Abstract

3D Pre-Stack Merging is a method of processing of multiple 3D projects acquired in different conditions (time of realization, geometry, grid orientation and other parameters) offering the same results as if in case of single, coherent set of data acquired and processed as one large project. 3D Seismic data from three (3) blocks viz. Block-1, Block-2 & Block-3 within Upper Assam Basin were taken up for merging in the pre-stack domain along with Pre-stack time migration processing. These blocks have both oil and gas prospects. Seismic data in these blocks were acquired over different vintages starting from 2002 to 2017 and processed & interpreted separately over a period of time.