Abstract

SN388 Telemetry System has an inherent limitation that with a single PAM Module only 1200 channel Data can be acquired at 2 ms Sample Interval. During the Field Season 2006-07, GP-12 of GS - Chennai was assigned the task of acquiring 1296 channels using SN388. To implement this, the SN388 System was to be put into Multi-Module Operation cascading two PAMs. The OEM recommended procedure for implementing this involved procurement of Accessory kit from OEM, M/s. Sercel, France, involving an expenditure of Rs. 6.8 Lakhs. Geophysical Services, Baroda had already acquired this Accessory kit. An intensive study of the Hardware of the Accessory kit established that the necessary Interface can be indigenously implemented. Accordingly, the necessary drawings were generated and the Hardware implemented using In-House resources. The Module was successfully put into operation in GP-12 for cascading two PAM Modules and Seismic Data was acquired deploying 1296 active channels. This resulted in starting the operations in time and also in a cost saving of nearly Rs. 6.8 Lakhs as ONGC Chennai had almost finalized procurement of Accessory kit from OEM for this Multi-Module Operation