In order to solve gas channeling and injected gas fingering problems in heavy oil steam stimulation wells, high pressure plugging control and cleanup additive is developed based on lab test, its performance test showed that it can be field tested.

In this paper,these surfactants TA83,PE2040,OS-15 and JFC were screened out,and through the orthogonal test we obtained cleanup additive FRP.

Influences of surface tension of acid solution and contact angle of rock on the cleanup efficiency of surfactant;

Finally the relationship between the wettability,the surface tension and the cleanup efficiency of OP non-ionic surfactant in 20% HCl is discussed.

Research on high temperature acidizing cleanup additive HC2-1;

Performance evaluation and application of high effective foaming cleanup additive (JX-YL) for fracturing fluids;

In the field,it can be used as a cleanup additive to discharge the residual fluid fast and enhance the oil recovery.

Study and field application of acoustic assistant drainage and broken-down technology.;

A novel efficient flow back technology was developed that integrated liquid nitrogen cleanup, fibre sand control with open flow optimization technology through many years exploration and research.