Multi-scale structures involved in emulsion and microsphere complex systems are presented and discussed. The stability and spatio-temporal structures of emulsions, as well as nano-structures formed on the surface of m...Multi-scale structures involved in emulsion and microsphere complex systems are presented and discussed. The stability and spatio-temporal structures of emulsions, as well as nano-structures formed on the surface of microspheres after polymerization, are affected by the molecular emulsifier/stabilizer structures and the adsorbed emulsifier/stabilizer nano-structures on the oil/water interface. The broad size distribution and variation of surface features of droplets are responsible for variations of the adsorbed emulsifier/stabilizer structures and the stability of the emulsions. On the other hand, preparation of a uniformly sized emulsion and employment of a combined emulsifier/stabilizer system can preserve the stability of the emulsions and microspheres. The above phenomena should be modeled by a multiscale method, in order to maintain the stability of individual emulsion systems and realize the desired nano-structures of microspheres by choosing adequate emulsifier/stabilizer and experimental parameters.展开更多
针对海上S油田地层中胶质和沥青质含量高、稠油粘度大和水驱采收率低的问题,采用双子表面活性剂RB107对S油田稠油进行降粘实验,评价其乳化浓度、聚集形态、界面活性、润湿性和稳定性等,在此基础上通过物理模拟驱油实验考察其驱油性能。...针对海上S油田地层中胶质和沥青质含量高、稠油粘度大和水驱采收率低的问题,采用双子表面活性剂RB107对S油田稠油进行降粘实验,评价其乳化浓度、聚集形态、界面活性、润湿性和稳定性等,在此基础上通过物理模拟驱油实验考察其驱油性能。结果显示:在油藏条件下,当质量分数为0.3%、油水体积比为50∶50时,可使稠油粘度降低97%,使油水界面张力降至0.165 6 m N/m,说明双子表面活性剂RB107在较低浓度下具有较强降粘性能和界面活性;乳化速度为0.24 m L/min,油水乳状液油珠分散均匀且直径小,说明RB107具有较快的乳化速度和较强的稳定性;RB107溶液与原油基底的接触角为10.8°,说明对油水界面具有较强的润湿性;其可在水驱的基础上提高采收率10.1%,说明RB107对S油田稠油具有良好的降粘效果,可作为S油田稠油的降粘剂。展开更多
基金supported by the National Natural Science Foundation of China(Contract No.20125616 and 20221603)the Chinese Academy of Sciences for international cooperation.
文摘Multi-scale structures involved in emulsion and microsphere complex systems are presented and discussed. The stability and spatio-temporal structures of emulsions, as well as nano-structures formed on the surface of microspheres after polymerization, are affected by the molecular emulsifier/stabilizer structures and the adsorbed emulsifier/stabilizer nano-structures on the oil/water interface. The broad size distribution and variation of surface features of droplets are responsible for variations of the adsorbed emulsifier/stabilizer structures and the stability of the emulsions. On the other hand, preparation of a uniformly sized emulsion and employment of a combined emulsifier/stabilizer system can preserve the stability of the emulsions and microspheres. The above phenomena should be modeled by a multiscale method, in order to maintain the stability of individual emulsion systems and realize the desired nano-structures of microspheres by choosing adequate emulsifier/stabilizer and experimental parameters.
文摘针对海上S油田地层中胶质和沥青质含量高、稠油粘度大和水驱采收率低的问题,采用双子表面活性剂RB107对S油田稠油进行降粘实验,评价其乳化浓度、聚集形态、界面活性、润湿性和稳定性等,在此基础上通过物理模拟驱油实验考察其驱油性能。结果显示:在油藏条件下,当质量分数为0.3%、油水体积比为50∶50时,可使稠油粘度降低97%,使油水界面张力降至0.165 6 m N/m,说明双子表面活性剂RB107在较低浓度下具有较强降粘性能和界面活性;乳化速度为0.24 m L/min,油水乳状液油珠分散均匀且直径小,说明RB107具有较快的乳化速度和较强的稳定性;RB107溶液与原油基底的接触角为10.8°,说明对油水界面具有较强的润湿性;其可在水驱的基础上提高采收率10.1%,说明RB107对S油田稠油具有良好的降粘效果,可作为S油田稠油的降粘剂。
