Kontorovich info 5.2018 | oilandgasgeology

Якорь 1

A.E. Kontorovich, S.V. Rodyakin, L.M. Burshtein, E.A. Kostyreva, S.V. Ryzhova, P.A. Yan

Porosity and oil saturation of pore space in the Bazhenov Formation rocks

DOI 10.31087/0016-7894-2018-5-61-73

Regularities of open porosity and oil saturation distribution in the Bazhenov rocks are studied. Primary cavitation in the Bazhenov Fm is of a secondary nature; it is formed as a result of kerogene destruction during catagenesis with generation of liquid and gaseous products. Oil saturated near-horizontal fracture-like (foliation) and vuggy porous volume capacities were formed as a result of sequential lithogenesis processes in the formation rocks. Porosity of the Bazhenov rocks is determined by OM catagenesis level. In the zones where OM catagenesis reached the main stage of oil generation (second half of MK1_1 level, МК2_1 level, МК_2), open porosity of rocks varies from fractions of a percent to 12 %; at the same time, a trend of maximum open porosity values growth with the increase of organic carbon concentration in the rocks is clearly observed. In the zones where OM catagenesis in the Bazhenov reached MK1_1 level, beginning of МК2_1 level, open porosity of rocks ranges from fractions of a percent to 8 %; in the zone where MK1_1 level of catagenesis is reached, porosity doesn’t exceed 4 %. Regularities of oil saturation variations in open porosity were studied. In the oil window (MK1_1 , МК2_1 , МК_2 levels), oil saturation exceeding 0.75 predominates. In the zones where catagenesis reached MK1_1 level, beginning of МК2_1 level, oil saturation of open pore space doesn’t exceed 0.5. In the zones with MK1_1 level of catagenesis, oil saturation of open pore space is below 0.3 %. Map of oil saturation of the Bazhenov rocks is created.

Key words: porosity; oil saturaiton; Bazhenov Formation; West Siberia.

For citation: Kontorovich A.E., Rodyakin S.V., Burshtein L.M., Kostyreva E.A., Ryzhova S.V., Yan P.A. Porosity and oil saturation of the Bazhenov Formation rocks. Geologiya nefti i gaza. 2018;(5):61–73. DOI: 10.31087/0016-7894-2018-5-61-73

