"REPORTER of the Association of Drilling Contractors" N 1, 2012

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.


 

 

 

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