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A kind of anti-high temperature and anti-saturated salt biomass lubricant and preparation method thereof

A biomass and high-temperature-resistant technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of drilling fluid foaming, decomposition failure, and difficulty in dispersing, and achieve rapid drilling, good stability, and low price Effect

Active Publication Date: 2022-03-15
中石化石油工程技术服务有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, some drilling fluids are mixed with crude oil, white oil and other mineral oils, which is not environmentally friendly; some drilling fluids decompose and fail when the pH is higher than 10; some make the drilling fluid foam; some are difficult to disperse in salt water, etc.

Method used

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  • A kind of anti-high temperature and anti-saturated salt biomass lubricant and preparation method thereof
  • A kind of anti-high temperature and anti-saturated salt biomass lubricant and preparation method thereof
  • A kind of anti-high temperature and anti-saturated salt biomass lubricant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Add 1mol lauryl alcohol, 0.15mol ethyl chloride, 0.15mol sodium hydroxide and 0.25mol 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid catalyst into a reaction kettle with stirring, condensation and heating devices , stir to mix well. React under the conditions of 60°C and 200rpm for 16 hours, drop to room temperature, obtain ethyl lauryl ether after purification, and the structural formula of ethyl lauryl alcohol is:

[0032]

[0033] Terminal groups not given are methyl groups.

[0034] The mass concentration of 60 parts by weight of lauryl ether, the mass concentration of 37 parts by weight is the aqueous solution of potassium oleate of 10%, the sorbitan monooleate of 2 parts by weight and the high-viscosity sodium carboxymethyl cellulose (CMC) of 1 part by weight -HV) was added into a stirring tank, stirred at a temperature of 40° C. and a speed of 1200 r / min for 3 hours, and mixed uniformly to obtain a biomass lubricant.

Embodiment 2

[0036] Add 1mol lauryl alcohol, 0.15mol chlorobutane, 0.15mol sodium hydroxide and 0.25mol 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid catalyst into a reaction kettle with stirring, condensation and heating devices , stir to mix well. React under the conditions of 80°C and 300rpm for 16 hours, drop to room temperature, and obtain butyl lauryl ether after purification. The structural formula of butyl lauryl alcohol is:

[0037]

[0038] Terminal groups not given are methyl groups.

[0039] The mass concentration of 80 parts by weight of butyl alcohol, 13 parts by weight of potassium oleate aqueous solution, 5 parts by weight of propylene glycol monostearate and 2 parts by weight of high-viscosity sodium carboxymethyl cellulose (CMC -HV) was added into a stirring tank, and stirred at a temperature of 60° C. at a speed of 1800 r / min for 1 hour to make it evenly mixed to obtain a biomass lubricant.

Embodiment 3

[0041] Add 1mol lauryl alcohol, 0.15mol chlorohexane, 0.15mol sodium hydroxide and 0.25mol 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid catalyst into a reaction kettle with stirring, condensation and heating devices , stir to mix well. React under the conditions of 100°C and 300rpm for 16 hours, drop to room temperature, obtain lauryl alcohol hexyl ether after purification, and the structural formula of said lauryl alcohol hexyl ether is:

[0042]

[0043] Terminal groups not given are methyl groups.

[0044]With the lauryl hexyl ether of 70 weight parts, the mass concentration of 25 weight parts is the potassium oleate aqueous solution of 20%, the diacetyl tartrate monoglyceride of 4 weight parts and the high viscosity sodium carboxymethyl cellulose (CMC) of 1 weight part -HV) was added into the stirring tank, stirred at a temperature of 50° C. and a speed of 1500 r / min for 2 hours, and mixed uniformly to obtain a biomass lubricant.

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Abstract

The invention provides a high temperature resistant and anti-saturated salt biomass lubricant, which, in parts by weight, comprises: 60-80 parts of lauryl alcohol alkyl ether; 13-37 parts of potassium oleate solution; 2-5 parts of emulsification agent; 1 to 2 parts of tackifier. In the lubricant provided by the present invention, the lauryl alcohol alkyl ether and the potassium oleate solution are synergistic, and the two cooperate with each other, so that the obtained lubricant has the effect of resisting high temperature and saturated salt, and the lubricant provided by the present invention Green, non-toxic, easy to biodecompose, especially suitable for oil and gas wells with deep reservoir burial, high temperature and high pressure, and suitable for special well operations such as extended reach wells, inclined wells and horizontal wells. The present invention also provides the preparation method of the high-temperature-resistant and saturated-salt biomass lubricant described in the above technical solution.

Description

technical field [0001] The invention relates to the technical field of oil and gas well exploitation, in particular to a high temperature and saturated salt biomass lubricant and a preparation method thereof. Background technique [0002] Nowadays, with the expanding field of oil exploration and development, the drilling strata are deepening, the drilling methods are constantly being refurbished, and the difficulty of drilling is gradually increasing. There are more and more wells with special conditions such as deep wells, ultra-deep wells, directional wells, horizontal wells, extended-reach wells, slim hole wells, and high-density long open-hole wells. The drilling speed needs to be greatly increased. The use of lubricants for drilling fluids can solve these complex problems . [0003] As the probability of drilling high temperature, high pressure, gypsum rock and various complex formations is getting higher and higher, it is generally required that the lubricant not only...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/035
CPCC09K8/035C09K2208/34
Inventor 单海霞王中华徐勤李彬张晓刚周亚贤
Owner 中石化石油工程技术服务有限公司
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