Geophysics Immersion on Reservoir Model Workflow
Breton, Pascal, Roselyne Botton-Dumay, Thierry Modiano, Emmanuelle Brechet, Total, Pau, France
In the past few years many papers about reservoir
characterization have been proposed to promote the use of seismic
data as a
help for petrophysical and facies
reservoir modeling. Especially new generation of lithoseismic
attributes have highlighted their interest to introduce 3D heterogeneities
inside the reservoir model.
However this seismic
contribution aspect, regularly promoted,
should not hide that seismic integration must be considered at each steps of
the entire reservoir
modeling
workflow in order to ensure a complete coherency
between geophysics and geology. Moreover, to be more efficient,
seismic
integration
along the workflow must be done together with the geologist and inside the
reservoir model tool as a common data support. This complete immersion of the
geophysics inside the reservoir model world will ensure a faster optimization
of dynamic reservoir model.
This paper proposes to illustrate a new road map for reservoir
model construction, integrating a direct coupling of seismic
contribution
inside the reservoir
modeling
process.
Several multidisciplinary stops, considered as compulsory, are
indicated on this road map to emphasize key levels of integration: - to ensure
structural seismic
deliverable fitted to reservoir model needs, - to provide
fault characterization parameters of interest for dynamic comprehension, - to
stick the reservoir model gridding within geophysical
limits, to tightly couple high vertical well resolution and high lateral
seismic
resolution for better heterogeneity representation, - to provide a
reservoir model ready for simulation and still coherent with original
seismic
data, which will be able to take into account future 4D seismic information.
New tools,
combined with new methodological approaches, have been introduced in our
reservoir model workflow to secure these multidisciplinary integration steps.
Geophysics contribution is no longer considered as an upstream static input
data but has become an active partner of the reservoir modeling
process.