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Preparation method of coupling phenolic resin used for drilling fluid

A technology of phenolic resin and drilling fluid, which is applied in the direction of drilling compositions, chemical instruments and methods, and can solve problems such as low salt resistance, unstable fluid loss resistance to high temperature and high pressure, and low temperature resistance of fluid loss reducers. , to achieve the effect of improving the bonding effect and improving the filter reduction effect

Active Publication Date: 2011-11-16
SICHUAN ZHENGRONG IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the temperature resistance of the existing fluid loss reducers is generally not high, generally not exceeding 160°C. The existing technology mainly uses sulfonated phenolic resin as the fluid loss reducer. The fluid loss against high temperature and high pressure is unstable, and the salt resistance is poor Low, especially in the case of large differences in geological structure, fluid loss control agents with lower fluid loss and higher salt resistance are required

Method used

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  • Preparation method of coupling phenolic resin used for drilling fluid
  • Preparation method of coupling phenolic resin used for drilling fluid
  • Preparation method of coupling phenolic resin used for drilling fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] according to figure 1 According to the process flow, 100 parts of phenol and 130 parts of formaldehyde are sequentially added to the reaction kettle with a stirrer in the reflux cooler according to the mass ratio, and under the action of 2 parts of hydrochloric acid, heat at 100°C and stir for 45 minutes. Then add 15 parts of sodium hydroxide and 170 parts of sodium metabisulfite and heat at 100°C for 1.5 hours, then add 75 parts of N-2-(aminoethyl)-3-aminopropyltrimethoxysilane and then heat at 100°C to continue After 3 hours of reaction, the material is discharged to obtain a coupled phenolic resin, which is then made into water or powder for packaging.

Embodiment 2

[0020] according to figure 1 According to the mass ratio, 100 parts of phenol and 130 parts of formaldehyde are sequentially added to the reaction kettle with a reflux cooler with a stirrer, and under the action of 2 parts of p-toluenesulfonic acid, heat at 95°C and stir the reaction 50 minutes, then add 15 parts of sodium hydroxide and 170 parts of sodium metabisulfite and heat at 90°C for 2 hours, then add 75 parts of N-(βaminoethyl)-γ-aminopropylmethyl-dimethoxysilane Reheat at 100°C and continue to react for 3 hours, then discharge the material to obtain the coupled phenolic resin, which is then made into water or powder for packaging.

Embodiment 3

[0022] according to figure 1 According to the mass ratio, 100 parts of phenol and 130 parts of formaldehyde are sequentially added to the reaction kettle with a reflux cooler with a stirrer, and under the action of 2 parts of oxalic acid, heat at 100°C and stir for 35 minutes. Then add 15 parts of sodium hydroxide and 170 parts of sodium metabisulfite and heat at 105°C for 2 hours to react, then add 75 parts of 3-aminopropyltriethoxysilane and heat at 105°C to continue the reaction for 3 hours, then discharge. The coupled phenolic resin is obtained, and then made into water or powder for packaging.

[0023] Measured according to the standard method, the coupling phenolic resin obtained in the above examples was made into the corresponding water and powder respectively and compared with the sulfomethyl phenolic resin (SMP) type II water powder for index comparison. The comparison of the measured index parameters is shown in Table 2:

[0024]

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Abstract

The invention relates to a preparation method of coupling phenolic resin used for a drilling fluid, and the method comprises the following steps: successively adding 100 parts of phenol and 60 parts to 200 parts of formaldehyde according to mass ratio into a reaction vessel with a backflow cooler of a mixer, heating to 80 - 100 DEG C, stirring and reacting for 30 - 50 minutes under the effect of 1 - 3 parts of A type catalyst, then adding 10 parts - 20 parts of B type catalyst and 150 parts - 200 parts of sulfonate to heat at the temperature range of 90 DEG C - 105 DEG C to react for 1 - 2 hours, then adding 50 - 100 parts of aminosilane coupling type high-molecular polymer, and reheating to the temperature range of 90 DEG C - 105 DEG C for continuing the reaction for 2 - 4 hours, and then discharging the material to obtain coupling phenolic resin. According to the invention, when coupling phenolic resin is taken as a fluid loss agent with heat and salinity tolerance used for the drilling fluid, the high-temperature high-pressure filtration loss is reduced by 8 - 15%, the cloud point salinity is raised by 10 - 20% than that of common sulfonation phenolic resin on the key index tests, and the quality of the filter cake is raised so that the filter cake is thin and dense.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a method for preparing a salt-resistant, temperature-resistant, and fluid loss reducing agent for drilling fluid in the petroleum drilling industry, that is, a method for preparing a coupled phenolic resin for drilling fluid. Background technique [0002] Borehole wall instability during drilling has always been the main factor affecting the smooth progress of drilling. The site usually solves this problem by adding fluid loss control agents to the drilling fluid. However, the temperature resistance of the existing fluid loss reducers is generally not high, generally not exceeding 160°C. The existing technology mainly uses sulfonated phenolic resin as the fluid loss reducer. The fluid loss against high temperature and high pressure is unstable, and the salt resistance is poor Low, especially in the case of large differences in geological structure, fluid loss control agents with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/28C08G8/10C09K8/035
Inventor 王刚毅
Owner SICHUAN ZHENGRONG IND
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