Abstract

Active seismic imaging in complex and in-accessible areas is major challenge to E&P industry. In these scenarios, Passive Seismic Tomography (PST) can provide value addition as a complementary tool in order to improve the sub-surface understanding. PST can contribute immensely both in early as well as later stage of hydrocarbon exploration. This paper showcases a case study from Upper Assam basin for two areas, first which is entirely at early stage of exploration and second which includes both developed as well as less explored (thrust belt) parts. Both the study areas were having their own sets of challenges such as tough logistics, limited data availability, near surface & sub surface challenges. It has been discussed how PST results correlate with other geoscientific datasets and when integrated can provide better insight of subsurface.