ISSN 1608-5078 (Online)
Development of Above-Cenomanian Unconventional Reservoirs during Exploration Stage. Involvement of Resource Base of Gazprom Gas Fields in Yamal- Nenets Autonomous District
V.V. Cherepanov, Yu.I. Pyatnitskiy, D.Ya. Khabibullin, N.R. Sitdikov, S.A. Varyagov, S.V. Nersesov, D.Yu. Oglodkov
Increment of resource base in managed areas with developed infrastructure is cost-effective, preferred option to prolong life of gas fields. Therefore, the study of industrial potential of Above-Cenomanian deposits (Lower- Berezovsky subsuite) of Medvezhy field is defined as the priority area for hydrocarbons search by LLC Gazprom Dobycha Nadym. High economic efficiency is also predetermined by relatively small depth (less than 1100 m) of productive horizons and transfer possibility of production wells from the lower horizons. Area of Above-Cenomanian deposits is assessed by 3D CDP method and is more than 2.5 thousand km2, which exceeds the area of Cenomanian gas field (LLC TyumenNIIGiprogaz). Gas resources in Medvezhy field are preliminary estimated as 890 billion m3. Presence of unique reserves of gas accumulation in Above-Cenomanian sediments of Medvezhy Arch is also assured. At the moment, prospecting and evaluation works in Cenonian deposits are updated within the Medvezhy license area (LLC Gazprom Geologorazvedka). The major corrective actions are adopted based on the performed works. Further exploration of Above- Cenomanian deposits of Medvezhy field shall consist of: adjustment of bottom-holes, structure and direction of planned horizontal wells, well logging, parameters of process fluids used at the initial drilling, hydraulic fracturing.
Cenonian deposits, Above-Cenomanian deposits, Lower-Berezovsky subsuite, Gazsalinsky assise, Gankinsky deposits, Medvezhy field, unconventional reservoir, montmorillonite
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JSCo «Gazprom», Moscow, Russia
LLC «Gazprom Dobycha Nadym», Nadym, Russia
Cherepanov V.V., Pyatnitskiy Yu.I., Khabibullin D.Ya., Sitdikov N.R., Varyago S.A. v, Nersesov S.V., Oglodkov D.Yu. Development of Above-Cenomanian Unconventional Reservoirs during Exploration Stage. Involvement of Resource Base of Gazprom Gas Fields in Yamal- Nenets Autonomous District. Georesursy [Georsources]. № 4(59). 2014. Pp. 59-64.