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Organic thickening solvent, application and preparation method of organic thickening solvent and oil-based drilling fluid

An oil-based drilling fluid and organic solvent technology, applied in the field of oil-based drilling fluid, can solve the problems of high cost, complicated and cumbersome steps, poor slurry making ability, etc., and achieve the effects of high viscosity increasing ability, less dosage, and lower energy consumption

Inactive Publication Date: 2016-11-16
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the increasing awareness of environmental protection, oil-based drilling fluids used in offshore drilling and some land drilling mostly use non-aromatic and environmentally friendly base oil phases. At the same time, non-polar alkane solvents are often used as base oil solvents in lubricating greases and low-polarity paints. However, the existing commercial organic soils have poor pulping properties in these non-polar alkane media, and generally more To achieve the desired viscosity and shear force by means of high temperature, high shear and polar activators, the steps are complicated and costly

Method used

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  • Organic thickening solvent, application and preparation method of organic thickening solvent and oil-based drilling fluid
  • Organic thickening solvent, application and preparation method of organic thickening solvent and oil-based drilling fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 0.765g sepiolite and 0.135g dioctadecyl dimethyl ammonium chloride respectively, disperse sepiolite and dioctadecyl dimethyl ammonium chloride in 29.10g of white oil, seal and place Stir at a constant temperature in an 80°C water bath for 30 minutes, and stir evenly to prepare a mixed system with a mass fraction of the sum of sepiolite and dioctadecyldimethylammonium chloride of 3%, wherein the mass fraction of sepiolite is 2.55%; The mass fraction of dioctadecyl dimethyl ammonium chloride is 0.45%.

[0024] Viscosity Test at High Temperature:

[0025] The organic solvent of the commercial organoclay that content is 3% by weight is as comparative example 1, and white oil is used as comparative example 2, respectively tests the viscosity of the product of comparative example 1, comparative example 2 and embodiment 1 at high temperature 70 ℃, viscosity curve like figure 1 As shown, compared with the product of Example 1 of the present application, the same amount ...

Embodiment 2

[0028] Weigh 0.255g sepiolite and 0.045g dioctadecyl dimethyl ammonium chloride respectively, disperse sepiolite and dioctadecyl dimethyl ammonium chloride in 29.70g white oil, and seal and place in 80 Stir in a water bath at a constant temperature for 30 minutes at ℃, stir evenly, and prepare a mixed system in which the mass fraction of the sum of sepiolite and dioctadecyldimethylammonium chloride is 1%; the dioctadecyldimethylammonium chloride The mass fraction is 0.15%, and the mass fraction of sepiolite is 0.85%.

Embodiment 3

[0030] Take by weighing 0.51g sepiolite and 0.09g ditetradecyl dimethyl ammonium bromide respectively, sepiolite and ditetradecyl dimethyl ammonium bromide are dispersed in 29.40g natural gas to liquids (GTL), Finally, the sample was sealed and placed in a water bath at 80°C for 30 minutes at a constant temperature to obtain a mixed system in which the mass fraction of the sum of sepiolite and dioctadecyldimethylammonium bromide was 2%; ditetradecyldimethylammonium bromide The mass fraction of ammonium bromide is 0.3%, and the mass fraction of sepiolite is 1.7%.

[0031] Viscosity Test at High Temperature:

[0032] Using white oil as comparative example 3, test the viscosity of the products of comparative example 3, embodiment 2 and embodiment 3 at a high temperature of 70°C respectively, and the viscosity curve is as follows figure 2 As shown, when the amount of sepiolite is 1 or 2% by weight, the organic solvent can still be effectively thickened, and the effect is obvious...

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Abstract

This application discloses an organic thickening solvent, application and preparation method of the organic thickening solvent and an oil-based drilling fluid; the organic thickening solvent includes inorganic fibers and a cationic surfactant, wherein in the organic thickening solvent, the inorganic fibers account for 1-5% by weight and the cationic surfactant accounts for 0.08-2.5% by weight; the inorganic fibers are selected from sepiolite and / or palygorskite; the cationic surfactant is double-chain quaternary ammonium salt having alkyl chain carbon count of 10 and above; the organic thickening solvent remains good in tackifying effect at high temperature.

Description

technical field [0001] The embodiments of the present application relate to but are not limited to a thickened organic solvent, its application and preparation method, and oil-based drilling fluid. Background technique [0002] With the increasing awareness of environmental protection, oil-based drilling fluids used in offshore drilling and some land drilling mostly use non-aromatic and environmentally friendly base oil phases. At the same time, non-polar alkane solvents are often used as base oil solvents in lubricating greases and low-polarity paints. However, the existing commercial organic soils have poor pulping properties in these non-polar alkane media, and generally more To achieve the desired viscosity and shear force by means of high temperature, high shear and polar activators, the steps are complicated and costly. Contents of the invention [0003] The application provides a thickened organic solvent, its application and preparation method and oil-based drilli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/03C09K8/34
CPCC09K8/03C09K8/34C09K2208/08
Inventor 刘雪婧刘刚李振邦耿铁罗健生苗海龙赵春花侯瑞雪李超孙德军张厉
Owner CHINA NAT OFFSHORE OIL CORP