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VolTerra for Volumetrics and STOOIP within Petrel* high-resolution reservoir models
Overview:
Calculations of initial fluids in place (gas, oil and water) is a major priority
before estimating reserves. This plug-in calculates the volumes of fluids in place
using high-resolution Petrel geological models, porosity, capillary curves and thermodynamic
data.
Useful links:
Features:
This plug-in allows calculation of volumes of hydrocarbons (gas and oil) and water
in reservoir and surface conditions. The physic is fully respected. The method is
particularly well suited for carbonate reservoirs as it allows considering lateral
and vertical heterogeneities.
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The VolTerra™ plugin improves calculations of fluids (gas, oil and water)
calculating OIIP and GIIP in standard and reservoir conditions. It is the natural
end-point of any workflow devoted to the geological modeling of newly discovered
or mature reservoirs, but particularly suited to highly heterogeneous reservoirs
with transition zones.
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Transition zones may contain a sizable part of STOIIP & GIIP, specifically in
low permeable sandstone and carbonate reservoir.
A good estimate of fluids in place requires to consider transition zones around
Gas-Oil and Water-Oil contacts using capillary pressure curves.
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When transition zone are present, variation of saturations close to water-oil contacts
are observed.
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These saturations of each phase: oil, gas and water can also be compared to log
extracted values to cross check the geological modeling for newly discovered reservoirs
or to evaluate contact changes for mature reservoirs.
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