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Nanometer lubricant for drilling fluid and preparation method of nanometer lubricant

A drilling fluid and lubricant technology, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve the problems of reducing drilling friction and torque, and achieve low friction and torque and large specific surface area , Highlight the effect of extreme pressure resistance

Inactive Publication Date: 2018-11-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of nano-lubricant for drilling fluid and preparation method thereof, overcome the defective of existing drilling fluid lubricant, add nano-lubricant of the present invention in drilling fluid, improve the lubricity of drilling fluid, reduce Friction and torque during drilling

Method used

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preparation example Construction

[0031] A preparation method of nano lubricant for drilling fluid is:

[0032] A. Put the linear α-olefin in a stirred tank, and control the temperature of the tank at 25-30°C;

[0033] B, add surfactant in proportion, stir 4h;

[0034] C, add nano silicon dioxide in proportion, stir 2h;

[0035] D. Add sulfurized fatty acid ester in proportion and stir for 2 hours;

[0036] E. Add water in proportion, the water adding speed is ≤2m 3 / h, continue to stir for 4 hours until a uniform water-in-oil emulsion is formed, which is the nano lubricant for drilling fluid.

[0037] Embodiments of the present invention are as follows:

Embodiment 1

[0039] The parts by weight and components of lubricant for drilling fluid are as follows in the present embodiment:

[0040] 87 parts by weight of linear alpha-olefins;

[0041] 3 parts by weight of nano silicon dioxide, the particle size of which is set between 20nm and 50nm;

[0042] 5 parts by weight of sulfurized fatty acid ester;

[0043] Span 80 1.4 parts by weight;

[0044] 0.6 parts by weight of alkylphenol polyoxyethylene ether;

[0045] 3 parts by weight of water.

[0046] Its preparation method and steps are as follows:

[0047](1) Put the linear α-olefin in a stirred tank, and control the temperature of the tank at 25-30°C;

[0048] (2) Add 1.4 parts by weight of Span 80 and 0.6 parts by weight of alkylphenol polyoxyethylene ether, and stir for 4 hours;

[0049] (3) Add 3 parts by weight of nano-silica, and stir for 2 hours;

[0050] (4) Add 5 parts by weight of sulfurized fatty acid ester and stir for 2 hours;

[0051] (5) Add 3 parts by weight of water, a...

Embodiment 2

[0054] 84 parts by weight of linear alpha-olefins;

[0055] 5 parts by weight of nano silicon dioxide, its particle size is set at 20nm~50nm;

[0056] 3 parts by weight of sulfurized fatty acid ester;

[0057] Span 80 1.8 parts by weight;

[0058] 1.2 parts by weight of alkylphenol polyoxyethylene ether;

[0059] 5 parts by weight of water.

[0060] Its preparation method and steps are as follows:

[0061] (1) Put the linear α-olefin in a stirred tank, and control the temperature of the tank at 25-30°C;

[0062] (2) Add 1.8 parts by weight of Span 80 and 1.2 parts by weight of alkylphenol polyoxyethylene ether, and stir for 4 hours;

[0063] (3) Add 5 parts by weight of nano-silica, and stir for 2 hours;

[0064] (4) Add 3 parts by weight of sulfurized fatty acid ester and stir for 2 hours;

[0065] (5) Add 5 parts by weight of water, and the speed of adding water is ≤2m 3 / h, and continue to stir for 4 hours until a uniform water-in-oil emulsion is formed, which is th...

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Abstract

The invention discloses a nanometer lubricant for a drilling fluid and a preparation method of the nanometer lubricant in the petroleum industry. The lubricant is added to the drilling fluid to improve the lubricity of the drilling fluid, and then the friction and the torque in the drilling process are reduced. The nanometer lubricant for the drilling fluid comprises linear alpha-olefin, nanosilicon dioxide, sulfide fatty acid ester, a surfactant and water, the preparation method comprises putting the linear alpha-olefin into a stirring kettle, controlling the temperature of the kettle to 25-30 DEG C, then proportionally adding the surfactant, stirring for 4 hours, proportionally adding the nanosilicon dioxide, stirring for 2 hours, then proportionally adding the sulfide fatty acid ester,stirring for 2 hours, proportionally adding water, controlling the water addition speed to be lower than or equal to 2 m<3> / h, and continuously stirring for 4 hours until an even water-in-oil emulsionis formed, wherein the water-in-oil emulsion is the nanometer lubricant for the drilling fluid.

Description

technical field [0001] The invention relates to additives in drilling fluids in the petroleum industry, in particular to a nano lubricant for drilling fluids and a preparation method thereof. Adding the lubricant in drilling fluids can improve the lubricating performance of drilling fluids and reduce friction and resistance during drilling. torque. Background technique [0002] Drilling fluid is mainly composed of water, bentonite and other treatment agents. Drilling fluid lubricant is one of the most important treatment agents in drilling fluid. Its main function is to reduce the frictional resistance between the drilling tool and the well wall and reduce the occurrence of stuck Risk of drilling accidents. Especially in the construction of directional wells and horizontal wells, as the inclination angle increases, the contact area between the drilling tool and the well wall, as well as the frictional resistance and torque resistance continue to increase. At this time, it i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/035C09K8/14B82Y30/00
CPCB82Y30/00C09K8/035C09K8/14C09K2208/34
Inventor 侯业贵戴荣东田启忠隋旭强于少卿陈丽媛付法栋王锴王健惠伟
Owner CHINA PETROLEUM & CHEM CORP
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