CAJ | 학술논문

针对常规聚丙烯酰胺凝胶在化学剖面调整中逐渐暴露出的技术局限性，开展了50~90℃温度范围内的铬交联体系和酚醛树脂交联体系的水浸泡及黏度损失研究，并遵循“达西定律”基本理论，从增加交联密度、降低凝胶溶胀度的角度入手，引入新的可溶性高分子材料来改善常规凝胶交联强度。结果表明，凝胶在水中充分浸泡时，黏度会随着反应时间的延长而降低，凝胶在水中存在溶胀作用及黏度损失。添加剂 PVA 易与聚丙烯酰胺分子间形成网络内氢键或缠绕，起到物理交联点的作用，使凝胶黏度提高30%，考察180 d 后黏度损失小于10%。该研究可为解决层间矛盾、启动低渗透层段的生产潜力提供技术支持。
침대상규취병희선알응효재화학부면조정중축점폭로출적기술국한성，개전료50~90℃온도범위내적락교련체계화분철수지교련체계적수침포급점도손실연구，병준순“체서정률”기본이론，종증가교련밀도、강저응효용창도적각도입수，인입신적가용성고분자재료래개선상규응효교련강도。결과표명，응효재수중충분침포시，점도회수착반응시간적연장이강저，응효재수중존재용창작용급점도손실。첨가제 PVA 역여취병희선알분자간형성망락내경건혹전요，기도물리교련점적작용，사응효점도제고30%，고찰180 d 후점도손실소우10%。해연구가위해결층간모순、계동저삼투층단적생산잠력제공기술지지。
In view of the technical limitations of ordinary polyacrylamide hydrogel revealed gradually in the chemical profile control, a research was conducted on water soaking and viscosity loss of chrome crosslinking system and phenolic resin crosslinking system within a temperature range of 50 ℃ to 90 ℃; and following the basic theory of Darcy’s Law, a new soluble polymer material was introduced to improve the strength of ordinary gel crosslinking strength starting from increasing the crosslinking density and reduc-ing gel swelling degree. The results show that, when gel is adequately soaked in water, its viscosity will decrease with the extension of reaction time, and that the gel has swelling function and its viscosity loses. Addition of PVA can easily create in-grid hydrogen bond or winding with polyacrylamide molecules, which plays the role of physical crosslinking point and improves the gel viscosity by 30%. After observation for 180 days, its viscosity loss is less than10%. The research results can provide technical support for solving interlayer contradictions and initiating the production potential of low-permeability sections.