The adsorption property of a new amphoteric graft copolymer of carboxymethyl cellulose with acrylamide and dimethylamminoethyl methacrylate(CGAD) on bentonite particles was studied by the method of CdI2-starch colorin...The adsorption property of a new amphoteric graft copolymer of carboxymethyl cellulose with acrylamide and dimethylamminoethyl methacrylate(CGAD) on bentonite particles was studied by the method of CdI2-starch coloring. The amount of adsorption increased with the increase of time or CGAD concentration, but decreased with the increasing concentration of added NaCl or added hexadecyltrimethylammonium (HDTMAC). The amount of adsorption was also found to be dependent on temperature. i.e. dereasing with the increasing temperature. The adsorption heat H was calculated by the relationship of temperature with the amount of adsorption. The X-ray diffraction showed that interlayer adlsorption occurred in the bentonite.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
文摘The adsorption property of a new amphoteric graft copolymer of carboxymethyl cellulose with acrylamide and dimethylamminoethyl methacrylate(CGAD) on bentonite particles was studied by the method of CdI2-starch coloring. The amount of adsorption increased with the increase of time or CGAD concentration, but decreased with the increasing concentration of added NaCl or added hexadecyltrimethylammonium (HDTMAC). The amount of adsorption was also found to be dependent on temperature. i.e. dereasing with the increasing temperature. The adsorption heat H was calculated by the relationship of temperature with the amount of adsorption. The X-ray diffraction showed that interlayer adlsorption occurred in the bentonite.
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。
