Abstract

Assam Arakan basin is one of the major onland producing basins of India. Commercial hydrocarbons are known to occur in Tipam, Barail, Kopili and Sylhet formations. The occurrence of hydrocarbons in Girujan formation is known since long and some small to mid-size fields are producing gas majorly. Almost 80% of reserves proved in Assam basin are from Tipam and Barail formations only ~0.7 % reserves proved so far in Girujan. Huge exploration potential is still there in Girujan to prove substantial number of reserves & resources in Assam basin. The challenge is that Girujan is dominantly clay rich formation, reservoir sands are thin and discrete in nature. Hence identification of these stratigraphic controlled sand bodies in structurally complex and highly dipping supra thrust fold beds being impossible in conventional seismic interpretation workflows.