PHASE AR1
MULTI-CLIENT 2D SURVEY, 6,035 km
ACQUISITION PARAMETERS
Acquisition Date:
Data Acquired By:
Shooting Orientation:
Recording Instrument:
Streamer Type:
Streamer Positioning:
Airgun Source:
Gun Depth:
Shotpoint Interval:
Group Interval:
Recording Channels:
Streamer Depth:
Streamer Length:
Record Length:
Sample Interval:
Nominal Fold:
February 1989
Digicon Geophysical Inc.
North_East_Southwest
DSS-240
Digital Streamer
ARGO (Primary)
9000 cubic inches / 6000 cubic inches
7.5 meters / 7 meters
50 meters / 25 meters
25 meters / 25 meters
240 / 240
10 meters / 10 meters
6000 meters / 6000 meters
15 seconds / 8 seconds
4 milliseconds / 2 milliseconds
60 / 120
PROCESSING SEQUENCE
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Data processing performed by: Digital Exploration, LTD.
Processing completed 1989
Resample from 2ms to 4ms - 8s record length
Spherical divergence correction
NMO – F-K filter +/-5ms per trace - inverse NMO
Deconvolution - single design gate, 204ms operator, 4ms gap
Velocity analysis every 1km
NMO, mute, and CDP stack
Deconvolution - single design gate, 204ms operator, 16ms gap
Finite difference migration
Time and space variant filter
AVAILABLE DELIVERABLES
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Raw field data/shot ordered (SEGY)
Raw stack
Raw migration
Stacking velocity (ASCII)
Post stack navigation - UKOOA
AGC stack, AGC migration, RAP stack, RAP migration films: full and half scale
AGC migration films: quarter scale
Gravity and magnetic data
Workstation-ready tapes available in SMT, Landmark, and Geoquest
May 24, 2010
6°E
9°E
12°E
Nigeria
3°N
3°N
Cameroon
GNQ
0°
0°
STP
3°S
3°S
Gabon
COG
6°S
6°S
Congo, DRC
AR1
MULTI-CLIENT 2D SEISMIC SURVEY
0
25
50
100
150
Angola
200
Kilometers
\Africa+Europe+ME\SpecSheetMaps\AR1.mxd
6°E
June 03, 2010
9°E
12°E