Synthesis method of organosilicon drilling fluid water loss reducing agent

A fluid loss reducing agent and synthetic method technology, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of high cost of solvent separation and recovery, reduction of polymer molecular weight, low production capacity of equipment, etc., and achieve high polymerization rate Fast, high molecular weight, strong temperature and salt resistance

Inactive Publication Date: 2012-12-12
HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages of solution polymerization: low monomer concentration, slow polymerization rate, and low equipment production capacity; the double result of low monomer concentration and transfer to the solvent chain reduces the molecular weight of the polymer; the cost of solvent separation and recovery is high, and it is difficult to remove Residual solvents in polymers

Method used

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  • Synthesis method of organosilicon drilling fluid water loss reducing agent
  • Synthesis method of organosilicon drilling fluid water loss reducing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Add 0.711g of acrylamide, 1.0362g of sodium 2-acrylamido-2-methylpropanesulfonate, and 0.148g of vinyltrimethoxysilane to 2.12g of N,N-dimethylformamide as a solvent , and then add 0.058g of initiator (2,4,6-trimethylbenzoyl) diphenylphosphorus oxide, avoid light and sonicate for a period of time until the mixture is completely dissolved.

[0025] (2) Take an appropriate amount of the solution and light-cure it under a UV lamp for 20 minutes to obtain a gel-like substance, soak it in anhydrous ethanol for several hours, take it out, vacuum-dry it, and grind it to obtain a white powdery copolymer product.

Embodiment 2

[0027] (1) Add 0.711g of acrylamide, 1.0362g of sodium 2-acrylamido-2-methylpropanesulfonate, and 0.739g of vinyltrimethoxysilane to 2.858g of N,N-dimethylformamide as a solvent , and then add 0.058g of initiator (2,4,6-trimethylbenzoyl) diphenylphosphorus oxide, avoid light and sonicate for a period of time until the mixture is completely dissolved.

[0028] (2) Take an appropriate amount of the solution and light-cure it under a UV lamp for 20 minutes to obtain a gel-like substance, soak it in anhydrous ethanol for several hours, take it out, vacuum-dry it, and grind it to obtain a white powdery copolymer product.

Embodiment 3

[0030] (1) Add 0.711g of acrylamide, 1.6499g of sodium 2-acrylamido-2-methylpropanesulfonate, 0.7413g of vinyltrimethoxysilane to 3.3512g of acetone, and then add 0.1548g of initiator 1 -Hydroxycyclohexyl phenyl ketone, protected from light and sonicated for a period of time until the mixture is completely dissolved.

[0031] (2) Take an appropriate amount of the solution and cure it under ultraviolet light for 25 minutes to obtain a gel-like substance, soak it in absolute ethanol for several hours, take it out and vacuum-dry it, and grind it to obtain a white powdery copolymer product.

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Abstract

The invention relates to a synthesis method of an organosilicon drilling fluid water loss reducing agent, which comprises the following steps: adding 2-acrylamido-2-methylpropanesulfonic acid and acrylamide into an organic solvent, adding an organosilicon monomer and a photoinitiator, and carrying out ultrasonic treatment until all the solid matters are dissolved; irradiating under ultraviolet light for some time to obtain a gelatinous product; soaking the gelatinous matter in anhydrous alcohol for several hours; and taking out, carrying out vacuum drying, and grinding to obtain the white powdery product. The fluid loss agent prepared by the method provided by the invention has the advantages of favorable water loss reducing property, high temperature resistance, favorable salt resistance, high molecular weight and high stability; besides, the method provided by the invention has the advantage of high polymerization rate, and is simple; and the water loss reducing agent has favorable fluid loss reducing effect in both fresh-water drilling fluids and salt-water drilling fluids.

Description

technical field [0001] The invention relates to a synthesis method of an organic silicon drilling fluid fluid loss reducer. Background technique [0002] Drilling fluid is an important component of drilling engineering, and its performance is directly related to the drilling quality and drilling cost of deep and ultra-deep wells. As the formation depth increases, the temperature of deep wells and ultra-deep wells will also become higher and higher. Therefore, high requirements are placed on the ability of drilling fluids to resist high temperatures. The fluid loss control agent is an indispensable part of the drilling fluid. The performance of the fluid loss control agent will directly affect the performance of the drilling fluid. The purpose of adding the fluid loss control agent is to form a low permeability on the well wall High-efficiency, flexible, thin and dense filter cake can reduce the fluid loss of drilling fluid as much as possible, so as to maintain an appropria...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F220/58C08F230/08C08J3/24C09K8/035
Inventor 马贵平张亚兰聂俊路健
Owner HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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