stratigraphy and oil shale potential - Geology Ontario

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resource extraction and therefore is not included in this
estimate.
As there are two organic rich zones in the Marcellus,
separate resource estimates are made for each zone as follows.
These values are then combined for the Land Accessible
Formation Estimate. Drill core M-8 did not intersect an upper
organic zone, although the gamma ray peak locations on the
geophysical logs suggest it is present. Its absence, in M-8,
is probably a result of core recovery problems, more than an
absence of the upper organic bed, thus it has been included in
this calculation. As both the upper and lower organic rich
beds were intersected by several drillholes, values for
organic rich bed thickness and yield were averaged from data
in Tables 5 and 6.
av. density av. thickness Yield
(m.) (1/t)
Upper Organic 2.37 0.68 61.7
Lower Organic 2.39 0.45 24.3
(Individual values for each hole are shown in Table 5 and 6).
The calculations for a reserve value for each organic bed
were calculated using the following equation:
Surface area (m2) x zone thickness (m) x rock density x
yield (I/tonne)/1000 = Reserve in cubic metres of oil
(equivalent kerogen)