Abstract

Western margin basal Dharvi Dungar (DD) fan play was identified as a new play in Kaameshwari West area of Barmer Basin (RJONHP-2017/1 block). The play comprises of a series of coalesced lacustrine turbidite fan bodies within the Lower Dharvi Dungar (Lower DD) formation. The drilled interval of Lower Dharvi Dungar reservoir in Durga-1 and DD-FB-2 wells was further divided into lower DD3 and upper DD1 packages. DD1 reservoir are thinly laminated sands deposited as fan over a large area, however, DD3 sands are thicker and mounded in nature. The direction of reservoir fairways (Figure 1) is from the western basin margin area travelling east wards and getting deposited in the hanging wall of the Kaameshwari field. These reservoir intervals proved to be Hydrocarbon bearing and establishes a working petroleum system in a new Lower DD play. Multiple seismic attribute studies along with seismic inversion and machine learning (ML) based lithology classification, indicate the extent of this play over a large area in western margin corridor of central Barmer basin.