Depositional environment of Upper Permian Taragaisky Formation in south-western part of Vilyuisky Syneclise

The results of exploration and prospecting completed in recent decades within the south-western part of the Vilyuisky Syneclise have identified the need in more detailed lithofacies zoning of the Upper Permian Play. For these purposes, the authors carried out reconstruction of depositional settings for the Taragaisky Formation, the productivity of which is proved in the central part of the syneclise. Package of investigations carried out included the analysis of geoseismic data interpretation results, paleo-morphological imaging, integrated reinterpretation of well logging data, lithofacies identification using V.S. Muromtsev methodology, as well as analysis of other data obtained from wells. The environment of the Taragaisky Formation accumulation were reconstructed, which are mainly related to evolution of terrigenous fluvial rock association on lowland plain