Abstract

This case study deals with practical aspects of merging of seven seismic 3D Land surveys of Linchsouth Kadi area. These 3D surveys were acquired over a decade long time span by different field crews, with different acquisition parameters, objectives, instruments etc. As a result, this gave rise to variations in data quality, amplitude, time and phase shifts among the individually processed volumes leading to correlation difficulties. The reprocessing of the data was taken up to create a seamless mosaic of 3D seismic volume. The reprocessing comprised of seismic data pre-processing (including pre-stack data merge) followed by pre-stack time migration of seven seismic vintages. The final processing workflow adopted for this project was designed based on specific needs of the data and several tests carried out at each processing step.