ANNEXURE – (TO BE SUBMITTED WITH TECHNO COMMERCIAL BID COVER-I as Appendix 5) – CRITERIA FOR TECHNICAL EVALUATION Technical specification of 2D multi-channel seismic data acquisition and processing Parameter Specification Availability Energy source Tuned airgun array Minimum Source Volume 5000 cu. in. Source depth 5-10 m Minimum pressure 2000 psi Primary to Bubble Ratio 15:1 or better Frequency Band 5-100 Hz Peak to Peak amplitude 13 bar-m or better Streamer length 6000 m Near offset not exceeding 150 m Streamer depth 10-20 m Group interval 25 m Shot interval 50 m No. of channels 240 Record length 16 sec Sampling interval 2 ms Recording system Digital Cable type Digital Recording format SEG-D or SEG-Y Media (2 copies) Hard disks Polarity SEG standard Hydrophone sensitivity 6-30 v/b or better Feathering not exceed 10º Leakage < 500 ohm-m Technical specification of seismic refraction (OBS) data acquisition and processing Parameter Specification Availability OBS type Hydrophone + 3 component geophone Minimum Source volume 5000 cu. in. Sampling interval 2 ms Record length 50 sec Navigation and positioning INS Technical specification of gravity data acquisition and processing
ANNEXURE – (TO BE SUBMITTED WITH TECHNO COMMERCIAL BID – COVER-I as Appendix 5) CRITERIA FOR TECHNICAL EVALUATION Technical specification of 2D multi-channel seismic data acquisition and processing Parameter Specification Availability Energy source Tuned airgun array Minimum Source Volume 5000 cu. in. Source depth 5-10 m Minimum pressure 2000 psi Primary to Bubble Ratio 15:1 or better Frequency Band 5-100 Hz Peak to Peak amplitude 13 bar-m or better Streamer length 6000 m Near offset not exceeding 150 m Streamer depth 10-20 m Group interval 25 m Shot interval 50 m No. of channels 240 Record length 16 sec Sampling interval 2 ms Recording system Digital Cable type Digital Recording format SEG-D or SEG-Y Media (2 copies) Hard disks Polarity SEG standard Hydrophone sensitivity 6-30 v/b or better Feathering not exceed 10º Leakage < 500 ohm-m Technical specification of seismic refraction (OBS) data acquisition and processing Parameter Specification Availability OBS type Hydrophone + 3 component geophone Minimum Source volume 5000 cu. in. Sampling interval 2 ms Record length 50 sec Navigation and positioning INS Technical specification of gravity data acquisition and processing
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