Prasanta K.(Muki) Mukhopadhyay1,
John A. Wade2,
Michael A. Kruge3
(1) Global Geosciences Research Ltd, Halifax, NS
(2) GSC, Atlantic Dartmouth, NS
(3) SIU, Carbondale, IL
Abstract: Petroleum system of the Scotian Basin, offshore Eastern Canada and its implications for future prospects in the shelf break and slope areas
The petroleum system within Jurassic-Cretaceous strata of the Abenaki/Sable Subbasins and the LaHave Platform within the Scotian Basin, Eastern Canada includes: (a) active and mature kerogen Types I, II, II-III, and III source rocks within Bajocian to Tertiary age sediments. Oil-prone source rocks were encountered mainly in the Mic Mac, Verrill Canyon, Missisauga, Logan Canyon, and Banquereau formations especially in the outer shelf/slope regions; (b) numerous clastic reservoirs within the Mic Mac, Missisauga, and Logan Canyon formations; some of which are filled with, light oil, condensate, and gas; and (c) various clastic seal rocks within the shelf and slope region.
Variable paleoheat flow regimes are present within the Scotian Basin especially in the shelf, shelf break and slope diapiric provinces. Aromatic biomarkers and pyrolyzate distributions indicated that the various light oil and condensates can be subdivided into three families. The variation of organic facies, maturation, timing of oil and gas expulsion, and reservoir/seal facies indicate additional significant prospects for crude oil and gas within the outer shelf and slope area and gas/condensate in the shelf areas.
AAPG Search and Discovery Article #90914©2000 AAPG Annual Convention, New Orleans, Louisiana