Petrophysical Inversion of Well-Log and VSP Data Using a Dual-Porosity Model

P- 195 PETROPHYSICAL INVERSION OF WELL-LOG AND VSP DATA USING A DUAL-POROSITY MODEL Introduction Yan Jun 1� 2 Enru Liu 1 Xiang-Yang Li 1 and Roger Scrutton 2 1 British Geological Survey Murchison House West Mains Road Edinburgh EH9 3LA UK 2 Department of Geology and Geophysics University of Edinburgh UK To link seismic velocity with reservoir parameters the time-average equation of Wyllie et al. (1956) is widely used. The time-average equation assumes that the travel time of seismic wave is linearly dependent on pore uid solid frame and their relative amount. Wyllie's equation is based on two phase media