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Seismic facies analysis for reservoir prediction in a low drilling maturity conditions

UDK: УДК 550.83.01
Key words: seismic facies analysis, reservoir prediction, Tyumen formation
Authors: T.A. Kononova, T.A. Nesterova, E.S. Latypova (TNNC LLC, RF, Tyumen)
The study is dedicated to the reservoir prediction specificity based on drilling, core and seismic data in a low drilling maturity conditions. The study area (800 km2) is covered with 3D seismics. Drilling maturity is low and irregular and composes 1 well per 200 km2.В  Apart from this the southern part of the area (about 420 km2) has no wells.В  The object of the study is J2 layer of Tyumen formation – regional oil-bearing formation. The genesis of the layer is continental in its lower part and coastal-marine in its upper part. The sedimentation specificity has determined a complex configuration and lateral heterogeneity of the reservoir. In these conditions conventional seismic opportunities, seismic facies analysis particularly is the optimal decision for geological risks mitigation. Results of the study are litho-facial map, zones of supposed reservoir distribution, net reservoir map. The described method is supposed to be advanced based on drilling results and used within the similar areas.
References
1. Malyarova T.N., Seismic facies analysis as a universal means of understanding
the structure of reservoir (In Russ.), Tekhnologii seysmorazvedki, 2007, no. 2,
pp. 79–87.
2. Pukharev V.A., Potapova E.A., Malinovskaya O.I., Primenenie klassifikatsionnykh
algoritmov pri sedimentologicheskom modelirovanii (The use of classification
algorithms for sedimentological modeling), Oil&Gas Journal Russia,
2012, January-February, pр. 55–59.
3. Safonov V.G., Zervando K.Yu., Development of exploration project in the
Uvat Area, south of Western Siberia (In Rus..), Nauchno-tekhnicheskiy vestnik
OAO “NK “Rosneft'”, 2015, no. 3, pp. 10–13.
4. Finogenova A.S., Zervando K.Yu., Prediction of channel sandstone spreading
in Middle Jurassic deposits on the basis of seismic-facial analysis (In Russ.),
Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy,
2013, no. 3, pp. 28–33.
5. Muromtsev V.S., Elektrometricheskaya geologiya peschanykh tel – litologicheskikh
lovushek nefti i gaza (Electrometric geology of sand bodies -
lithologic traps of oil and gas), Leningrad: Nedra Publ., 1984, 260 p.
6. Reading, H.G., Sedimentary environment and facies, Blackwell Scientific
Publication, 1986, 615 p.
7. Musatov I.V., Zverev K.V., Vizualizatsiya drevnikh ruslovykh sistem plastov
Yu2-4 Tsentral'nogo Uvata po seysmicheskim dannym na osnove spektral'noy
dekompozitsii (Visualization of ancient fluvial systems of layers YU2-4 of Central
Uvat on seismic data based on spectral decomposition), Tyumen': Publ.
of EAGE, 2013; http://www.earthdoc.org/publication/publicationdetails/?
publication=67201.
The study is dedicated to the reservoir prediction specificity based on drilling, core and seismic data in a low drilling maturity conditions. The study area (800 km2) is covered with 3D seismics. Drilling maturity is low and irregular and composes 1 well per 200 km2.В  Apart from this the southern part of the area (about 420 km2) has no wells.В  The object of the study is J2 layer of Tyumen formation – regional oil-bearing formation. The genesis of the layer is continental in its lower part and coastal-marine in its upper part. The sedimentation specificity has determined a complex configuration and lateral heterogeneity of the reservoir. In these conditions conventional seismic opportunities, seismic facies analysis particularly is the optimal decision for geological risks mitigation. Results of the study are litho-facial map, zones of supposed reservoir distribution, net reservoir map. The described method is supposed to be advanced based on drilling results and used within the similar areas.
References
1. Malyarova T.N., Seismic facies analysis as a universal means of understanding
the structure of reservoir (In Russ.), Tekhnologii seysmorazvedki, 2007, no. 2,
pp. 79–87.
2. Pukharev V.A., Potapova E.A., Malinovskaya O.I., Primenenie klassifikatsionnykh
algoritmov pri sedimentologicheskom modelirovanii (The use of classification
algorithms for sedimentological modeling), Oil&Gas Journal Russia,
2012, January-February, pр. 55–59.
3. Safonov V.G., Zervando K.Yu., Development of exploration project in the
Uvat Area, south of Western Siberia (In Rus..), Nauchno-tekhnicheskiy vestnik
OAO “NK “Rosneft'”, 2015, no. 3, pp. 10–13.
4. Finogenova A.S., Zervando K.Yu., Prediction of channel sandstone spreading
in Middle Jurassic deposits on the basis of seismic-facial analysis (In Russ.),
Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy,
2013, no. 3, pp. 28–33.
5. Muromtsev V.S., Elektrometricheskaya geologiya peschanykh tel – litologicheskikh
lovushek nefti i gaza (Electrometric geology of sand bodies -
lithologic traps of oil and gas), Leningrad: Nedra Publ., 1984, 260 p.
6. Reading, H.G., Sedimentary environment and facies, Blackwell Scientific
Publication, 1986, 615 p.
7. Musatov I.V., Zverev K.V., Vizualizatsiya drevnikh ruslovykh sistem plastov
Yu2-4 Tsentral'nogo Uvata po seysmicheskim dannym na osnove spektral'noy
dekompozitsii (Visualization of ancient fluvial systems of layers YU2-4 of Central
Uvat on seismic data based on spectral decomposition), Tyumen': Publ.
of EAGE, 2013; http://www.earthdoc.org/publication/publicationdetails/?
publication=67201.


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