ABSTRACT: Seismic facies and depositional framework of Eocene deposits, in Central Romanian Black Sea Offshore. Implications for Hydrocarbon Exploration

Raileanu, Adriana, Dorina Tambrea, V. Sindilar, and V. Borosi , S.N.P. Petrom - S.A.-C.C.P.G, Bucharest, Romania

Studied area sets on Romanian Black Sea offshore, between Heracleea and Capidava - Ovidiu faults, in front of North Dobrogea Orogene and Central Dobrogea. Based on the analysis of 100 intersecting multichannel seismic lines and well data (cores, cuttings, logs, VSP), the Eocene deposits were separated by defining widespread unconformity surfaces and characterized by their distinct internal facies pattern, strata termination, external geometry and also, major lithofacies associated in various depositional systems.

Tectonics and eustacy controlled the sedimentation during the Eocene generating three main facies associations: siliciclastic turbidites, carbonate shelves, and muddy carbonate turbidites.

Siliciclastic turbidites display a distinctly lateral, continuous, medium to high amplitude, concordant or downlapping pattern on the fringe lobe top and represent the main reservoirs.

The carbonate shelf is considered the line source for the muddy carbonate turbidites, which were settled in a small, ponded subbasin. The muddy carbonate facies has a high TOC.

AAPG Search and Discovery Article #90913©2000 AAPG International Conference and Exhibition, Bali, Indonesia