用于油藏开采中调驱的预形成聚两性电解质颗粒凝胶复合材料的制备与表征

Preparation and Characterization of a Preformed Polyampholyte Particle Gel Composite for Conformance Control in Oil Recovery.

作者信息

Gussenov Iskander, Shakhvorostov Alexey, Ayazbayeva Aigerim, Gizatullina Nargiz, Klivenko Alexey, Kudaibergenov Sarkyt

机构信息

Institute of Polymer Materials and Technology, Microregion "Atyrau 1", 3/1, Almaty 050019, Kazakhstan.

Department of Chemical and Biochemical Engineering, Satbayev University, Almaty 050013, Kazakhstan.

出版信息

Polymers (Basel). 2023 Oct 15;15(20):4095. doi: 10.3390/polym15204095.

Preformed particle gels (PPGs) based on acrylamide (AAm), (3-acrylamidopropyl) trimethylammonium chloride (APTAC), and 2-acrylamido-2-methyl-1-propanesulfonic acid sodium salt (AMPS) were synthesized via conventional free radical copolymerization. The resultant PPGs of various compositions were characterized using FTIR spectroscopy, TG and DT analysis, and mechanical testing. The swelling behavior of PPGs depending on ionic strength, temperature, degree of crosslinking, and pH was also studied. The obtained results show that the swelling mechanism of PPGs is mainly due to the diffusion of the solvent. The mechanical properties of PPGs were improved by creating a composite polymer network by adding the clay mineral (bentonite) to the reaction mixture of monomers, which also makes it possible to control the Young's modulus and the swelling degree of the samples.

基于丙烯酰胺（AAm）、（3-丙烯酰胺基丙基）三甲基氯化铵（APTAC）和2-丙烯酰胺基-2-甲基-1-丙磺酸钠盐（AMPS）的预成型颗粒凝胶（PPGs）通过常规自由基共聚反应合成。使用傅里叶变换红外光谱（FTIR）、热重（TG）和差示扫描量热（DT）分析以及力学测试对所得的各种组成的PPGs进行了表征。还研究了PPGs在离子强度、温度、交联度和pH值影响下的溶胀行为。所得结果表明，PPGs的溶胀机制主要是由于溶剂的扩散。通过在单体反应混合物中添加粘土矿物（膨润土）形成复合聚合物网络，改善了PPGs的力学性能，这也使得控制样品的杨氏模量和溶胀度成为可能。