Integrated Time-Lapse Rock Physics Measurements – the Key to Understanding Reservoir Elastic Moduli Changes with Hydrocarbon Production

A-2 INTEGRATED TIME-LAPSE ROCK PHYSICS MEASUREMENTS – THE KEY TO UNDERSTANDING RESERVOIR ELASTIC MODULI CHANGES WITH HYDROCARBON PRODUCTION RAFAEL B. GUERRA JOERG H. MEYER ALAN M. SIBBIT and ROBERT M. VAN DELDEN 1 Schlumberger 1325 S. Dairy Ashford Suite 300 Houston TX 77077 USA ABSTRACT Time-lapse logging has been routinely used in the oil industry for many years to monitor saturation changes and fluid contact movement in producing wells. Production logs are also applied in a time-lapse manner to determine fluid saturations and flow rates of producing intervals. While such logs give an accurate measure of fluid movement at discrete