Estimation of fracture system parameters for reservoir rocks in the Republic of Tatarstan based on oriented core analysis and downhole imaging tool data

Authors: K.M. Musin, R.R. Singatullina, V.M. Khusainov (TatNIPIneft, RF, Bugulma), R.S. Khisamov, R.Sh. Dinmukhamedov (Tatneft OAO, RF, Almetyevsk)

Key words: carbonate reservoir, fracture system, oriented core, micro-conductivity imaging tool (MCI).

Carbonate reservoirs are, for the most part, naturally fractured which creates additional structural heterogeneity and has a significant effect on oil recovery pattern. Fracture system parameters are determined using direct methods (core material analysis) and by open-hole well logging. Only combined application of modern well logging and core analysis techniques can ensure a reliable characterization of such reservoirs. The resulting data will enable a detailed description of carbonate reservoir structure and will be considered while drilling new wells and reservoir development planning.

References
1. Bagrintseva K.I., Usloviya formirovaniya i svoystva karbonatnykh kollektorov nefti i gaza (Conditions for the formation and properties of oil and gas carbonate reservoirs), Moscow: Publ. of VNIGNI, 1999, 283 p.
2. Morozov V.P., Kozina E.A., Atlas porod osnovnykh neftenosnykh gorizontov
paleozoya Respubliki Tatarstan. Karbonatnye porody turneyskogo yarusa nizhnego karbona (Atlas of the main oil-bearing rocks of the Paleozoic horizons of the Republic of Tatarstan. Carbonate rocks of Tournaisian stage of the Lower Carboniferous), Kazan': Gart Publ., 2007, 200 p.

Key words: carbonate reservoir, fracture system, oriented core, micro-conductivity imaging tool (MCI).

Carbonate reservoirs are, for the most part, naturally fractured which creates additional structural heterogeneity and has a significant effect on oil recovery pattern. Fracture system parameters are determined using direct methods (core material analysis) and by open-hole well logging. Only combined application of modern well logging and core analysis techniques can ensure a reliable characterization of such reservoirs. The resulting data will enable a detailed description of carbonate reservoir structure and will be considered while drilling new wells and reservoir development planning.

References
1. Bagrintseva K.I., Usloviya formirovaniya i svoystva karbonatnykh kollektorov nefti i gaza (Conditions for the formation and properties of oil and gas carbonate reservoirs), Moscow: Publ. of VNIGNI, 1999, 283 p.
2. Morozov V.P., Kozina E.A., Atlas porod osnovnykh neftenosnykh gorizontov
paleozoya Respubliki Tatarstan. Karbonatnye porody turneyskogo yarusa nizhnego karbona (Atlas of the main oil-bearing rocks of the Paleozoic horizons of the Republic of Tatarstan. Carbonate rocks of Tournaisian stage of the Lower Carboniferous), Kazan': Gart Publ., 2007, 200 p.



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