Executive Summary

摘要

Papers in this issue of SPE Res Eval & Eng focus on naturally-fractured reservoirs, chemical methods, CO_2 sequestration, cold heavy-oil production, gas-hydrate reservoirs, and various specific modeling situations. The following is a brief outline of the papers in this issue.rn"Modeling Wettability Alteration by Surfactants in Naturally Fractured Reservoirs" describes adaptation of a chemical flooding simulator to model improved-oil-recovery processes involving surfactants in fractured reservoirs. Multiple relative permeability and capillary pressure curves corresponding to different wetting states have been used to model wettability alteration.