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Upper Jurassic and Lower Cretaceous facies relationships in a passive margin basin, western North Atlantic

Conference ·
OSTI ID:6131664

Correlation of facies from hydrocarbon-bearing continent and transitional marine sandstones to time-equivalent high-energy shelf-margin carbonates provide insight into hydrocarbon habitats of the Baltimore Canyon basin. These facies occur within a thick (>10,000 ft) prograded wedge of shelf sediments in this passive margin basin. Wells drilled to test structural closures in shallow-water (<600 ft) areas of Baltimore Canyon penetrate clastic facies which are time-equivalent to the downdip carbonate facies tested in deep-water wells. Numerous hydrocarbon shows, including a noncommercial gas and gas-condensate accumulation, occur with sandstone units that were deposited in prograding continental/fluvial and transitional marine environments located updip of the Oxfordian/Kimmeridgian carbonate shelf edge. The continental and transitional facies are overlain by a fine-grained deltaic complex which forms a regionally extensive top seal unit. The deltaic complex was deposited during aggradation of the Kimmeridgian through Berriasian shelf-margin carbonates penetrated by the deep-water wells.

OSTI ID:
6131664
Report Number(s):
CONF-880301-
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
&amp; Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
&amp; Exploration
04 OIL SHALES AND TAR SANDS
040201 -- Oil Shales &amp; Tar Sands-- Site Geology-- (-1989)
040300 -- Oil Shales &amp; Tar Sands-- Drilling
Fracturing &amp; Mining
ATLANTIC OCEAN
BALTIMORE CANYON
CARBON COMPOUNDS
CARBONATES
COMPARATIVE EVALUATIONS
CONDENSATES
CONTINENTAL MARGIN
CONTINENTAL SHELF
CRETACEOUS PERIOD
DRILLING
FLUIDS
GAS CONDENSATES
GEOLOGIC AGES
GEOLOGY
HYDROCARBONS
JURASSIC PERIOD
LIQUIDS
MARINE SURVEYS
MESOZOIC ERA
NATURAL GAS LIQUIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
RESERVOIR ROCK
ROCKS
SANDSTONES
SEAS
SEDIMENTARY ROCKS
STRATIGRAPHY
SURFACE WATERS
SURVEYS
WELL DRILLING