Petrophysical Relationship to Predict Synthetic Porosity Log
Guntoro, Thariq; Putri, Intan A.
In seismic analysis, P-wave is an important attribute to identified the reservoir. It is sensitive with the presence of hydrocarbon either gas or oil. By Petrophysical relationship, the synthetic log can be estimated. Faust's equation used to obtain P-wave velocity based on resistivity value. Gardner's equation used to derived P-wave become density. Because of the porosity of a reservoir could be obtained based on resistivity and density, the log transform method could be used to estimate the porosity log. In this research, log transformation method used so that the synthetic log porosity in reservoir characterization with a depth of 5500 ft could be estimated. When the P-wave velocity log estimated by Faust's equation, a better result obtained in a depth of 4300-5479 ft compared with the measured P-wave velocity. A good results was also demonstrated by the conversion of P-wave velocity to density at a depth of 4216 - 5475 ft. The conclusion is porosity log transform might be valid at a depth of 4300-5400 ft.
AAPG Search and Discovery Article #90163©2013AAPG 2013 Annual Convention and Exhibition, Pittsburgh, Pennsylvania, May 19-22, 2013