Microemulsion polymerization strong coater for drilling fluid and preparation method of strong coater

A microemulsion polymerization and drilling fluid technology, applied in the field of oilfield chemical treatment agents, can solve the problems of unfavorable industrial production, expensive raw materials, complicated preparation steps, etc., and achieve the effects of excellent anti-slump effect, fast dissolution rate, and narrow molecular weight distribution.

Inactive Publication Date: 2014-12-03
XINXIANG FUBANG TECH
View PDF9 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The patent whose publication number is CN101235283A discloses a kind of amphoteric polyacrylamide oil field fracturing thickener and its preparation method, with sorbitan fatty acid ester, nonylphenol polyoxyethylene ether and fatty alcohol polyoxyethylene ether The compound of emulsifier is emulsifier, acrylamide, acrylic acid or methacrylic acid, methyl allyl ammonium chloride, N, N-methylenebisacrylamide as monomer and water, oil, alcohol, persulfuric acid Ammonium and hexamethylenediamine oxalate are polymerized in an inverse emulsion system to obtain a uniform and stable inverse emulsion. This method is complex in process, cumbersome in preparation steps, expensive in raw materials, and unfavorable for industrial production.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Microemulsion polymerization strong coater for drilling fluid and preparation method of strong coater
  • Microemulsion polymerization strong coater for drilling fluid and preparation method of strong coater
  • Microemulsion polymerization strong coater for drilling fluid and preparation method of strong coater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) In the reactor, add deionized water and 60kg potassium hydroxide, start stirring, wait until the potassium hydroxide is completely dissolved, and after cooling to below 40°C, add 2-acrylamide- Add 2-methylpropanesulfonic acid and acrylic acid to the above solution until pH=7-9, after cooling to room temperature, add 180kg of acrylamide and 20kg of complexing agent disodium edetate, stir and mix well; (2) in Add 200kg of white oil and 10kg of emulsifier Span-80 into the emulsification reaction kettle, turn on the high-speed agitator, emulsify for 30 minutes, and bubble high-purity nitrogen for 20 minutes, and continue to stir at a high speed. The temperature is controlled below 40°C; (3) in nitrogen Add the reaction product in step (1) into the emulsification reactor under protection, stir at high speed for 60 minutes, add 8g of initiator hydrogen peroxide, slow down the stirring speed, and start to slowly increase the temperature of the reactor to 65-68°C; (4 ) to r...

Embodiment 2

[0015] (1) In the reactor, add deionized water and 80kg potassium hydroxide, start stirring, wait until the potassium hydroxide is completely dissolved, and after cooling to below 40°C, add 2-acrylamide- Add 2-methylpropanesulfonic acid and acrylic acid to the above solution until pH=7-9, after cooling to room temperature, add 200kg of acrylamide and 20kg of complexing agent disodium edetate, stir and mix well; (2) in Add 300kg of white oil and 20kg of emulsifier Span-80 into the emulsification reaction kettle, turn on the high-speed agitator, emulsify for 30 minutes, and bubble high-purity nitrogen for 20 minutes, and continue to stir at a high speed. The temperature is controlled below 40°C; (3) in nitrogen Add the reaction product in step (1) into the emulsification reactor under protection, stir at high speed for 60 minutes, add 10g of initiator hydrogen peroxide, slow down the stirring speed, and start to slowly increase the temperature of the reactor to 65-68°C; (4 )...

Embodiment 3

[0017] (1) In the reactor, add deionized water and 100kg potassium hydroxide, start stirring, wait until the potassium hydroxide is completely dissolved, and after cooling to below 40°C, add 2-acrylamide- Add 2-methylpropanesulfonic acid and acrylic acid to the above solution until the pH=7-9. After cooling to room temperature, add 240kg of acrylamide and 20kg of complexing agent disodium ethylenediaminetetraacetic acid, stir and mix evenly; (2) Add 350kg of white oil and 20kg of emulsifier Span-80 into the emulsification reaction kettle, turn on the high-speed agitator, emulsify for 30 minutes, and bubble high-purity nitrogen for 20 minutes, and continue to stir at a high speed. The temperature is controlled below 40°C; (3) In nitrogen Add the reaction product in step (1) into the emulsification reactor under protection, stir at high speed for 60 minutes, add 15g of initiator hydrogen peroxide, slow down the stirring speed, and start to slowly increase the temperature of t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a microemulsion polymerization strong coater for a drilling fluid and a preparation method of the strong coater. The key point of the technical scheme disclosed by the invention is as follows: the microemulsion polymerization strong coater for the drilling fluid is a copolymer which is formed from potassium acrylate, acrylamide and 2-acrylamidyl-2-methyl propanesulfonic acid by virtue of free radical polymerization, wherein the molecular weight of the copolymer is 15000 thousand to 24000 thousand. The structure of the copolymer is as shown in the specification, wherein l:m:n is equal to a:b:c, a is greater than or equal to 95 but less than 100, b is greater than 0 but less than or equal to 5 and c is greater than 0 but less than or equal to 5. The invention further discloses the preparation method of the microemulsion polymerization strong coater for the drilling fluid. The strong coater disclosed by the invention is high in polymerization efficiency, and the polymerized product is stable in performance and convenient to apply and is widely applied in the drilling process of an oil field. The strong coater can be used for greatly improving the rejection capability and the coating ability of the drilling fluid so as to form a drilling fluid system with a stable performance.

Description

technical field [0001] The invention belongs to the technical field of oilfield chemical treatment agents, and in particular relates to a microemulsion polymerization strong coating agent for drilling fluid and a preparation method thereof. Background technique [0002] The products of inverse emulsion polymerization with acrylamide and acrylic acid as main raw materials have been widely used in papermaking, water treatment, oil and gas field fracturing and crude oil extraction. Microemulsion polymers have the advantages of good stability, small particle size of emulsion micelles, high molecular weight and narrow distribution, etc. Compared with traditional polymers, the effective utilization rate can be increased by more than 35%. [0003] At present, the commonly used drilling fluid coating inhibitors are mainly powders, with a relative molecular weight of 3×10 6 -5×10 6 , high production energy consumption, difficult drying, easy to be affected by moisture, agglomeratio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/58C08F220/56C08F220/06C08F2/30
Inventor 高新义李平王军成李本旭谢晓娜
Owner XINXIANG FUBANG TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap