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Through the laboratory experiment, the foaming properties of six kinds of foaming agent was evaluated comprehensively. Through the primary selection, foaming agent concentration selection and salt tolerance evaluation, HY-2 foaming agent was selected in follow-up experiments. The Liquid viscosity effect for foaming performance showed that there exists an optimal value of the liquid viscosity, corresponding to the concentration of foam stabilizing agent should not be less than 700mg/l. The impact of temperature on the performance of foaming agent was mainly on the foam stability, the higher the temperature, the stability of the bubble the worse. Due to the presence of crude oil, foaming volume and stability of the foam appeared a downward trend, the character of which is very advantageous to adjust fluidity difference between the layers of high permeable formation and low permeable formation.

Oily sludge mainly comes from well site and precipitation tank in gathering point. It is very harmful to oilfield environment and has been a problem of oilfields for a long time. On the base of analyses of the composition solid content of oily sludge in Shengli oilfield, a profile control agent has been developed. Plugging property evaluation experiment showed that this kind of profile control agent possessed core plugging ratio above 99 percent and breakthrough pressure above 10 MPa. So it has higher plugging strength. Parallel core experiment showed that most of the profile control agent is injected into the high permeability zone, for the reservoir whose permeability contrast is above 7, and the harm of profile control agent to low permeability zone is below 15 percent. This oily sludge profile control agent can be used in profile controlling of waterflood input well and steam blocking of thermal production well, this technology will have a good effect in field application.