Rock Physics Special Interest Group

We were unable to register you for this event as the event deadline has passed or the maximum number of seats available has been reached.

Rock Physics modeling of Unconsolidated Sands: Accounting for Non-Uniform Contacts and
Heterogeneous Stress Fields in the Effective Media Approximation with applications to
Hydrocarbon Exploration

We show that by treating the contact stiffness as a variable, one can extend the effective
medium approximation used to obtain elastic stiffness of a random pack of spherical grains.
More specifically, we suggest calibrating the effective media approximation based on
contact mechanics by incorporating non-uniform contact models.

The simple extension of the theory provides a better fit to many laboratory and field
experiments and can provide insight to the micromechanical bonds associated with
unconsolidated sediments.

This approach is motivated by repeated observations of shear-wave measurements in
unconsolidated sands where observed shear-wave velocities are lower than predicted
by the Hertz-Mindlin contact theory.

We present in detail the calibration process for well-log data from a North Sea well
penetrating a shallow gas discovery and a deepwater well in the Gulf of Mexico.
Finally, we demonstrate the benefit of using this model
for AVA analysis of shallow sand targets in exploration and reservoir studies

Sponsored by SIG: Rock Physics

Wednesday 17-Sep-08 5:30 PM to 6:30 PM CDT

Speaker: Ran Bachrach and Per Avseth

Details for "Rock Physics Special Interest Group"

Speaker Ran Bachrach and Per Avseth

Pricing

Event Contact

Event Coordinator