Surface active agent selection and performance evaluation in ternary combination huff-puff of super heavy oil

In view of high turn numbers and poor effect in huffpuff production of Liaohe oilfield,a ternary combination huff-puff technology of super heavy oil has been discussed in this paper.According to filed situation,four kinds of surface active agent have been compared among boundary tension,frothing percentage,HLB value and compatibility.In the end,2 # surface active agent was selected to be the injecting material.Besides that,a further research and evaluation on oil/water interfacial tension,salt resistance,stability and displacement characteristics have been carried out.The re-sult indicates the mass fraction of 2# surface active agent is 0.1%-0.5%,it has a strong salt resistance and stability,and oil/water interfacial tension could be up to ultralow in-terfacial tension.As a result,the cycle recovery degree could be enhanced 1.73% by the using this kind of stimula-tor.