JOURNAL OF POLYMER RESEARCH
·
2022
·Vol. 29
·期 5
·1-8
·
IF 3.061
Quan Hongping,Zhen Xuele,Wu Yang,Duan Wenmeng
Studying the thickening mechanism of non-crosslinked self-thickening polymer (ADDA) is of great significance for plugging high permeability channel and reducing reservoir heterogeneity. ADDA was synthesized from acrylamide, octadecyl dimethyl ammonium chloride, N-(3-(dimethylamino)propyl)methacrylamide and 4-acryloylmorpholine. The changes of apparent viscosity and hydrodynamic radius of ADDA acid solution were studied by simulating the acid rock reaction process. The hydrophobic joint strength and hydrophobic joint structure in the acid rock reaction process of ADDA acid solution were characterized by UV spectrum and environmental scanning electron microscopy (ESEM), and the self-thickening mechanism of ADDA acid solution in the acid rock reaction process was obtained. The results show that the apparent viscosity of ADDA acid solution increases monotonically with the acid rock reaction process, showing good self-thickening ability and high temperature resistance. Compared with the traditional in-situ crosslinking acid, ADDA acid solution avoids the secondary damage caused by the addition of crosslinking agent. Calcium chloride produced in the reaction process increases the polarity of the solution, is conducive to the intermolecular binding of ADDA polymer, and increase the apparent viscosity macroscopically. With the progress of the reaction, the hydrophobic combination strength of acid solution increased, and the hydrophobic combination between polymer molecules formed a three-dimensional network structure.
研究领域:
石油工程
·
高分子化学
·
地质学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2019
·Vol. 136
·期 36
·47907
·
IF 2.188
Haiyang Tian,Hongping Quan,Zhiyu Huang,Wenmeng Duan,Shunjie Deng
Different from traditional crosslinked polymer diverting agents, a polymeric and non-crosslinked acid self-thickening agent (ZPAM) based on hydrophobically associating water-soluble polymer of acrylamide (AM), [2-(methacryloyloxy)ethyl]trimethylammonium chloride (DMC) and N , N ′-dimethyl octadecyl allyl ammonium chloride (DOAC) was synthesized. The apparent viscosity variation of ZPAM acid solutions in acid rock reaction and rheological properties of ZPAM spent acid solutions were studied. Results showed that ZPAM acid solutions demonstrated good uninterruptedly thickening ability from low apparent viscosity to high apparent viscosity during the acid rock reaction. Meanwhile, ZPAM spent acid solutions showed good shear resistance, viscoelasticity and high temperature resistance. The thickening mechanism of ZPAM acid solutions during the acid rock reaction was explained by apparent viscosity change, rheological properties of simulative ZPAM acid solutions, and ZPAM aqueous solutions with different concentrations of CaCl 2 . The results showed increasing calcium chloride concentration enhanced the hydrophobic association strength of the thickener solution, resulting in increasing solution viscosity, in other words, the self-thickening agent showed excellent salt resistance and acid resistance. In addition, the change of association strength of ZPAM acid solutions during the acid rock reaction was further confirmed via environmental scanning electron micrographs and UV spectrum. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47907.
研究领域:
石油工程
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
·
2020
·
IF 3.706
Haiyang Tian,Hongping Quan,Zhiyu Huang
A novel betaine-type hydrophobically associating polyacrylamides (CPAM) consisting of acrylamide (AM), 1-carboxy-N, N′-dimethyl-N-(3-methyl-acrylamidopropyl) ethanaminium (CBMAA-1), Methacrylatoethyl trimethyl ammonium chloride (DMC) and N, N′-dimethyl octadecyl allyl ammonium chloride (DOAC) was synthesized, which was characterized by FT-IR and 1 H NMR spectra. Rheological properties of CPAM acid solutions were studied via six-speed rotational viscometer and HAAK MARSⅢ Rheometer. Moreover, the thickening mechanism of CPAM acid solutions during the acid rock reaction was investigated by simulating the acid rock reaction process. Results showed that CPAM acid solutions demonstrated good thickening ability from low apparent viscosity to high apparent viscosity during the acid rock reaction. Meanwhile, CPAM spent acid solutions showed good shear resistance, viscoelasticity and high temperature resistance, showing great potential as a self-diverting acid solution for carbonate formation. Besides, it was found that the main factor of affecting the thickening of the CPAM acid solutions was the concentration of CaCl 2 .
研究领域:
石油工程
·
化学工程
✓ 已验证
DOI
高影响因子
ACS Omega
·
2025
·
IF 4.3
Hongping Quan,Jinsui Li,Xingde Zhang,Yucheng Jia,Xing Yang
Acidification is an important procedure to remove the plug and retard the acid–rock reaction to make acid reach deeper formations, which is beneficial for reservoir stimulation. The adsorption-type acidification retarding agent could form an adsorption film on the rock surface to isolate H+, resulting in a lower rate of the acid–rock reaction. In this study, the retarding agent AD-2 was synthesized by free radical polymerization using acrylamide (AM), octadecyl dimethyl allyl ammonium chloride (DMAAC-18), and allyloxypolyethylene glycol (APEG-2400) as raw materials, while AD-1 was synthesized from AM and DMAAC-18. The results of the Fourier transform infrared (FT-IR) spectrum and 1H nuclear magnetic resonance (1H NMR) indicated that the two retarding agents were successfully prepared. The adsorption behavior of AD-1 and AD-2 on the carbonate rock surface matched the Freundlich model and the adsorption capacity of AD-2 was about 3 times that of AD-1 at 70 °C and 9000 mg/L. Meanwhile, the higher the temperature, the greater the adsorption capacity of AD-2, but it was the opposite for AD-1. Furthermore, the introduction of the polyoxyethylene ether group was conducive to enhancing adhesion force and forming a dense adsorption film on the carbonate rock surface, which was evidenced by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The retarding rate of AD-2 and AD-1 was 90.1% and 78.3%, respectively, because the retarding agent AD-2 containing polyoxyethylene ether formed a much denser adsorption film on the rock surface. In addition, the viscosity of 9000 mg/L AD-2 retarding acid solution was as low as 12 mPa·s, compared with that of AD-1 retarding acid solution (42 mPa·s). This research could provide a reference for the design of an adsorption acidification retarding agent with low viscosity in reservoir stimulation.
研究领域:
石油工程
·
储层改造
·
吸附科学
·
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）