--> Abstract: Unconventional (Shale Oil or Gas) Petroleum Systems of the Eastern Canadian Paleozoic Sedimentary Basins: Effects of Organic Facies, Organic-Mineral Network, and Maturation, by Prasanta K. Mukhopadhyay; #90124 (2011)

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AAPG ANNUAL CONFERENCE AND EXHIBITION
Making the Next Giant Leap in Geosciences
April 10-13, 2011, Houston, Texas, USA

Unconventional (Shale Oil or Gas) Petroleum Systems of the Eastern Canadian Paleozoic Sedimentary Basins: Effects of Organic Facies, Organic-Mineral Network, and Maturation

Prasanta K. Mukhopadhyay1

(1) Global Geoenergy Research Limited, Halifax, NS, Canada.

The unconventional (oil and gas shale) petroleum systems of the Eastern Canadian Paleozoic Sedimentary Basins includes the Devonian-Ordovician marine black shale sequences from Ontario; Lower/Upper Ordovician marine Green Point and Utica Group sediments from Newfoundland and Quebec, and the Mississippian (Tournaisian and Visean - lacustrine and marine) or Pennsylvanian (Bashkirian - fluviodeltaic and lacustrine) organic rich shales from the Maritimes Basin (Western Newfoundland, Nova Scotia, and New Brunswick). The amount of oil or gas content and the formation of pore networks of these organic rich kerogen Type I, II, II-III source rocks are controlled by variability in organic facies components (labile versus inert), maturity, organo-mineralogical complexes, and stress patterns. Each of the petroleum systems are associated with an impermeable seal, the amount of extractable liquid and gaseous hydrocarbons within the hybrid shale and siltstone sequences.

The characteristics of adsorbed and free oil or gas of these individual petroleum systems from the Ordovician to Pennsylvanian sediments may indicate possible presence of parallel gas and liquid adsorptions within the labile and inert phases of the organics in association within carbonate and clay matrix. This data may suggest possible presence of multiplayer adsorptions of oil and gas within individual units. This data defines the maturation time sequences of free oil to gas adsorptions to their relationship with the organic facies variability and mineral-bituminous network species.