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Brown coal resin for drilling fluid and production technology of brown coal resin

A lignite resin and drilling fluid technology, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of reduced drilling fluid use efficiency, ineffective fluid loss control, poor thermal stability, etc., to achieve fluid loss reduction Salt resistance, improved fluid loss performance, and excellent temperature resistance

Inactive Publication Date: 2018-05-11
YUMEN OIL FIELD KEDA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) Poor thermal stability, not resistant to high temperature;
[0004] (2) Poor salt resistance makes the drilling fluid susceptible to contamination by soluble salts, reducing the efficiency of drilling fluid use;
[0005] (3) The effect of reducing fluid loss is not obvious, and a large amount of products need to be added to achieve the performance of reducing fluid loss

Method used

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  • Brown coal resin for drilling fluid and production technology of brown coal resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: Preparation of a kind of lignite resin for drilling fluid

[0028] (1) Accurately weigh each raw material component according to the formula: lignite 10 kg, sulfonated phenolic resin 10 kg, alkalizing agent 2 kg, sulfonating agent 2 kg, sulfonated phenolic humic acid 2 kg, carboxymethyl cellulose 1 kg, 3 kg of sodium sulfomethyl humate, 4 kg of acrylamide polymer, 12 kg of trimethylamine, and 20 kg of water, weighed and placed in corresponding containers for later use; alkalizing agents are potassium hydroxide, hydrogen Any one of sodium oxide; the sulfonating agent is any one of sodium sulfite, sodium metasulfate, sodium pyrosulfite, sodium sulfate, sodium metabisulfite, sodium bisulfite, and sodium bisulfate; the acrylamide polymer is polyacrylamide , cationic polyacrylamide or partially hydrolyzed polyacrylamide;

[0029] (2) Use a mechanical pump to pour the weighed water into the reaction kettle, start the stirring device to stir; in the continuous s...

Embodiment 2

[0033] Embodiment 2: Preparation of a kind of lignite resin for drilling fluid

[0034] (1) Accurately weigh each raw material component according to the formula: lignite 15 kg, sulfonated phenolic resin 15 kg, alkalizing agent 5 kg, sulfonating agent 5 kg, sulfonated phenolic humic acid 4 kg, carboxymethyl cellulose 3 kg, 5 kg of sodium sulfomethyl humate, 6 kg of acrylamide polymer, 15 kg of trimethylamine, and 22 kg of water, weighed and placed in corresponding containers for later use; alkalizing agents are potassium hydroxide, hydrogen Any one of sodium oxide; the sulfonating agent is any one of sodium sulfite, sodium metasulfate, sodium pyrosulfite, sodium sulfate, sodium metabisulfite, sodium bisulfite, and sodium bisulfate; the acrylamide polymer is polyacrylamide , cationic polyacrylamide or partially hydrolyzed polyacrylamide;

[0035] (2) Use a mechanical pump to pour the weighed water into the reaction kettle, start the stirring device to stir; in the continuous s...

Embodiment 3

[0039] Embodiment 3: Preparation of a kind of lignite resin for drilling fluid

[0040] (1) Accurately weigh each raw material component according to the formula: lignite 18 kg, sulfonated phenolic resin 18 kg, alkalizing agent 8 kg, sulfonating agent 8 kg, sulfonated phenolic humic acid 5 kg, carboxymethyl cellulose 5 kg, 7 kg of sodium sulfomethyl humate, 7.5 kg of acrylamide polymer, 18 kg of trimethylamine, and 24 kg of water, which were weighed and placed in corresponding containers for later use; alkalizing agents were potassium hydroxide, Any one of sodium hydroxide; the sulfonating agent is any one of sodium sulfite, sodium metasulfate, sodium pyrosulfite, sodium sulfate, sodium metabisulfite, sodium bisulfite, and sodium bisulfate; the acrylamide polymer is polypropylene Any one of amide, cationic polyacrylamide or partially hydrolyzed polyacrylamide;

[0041] (2) Use a mechanical pump to pour the weighed water into the reaction kettle, start the stirring device to sti...

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Abstract

The invention discloses brown coal resin for a drilling fluid and a production technology of the brown coal resin. Brown coal and sulfonated phenolic resin are used as main materials, sulfonated phenol humic acid with excellent salt resistance and high-temperature resistance is introduced, and the brown coal resin has remarkable high-temperature-resistant, filtration loss reduction and salt-resistant performance after being modified with a basifier and a sulfonating agent and has anti-collapse and viscosity control effects. A small amount of carboxymethyl cellulose is added, and the carboxymethyl cellulose has excellent stability and still has significant performance at 150 DEG C or above; meanwhile, trimethylamine and sulfomethyl sodium humate with excellent temperature resistance, salt resistance and calcium and magnesium ion resistance are introduced, the adsorption capacity of sulfonated phenolic resin and clay is enhanced, the temperature resistance and the salt resistance of theproduct are effectively improved, the value of the product is increased, the addition amount is small, the filtration loss reduction effect is significant, and excellent filtration loss reduction performance can be produced after only 1.0% of base slurry is added.

Description

technical field [0001] The invention relates to the field of drilling fluid additives and production methods thereof, in particular to a lignite resin for drilling fluid and a production process thereof. Background technique [0002] Drilling fluid is the blood of drilling. Chemical agents for drilling fluid are an important part of drilling fluid. Among them, filter loss agent is widely added to drilling fluid as an important chemical agent, and lignite resin is made of lignite. An organic polymer obtained after a series of chemical treatments. Lignite is a kind of mineral coal with the lowest degree of coalification. It is also a brown-black, dull low-grade coal between peat and bituminous coal. It has strong chemical reactivity and is easy to weather in the air. It is difficult to store and transport. Serious air pollution when burning, which contains 20-80% humic acid, insoluble in water, can chemically react with alkali to form water-soluble humate, mainly used for ant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/03C09K8/16C09K8/24
CPCC09K8/03C09K8/16C09K8/24
Inventor 段学容张宾林瑞
Owner YUMEN OIL FIELD KEDA CHEM
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