EFFECTS OF DRILLING MUD FILTRATE ON RESIDUAL WATER SATURATION AND PERMEABILITY OF GAS SATURATED RESERVOIRS.
Podgornov, Valery M. – Dr.Tech.Sci., professor  of oil and gas drilling department, the Gubkin State University of Oil and Gas, burenie@gubkin.ru burenie@gubkin.ru
Borozdin, Sergey O. – postgraduate student, oil and gas drilling department, the Gubkin State University of Oil and Gas, borozdin.s@gubkin.ru borozdin.s@gubkin.ru

УДК 622.24
Key words: well completion,  surfactant, physical and chemical interaction, kinetics of capillary imbibition into rocks, relative permeability, surface tension, water saturation of invasion zone.

ПThe paper provides the findings of a research into the gradient of physical and chemical processes of capillary imbibition into low-permeability reservoirs as influenced by surfactant concentration in drilling mud filtrate. The research shows that there is a possibility of regulating the degree of water saturation in filtrate invasion zones.

EFFECTS OF DRILLING MUD FILTRATE ON RESIDUAL WATER SATURATION AND PERMEABILITY OF GAS SATURATED RESERVOIRS.
Podgornov, Valery M. – Dr.Tech.Sci., professor  of oil and gas drilling department, the Gubkin State University of Oil and Gas,  burenie@gubkin.ru
Borozdin, Sergey O. – postgraduate student, oil and gas drilling department, the Gubkin State University of Oil and Gas, borozdin.s@gubkin.ru

Key words: well completion,  surfactant, physical and chemical interaction, kinetics of capillary imbibition into rocks, relative permeability, surface tension, water saturation of invasion zone.

The paper provides the findings of a research into the gradient of physical and chemical processes of capillary imbibition into low-permeability reservoirs as influenced by surfactant concentration in drilling mud filtrate. The research shows that there is a possibility of regulating the degree of water saturation in filtrate invasion zones.