Hydrocarbon gas accumulations in Greece and their origin

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Published: Jan 1, 2001
DOI: https://doi.org/10.12681/bgsg.17203
Keywords:
Biogenic gas catagenetic metagenetic oil window gas generation
N. RIGAKIS
Hellenic Petroleum S.A., Exploration and Production Division
N. ROUSSOS
Hellenic Petroleum S.A., Exploration and Production Division
E. KAMBERIS
Hellenic Petroleum S.A., Exploration and Production Division
P. PROEDROU
Hellenic Petroleum S.A.
Abstract

In the sedimentary basins of Greece are found a lot of hydrocarbon gases that can be distinguished in four categories. Surface gas seeps, gas shows in shallow water-wells, gases in exploration wells and hydrocarbon gas fields. The main gas shows are mainly located inside recent clastic sediments. Hydrocarbon amount varies between a few ppm and several units percent. Gases are classified in the biogenic gases of Katakolo onshore gas-field, the most surface gas seeps and the gases at shallow depths of exploration wells. Catagenetic are the gases of Katakolo oil field, the Epanomi and South Kavala gas fields, and a lot of gases found in great depths of exploration wells. Metagenetic gases have been identified in Delta Evros and West Thermaikos.

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  • Energy Resources
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