Research of surfactant application for intensification of oil production at the final stage of field development

Abstract

The effectiveness of the bottomhole formation zone treatment with surfactants depends on many factors occurring
when a specific method of intensification applied.
The main criterion for surfactant selection for their use to increase oil recovery is oil-sweeping property. During
selecting surfactants with high indices of oil displacement or research of surfactant application for certain oil
fields, it was determined that even under the same conditions different typed of oil were washed out with a surfactant
solution from threshold oil reservoir in a different way.
The oil-sweeping property of naftazol, a new surfactant solution, during the bottomhole formation zone treatment,
was studied. The research was carried out for different technologies and mass content of surfactant in the
process solution. For the bottomhole formation zone treatment in order to improve well production aqueous solution
naftazol with mass concentration of 5%, with split 0.6:0.4 and 0.05 % aqueous solution naftazol with split
0.6:0.4 with the 0.03% PAA polymer addition.
The technology of the bottomhole formation zone treatment with aqueous naftazol was developed.