Published December 2010

Investigation of surface-active properties of horizon oils in some oilfields of Azerbaijan and development of highly efficient compositions for intensification of oil production

R. A. Musayev

S. Z. Djafarli

In the article the activity of oils by the example of separate horizons of some oilfields in Azerbaijan has been defined. The activity of oils has been estimated according to their surface tension values in the water, which has different compositions. It has been determined that the oils of the same named horizons of various oilfields of Apsheron peninsula differ from one another for their activities. Their activity mainly depends on the quantity of naphthenetic acids and pitches in their contents. The presence of asphaltenes in the composition of the oil reduces its activity. By the increase of stratigraphic location depth in the horizon border, surface activity of oil increases. Solution of chemical substance and influences of their compositions on surface tension on the border of the oils which have various activity, have been studied. It is also determined that change of interphase tension value depends on componential structure of chemical substances dissolved in sea water. According to interphrase tension composition of hydrocarbon liquid has essential influence on creation of synergetic effect.