1. ACQUISTION QC IS ESSENTIAL
NON-PERFECT CONTROL WILL RESULT IN
DEGRADED DATA
Example of bad geometry control; the streamer is not at constant
depth.
Better geometry control; direct and ghost close to constructive
interference.
SEABED, PRIMARY RESPONSE
SEABED, SURFACE GHOST
REFLECTOR, PRIMARY RESPONSE
REFLECTOR, GHOST RESPONSE
MULTIPLE, PRIMARY RESPONSE
MULTIPLE, SURFACE GHOST
STREAMER TOO DEEP:
SEPARATION OF DIRECT AND GHOST
CONSTRUCTIVE INTERFERENCE
MULTIPLE
REFLECTOR
NOISE
BURSTS
10 ms
10 ms

2. SPECIAL PROCESSING CAN LEAD TO
SUPERIOR RESULTS
THIS IS SEA STATE 4 DATA!
Stacked section of Multi-Channel Sparker data, processed in conventional
way.
Note this is recorded in adverse weather conditions, but with good acquisition geometry.
The advantage of a multi-channel system is obvious in stacked section, compared to single-channel.
Same section as above, processed with innovative routines.
Note the acquisition imperfections are mainly taken care of, the multiple is practically gone,
noise bursts are reduced and the overall section is interpretable well beyond the surface
multiple.
STREAMER TOO DEEP:
SEPARATION OF DIRECT AND GHOST
CONSTRUCTIVE INTERFERENCE
MULTIPLE
REFLECTOR
NOISE BURSTS
CH NO 14/24, OFFSET 40 m
CLAY
CHANNEL
SAND, FORESETS
MULTIPLE
10 ms
STREAMER TOO DEEP:
SEPARATION OF DIRECT AND GHOST
SEABED MULTIPLE
STREAMER TOO DEEP:
SEPARATION OF DIRECT AND GHOST
MULTIPLE OF FIRST
REFLECTOR
NOISE
BURSTS
10 ms

3. 30m