Оценка пористости карбонатных коллекторов кембрийских надсолевых отложений по данным гис и керна
Estimation of porosity of carbonate reservoirs of Cambrian suprasalt deposits according to well logging and core data
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| Estimation of porosity of carbonate reservoirs of Cambrian suprasalt deposits according to well logging and core data
Diakonova D.V.1, Zemchenkov A.S.2 (STPC ”SENOMAN”1, Gazprom EP International B.V.2) Abstract The article considers a method for evaluating the capacitance properties of mixed-type carbonate reservoirs. The carbonate rocks (dolomites) of the suprasalt deposits of the Metegerskaya, Icherskaya and Charskaya formations of the Vostochno-Alinsky deposit were studied. To determine the porosity by well-logging methods, various methods were used: neutron, acoustic and lateral (according to the resistance of the reservoir and reservoir water). The density curve (Gardner's equation) is determined from the empirical dependence of reservoir velocities. It is established that the porosity spread has an uneven character, which is usually characteristic of a fractured or mixed type of reservoir. Nevertheless, the quantitative values determined by different methods are close to each other. The obtained data may be relevant for the assessment of groundwater reserves at hydrocarbon deposits in this region. Keywords: East Siberia, Vostochno-Alinsky field, well-logging, second porosity, carbonate reservoir References Godovogo maximuma dobychi nefti v Vostochnoi Sibiri dostig “Surgutneftegaz” v 2020 godu. Available at: https://oilcapital.ru/news/companies/09-06-2021/godovogo-maksimuma-dobychi-nefti-v-vostochnoy-sibiri-dostig-surgutneftegaz-v-2020-godu (accessed 2 June 2021). Dakhnov V.N., Interpretation of the results of geophysical investigations of well sections, Moscow: Nedra Publ., 1982, 448 p. Zemchenkov A.S, Savchenko N.V. Triune approach to the study of reservoir properties of terrigenous sediments of the Eastern Siberian Vendian, subjected to post-sedimentation salinization. Proc. 1st International Scientific conference “Studies of Petroleum Reservoir Systems: Challenges & Prospects (SPRS-2016)”. Gazprom VNIIGAZ, 2016, p. 120. (In Russ.). Maraev I.A. Complex interpretation of geophysical research results. Manual. – M.: MGRI_RGGRU, 2013. – 95 p. Nedolivko N.M., Ezhova A.V. Petrographic researches of terrigenous and carbonate breeds collectors: manual. – Tomsk: Publishing house of the Tomsk polytechnical university, 2012. – 172 p. Smekhov E.M., Dorofeeva T.V. Vtorichnaya poristost’ gornykh porod-kollektorov nefti i gaza [Secondary porosity of oil and gas rock reservoirs]. St. Petersburg: Nedra Publ., 1987. 96 p. (In Russ.). Archie, G.E., 1942: The electrical resistivity log as an aid in determining some reservoir characteristics. – Trans. AIME, 146, S. 54 –62 (also in: Trans. SPE, 1941, 146). Ellis, Darwin V.; Singer, Julian M. (2008). Well Logging for Earth Scientists (Second ed.). Springer. pp. 692. ISBN 978-1-4020-3738-2. Gardner G.H.F., Gardner L.W., Gregory A.R. Formation velocity and density – The diagnostic basics for stratigraphic traps. – Geophysics, 1974. – V. 39. – № 6. – P. 1603–1615. жүктеу/скачать 1.25 Mb. Достарыңызбен бөлісу:
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