FIELD: oil and gas industry.
SUBSTANCE: method involves determination of integral hydrodynamic characteristics as per drill hole hydrodynamic research (DHR) results, measurement of flow rate and calculation of filtration properties of each formation, and then, depending on well operating conditions, the following actions are taken: according to Version 1, as per DHR curves in an open shaft there evaluated are ratios of porosities 
and effective thicknesses of formations; based on integral skin factor value determined as per DHR and value α, skin factors and permeability of each formation are calculated. According to Version 2, records of acoustic logging and thermometry are fixed in the well, as per which height and width of formation hydraulic fracturing (FHF) is evaluated and skin factors of each formation are calculated. According to Version 3, when performing DHR, time variation curves of flow rate of each formation and difference of flow rates are recorded; average rate of change of flow rate difference is determined, as per which skin factor and permeability of formations is evaluated.
EFFECT: improving evaluation reliability of individual filtration properties of each of the jointly operated oil formations considering mutual influence of formations on each other, as well as considering differences of skin factors of formations.
3 cl, 4 dwg
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