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A kind of raw material composition for coating agent, coating agent and its preparation method and application

A technology of raw material composition and coating agent, applied in the direction of drilling composition, chemical instruments and methods, etc., can solve the problems of slow dissolution rate, poor shear resistance, unstable drilling fluid system, etc., and achieve fast dissolution rate , high dynamic shear force, good application prospect and application value

Active Publication Date: 2021-09-28
SHANDONG NUOER BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the existing coating agent will increase the viscosity of the system in the drilling fluid, resulting in various problems such as instability of the drilling fluid system, poor shear resistance, and slow dissolution rate. The defect is to provide a raw material formula for coating agent, coating agent and its preparation method and application, so as to reduce the plastic viscosity of water-based drilling fluid by using coating agent, improve dynamic shear force, dissolution speed and coating inhibition , shear resistance and salt resistance

Method used

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  • A kind of raw material composition for coating agent, coating agent and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] The present invention prepares the coating agent through the raw material formula and preparation method for the coating agent in the following proportions:

[0093] 153g of acrylamide, 27g of sodium carbonate, 3.1g of ammonium lauryl polyoxyethylene ether sulfate, 13g of polyoxyethylene lauryl alcohol (8) ether, 18g of α-methylstyrene, 27g of potassium chloride, polyoxypropylene polyoxyethylene 4.1g of oxyethylene glyceryl ether, 26g of dimethyl diallyl ammonium chloride, 728.8g of deionized water, 0.025g of di-tert-butyl peroxide, 0.0085g of p-tert-butylcatechol, N -Hydroxyethylethylamine triacetic acid 0.063g, dodecyl mercaptan 0.018g, azobisisobutamidine hydrochloride 1.1g, 3-[ N -tris(hydroxymethyl)methylamino]-2-hydroxypropanesulfonate sodium 15g, N - 23 g of sodium octadecyl-β-alanine, 15 g of methanol.

[0094] Concrete preparation process is as follows:

[0095] (1) Turn on the stirring in the reactor, set the speed at 200r / min, add 153g of acrylamide, 27g o...

Embodiment 2

[0101] The present invention prepares the coating agent through the raw material formula and preparation method for the coating agent in the following proportions:

[0102] 162g of acrylamide, 37g of sodium carbonate, 2.3g of laureth-4 phosphate, 17g of octylphenol polyoxyethylene ether, 21g of sodium 2-acrylamido-2-methylpropanesulfonate, 37g of potassium chloride, poly Oxypropylene polyoxyethylene glyceryl ether 3.2g, methacryloxyethyltrimethylammonium chloride 23g, deionized water 697.5g, di-tert-butyl peroxide 0.04g, p-tert-butylcatechol 0.01g, N -Hydroxyethylethylamine triacetic acid 0.07g, dodecyl mercaptan 0.02g, azobisisobutamidine hydrochloride 0.8g, 1,4-butanediol diacrylate 24g, N - 20 g of sodium octadecyl-β-alanine, 16 g of methanol.

[0103] Concrete preparation process is as follows:

[0104] (1) Turn on the stirring in the reactor, set the speed at 200r / min, mix 162g of acrylamide, 37g of sodium carbonate, 2.3g of laureth-4 phosphate, 17g of octylphenol polyo...

Embodiment 3

[0110] The present invention prepares the coating agent through the raw material formula and preparation method for the coating agent in the following proportions:

[0111] Acrylamide 147g, Sodium Carbonate 21g, Laureth Ammonium Sulfate 4.3g, Octylphenol Polyoxyethylene Ether 20g, α-Methyl Styrene 11g, Potassium Chloride 21g, Polyoxypropylene Polyoxyethylene Glyceryl Ether 6.0 g, 30g of dimethyl diallyl ammonium chloride, 739.7g of deionized water, 0.031g of ammonium persulfate, 0.0097g of p-tert-butylcatechol, 0.05g of diethylenetriaminepentaacetic acid, dodecylsulfur Alcohol 0.023g, azobisisobutyramide hydrochloride 0.96g, 3-[ N - 30 g of sodium tris(hydroxymethyl)methylamino]-2-hydroxypropanesulfonate, 30 g of dodecyldimethyl betaine, and 13 g of methanol.

[0112] Concrete preparation process is as follows:

[0113] (1) Turn on the stirring in the reactor, set the speed at 200r / min, add 147g of acrylamide, 21g of sodium carbonate, 4.3g of ammonium lauryl polyoxyethylene ...

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Abstract

The present invention relates to the technical field of polymer additives in petrochemical industry, in particular to a raw material formula for a coating agent, a coating agent and its preparation method and application, the material formula of the coating agent includes acrylamide monomers, the The raw material formula for the coating agent also includes the following components: physical mixing components, chemical adjustment components and initiators; the acrylamide monomer is used as a component in the physical mixing components; the chemical adjustment components Including oxidant, polymerization inhibitor, chelating agent and molecular weight regulator; the initiator is a high-temperature initiator; the coating agent prepared by the raw material formula for the coating agent provided by the present invention has low plastic viscosity and high dynamic shear force , strong coating inhibition, good shear resistance, and fast dissolution speed. Compared with other types of coating agents, it has better comprehensive performance. When used in drilling fluids in the petroleum field, the High value and wide application prospect.

Description

technical field [0001] The invention relates to the technical field of polymer additives in petrochemical industry, in particular to a raw material formula for a coating agent, a coating agent and a preparation method and use thereof. Background technique [0002] Drilling fluid is the "blood" of drilling and plays a very important role in drilling operations. The coating agent for drilling fluid is a kind of macromolecular polymer. few components. [0003] CN103952126B discloses a salt-resistant coating agent for drilling fluid and a preparation method thereof. Three monomers acrylamide, acrylic acid, dimethyl diallyl ammonium chloride and sodium silicate are dissolved in water, and the pH value is adjusted to 8 to 12 to prepare an aqueous solution; add the aqueous solution to the reactor, and maintain 10 minutes with nitrogen gas; add the initiator to the reactor, and react for 2 to 8 hours at 20 to 50 ° C; The glue solution was dried in an oven at a temperature of 90° C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/035
CPCC09K8/035
Inventor 荣敏杰郭奇许永升于庆华荣帅帅
Owner SHANDONG NUOER BIOLOGICAL TECH
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