Synthesis and mechanism study of temperature- and salt-resistant amphoteric polyacrylamide with MAPTAC and DTAB as monomers

The failure of thickeners at high temperature results in gelled acid acidification fracturing. To solve the problem, 8 kinds of polymers were synthesized by free radical polymerization of aqueous solution using AM, AMPS, NaAMPS, MAPTAC, DTAB and NVP as raw materials. The polymer was characterized by...

Full description

Saved in:
Bibliographic Details
Main Authors: Sui, Yu, Cao, Guangsheng, Guo, Tianyue, Zhang, Zihang, Zhang, Zhiqiu, Xiao, Zhongmin
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2023
Subjects:
Online Access:https://hdl.handle.net/10356/164798
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-164798
record_format dspace
spelling sg-ntu-dr.10356-1647982023-02-15T01:15:02Z Synthesis and mechanism study of temperature- and salt-resistant amphoteric polyacrylamide with MAPTAC and DTAB as monomers Sui, Yu Cao, Guangsheng Guo, Tianyue Zhang, Zihang Zhang, Zhiqiu Xiao, Zhongmin School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Acid Fracturing Polyacrylamide The failure of thickeners at high temperature results in gelled acid acidification fracturing. To solve the problem, 8 kinds of polymers were synthesized by free radical polymerization of aqueous solution using AM, AMPS, NaAMPS, MAPTAC, DTAB and NVP as raw materials. The polymer was characterized by infrared spectroscopy and viscosity-average molecular weight, and the temperature resistance, rheology, salt resistance and shear resistance of the polymer solution were compared, and the mechanism was analyzed. The results show that the viscosity of GTY−2 is 181.52 mPa·s, and the viscosity loss rate is 56.89% at 180 °C and 100 s−1, and its temperature resistance is the best. Meanwhile, the viscosity retention rate of GTY−2 is 84.58% after 160 min shear, showing the strongest shear resistance. The viscosity loss rate of GTY−1 in 20% hydrochloric acid solution is 80.88%, and its acid resistance is stronger than that of GTY−2. Moreover, due to the amphiphilicity of DTAB, the molecular hydration film becomes thicker, and the salt resistance of GTY−2 is lower than that of GTY−1. The experimental results show that GTY−1 and GTY−2 have good temperature resistance, salt resistance, acid resistance and shear resistance, and can be used as thickeners for acid fracturing with thickened acid to improve the effect of acid fracturing under high temperature conditions. Published version The authors are grateful for the National Natural Science Foundation of China (No. 51574089). 2023-02-15T01:15:01Z 2023-02-15T01:15:01Z 2022 Journal Article Sui, Y., Cao, G., Guo, T., Zhang, Z., Zhang, Z. & Xiao, Z. (2022). Synthesis and mechanism study of temperature- and salt-resistant amphoteric polyacrylamide with MAPTAC and DTAB as monomers. Processes, 10(8), 10081666-. https://dx.doi.org/10.3390/pr10081666 2227-9717 https://hdl.handle.net/10356/164798 10.3390/pr10081666 2-s2.0-85137575873 8 10 10081666 en Processes © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Mechanical engineering
Acid Fracturing
Polyacrylamide
spellingShingle Engineering::Mechanical engineering
Acid Fracturing
Polyacrylamide
Sui, Yu
Cao, Guangsheng
Guo, Tianyue
Zhang, Zihang
Zhang, Zhiqiu
Xiao, Zhongmin
Synthesis and mechanism study of temperature- and salt-resistant amphoteric polyacrylamide with MAPTAC and DTAB as monomers
description The failure of thickeners at high temperature results in gelled acid acidification fracturing. To solve the problem, 8 kinds of polymers were synthesized by free radical polymerization of aqueous solution using AM, AMPS, NaAMPS, MAPTAC, DTAB and NVP as raw materials. The polymer was characterized by infrared spectroscopy and viscosity-average molecular weight, and the temperature resistance, rheology, salt resistance and shear resistance of the polymer solution were compared, and the mechanism was analyzed. The results show that the viscosity of GTY−2 is 181.52 mPa·s, and the viscosity loss rate is 56.89% at 180 °C and 100 s−1, and its temperature resistance is the best. Meanwhile, the viscosity retention rate of GTY−2 is 84.58% after 160 min shear, showing the strongest shear resistance. The viscosity loss rate of GTY−1 in 20% hydrochloric acid solution is 80.88%, and its acid resistance is stronger than that of GTY−2. Moreover, due to the amphiphilicity of DTAB, the molecular hydration film becomes thicker, and the salt resistance of GTY−2 is lower than that of GTY−1. The experimental results show that GTY−1 and GTY−2 have good temperature resistance, salt resistance, acid resistance and shear resistance, and can be used as thickeners for acid fracturing with thickened acid to improve the effect of acid fracturing under high temperature conditions.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Sui, Yu
Cao, Guangsheng
Guo, Tianyue
Zhang, Zihang
Zhang, Zhiqiu
Xiao, Zhongmin
format Article
author Sui, Yu
Cao, Guangsheng
Guo, Tianyue
Zhang, Zihang
Zhang, Zhiqiu
Xiao, Zhongmin
author_sort Sui, Yu
title Synthesis and mechanism study of temperature- and salt-resistant amphoteric polyacrylamide with MAPTAC and DTAB as monomers
title_short Synthesis and mechanism study of temperature- and salt-resistant amphoteric polyacrylamide with MAPTAC and DTAB as monomers
title_full Synthesis and mechanism study of temperature- and salt-resistant amphoteric polyacrylamide with MAPTAC and DTAB as monomers
title_fullStr Synthesis and mechanism study of temperature- and salt-resistant amphoteric polyacrylamide with MAPTAC and DTAB as monomers
title_full_unstemmed Synthesis and mechanism study of temperature- and salt-resistant amphoteric polyacrylamide with MAPTAC and DTAB as monomers
title_sort synthesis and mechanism study of temperature- and salt-resistant amphoteric polyacrylamide with maptac and dtab as monomers
publishDate 2023
url https://hdl.handle.net/10356/164798
_version_ 1759058772692566016