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Bio-oil lubricant for drilling wells and preparation method of bio-oil lubricant

A bio-oil and lubricant technology, applied in drilling compositions, chemical instruments and methods, etc., can solve the problem of vegetable oil thermal oxidation stability and hydrolysis stability, poor low temperature fluidity, poor biodegradability of mineral lubricants, polyether Lubrication performance limitation and other issues to achieve the effect of reducing sticking accidents, good low temperature fluidity and stable performance

Inactive Publication Date: 2013-01-02
CNPC XIBU DRILLING ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a bio-oil lubricant for drilling and a preparation method thereof, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve frequent drill stuck accidents, serious environmental pollution caused by poor biodegradability of mineral lubricants, and vegetable oil Thermal oxidation stability, hydrolytic stability and low temperature fluidity are poor when used as lubricating oil, the lubricating performance of polyether is limited when used as lubricating oil, and the price of polyol grease is expensive when used as lubricating oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: A bio-oil lubricant for drilling consists of the following components in parts by weight: 100 parts of base oil, and 1 to 15 parts of surfactant.

[0013] Embodiment 1 can be further optimized or / and improved according to actual needs:

[0014] According to needs, the base oil can be biodiesel or fatty acid methyl ester; or the base oil is a mixture of biodiesel and mineral white oil; or the base oil is a mixture of fatty acid methyl ester and mineral white oil; or the base oil is mineral white oil and vegetable oil mixture.

[0015] According to needs, when the base oil in the bio-oil lubricant for drilling is selected from vegetable oil, the vegetable oil is rapeseed oil or sunflower oil or cottonseed oil or soybean oil or castor oil.

[0016] According to needs, the surfactants in bio-oil lubricants for drilling are Span-80, Tween-80, OP-10, RN + (CH 3 )2R'X - (R=C 12 Alkyl to C 16 Alkyl, R'=CH 3 Or benzyl, X=halogen) one or more than one mixture...

Embodiment 2

[0018] The preparation method of the bio-oil lubricant for drilling is carried out according to the following steps: add 100 parts of fatty acid methyl ester and 1 part of Span-80 into the reactor in parts by weight, and stir the reaction at a temperature of 30°C to 40°C After 2 hours, after the reaction was finished, the bio-oil lubricant for drilling was obtained after cooling.

[0019] Evaluation of Lubrication Performance of Bio-oil Lubricants:

[0020] In parts by weight: 6 parts of bentonite and 0.3 parts of soda ash are added to 100 parts of tap water to form a base slurry, and the lubricity of the base slurry is measured by an extreme pressure lubrication instrument, and then added to 100 parts of the mixed base slurry 1 part of the bio-oil lubricant prepared by Example 2, utilize the extreme pressure lubrication instrument to measure the lubricity of the base slurry containing the bio-oil lubricant, put the base slurry containing the bio-oil lubricant into the roller ...

Embodiment 3

[0024] The preparation method of the bio-oil lubricant for drilling is carried out according to the following steps: 100 parts of biodiesel, 5 parts of Span-80, and 3 parts of Tween-80 are added to the reactor in parts by weight, and the temperature is 50 ° C. The mixture was stirred and reacted for 3 hours, and after the reaction was completed, the bio-oil lubricant for drilling was obtained after cooling.

[0025] Evaluation of Lubrication Performance of Bio-oil Lubricants:

[0026] In parts by weight: 6 parts of bentonite and 0.3 parts of soda ash are added to 100 parts of tap water to form a base slurry, and the lubricity of the base slurry is measured by an extreme pressure lubrication instrument, and then added to 100 parts of the mixed base slurry 1 part of bio-oil lubricant prepared by example 3, utilize the extreme pressure lubrication instrument to measure the lubricity of the base slurry containing bio-oil lubricant, put the base slurry containing bio-oil lubricant ...

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Abstract

The invention relates to the technical field of well drilling liquid production methods of oil well drilling engineering and relates to a bio-oil lubricant for drilling wells and a preparation method of the bio-oil lubricant. The bio-oil lubricant comprises the following components of, by weight, 100 parts of base oil and 1-15 parts of surface active agents. The preparation method of the bio-oil lubricant includes adding the base oil and the surface active agents with required quantities to a reactor, stirring the mixture for reaction at the temperature of 30-90 DEG C for 2-5 hours, and cooling the mixture after the reaction is finished to obtain the bio-oil lubricant. The prepared bio-oil lubricant is high in lubrication capacity, stable in performance at the high temperature of 120 DEG C, good in liquidity at low temperatures, non-toxic, easy to degrade biologically, small in influence on environment and environment-friendly; and the bio-oil lubricant is capable of meeting requirements of exploration wells, high inclination and extended reach wells and offshore drilling wells, effectively reducing sticking accidents and reducing comprehensive costs of well drilling engineering.

Description

technical field [0001] The invention relates to the technical field of drilling fluid production methods in petroleum drilling engineering, and relates to a bio-oil lubricant for drilling and a preparation method thereof. Background technique [0002] Drilling fluid is a working fluid that can carry cuttings, cool and lubricate drill bits, balance formation pressure, protect wellbore stability and protect oil layers from damage during drilling. Its performance directly affects drilling efficiency and downhole safety. And cost control is an important part of drilling engineering technology. Drilling fluid lubricant is an important chemical treatment agent for drilling fluid. Its function is to improve the lubricity of drilling fluid, reduce the friction between the well wall and drilling tools, reduce the rotation torque of the drill string and the resistance to tripping, thereby reducing sticking. drilling accidents. The lubricants currently in use are mostly formulated wi...

Claims

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Application Information

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IPC IPC(8): C09K8/035
Inventor 黄治中张兴国李跃明郑义平王凤军
Owner CNPC XIBU DRILLING ENG
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