... much smaller than 2 for fractured reservoirs. Matrix porosity in Towle's models was equal to zero. Aguilera 3 (1976) introduced a dual porosity model capable of handling matrix and fracture porosity. That research considered 3 different values of Archie's2 porosity exponent: One for the matrix ( m b...

... and/or depth play a role in gas production from tight gas reservoirs. tight gas sand drillstem testing drilling permeability reservoir gas production accumulation basin hydraulic fracturing gas reservoir information shanley fracture aguilera canada byrne upstream oil & gas...

... exponent m vs. total porosity for both fractured reservoirs and reservoirs with non-connected vugs. The graph is useful but must be employed carefully as it can lead to significant errors for certain combinations of matrix and non-connected vug porosities (Aguilera and Aguilera 7 ). The main problem...

... water. All of these aquifers considered matrix porosity but ignored the presence of natural fractures. Aguilera, 5, developed equations to account for the presence of natural fractures in unsteady state edge aquifers. The equations were validated by successfully comparing results against those...

... resistivity (in some cases apparent resistivity, or resistivity as affected by a shale group, A sh ), as shown on Figures 1a, 1b, 1c, 1d, 1e and 1f. The Pickett plot has been extended throughout the years to include many situations of practical importance. For example, Aguilera 3,4 demonstrated...