Exploration of single reefs – as the backup to maintain oil production in the Kama-Kinel downwarp system

Authors: Yu.I. Nikitin (TNNC LLC), S.V. Оstapenko (ТNК-ВР Management OJSC), N.А. Bachurin (Orenburgneft OJSC)
It is marked that Upper Devonian 150-200 m high single reefs are mapped by 3D seismic along the southern edge of the Mukhanovo-Erokhov trough. It is shown that smaller areas of reef pinnacles and significant depths of their occurrence do not allow locating of the structures by 2D seismic. Drilling exploratory wells identifies that commercial oil-fields are confined to single reefs. Assumption is made that by the analogy with well-known world’s basins the Upper Devonian reef pinnacles in the Kama-Kinel downwarp system can control major oil accumulation zones, exploration of which will provide the backup for oil production reserve base replacement.
It is marked that Upper Devonian 150-200 m high single reefs are mapped by 3D seismic along the southern edge of the Mukhanovo-Erokhov trough. It is shown that smaller areas of reef pinnacles and significant depths of their occurrence do not allow locating of the structures by 2D seismic. Drilling exploratory wells identifies that commercial oil-fields are confined to single reefs. Assumption is made that by the analogy with well-known world’s basins the Upper Devonian reef pinnacles in the Kama-Kinel downwarp system can control major oil accumulation zones, exploration of which will provide the backup for oil production reserve base replacement.


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