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The AAPG/Datapages Combined Publications Database
Houston Geological Society Bulletin
Abstract
Abstract: Causes of Very Low Resistivity in Some High-productivity
Pleistocene Sandstones
By
Despite extremely low resistivity, several Pleistocene
reservoirs in Offshore Louisiana have produced water-free
at high rates. Production data indicate good ultimate recovery.
Intensive evaluation with logs, scanning electron
microscope, thin sections, sieve analysis and pressure buildup analysis indicate three different causes of the low
resistivity. Surprisingly, shale or clay content and distribution
alone do not always explain the low resistivity. A synergetic
evaluation program of geology, petrophysics, reservoir
engineering and log analysis is required to properly understand
and predict performance of these gas and oil reservoirs.
This presentation is adapted from the paper
"Surprising Productivity From Low-Resistivity Sands", for
the SPWLA Eighteenth Annual Logging Symposium and
authored by E. A. Vajnar, C. M. Kidwell and R. A. Haley. End_of_Record - Last_Page 2---------------