Sedimentary geology and evolution of an outcropping mixing of thermogenic natural gases in northern Appalachian basin

Journal Article · Tue Jun 01 04:00:00 EDT 1993 · AAPG Bulletin (American Association of Petroleum Geologists); (United States)

OSTI ID:5863772

Jenden, P D; Kaplan, I R ^[1]; Drazan, D J ^[2]

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1. Global Geochemistry Corp., Canoga Park, CA (United States)
2. New York State Department of Environmental Conservation, Albany (United States)

Stable isotope studies were undertaken to investigate the origin of 20 oil-associated gases from western and central New York State in the northern Appalachian basin. Gas wetness (C[sub 2][minus]C[sub 5]/C[sub 1][minus]C[sub 5]), methane [delta][sup 13]C, and methane [delta]D values range from 0.8 to 26.9%, [minus]47.9 to [minus]30.7%, and [minus]305 to [minus]143%, respectively. Corresponding ethane and propane [delta][sup 13]C values range from [minus]40.9 to [minus]32.0% and [minus]34.9 to [minus]27.9% These data are interpreted to indicate a thermogenic origin with source rock maturities ranging from early mature (equivalent vitrinite reflectance, R[sub O], approximately 0.5%) to post-mature (equivalent R[sub O]>2.0%). Inferred gas maturities generally increase with increasing reservoir age: from Late to Middle Devonian to latest Silurian (Oriskany, Onondaga, Akron), Silurian (Lockport, Herkimer, Medina), to Ordovician (Queenston and Black River). 74 refs., 10 figs., 4 tabs.

• OSTI ID: 5863772
• Journal Information: AAPG Bulletin (American Association of Petroleum Geologists); (United States), Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (United States) Vol. 77:6; ISSN 0149-1423; ISSN AABUD2
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030200* -- Natural Gas-- Reserves
Geology
& Exploration
AGE ESTIMATION
ALKANES
APPALACHIAN BASIN
CHEMICAL ANALYSIS
DEVELOPED COUNTRIES
ENERGY SOURCES
ETHANE
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GEOLOGIC DEPOSITS
GEOLOGIC STRUCTURES
HYDROCARBONS
ISOTOPE DATING
MACERALS
METHANE
MINERAL RESOURCES
NATURAL GAS
NATURAL GAS DEPOSITS
NATURAL GAS FIELDS
NEW YORK
NORTH AMERICA
ORGANIC COMPOUNDS
PROPANE
RESOURCES
SEDIMENTARY BASINS
SOURCE ROCKS
USA
VITRINITE