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Preparation method of modified polysaccharides lubrication collapse inhibitor

A technology of polysaccharides and inhibitors, which is applied in the field of preparation of cationic alkyl glycosides, can solve the problems of weak anti-slump inhibition and poor lubricity, achieve stable product quality, reduce energy consumption, and improve product lubricity Effect

Inactive Publication Date: 2016-10-26
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method of modified polysaccharide lubricating and anti-slump inhibitors, which overcomes the problems of poor lubricity and weak anti-slump inhibition in the prior art

Method used

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  • Preparation method of modified polysaccharides lubrication collapse inhibitor
  • Preparation method of modified polysaccharides lubrication collapse inhibitor
  • Preparation method of modified polysaccharides lubrication collapse inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]1) Take 70g of glucose and add it to the reactor, start the reactor agitator to stir; 2) Slowly add 9g of 400 mesh quartz sand to the reactor while stirring; 3) Then add 0.5g of alkylbenzene Sulfonic acid and 20g of butanol were kneaded at 80°C for 4 hours, vacuumed to 0.08KPa, and unreacted low-carbon alcohols and moisture were drawn out; 4) Add 35g of octanol to the reactor and add while stirring. Add 0.5g of alkylbenzenesulfonic acid, 0.2g of defoamer emulsified silicone oil, and 0.3g of emulsifier OP-10 intermittently while stirring, and mix them uniformly, then raise the temperature to above 90°C, and control the reaction temperature at 90°C ℃-100℃, the reaction time is 4h, the vacuum degree is 0.09KPa, and the water and butanol are filtered out under reduced pressure, and the butanol is collected in a special container; 5) Add 30g of 3-chloro-1,2 -Propylene glycol, the reaction temperature is 90°C, the reaction time is 5h, the water vapor is filtered out under redu...

Embodiment 2

[0034] Each component of the added raw material is as described in Table 1, and its specific steps are: 1) get 80g of glucose and add in the reactor, start the reactor agitator to stir; 2) slowly stir while stirring the 400 mesh quartz sand of 10g Add it into the reactor for mixing and stirring; 3) Then add 0.8g sulfuric acid and 15g ethanol, knead and react at a temperature of 80°C for 4h, vacuumize to 0.08KPa, and extract unreacted ethanol and moisture; 4) Add to the reaction Add 26g of decanol into the container, add while stirring, and also intermittently add 0.8g of sulfuric acid, 0.3g of defoamer polyoxyethylene polyoxypropanolamine ether and 0.5g of emulsifier OP-7 while stirring, and mix them After uniformity, raise the temperature to above 90°C, and control the reaction temperature at 100°C, the reaction time is 4h, the vacuum degree is 0.09KPa, and the moisture and ethanol are filtered out under reduced pressure, and the ethanol is collected in a special container; 5)...

Embodiment 3

[0036] Each component of the added raw material is described in Table 1, and its specific steps are: 1) get 60g of glucose and add in the reactor, start the reactor stirrer to stir; 2) slowly stir while stirring the 400 mesh quartz sand of 7g again Add to the reactor for mixing and stirring; 3) Then add 0.5g of p-toluenesulfonic acid and 19g of ethylene glycol, knead and react at a temperature of 80°C for 4 hours, vacuumize to 0.08KPa, and draw out unreacted ethylene glycol and water ; 4) add 33g lauryl alcohol to reactor again, add while stirring, also add 0.5g p-toluenesulfonic acid, 0.2g antifoaming agent polydimethylsiloxane and 0.5g emulsifying simultaneously while stirring OP-10, the defoamer and emulsifier are commonly used products on the market. After mixing them evenly, the temperature is raised to above 90°C, and the reaction temperature is controlled at 95°C. The reaction time is 4h, and the vacuum degree is 0.09 Filter out the water and ethylene glycol under reduc...

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Abstract

The invention discloses a preparation method of a modified polysaccharides lubrication collapse inhibitor. The preparation method comprises the following steps: adding glucose in a reactor, then adding inert solid in the reactor, and mixing and stirring; adding an acid catalyst and lower alcohol, carrying out kneading reaction for 4 hours at the temperature of 80 DEG C, and carrying out suction filtering under reduced pressure; then adding high alcohol in the reactor, meanwhile adding an acid catalyst, a defoamer and an emulsifier, heating until the temperature is above 90 DEG C, controlling reaction temperature to be 90-100 DEG C and reaction time to be 3-5 hours, and carrying out suction filtering under reduced pressure; adding 3-chloro-1,2-propylene glycol in the reactor, controlling reaction temperature to be 90-110 DEG C and reaction time to be 3-6 hours, carrying out suction filtering under reduced pressure, and circulating water to reduce the temperature of the reactor to be 60-70 DEG C; adding organic amine as small molecules in the reactor, reacting for 3-5 hours at the temperature of 70-80 DEG C, and carrying out suction filtering under reduced pressure; and heating until the temperature reaches 120-140 DEG C. The preparation method disclosed by the invention is simple in process, stable in product quality and high in collapse inhibition; the problem that environmental pollution is always prevented by an oil lubricant in site can be solved.

Description

technical field [0001] The invention relates to a preparation method of a modified polysaccharide lubrication anti-slump inhibitor, in particular to a preparation method of a cationic alkyl glycoside used as a drilling fluid anti-slump lubricant. Background technique [0002] Alkyl glucoside, also known as polysaccharide, often occurs in the process of oil drilling, and the shale around the wellbore absorbs water and swells, peels off or even collapses, resulting in complex situations such as reaming and tripping. In order to solve this problem, various anti-slump inhibitors are often used on site, such as polymerized alcohol, modified asphalt, polymer polymer coating agent and methyl glucoside. Methyl glucoside is a biodegradable anti-slump inhibitor developed in recent years. The product is mainly dehydrated by natural polysaccharides and methanol to generate methyl glucoside. The molecular structure of this product contains multiple hydroxyl groups, which can effectivel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H15/04C07H1/00C09K8/035
CPCC07H1/00C07H15/04C09K8/035C09K2208/12C09K2208/34
Inventor 罗春芝范山鹰丁磊杨睿
Owner YANGTZE UNIVERSITY
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