Innovative Surface Geochemical Exploration For Conventional and Unconventional Hydrocarbon Reservoirs
David Seneshen, Jim Viellenave, and John Fontana
Vista GeoScience, LLC, Golden Colorado
Organic and inorganic surface geochemical methods are integrated to explore for hydrocarbon reservoirs. Where possible, these geochemical data are combined with geological and geophysical data to further reduce risk in hydrocarbon exploration. The organic variables are a direct indicator of hydrocarbon presence and type, and inorganic variables such as calcium, magnesium, strontium, barium, lithium, lead, zinc and chloride can be indicative of fluid leakage from underlying hydrothermal dolomite. Organic (C1-C12 hydrocarbons) and inorganic (major/trace elements and anions) data from the following surface geochemical case studies over conventional and unconventional oil & gas reservoirs will be presented to demonstrate the value of these innovative methods to hydrocarbon exploration for oil and gas in hydrothermal dolomite reservoirs (New York, Ohio, Nevada and Utah), condensate in conventional sandstone reservoirs (Mackenzie Delta – Canada), condensate in tight gas sandstone reservoirs (Wyoming), dry gas in fractured limestone/shale reservoirs (New York), and dry gas in coal bed reservoirs (Wyoming).
AAPG Search and Discover Article #90065©2007 AAPG Southwest Section Meeting, Wichita Falls, Texas