low-fluorescence lubricant for drilling fluid 1 # .

Embodiment 2

[0020] Add 30 parts of 150SN and 56 parts of propylene glycol monooleate into the reaction kettle, raise the temperature to 80°C, stir at high speed for 0.5h, slowly add 8 parts of Tween-80, stir at high speed for 0.5h, raise the temperature to 100°C, slowly add 6 part of antifoaming agent modified silicone and continue to stir for 0.5h, and cool down to obtain low-foaming and low-fluorescence lubricant for drilling fluid 2 # .

Embodiment 3

[0022] Add 30 parts of 60SN and 56 parts of propylene glycol monooleate into the reaction kettle, raise the temperature to 70°C, stir at high speed for 0.5h, slowly add 8 parts of MOA-4, stir at high speed for 0.5h, raise the temperature to 90°C, slowly add 6 part of antifoaming agent glycerol polyether and continue to stir for 0.5h, then cool to obtain low-foaming and low-fluorescence lubricant for drilling fluid 3 # .

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Abstract

The invention discloses a lubricant for drilling fluids, which is composed of the following components in percentage by mass: 20-40% of base oil, 40-60% of fatty acid ester, 5-10% of surfactant and 3-10% of defoaming agent. The preparation method of the lubricant comprises the following steps: adding the base oil and fatty acid ester into a reaction kettle, heating to 50-80 DEG C, stirring at high speed for 0.5-1 hour, slowly adding the surfactant, stirring at high speed for 0.5-1 hour, heating to 70-100 DEG C, adding the defoaming agent, continuing stirring for 0.5-1 hour, and cooling.

Description

technical field [0001] The invention belongs to the field of fine chemicals, in particular to a lubricant and a preparation method. Background technique [0002] Lubricant is a lubricating medium used to reduce frictional resistance and slow down wear. Lubricants can also play a role in cooling, cleaning and preventing pollution. In order to improve the lubricating performance, suitable additives can be added to some lubricants. Drilling fluid is the circulating flushing medium used in the hole during the drilling process. Drilling fluid, also known as drilling flushing fluid, can be divided into clear water, mud, clay-free flushing fluid, emulsion, foam and compressed air according to its composition. Clear water is the earliest drilling fluid, it does not need to be treated, it is easy to use, and it is suitable for areas with complete rock formations and sufficient water sources. Mud is a widely used drilling fluid. It is mainly suitable for unstable rock formations w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/035
CPCC09K8/035C09K2208/34
Inventor 周建颜玉荣
Owner SUZHOU XIANGYUAN SPEICAL FINE CHEM
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