Lubricant for drilling fluid and preparation method thereof

A lubricant and drilling fluid technology, applied in the field of drilling fluid additives and its preparation, can solve the problems of geological logging influence, low fluorescence, low foaming rate, etc., and achieve easy industrial production, simple preparation method, lubricating good performance

Inactive Publication Date: 2021-07-30
巴州三元石油助剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing lubricants for drilling fluid have the following problems: high foaming rate requires a large amount of defoaming agent to defoam; there is a phenomenon of fermentation odor, which has adverse effects on the environment; it is easy to cause the viscosity of drilling fluid to increase, which is not conducive to drilling fluid on-site Maintenance; high level of fluorescence affects geological logging
Therefore, the progress of drilling development has been greatly affected, and it is necessary to develop a drilling fluid lubricant with high performance, low foaming rate, non-toxic, and low fluorescence.

Method used

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  • Lubricant for drilling fluid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A lubricant for drilling fluid is prepared from the following components by weight: 350 g of long-chain fatty acid, 1500 g of light diesel oil and 30 g of stearate.

[0019] In this embodiment, the long-chain fatty acid is a mixture of oleic acid, palmitic acid and stearic acid in a ratio of 8:1:1.

[0020] In this embodiment, the light diesel oil is 5 # Diesel and 0 # Diesel is mixed in a ratio of 1:2.

[0021] In this embodiment, the stearate is a mixture of aluminum stearate and barium stearate in a ratio of 5:2.

[0022] The preparation method of above-mentioned lubricant for drilling fluid comprises the following steps:

[0023] (1) Add 350g of long-chain fatty acid and 200g of light diesel into the reaction kettle, and mechanically stir to fully mix;

[0024] (2) Add 30 g of stearate into the reaction system of step (1) in three batches under stirring, then raise the temperature to 80°C, and continue stirring for 1 h;

[0025] (3) Add 1300 g of light diesel o...

Embodiment 2

[0030] A lubricant for drilling fluid is prepared from the following components by weight: 1600kg of long-chain fatty acid, 7000kg of light diesel oil and 150kg of stearate.

[0031] In this example, the long chain fatty acid is oleic acid.

[0032] In this embodiment, the light diesel oil is 0 # diesel fuel.

[0033] In this example, the stearate is aluminum stearate.

[0034] The preparation method of above-mentioned lubricant for drilling fluid comprises the following steps:

[0035] (1) Add 1,600kg of long-chain fatty acids and 1,000kg of light diesel into the reactor, and mechanically stir to fully mix;

[0036] (2) Add 150kg of stearate into the reaction system of step (1) in five batches under stirring, then raise the temperature to 90°C, and continue to stir and react for 1.5 h;

[0037] (3) Add 6000kg of light diesel oil to the product obtained in step (2), then raise the temperature to 60°C, and continue stirring for 2.5 hours to prepare the lubricant for drillin...

Embodiment 3

[0039] A lubricant for drilling fluid is prepared from the following components by weight: 600kg of long-chain fatty acid, 2700kg of light diesel oil and 40kg of stearate.

[0040] In this embodiment, the long-chain fatty acid is a mixture of oleic acid and stearic acid in a ratio of 15:2.

[0041] In this embodiment, the light diesel oil is 0 # Diesel and -10 # Diesel is mixed in a ratio of 3:2.

[0042] In this embodiment, the stearate is a mixture of aluminum stearate, magnesium stearate and barium stearate in a ratio of 4:1:1.

[0043] The preparation method of above-mentioned lubricant for drilling fluid comprises the following steps:

[0044] (1) Add 600kg of long-chain fatty acids and 450kg of light diesel into the reaction kettle, and mechanically stir to fully mix;

[0045] (2) Add 40kg of stearate into the reaction system of step (1) in two batches under stirring, then raise the temperature to 100°C, and continue to stir and react for 2 h;

[0046] (3) Add 2250k...

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Abstract

The invention discloses a lubricant for drilling fluid and a preparation method thereof. The lubricant for drilling fluid is prepared from long-chain fatty acid, light diesel oil and stearate, the long-chain fatty acid is one or a mixture of at least two of oleic acid, palmitic acid and stearic acid in any proportion, the light diesel oil is one or a mixture of at least two of 5 # diesel oil, 0 # diesel oil and-10 # diesel oil in any proportion, and the stearate is one or a mixture of at least two of aluminum stearate, magnesium stearate, calcium stearate and barium stearate in any proportion. The lubricant for the drilling fluid has the advantages of being good in lubricating property, low in fluorescence level, low in foaming rate and good in compatibility with various common drilling fluid additives, the preparation method of the lubricant is simple, the production cost is low, and industrial production is easy.

Description

technical field [0001] The invention relates to an auxiliary agent for drilling fluid and a preparation method thereof, in particular to a lubricant for drilling fluid and a preparation method thereof. Background technique [0002] Drilling fluid lubricant is an important chemical treatment agent for drilling fluid. Its function is to improve the lubricity of drilling fluid, reduce the frictional resistance between the well wall and drilling tools, drilling tools and casing, and reduce the rotation of the drill string. Torque and run-in resistance, thereby reducing the accidents of stuck pipe. The existing lubricants for drilling fluid have the following problems: high foaming rate requires a large amount of defoaming agent to defoam; there is a phenomenon of fermentation odor, which has adverse effects on the environment; it is easy to cause the viscosity of drilling fluid to increase, which is not conducive to drilling fluid on-site Maintenance; high level of fluorescence...

Claims

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Application Information

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IPC IPC(8): C09K8/035
CPCC09K8/035C09K2208/34
Inventor 赵立勋赵阳范晓瑜
Owner 巴州三元石油助剂有限公司
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