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Physical Methods for Controlling Microbial Growth: Temperature01:23

Physical Methods for Controlling Microbial Growth: Temperature

Heat is a widely used method to control microbial growth by targeting and denaturing cellular proteins, thereby killing or inactivating microbes. This method's effectiveness is quantified using parameters such as the thermal death point (TDP), thermal death time (TDT), and decimal reduction time (D value). TDP represents the lowest temperature at which all microorganisms in a liquid suspension are eliminated within 10 minutes, whereas TDT is the time necessary to achieve sterilization at a...

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热稳定的凝颗粒具有优化性能,用于高温符合性控制.

Qiming Zheng1, Chenming Peng2, Wei Qian2

  • 1School of Earth Sciences and Resources, China University of Geosciences, Beijing, 100083, China. zhengqimingcug@outlook.com.

BMC chemistry
|December 14, 2025
PubMed
概括

一个新的双交联凝颗粒系统 (DPAG) 为油田符合性控制提供了卓越的高温耐受性. 在具有挑战性的水库条件下,DPAG提高了堵塞效率和石油回收.

关键词:
符合性控制控制的控制凝颗粒是一种凝颗粒.热稳定性 热稳定性

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科学领域:

  • 石油工程是石油工程中的一个.
  • 材料科学 材料科学 材料科学
  • 聚合物化学 聚合物化学

背景情况:

  • 传统的符合性控制系统在高温水库中面临热降解和不稳定.
  • 现有的聚合物凝和泡技术在极端热应力下表现出局限性.
  • 对于在具有挑战性的油田环境中进行有效的合规控制,需要强大的材料.

研究的目的:

  • 开发和评估一种新的耐高温凝颗粒系统,称为DPAG,用于高温水库的符合性控制.
  • 为了合成具有增强热稳定性和机械性能的DPAG凝颗粒.
  • 评估DPAG在注射性,堵塞效率和提升石油回收方面的性能.

主要方法:

  • 使用热稳定单体 (AMPS和DAC) 的逆乳液聚合合成了DPAG凝颗粒.
  • 鉴定包括化学结构评估,粒子大小测量和显微镜形态检查.
  • 性能评估包括热力学稳定性分析,学特征,胀动力学研究和核心洪水实验.

主要成果:

  • DPAG凝颗粒显示出均的尺寸分布和明确的形态.
  • 与传统的AM凝颗粒相比,观察到增强的结构完整性,耐热性和机械强度.
  • DPAG分散 (0.1%-0.5%) 实现了高达98.7%的堵塞效率,并提高了22.4%的石油回收,具有出色的注射性和稳定性.

结论:

  • 在高温油田中,DPAG凝颗粒显示出有效的井符合性控制的巨大潜力.
  • 双交叉连接网络在恶劣的水库条件下提供卓越的稳定性和性能.
  • 在具有挑战性的环境中,DPAG为提高石油回收和运营效率提供了一个有希望的解决方案.