摘要
选择α-烯烃磺酸钠(AOS)作为起泡剂,部分水解聚丙烯酰胺(HPAM)作为稳泡剂,研究了AOS与HPAM二元泡沫体系的起泡性能、稳定性、吸附性能、分流率及采收率。结果表明,二元泡沫体系具有良好的起泡性;在一定范围内,2种分子量的HPAM都能提高二元泡沫体系的泡沫稳定性,但含1600万HPAM的二元泡沫体系在较宽的浓度范围都具有良好的泡沫稳定性;二元泡沫体系能够有效降低表面活性剂在油砂上的吸附量;能够有效遏制高渗透岩心窜流,调整高低渗透岩心分流率;水驱后,二元泡沫驱比聚合物驱提高采收率值更高,具有更好的驱油效果。
Sodium alpha-olefin sulfonate(AOS)is used to foam,and HPAM is foam stabilizer.The properties of binary foam system are studied in terms of the foamability,stability,adsorbability,divided-flow ratio and recovery factor.The results show that the binary foam system has better frothing capacity.Two kinds of molecular weight of HPAM can improve foam stability of binary foam system,but with 16million HPAM,the binary foam system has good foam stability in a wider concentration range.The binary foam system can effectively reduce the adsorption quantity of AOS on oil sand,and it also can adjust the divided-flow ratio of the high permeability core and low permeability core.The recovery factor of the binary foam system flooding is higher than HPAM flooding,and it has better oil displacement effect.
出处
《长江大学学报（自科版）（中旬）》
CAS
2014年第3期107-110,4,共4页
Journal of Yangtze University(Nature Science Edition)
基金
国家科技重大专项(2011ZX05010-004)
