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Environmental-friendly lubricating agent for drilling fluid, and preparation method of environmental-friendly lubricating agent

An environment-friendly, drilling fluid technology, applied in the field of drilling lubricants, can solve the problems such as the inability to effectively reduce the friction between the drilling tool and the mud cake clay particles on the well wall, affecting the instrument signal, and the complex composition, preventing sticking. The effect of drilling, simple preparation method and low production cost

Inactive Publication Date: 2018-07-13
四川泓华油气田工程科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing lubricants have the following problems: ①Mineral oils have fluorescence that affects the instrument signal; ②Animal and vegetable oils are not resistant to temperature, easy to ferment, and have unstable performance; ③All have environmental protection problems
[0005] Although the above-mentioned environment-friendly drilling fluid lubricant solves the environmental protection problem, its composition is complicated, the manufacturing cost is high, and it cannot effectively reduce the friction between the drilling tool and the mud cake on the well wall and between the clay particles, so it is easy to appear stuck drill

Method used

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Examples

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preparation example Construction

[0019] The present invention also provides a preparation method of the environment-friendly lubricant for drilling fluid, comprising the steps of: taking oleic acid, long-chain fatty alcohol, organic silicon oil, polyoxyethylene octylphenol ether, sulfuric acid according to the corresponding weight percentage , the raw material of sodium hydroxide; first, mix oleic acid and long-chain fatty alcohol evenly, heat to 50℃~70℃, add sulfuric acid, stir for 3.5h~4.5h, add sodium hydroxide and stir for 0.8h~1.2h, add organic Stir the silicone oil for 0.8h to 1.2h, add polyoxyethylene octylphenol ether and mix evenly.

[0020] In order to shorten the preparation time and ensure product quality, further, mix oleic acid, long-chain fatty alcohol, and polyoxyethylene octylphenol ether evenly, heat to 60°C, add sulfuric acid, stir for 4 hours, add sodium hydroxide and stir for 1 hour, Add silicone oil and stir for 1 hour, add polyoxyethylene octylphenol ether and mix evenly.

Embodiment 1

[0023] Take: 30 parts of oleic acid, 60 parts of long-chain fatty alcohol, mix well, heat to 50°C, add 0.1 part of sulfuric acid, stir for 3.5 hours, add 0.1 part of sodium hydroxide and stir for 1.2 hours, add 8 parts of silicone oil and stir for 1 hour, Add 1.8 parts of polyoxyethylene octylphenol ether and mix evenly. The "environmentally friendly lubricant for drilling fluid" can be prepared.

Embodiment 2

[0025] Take: 42 parts of oleic acid and 44 parts of long-chain fatty alcohol, mix well, heat to 60°C, add 0.1 part of sulfuric acid, stir for 4 hours, add 0.1 part of sodium hydroxide and stir for 1 hour, add 12 parts of silicone oil and stir for 1 hour, add poly 1.8 parts of oxyethylene octylphenol ether, mixed evenly. The "environmentally friendly lubricant for drilling fluid" can be prepared.

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Abstract

The invention discloses an environment-friendly lubricating agent for a drilling fluid and a preparation method of the environment-friendly lubricating agent. The environment-friendly lubricating agent for the drilling fluid has the advantages of environment friendliness, low manufacturing cost, and capability of reducing friction forces between a drill tool and a well wall mud cake as well as between clay particles and reducing resistance. The environment-friendly lubricating agent for the drilling fluid is prepared from the following components in percentage by mass: 30 percent to 42 percentof oleic acid, 44 percent to 60 percent of long-chain fatty alcohol, 5 percent to 15 percent of organic silicone oil, 1 percent to 3 percent of polyoxyethylene octyl phenol ether, 0.1 percent of sulfuric acid, and 0.1 percent of sodium hydroxide. The preparation method comprises the steps of uniformly mixing the oleic acid and the long-chain fatty alcohol, heating, adding the sulfuric acid, stirring, adding the sodium hydroxide for stirring, adding the organic silicone oil for stirring, and adding the polyoxyethylene octyl phenol ether for uniformly mixing. The environment-friendly lubricating agent for the drilling fluid has the advantages of environment friendliness, less pollution, capability of reducing resistance, and benefit to improving the drilling speed and preventing jamming ofa drilling tool.

Description

technical field [0001] The invention relates to the field of drilling lubricants, in particular to an environment-friendly lubricant for drilling fluid. Background technique [0002] It is well known that the extreme pressure lubricant for drilling fluid is an efficient extreme pressure and antiwear agent for mud lubricants and water-based mud lubricants in drilling operations. At present, most of the lubricants used in drilling fluids on the market are mineral oil, mineral bitumen, animal and vegetable oil. [0003] The existing lubricants have the following problems: ① Mineral oils have fluorescence that affects instrument signals; ② Animal and vegetable oils are not resistant to temperature, easy to ferment, and have unstable performance; ③ All have environmental protection problems. [0004] In the prior art, Chinese patent application CN 105505340 A discloses an environment-friendly drilling fluid lubricant and its preparation method, which relates to the technical fie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/03
CPCC09K8/03C09K2208/34
Inventor 刘乾忠
Owner 四川泓华油气田工程科技有限公司
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