Abstract

An innovative integrated approach, using high resolution image logs, litho-facies analysis, and macro-depositional components from conventional log/geological correlations is developed to delineate reservoir orientation and understand the fluid distributions within sandstone reservoirs of Daman Formations of B-12, C-26 and C-24 Fields of TapatiDaman Block of Western offshore Basin, India. The mega features of the depositional environment, transgressive, regressive cycles along with MRS are deduced with more sensitive Resistivity-Sonic Overlay while the stacked channel/bar nature of the deposits in prograding delta is brought out by high resolution image analysis along with conventional logs. Facies analysis carried out fairly corroborates with core and image observations. Extensive cross plotting of K, Th, U concentrations, NMR porosities geochemical log ternary plots, micro sedimentary features from image logs and core studies are amalgamated to characterize the sands which are manifested as high amplitude geo bodies from Seismic perspective, The wide spread sand units developed towards the bottom of regressive phase are having single fluid distribution system in B-12 and C-24 structures while upper sand units developed in transgressive phase are having hydrocarbon occurrences of stratigraphic nature.