METHOD FOR DETERMINING TECHNOLOGICAL EFFICIENCY OF PROCEDURES FOR INCREASING OIL OUTPUT FROM BEDS Russian patent published in 1997 - IPC

FIELD: oil production industry. SUBSTANCE: according to method, determined through time intervals are actual and accumulated oil yields prior to applying procedures for increasing oil output. Then determined are predicted accumulated oil yields by extrapolation for period of applying procedures for increasing oil output of actual data concerning oil output prior to applying procedure for increasing oil output. Efficiency of procedures for increasing oil output is determined according to actually accumulated output of oil for period of applying procedures for increasing oil output in comparison with predicted accumulated output. In that, actual current and accumulated oil output is determined at monthly interval from start of developing deposit. Then plotted is curve of accumulated oil output versus time, determined is time of starting reduction in actual oil yield and this is assumed as start of base period. Time of starting reduction of actual oil output is found by determining time corresponding to point of bending in curve of accumulated oil output versus time by unifying determination of base period. EFFECT: high efficiency. 5 dwg