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A modified sulfonated phenolic resin and a drilling mud treatment agent containing it

A technology of sulfonated phenolic resin and sulfonating agent, which is applied in the direction of drilling compositions, chemical instruments and methods, and can solve the problems of fluid loss control and rheology, high temperature resistance, salt resistance and anti-slump ability poor performance, poor use effect in medium-deep well sections, etc., to achieve excellent fluid loss resistance, excellent high temperature resistance, and excellent fluid loss reduction effects

Active Publication Date: 2018-08-31
河南省遨太化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the sulfonated phenolic resin prepared according to the existing method is used in high-temperature, high-pressure and high-salinity environments, there are defects such as low use efficiency, poor inhibition, and poor use effect in medium-deep well sections, high temperature resistance, salt resistance and collapse prevention. The ability is poor, and it can no longer meet the needs of high-temperature and high-pressure filtration loss control and rheology of brine and saturated brine drilling fluids under ultra-high temperature conditions

Method used

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  • A modified sulfonated phenolic resin and a drilling mud treatment agent containing it
  • A modified sulfonated phenolic resin and a drilling mud treatment agent containing it

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] (1) Add 2.6g of phenol, 1.0g of catechol, and 2.0g of formaldehyde in sequence in a reaction kettle equipped with a reflux device, raise the temperature to 99°C, add 0.03g of 20% hydrochloric acid in four times, react for 10 minutes, and the solution becomes milky;

[0076] (2) 0.8g of 20% sodium hydroxide solution was added thereto to adjust the pH value of the reaction solution, then 1.5g of sulfonating agent was added, heated to 99°C, and reacted under reflux for 90 minutes, the reaction solution became clear; , the composition of sulfonating agent is: water 18g, formaldehyde 36.5g, sodium metabisulfite 45.5g;

[0077] (3) Add 1.5g of sulfonating agent, 0.06g of formaldehyde, 0.05g of polymethylmethacrylate nanoparticles, 0.03g of γ-methacryloxypropyltrimethoxysilane to it for the second time, at 99°C Reflux reaction for 90 minutes;

[0078] (4) Add 1.5 g of sulfonating agent for the third time, and reflux reaction at 99° C. for 90 minutes;

[0079] (5) Add 1.5 g ...

Embodiment 2

[0083] (1) Add 3.0 g of phenol, 1.1 g of hydroquinone, and 2.3 g of formaldehyde in sequence in a reaction kettle equipped with a reflux device, raise the temperature to 102° C., add 0.05 g of 20% hydrochloric acid in four times, react for 10 minutes, and the solution becomes milky;

[0084] (2) Add 1.2 g of 20% sodium hydroxide solution to it to adjust the pH value of the reaction solution, then add 1.6 g of sulfonating agent, heat to 102° C., react under reflux for 90 minutes, and the reaction solution becomes clear; , the composition of sulfonating agent is: water 18g, formaldehyde 36.5g, sodium metabisulfite 45.5g;

[0085] (3) Add 1.6g of sulfonating agent, 0.07g of formaldehyde, 0.06g of polystyrene nanoparticles, 0.04g of γ-methacryloxypropyltrimethoxysilane to it for the second time, and reflux at 102°C for 90 minute;

[0086] (4) Add 1.6 g of sulfonating agent for the third time, and reflux at 102°C for 90 minutes;

[0087] (5) Add 1.6 g of sulfonating agent for th...

Embodiment 3

[0092] (1) 18g of the sulfonated phenolic resin prepared in Example 1 and 10g of sodium hydroxypropyl sulfonate were mixed under stirring, and reacted at 55°C for 15 minutes;

[0093] (2) Add 8g oleamide hydroxysultaine and 6g trifluoropropylmethylcyclotrisiloxane to the product of step (1), stir evenly;

[0094] (3) Preparation of polyacrylamide nano-titanium dioxide composites

[0095] Add 15g of acrylamide, 2g of nano-titanium dioxide, 5g of sodium bicarbonate and 100ml of water into the reactor, and stir evenly; then add 0.05g of ammonium persulfate, react for 2 hours, then raise the temperature to 90°C for 2 hours; after the reaction, The product is dried to obtain a polyacrylamide nano-titanium dioxide composite material;

[0096] (4) adding the polyacrylamide nano-titanium dioxide composite material prepared in step (3) to the product of step (2) to obtain a drilling mud treatment agent.

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Abstract

The invention provides a modified sulfonated phenolic resin and a drilling well slurry processing agent comprising the same. The modified sulfonated phenolic resin is prepared by the following steps: (1) adding 1.8 to 3.2 parts of phenol, 0.9 to 1.1 parts of dihydric phenol, and 1.5 to 3 parts of formaldehyde, heating to a temperature of 97 to 105 DEG C, adding 0.02 to 0.06 part of hydrochloric acid (20%), and carrying out reactions for 10 to 15 minutes; (2) adding 0.5 to 1.3 parts of sodium hydroxide solution (20%) into the reaction system, then adding 1.4 to 1.7 parts of sulfonating agent, heating to a temperature of 97 to 105 DEG C, and carrying out reactions for 80 to 100 minutes; (3) adding 1.4 to 1.7 parts of sulfonating agent for a second time, adding 0.02 to 0.09 part of formaldehyde, 0.03 to 0.07 part of organic polymer nano particle, and 0.01 to 0.05 part of silane coupling agent, and carrying out reactions for 80 to 100 minutes at a temperature of 97 to 105 DEG C; (4) adding 1.4 to 1.7 parts of sulfonating agent for a third time, and carrying out reactions for 80 to 100 minutes at a temperature of 97 to 105 DEG C; (5) adding 1.4 to 1.7 parts of sulfonating agent for a fourth time, and carrying out reactions for 80 to 100 minutes at a temperature of 97 to 105 DEG C; (6) after reactions, carrying out spray-drying to obtain modified sulfonated phenolic resin. The invention also provides a drilling well slurry processing agent comprising the modified sulfonated phenolic resin.

Description

technical field [0001] The invention belongs to the field of oilfield chemistry, and in particular relates to a modified sulfonated phenolic resin and a drilling mud treatment agent containing the modified sulfonated phenolic resin. Background technique [0002] With the increase of the world's energy demand, the world's oil exploration and development is gradually developing into deep formations. Drilling formations are becoming more and more complex, and higher requirements are placed on the stability of drilling fluids in high-temperature and high-salinity environments. [0003] Sulfonated phenolic resin is a kind of mud treatment agent developed in recent years. It has the properties of salt resistance, high temperature resistance, control of mud dehydration and anti-collapse, etc. It is mainly used in deep well brine system. However, when the sulfonated phenolic resin prepared according to the existing method is used in high-temperature, high-pressure and high-salinity...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G8/28C08G8/24C08F120/56C08F2/44C09K8/03C09K8/035
CPCC08F2/44C08F120/56C08G8/24C08G8/28C09K8/03C09K8/032C09K8/035
Inventor 梁吉营
Owner 河南省遨太化工有限公司
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