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Hydrocarbon potential of north European platform margins buried below the West Carpathian thrust belt, Czechoslovakia

Conference · · Geobyte; (United States)
OSTI ID:5848247
;  [1];  [2];  [3];  [4]
  1. Geological Survey, Brno (Czechoslovakia)
  2. Chevron Overseas Petroleum, San Ramon, CA (United States)
  3. Geological Survey, Bratislava (Czechoslovakia)
  4. Geofysika, Brno (Czechoslovakia)
+ Show Author Affiliations

Oil was first discovered in what is nor Czechoslovakia in 1914. Most of the production to date has come from the Neogene Vienna basin. During the past few decades, exploration has expanded into more complex terranes. Of these, the broad future zone between the North European platform and the West Carpathian thrust belt has proven to be the most promising. The external zone of the Carpathians is represented by highly deformed Jurassic to lower Miocene flysch deposits thrusted over a relatively shallow Neogene foredeep. Buried below the allochthonous Flysch belt and the Neogene foredeep are various formations of the European platform. These include Paleogene, Cretaceous, and Jurassic sequences of the Tethyan margins; Variscan-consolidated Carboniferous and Devonian carbonate and clastic deposits; and the Cadomian crystalline basement. The tectonically segmented platform dips gradually southeastward below the Carpathian belt. Sedimentary sequences of the European platform represent the main exploration target in the region. Several oil and gas fields have been found in the shallower part of the platform down to depths of 3 km. Reservoirs consists of Neogene and Paleogene clastics, Devonian carbonates, and the weathered surface of the crystalline basement. Organic-rich source rocks are present in Neogene, Paleogene, Jurassic and Devonian sequences. The deeper part of the platform has been little explored. Regional seismic sections show a continuation of sedimentary sequences of the platform down to 10 km below the gravimetric minimum zone. Seismic data also reveal deeper, less displaced structures below the highly deformed thin-skinned Flysch belt southeast of the gravimetric minimum zone.

OSTI ID:
5848247
Report Number(s):
CONF-910978--
Journal Information:
Geobyte; (United States), Journal Name: Geobyte; (United States) Vol. 75:8; ISSN 0885-6362; ISSN GEOBE
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
58 GEOSCIENCES
580000 -- Geosciences
CZECHOSLOVAKIA
DEVELOPING COUNTRIES
EUROPE
EXPLORATION
GEOLOGIC DEPOSITS
GEOLOGIC FAULTS
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
GEOLOGY
MINERAL RESOURCES
NATURAL GAS DEPOSITS
OROGENESIS
PETROLEUM DEPOSITS
PETROLEUM GEOLOGY
RESOURCE POTENTIAL
RESOURCES
SEDIMENTARY BASINS
TECTONICS