Synthesis and characterization of a novel β-cyclodextrin modified cationic polyacrylamide and its application for enhancing oil recovery

Abstract

The methyl acrylamide propyl dimethyl butyl ammonium chloride (DMAPMA-C) and allyl-b-cyclodextrin (A-b-CD) were synthesized separately and then jointly copolymerized with acrylamide (AM) to form a novel cationic acrylamide polymer P(AM/A-b-CD/DMAPMA-C) through aqueous redox free-radical polymerization. The structure of the copolymer was characterized using Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance (NMR) and scanning electron microscopy (SEM). Subsequently, a series of experiments were carried out to investigate its comprehensive performances, including temperature resistance, salt tolerance, aqueous stability, and sandpack flooding experiments. In addition, the rheological properties of P(AM/A-b-CD/DMAPMA-C) were also tested and calculated. The results showed that P(AM/A-b-CD/DMAPMA-C) possessed higher salt tolerance, temperature resistance, and aqueous stability than polyacrylamide (PAM). The rheological properties also indicated its applicability for enhanced oil recovery. The copolymer could significantly increase the oil recovery of 15.47%, which indicated its potential application for enhancing oil recovery in the oilfield.

Hidrogéis Compósitos Poliméricos Com Possível Aplicação No Controle De Permeabilidade Em Reservatórios De Petróleo: Uma Revisão.

“…Por outro lado, os agentes reticulantes de natureza orgânica envolvem a ocorrência de ligações covalentes com os grupos funcionais do polímero, unindo duas ou mais cadeias poliméricas. Sendo mais estáveis termicamente, foram reportadas aplicações desses sistemas em temperaturas de até 156 °C (JIA et al, 2012;LENJI et al, 2018;JIA et al, 2017). Este comportamento pode ser atribuído à formação de ligações mais resistentes entre os polímeros e os agentes reticulantes (AL-MUNTASHERI et al, 2007;JIA et al, 2012;SENGUPTA et al, 2014;MA et al, 2017;CHEN, 2018).…”

“…A combinação polímero-carga exibe novas propriedades por conta de fortes interações entre as moléculas poliméricas e a sílica, as quais são atribuídas à formação de ligações hidrogênio entre o grupo carbonila, ou outros grupos polares, e o silanol (SiOH) presente na superfície da nano-partícula (LAI et al, 2016;MA et al, 2017;CHEN et al, 2018;HU et al, 2015); LASHARI et al, 2018).…”

Synthesis and characterization of cyclodextrin-based acrylamide polymer flocculant for adsorbing water-soluble dyes in dye wastewater

“…β-Cyclodextrins (β-CDs) are abundant in nature and have biodegradable and environmentally friendly properties, can be modified by chemical method [10,11], while at the same time, their hydrophobic cavity has a certain inclusion property for organic molecules with moderate radius, and can form inclusion compounds with aromatic compounds through host-guest recognition, so they have high removal efficiency for aromatic compounds in aromatic dye wastewater. It was reported that [12][13][14][15][16][17], β-CDs combined with traditional flocculating materials such as polyacrylamide can prepare new flocculating materials with high selectivity and high absorption efficiency for organic pollutants. However, in these related references, harmful organic reagents such as polyacrylamide are used in large quantities, which cannot be considered environmentally friendly.…”

Adsorption behavior of the copolymer AM/DMC/APEG/DMAAC-16 on a carbonate rock and its application for acidizing

“…[4][5][6] Recently, hydrophobic associating polymers have been widely used in oileld applications, such as acidizing treatments, 7,8 drilling and completion uids, and polymer ooding. [9][10][11][12] In oileld applications, the hydrophobic associating polymer is adsorbed on the reservoir for the interaction of the polymer and the reservoir, which may have some effect on the reservoir. The adsorption behavior of hydrophobic associating polymers has attracted signicant attention from many researchers.…”