Possibilities of calculating uncompacted sediment thickness by core and logs based on the case study of the Verkhnetyumenskaya subsuite deposits

Authors: А.I. Kudamanov, O.S. Generalenko, O.А. Khokhrina (TNNC LLC, RF, Tyumen)

Key words: sillicioclastic sediment, compaction, fine-grained deposits, reconstruction, paleorelief, sedimentation.

In reconstructing the paleorelief in the sedimentary section one can come to erroneous conclusions and incorrect predictions of reservoir and seal bodies distribution without accounting for sharply varying degree of compaction of shale (in 3-4 times) and sand (only by 15-20%) sediments. The paper presents some methods and results of conversion of present-day thickness into uncompacted thickness (as of the time of sedimentation) by core and logs (SP log) based on the case study of the Verkhnetyumenskaya subsuite in the south-west of Western Siberia.

References

1. Ezhova A.V., Litologiya: uchebnoe posobie (Lithology: Textbook), Tomsk: Publ. of Tomsk Polytechnic University, 2005, 353 p.

2. Kudamanov A.I., Vologin S.V., Abstracts of scientific and practical conference ”Sovremennye vyzovy pri razrabotke i obustroystve mestorozhdeniy nefti i gaza Sibiri” (Modern challenges in the design and arrangement of oil and gas fields of Siberia), Tomsk, 2011, pp. 191-192.

3. Kudamanov A.I., Vologin S.V., Materials of XIV scientific conference ”Puti realizatsii neftegazovogo i rudnogo potentsiala KhMAO-Yugry” (Ways of implementation of oil and gas and ore potential of the KhMAO - Ugra), Khanty-Mansiysk, 2011, V. 2, pp. 241-249.

4. Lebedev B.A., Geokhimiya epigeneticheskikh protsessov v osadochnykh basseynakh (Geochemistry of epigenetic processes in sedimentary basins), Leningrad: Nedra Publ., 1992, 239 p.

5. Muromtsev V.S., Elektrometricheskaya geologiya peschanykh tel – litologicheskikh lovushek nefti i gaza (Electrometric geology of sand bodies - lithologic oil and gas traps), Leningrad: Nedra Publ., 1984, 260 p.

6. Reshenie 6 Mezhvedomstvennogo stratigraficheskogo soveshchaniya po rassmotreniyu i prinyatiyu utochnennykh stratigraficheskikh skhem mezozoyskikh otlozheniy Zapadnoy Sibiri (The decision of the 6th Interdepartmental Stratigraphic Meeting on the consideration and adoption of revised Mesozoic stratigraphic schemes of Western Siberia), Novosibirsk, 2003 g., Publ. of SNIIGGiMS, 2004, 114 p.

7. Romanovskiy S.I., Sedimentologicheskie osnovy litologii (Sedimentological basis of lithology), Leningrad: Nedra Publ., 1977, 408 p.

8. Sokolov V.N., Sorosovskiy obrazovatel'nyy zhurnal, 1998, no. 7, pp. 83-88.

9. Sokolov V.N., Sorosovskiy obrazovatel'nyy zhurnal, 2000, no. 9, pp. 59-65.

Key words: sillicioclastic sediment, compaction, fine-grained deposits, reconstruction, paleorelief, sedimentation.

In reconstructing the paleorelief in the sedimentary section one can come to erroneous conclusions and incorrect predictions of reservoir and seal bodies distribution without accounting for sharply varying degree of compaction of shale (in 3-4 times) and sand (only by 15-20%) sediments. The paper presents some methods and results of conversion of present-day thickness into uncompacted thickness (as of the time of sedimentation) by core and logs (SP log) based on the case study of the Verkhnetyumenskaya subsuite in the south-west of Western Siberia.

References

1. Ezhova A.V., Litologiya: uchebnoe posobie (Lithology: Textbook), Tomsk: Publ. of Tomsk Polytechnic University, 2005, 353 p.

2. Kudamanov A.I., Vologin S.V., Abstracts of scientific and practical conference ”Sovremennye vyzovy pri razrabotke i obustroystve mestorozhdeniy nefti i gaza Sibiri” (Modern challenges in the design and arrangement of oil and gas fields of Siberia), Tomsk, 2011, pp. 191-192.

3. Kudamanov A.I., Vologin S.V., Materials of XIV scientific conference ”Puti realizatsii neftegazovogo i rudnogo potentsiala KhMAO-Yugry” (Ways of implementation of oil and gas and ore potential of the KhMAO - Ugra), Khanty-Mansiysk, 2011, V. 2, pp. 241-249.

4. Lebedev B.A., Geokhimiya epigeneticheskikh protsessov v osadochnykh basseynakh (Geochemistry of epigenetic processes in sedimentary basins), Leningrad: Nedra Publ., 1992, 239 p.

5. Muromtsev V.S., Elektrometricheskaya geologiya peschanykh tel – litologicheskikh lovushek nefti i gaza (Electrometric geology of sand bodies - lithologic oil and gas traps), Leningrad: Nedra Publ., 1984, 260 p.

6. Reshenie 6 Mezhvedomstvennogo stratigraficheskogo soveshchaniya po rassmotreniyu i prinyatiyu utochnennykh stratigraficheskikh skhem mezozoyskikh otlozheniy Zapadnoy Sibiri (The decision of the 6th Interdepartmental Stratigraphic Meeting on the consideration and adoption of revised Mesozoic stratigraphic schemes of Western Siberia), Novosibirsk, 2003 g., Publ. of SNIIGGiMS, 2004, 114 p.

7. Romanovskiy S.I., Sedimentologicheskie osnovy litologii (Sedimentological basis of lithology), Leningrad: Nedra Publ., 1977, 408 p.

8. Sokolov V.N., Sorosovskiy obrazovatel'nyy zhurnal, 1998, no. 7, pp. 83-88.

9. Sokolov V.N., Sorosovskiy obrazovatel'nyy zhurnal, 2000, no. 9, pp. 59-65.


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