Abstract

With major oil and gas discoveries diminishing in number, industry is turning its attention to redevelop fields with poor reservoirs like silts which have otherwise been accorded lower priority earlier. It has always been a challenge to identify the locales with better reservoir facies development in un-drilled areas of a field and most often many development wells either go dry or turn out to be poor producers, significantly increasing the cost of production from a given field. "Kalol Field in Cambay Basin is a several decades old discovery with a significant number of development wells. However the oil recovery remained hardly around 25% (approx.). Most often, the contributing factor for this low recovery factor is poor reservoir facies (tight silts) within the major producing sequences like Kalol IX and Kalol X. Identifying areas of better reservoir facies remained a challenging task before the geo-scientists.