ANALYSIS OF OIL RESERVES PRODUCTION AT THE BP8 DEVELOPMENT OBJECT OF THE TARASOVSKOYE OIL AND GAS CONDENSATE FIELD

Abstract

Based on the example of the analysis of the development of the oil facility BP8 of the Tarasovskoye oil and gas condensate field, geological and technological factors that can cause a low current oil recovery factor with a high water cut of the product are considered. It is assumed that: 1) the low waterflood coverage coefficient is associated with artificial fracturing at the initial stage of development which led to a change in the type of reservoir from primary pore to porous-fractured; 2) a decrease in the displacement coverage coefficient is associated with the permeability heterogeneity of the object; 3) swelling of clay particles under the influence of injected fresh water led to a decrease in the displacement coefficient. An analysis of the development of the facility shows that without the use of new effective technological solutions for involving in the development of capillary-pinched oil reserves of the porous-fractured reservoir of the BP8 object, the final technological oil recovery factor will not exceed 0.240 instead of the approved 0.425. To increase development efficiency, it is recommended to carry out pilot work on drilling horizontal wells with multi-stage hydraulic fracturing, equipped with inflow control devices based on intelligent inflow indicators.