A Fractured/Matrix Model for Estimating Water Saturations in Reservoir Rocks

Abstract

Wr'lte Pub.l'lcations Manager SPE P 0 Box 833836, Richardson, TX 75083-3836. Telex, 730989 SPEDAL. where and by w om t e paper 1s pres en . , , · · _ ABSTRACTIn this paper we present a model for calculating water saturations in clean, fine-grained, fractured rocks.The model, called the fracture/matrix (F/M) model, is used to calculate a composite poro~ity exponent, m, which is then used in Arch1e's relationship to calculate water saturations.An application of the F/~ model.to wells located in S.E. New Mex1co wh1ch penetrate the Bone s·pring sands is presented.

Effective Approach for Fractured Carbonate Reservoir Petrophysical Logs Interpretation in an Iranian Offshore Oil Field

“…Numerous investigations on the methods of calculating the porosity exponent and water saturation in the fractured reservoirs indicate their importance in petrophysical evaluations of these kinds of reservoirs (R. Aguilera, 1974Aguilera, , 1998M. S. Aguilera and Aguilera, 2003;Xu et al, 1988;Serra, 1989). The Mishrif Reservoir Unit, which is the main producing reservoir in the area of our study, is affected by fracture systems.…”