Sedimentary cyclicity in the Lower Devonian carbonate sediments of R. Trebs field

Authors: A.S. Dushin (BashNIPIneft LLC, RF, Ufa)

Key words: carbonate ramp, microfacies, recurrence, secondary changes.

This paper examines the cyclic structure of productive carbonate sediments bearing in mind the ramp depositional model. Different lithotypes depending on the intensity of the secondary dolomitization identified in the sedimentary cyclites. Low dolomitic lithotypes retain primary sedimentary features and meet the standard Flugel microfacies. The layered structure of the carbonate strata due to the manifestation of the high-frequency sedimentation cycles is shown with the new data.

References
1. Kaufman J., Jameson J., Sequence stratigraphy,
facies, and reservoir quality of lower Devonian
carbonates in Roman Trebsa field, Timan-Pechora
basin, C.I.S., SEPM Spetial publication,
2002, no. 74, pp. 43-68.
2. Fedorov A.I., Dushin A.S., Rykus M.V., Neftyanoe
khozyaystvo – Oil Industry, 2012, no. 4, pp. 25-28. 

Key words: carbonate ramp, microfacies, recurrence, secondary changes.

This paper examines the cyclic structure of productive carbonate sediments bearing in mind the ramp depositional model. Different lithotypes depending on the intensity of the secondary dolomitization identified in the sedimentary cyclites. Low dolomitic lithotypes retain primary sedimentary features and meet the standard Flugel microfacies. The layered structure of the carbonate strata due to the manifestation of the high-frequency sedimentation cycles is shown with the new data.

References
1. Kaufman J., Jameson J., Sequence stratigraphy,
facies, and reservoir quality of lower Devonian
carbonates in Roman Trebsa field, Timan-Pechora
basin, C.I.S., SEPM Spetial publication,
2002, no. 74, pp. 43-68.
2. Fedorov A.I., Dushin A.S., Rykus M.V., Neftyanoe
khozyaystvo – Oil Industry, 2012, no. 4, pp. 25-28. 


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