Abstract

Over the years, ONGC has been carrying out Seismic surveys in towns and villages in different areas of Gujarat state and other areas in our country. From time to time, increasing populations and consequently expansion of the villages, towns, and presence of larger number of tube wells in comparison to the past has become a big task for the exploration & possesses a challenge to the organisation. In such conditions, to carry out seismic surveys in densely populated towns like Kadi,etc., requires meticulous & proper planning to recover such areas in order to get full image of the sub-surface.The value addition in the survey has been the innovative technique related to recovery programme undertaken by the crew to recover the foldage / offset losses due to skip of shots in the main towns like Kadi and in the areas with thick clusters of tube wells. The adopted recovery templates made it possible, with time / cost effective approach, to minimize the area characterized by low foldage / missing near offsets.