Exploration & Production: Oil and Gas Review

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New Albany Shale Gas Project – A Joint Industry Project Sponsored by the RPSEA
distribution and intensity. At this stage, we will identify those attributes
Figure 1: Hydrogen Index Map for New Albany Shale in the Illinois Basin
with first-order control over gas production as a tool for identification
of high-potential areas of the basin. Dr Steve Laubach and Dr Julia Gale
of BEG are the principal investigators for the geological studies.
Geochemical Analysis
Hydrocarbon gases contained in the New Albany shale consist of
thermogenic gas evolved from thermally matured organic material
and biogenic methane resulting from bacterial digestion of carbon
compounds. While the evolution of thermogenic methane normally
ceases upon uplift of the formation, bacterial activities continue for
as long as the environment remains amenable to bacterial growth.
To arrive at a reliable resource estimate and to identify favourable
regions within the basin, a comprehensive geochemical investigation
will be performed. Key activities under this task include field data
acquisition, including sampling of gas and co-produced water, and
laboratory tests including gas chromatography and mass
spectroscopy for measurement of total organic content. In addition,
the microbial population of the New Albany shale will be determined
Source: Higley et al., USGS Open-File Report 03-07: The New Albany Shale Petroleum System, Illinois Basin.
from water samples. Planned data analysis also includes microbial
analysis consisting of 4’,6-diamidino-2-phenylindole (DAPI)-stained content in the shales. Dr Anna Martini from Amherst College, Dr
cell counts from individual wells, molecular fingerprinting based on Steven Petsch from the University of Massachusetts and Dr Jennifer
total DNA for community structure and total RNA to identify active McIntosh from the University of Arizona are engaged in geochemical
community members. Attempts will be made to isolate and culture studies of the New Albany shale.
novel methanogens to determine rates of methane production. Also,
microbial community structure in the New Albany shale will be Formation Evaluation
compared with that of the Antrim shale to assess whether any Identification of producing zones in New Albany shale wells and
observed differences influence production rates and total gas determination of reservoir properties from well logs is a non-trivial
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