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Sedimentological and lithogenetic factors determining the reservoir properties of terrigenous rocks

Authors: V.A. Shmyrina KogalymNIPIneft Branch of LUKOIL-Engineering LLC in Tyumen, RF, Tyumen), V.P. Morozov, A.I. Bakhtin (Kazan (Volga Region) Federal University, RF, Kazan)

Key words: secondary changes, collector, lithogenesis, oil sands, sedimentogenesis.

Objects of research were oil productive layers of Lower Cretaceous and Upper Jurassic age of the Kustovoye field in Western Siberia. Deposits are presented by the terrigenous rocks which are structurally similar but differ in reservoir properties. The article presents statistical processing of the granulometric analysis data, sediments’ porosity, permeability, and the percentage of clay minerals.

For definition of various factors influence on reservoir properties we plotted several graphics and carried out a statistical processing of analytical data. It allowed to estimate a role of each of them.

The received results allow to estimate a role of two major factors controlling reservoir properties of detrital sediments such as sedimentagenous- catagenetic factor and secondary changes of the imposed character. The most important factor is the kaolinitization. The results should be considered when conducting prospecting works.
References
1. Lebedev B.A., Aristova G.B., Bro E.G., Effect of epigenetic processes on the collectors and cap rock parameters in the Mesozoic sediments of the West
Siberian Lowland (In Russ), Proceedings of VNIGRI, 1976, V. 361, 132 p.
2. Nurgalieva N.G., Korolev E.A., Nuriev A.G. et al., Lithologic-mineralogical changes of terrigene reservoir rocks in natural hydrocarbon reservoirs (In Russ.), Geologiya nefti i gaza – The journal Oil and Gas Geology, 2010, no. 1, pp. 23-26.
3. Predtechenskaya E.A., Shiganova O.V., Fomichev A.S., Catagenetic and hydrochemical anomalies in Lower-Middle Jurassic oil-and-gas bearing deposits in West Siberia as indicators of fluid (In Russ.), Litosfera, 2009, no. 6, pp. 54-65.
4. Ezhova A.V., Conditions of formation of the void space in the Terrigenous
reservoirs of hydrocarbon-bearing fields in the western part of the Tomsk region (In Russ.), Izvestiya vuzov. Neft' i gaz, 2007, no. 1, pp. 13-19.
5. Nedolivko N.M., Ezhova A.V., Perevertaylo T.G., Polumogina E.D., The influence of granulometric and mineralogical composition on the reservoir properties formation of the sandstone layer in western Moiseyevsky section,
Dvurechensky field (Tomsk oblast) (In Russ.), Izvestiya Tomskogo politekhnicheskogo universiteta - Bulletin of the Tomsk Polytechnic University, 2004, V. 307, no. 5, pp. 48-54.
6. Popov A.Yu., Vakulenko L.G., Relations of the composition and structure
characteristics of silt-sand deposits of the J2 horizon of the Shirotnoe Priobie and reservoir quality (In Russ.), Interekspo Geo-Sibir', 2014, V. 2, no. 1, pp. 120-124.
7. Sakhibgareev R.S., Vtorichnye izmeneniya kollektorov v protsesse
formirovaniya i razrusheniya neftyanykh zalezhey (Secondary changes of collectors in the formation and destruction of oil deposits), Leningrad: Nedra
Publ., 1989, 260 p.
8. Kudamanov A.I., Skachek K.G., The effect of sedimentation and lithogenesis environments on the reservoir properties of the neocomian sediments within the Surgut arch (Western Siberian plate) (In Russ.), Georesursy – International Journal of Sciences “Georesources”, 2008, no. 5, pp. 40-43.
9. Mukhametshin R.Z., Desyatkov V.M., Supercollectors in the mid-Cambrian
siltstone-sand beds (In Russ.), Geologiya, geofizika i razrabotka neftyanykh i
gazovykh mestorozhdeniy, 2006, no. 8, pp. 56-59.

Key words: secondary changes, collector, lithogenesis, oil sands, sedimentogenesis.

Objects of research were oil productive layers of Lower Cretaceous and Upper Jurassic age of the Kustovoye field in Western Siberia. Deposits are presented by the terrigenous rocks which are structurally similar but differ in reservoir properties. The article presents statistical processing of the granulometric analysis data, sediments’ porosity, permeability, and the percentage of clay minerals.

For definition of various factors influence on reservoir properties we plotted several graphics and carried out a statistical processing of analytical data. It allowed to estimate a role of each of them.

The received results allow to estimate a role of two major factors controlling reservoir properties of detrital sediments such as sedimentagenous- catagenetic factor and secondary changes of the imposed character. The most important factor is the kaolinitization. The results should be considered when conducting prospecting works.
References
1. Lebedev B.A., Aristova G.B., Bro E.G., Effect of epigenetic processes on the collectors and cap rock parameters in the Mesozoic sediments of the West
Siberian Lowland (In Russ), Proceedings of VNIGRI, 1976, V. 361, 132 p.
2. Nurgalieva N.G., Korolev E.A., Nuriev A.G. et al., Lithologic-mineralogical changes of terrigene reservoir rocks in natural hydrocarbon reservoirs (In Russ.), Geologiya nefti i gaza – The journal Oil and Gas Geology, 2010, no. 1, pp. 23-26.
3. Predtechenskaya E.A., Shiganova O.V., Fomichev A.S., Catagenetic and hydrochemical anomalies in Lower-Middle Jurassic oil-and-gas bearing deposits in West Siberia as indicators of fluid (In Russ.), Litosfera, 2009, no. 6, pp. 54-65.
4. Ezhova A.V., Conditions of formation of the void space in the Terrigenous
reservoirs of hydrocarbon-bearing fields in the western part of the Tomsk region (In Russ.), Izvestiya vuzov. Neft' i gaz, 2007, no. 1, pp. 13-19.
5. Nedolivko N.M., Ezhova A.V., Perevertaylo T.G., Polumogina E.D., The influence of granulometric and mineralogical composition on the reservoir properties formation of the sandstone layer in western Moiseyevsky section,
Dvurechensky field (Tomsk oblast) (In Russ.), Izvestiya Tomskogo politekhnicheskogo universiteta - Bulletin of the Tomsk Polytechnic University, 2004, V. 307, no. 5, pp. 48-54.
6. Popov A.Yu., Vakulenko L.G., Relations of the composition and structure
characteristics of silt-sand deposits of the J2 horizon of the Shirotnoe Priobie and reservoir quality (In Russ.), Interekspo Geo-Sibir', 2014, V. 2, no. 1, pp. 120-124.
7. Sakhibgareev R.S., Vtorichnye izmeneniya kollektorov v protsesse
formirovaniya i razrusheniya neftyanykh zalezhey (Secondary changes of collectors in the formation and destruction of oil deposits), Leningrad: Nedra
Publ., 1989, 260 p.
8. Kudamanov A.I., Skachek K.G., The effect of sedimentation and lithogenesis environments on the reservoir properties of the neocomian sediments within the Surgut arch (Western Siberian plate) (In Russ.), Georesursy – International Journal of Sciences “Georesources”, 2008, no. 5, pp. 40-43.
9. Mukhametshin R.Z., Desyatkov V.M., Supercollectors in the mid-Cambrian
siltstone-sand beds (In Russ.), Geologiya, geofizika i razrabotka neftyanykh i
gazovykh mestorozhdeniy, 2006, no. 8, pp. 56-59.


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