References

1. Brindzinskii A.M., Nesterov I.I., Novikov G.R., Salmanov F.K., Tyan A.V., Ushatinskii I.N. Salym Petroleum District. ZapSibNIGNI proceedings. Tyumen; 1970. Issue 41. 314 p.
2. Alekseev A.D., Nemova V.D., Koloskov V.N., Gavrilov S.S. Lithological features of Lower Tutleimsky member structure (Frolovsky Petroleum Area) in the context of its oil-bearing capacity. Geologiya nefti i gaza. 2009;(2):27–33.
3. Gurari F.G., Gurari I.F. Formation of oil pools in the Bazhenov claystone, Western Siberia. Geologiya nefti i gaza. 1974;(5):36–40.
4. Kontorovich A.E., Yan P.A., Zamirailova A.G., Kostyreva E.A., Eder V.G. Classification of rocks of the Bazhenov formation. Russian Geology and Geophysics. 2016;57(11):2034–2043. DOI: 10.1016/j.rgg.2016.10.006
5. Bulynnikova S.P., Gol’bert A.V., Klimova I.G., Kontorovich A.E., Polyakova I.D., Reshetnikova M.A., Turbina A.S. Paleobiofacies of oil bearing Volgian and Neocomian formations of the West Siberian Plate. Moscow: Nedra, 1978. 86 p.
6. Slavkin V.S., Alekseev A.D., Koloskov V.N. Bazhenov Fm in the west of the Latitudinal Ob: certain aspects of geological structure and oil potential. Neftyanoe khozyaistvo. 2007;(8):100–104.
7. Svishchev M.F., Sadykov M.M., Kaptelinin N.D., Yusupov K.S. Hydrodynamic features of the Bazhenov reservoirs in the Salym oil field. Giprotymenyeftegaz proceedings. Tyumen: 1973. Issue 35. pp. 239–252.
8. Nesterov I.I. New type of oil and gas reservoir. Geologiya nefti i gaza. 1979;(9):26–29.
9. Tolstolytkin V.P., Zubarev B.N. Production logging in wells. Neftyanoe khozyaistvo. 1984;(6):38–43.
10. Zheltov Yu.V., Malofeev G.E., Tolstov L.A., Khavkin A.Ya., Moskovtsev O.A., Pogonishchev V.I., Sibgatullin A.S. Substantiation of the Bazhenov Fm structure and productivity features in the Salym filed on the results of wells operation. Geologiya nefti i gaza. 1984;(8):1–6.
11. Stepanov V.P., Akhapkin M.Yu., Tabakov V.P., Pasynkov A.G., Bykov V.V. et al. Bazhenov formation of the Slaym field: main development results and prospects. Geophysics. 2007;(4):211–218.
12. Nemova V.D., Koloskov V.N., Gavrilov S.S., Pokrovsky B.G. Stages and tendency of secondary transformations of reservoir rocks of Lower Tutleim subsuite on the west of Latitudinal Priobie. Geologiya nefti i gaza. 2010;(6):22–28.
13. Nemova V.D., Koloskov V.N., Pokrovskii B.G. Processes of carbonated reservoirs formation within argillaceous-siliceous deposits of the Bazhenov horizon in the west of the the Latitudinal Ob. Razvedka I ohrana nedr. 2011;(12):31–35.
14. Dakhnova M.V., Nazarova E.S., Slavkin V.S., Koloskov V.N., Alekseev A.D. Geochemical methods for solving tasks as concern oil pools development in Bazhenov suite on the west of Latitudinal Priobie. Geologiya nefti i gaza. 2007;(6):39–43.
15. Kontorovich A.E. Quantitative prediction of oil and gas potential: geochemical methods. SNIIGGiMS proceedings. Moscow: Nedra; 1976. Issue 229. 250 p.
16. Kontorovich A.E., Rogozina E.A., Trofimuk A.A. Hydrocarbons expulsion and diagnostics of oil and gas producing sequences. Oil and gas deposits in Mesozoic formations of the West Siberian Lowland: distribution patterns and formation conditions. SNIIGGiMS proceedings.
Moscow: Nedra; 1972. Issue 131. pp. 227–260.
17. Kharin V.S. Role of rocks natural radioactivity in the processes of dispersed organic matter transformation. Geologiya nefti i gaza. 1982;(5):42–45.
18. Vyshemirskii V.S., Kontorovich A.E., Trofimuk A.A. Migration of dispersed bitumoids.IGiG SO AN USSR proceedings. Novosibirsk: Nauka. Sibirskoe otdelenie; 1971. Issue 143. 167 p.
19. Kontorovich A.E., Nesterov I.I., Salmanov F.K. Oil and gas geology of the Western Siberia. Moscow: Nedra; 1975. 679 p.
20. Kontorovich A.E., Rogozina E.A. Amount of hydrocarbon gases generation in Mesozoic formations of the West Siberian Lowland. Geology and hydrocarbon potential in the south-east of the West Siberian Plate. SNIIGGiMS proceedings. Novosibirsk; 1967. Issue 65. pp. 13–25.
21. Korost D.V., Nadezhkin D.V., Akhmanov G.G. Studies of source rock interstitial space in hydrocarbon generation. MSU Journal. Series 4. Geology. 2012;(4):32–37.
22. Petersil’e V.I., Rabits E.G., Kotseruba L.A., Kovalev A.G., Morozivich Ya.R. GOST 26450.1-85 Rocks. Method for determination of open porosity coefficient by fluid saturation. In: Rocks. Methods for reservoir properties determination. GOST 26450.0-85 - GOST 26450.2-85: Sb. GOSTov. Moscow: Izdatel’stvo standartov; 1985. pp. 5–12.

A.E. Kontorovich Scopus