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High-efficient antisticking lubricant for drilling fluid

An anti-sticking lubricant and drilling fluid technology, applied in the directions of drilling compositions, chemical instruments and methods, can solve problems such as good lubrication effect, and achieve the effects of good lubrication effect, low cost and low fluorescence level

Active Publication Date: 2012-08-22
石家庄华莱鼎盛科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These technologies have not given specific instructions on how to make the lubricant lubricate both the hard-to-soft surface (drilling tool to mud cake) and the hard-to-hard surface (drilling tool to rock), and the lubricating effect is good. mentoring program

Method used

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  • High-efficient antisticking lubricant for drilling fluid

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Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: the lubricant of the present invention is to take white oil as main raw material, and oleic acid, methyl oleate are auxiliary materials, and defoamer, extreme pressure agent are five kinds of components that regulator mixes, wherein each component The percentage by weight is: white oil 55%, oleic acid 25%, methyl oleate 13%, defoamer 5%, extreme pressure agent 2%. The above-mentioned defoamer adopts a silicone type defoamer, that is, a silicone oil type defoamer (which can be simethicone). The above-mentioned extreme pressure agent adopts sulfurized olefin. The specific preparation method of the lubricant of the present invention is to take 55 kilograms of white oil, 25 kilograms of oleic acid, 13 kilograms of methyl oleate, 5 kilograms of defoamers, and 2 kilograms of extreme pressure agents, and put them into (conventional) stirring reactors respectively In, stir evenly to get the product. The appearance of the product is light yellow or yellow-green t...

Embodiment 2

[0025] Embodiment 2: The lubricant of the present invention is formed by mixing white oil as the main raw material, oleic acid and methyl oleate as auxiliary materials, and defoamer and extreme pressure agent as regulator.

[0026] Wherein the weight percentage of each component can be: 30% of white oil, 30% of oleic acid, 20% of methyl oleate, 10% of defoaming agent, 10% of extreme pressure agent.

[0027] Wherein the weight percent of each component can also be: white oil 70%, oleic acid 18%, methyl oleate 10%, defoamer 1%, extreme pressure agent 1%.

[0028] Wherein the weight percent of each component can also be: white oil 50%, oleic acid 28%, methyl oleate 12%, defoamer 5%, extreme pressure agent 5%.

[0029] Wherein the weight percentage of each component can also be: white oil 40%, oleic acid 20%, methyl oleate 20%, defoamer 10%, extreme pressure agent 10%. Of course, the weight percentage of each component can also take other values ​​within the range.

[0030] The sp...

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Abstract

A high-efficient antisticking lubricant for drilling fluid has a technical scheme that the lubricant is obtained by mixing five components of white oil which is used as a main raw material, oleic acid and methyl oleate which are used as auxiliary materials, a defoamer and an extreme pressure agent which are used as regulators, wherein the weight percent ranges of the components are 30%-70% of white oil, 18%-30% of oleic acid, 10%-20% of methyl oleate, 1%-10% of defoamer and 1%-10% of extreme pressure agents. The lubricant of the invention has the advantages of extreme pressure lubrication, sticking resistance, less fluorescence grade, and the like, does not cause index change of drilling fluid, has lubrication effect on hard surface to soft surface (drilling tool to mud cake) and hard surface to hard surface (drilling tool to rock), has good lubrication effect, and thus is a good lubricant for polymer drilling fluid systems.

Description

technical field [0001] The invention relates to a treatment agent for drilling fluid, in particular to a high-efficiency anti-seize lubricant for drilling fluid. Background technique [0002] At present, solid and liquid lubricants are usually used in oilfield drilling fluid treatment agents, solid ones such as graphite, plastic pellets, etc., and liquid ones such as liquid lubricants, emulsified paraffin, etc., but solid lubricants are easily added to the drilling fluid. It causes the increase of the solid content of the drilling fluid, which leads to changes in the density, viscosity and other indicators, and the liquid lubricant can only lubricate the hard surface to the soft surface (drilling tool to mud cake), and the hard surface to the hard surface (drilling tool to the mud cake). Rock) lubrication has no effect. CN1329124A discloses a kind of water base mud extreme pressure lubricant, and its composition comprises: 5-20% sulfurized fatty acid or sulfurized oil ester...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/035
Inventor 陈利赵秀平
Owner 石家庄华莱鼎盛科技有限公司
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