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Aquisition Parameters
Blind Bay Phase I
Contractor: Acadian - TZ
Template: 8 NE-SW Rx lines of 221 groups / NW-SE source lines
Source intervals: 1650ft @ 165ft (102/mi2)
Receiver intervals: 1485ft @ 165ft (114/mi2)
Maximum offset: 9000m
Natural Bin size: 82½x82½ft
Nominal fold: 50
Source Type : Dynamite 5.5lbs @ 40ft / Air gun
Record length: 10 sec @ 2ms
Acquisition Period: 1997 - 1998
Blind Bay Phase II
Contractor: Geco-Prakla - TZ
Template: 8 NE-SW Rx lines of 221 groups / NW-SE source lines
Source intervals: 1650ft @ 165ft (102/mi2)
Receiver intervals: 1520ft @ 165ft (111/mi2)
Maximum offset: 35,640ft
Natural Bin size: 82½x82½ft
Nominal fold: 50
Source Type : Air gun ~50 bar-m
Record length: 10 sec @ 2ms
Acquisition Period: 1998
Blind Bay Phase III (South Pass 60)
Contractor: Western Geophysical - OBC
Template: 2 NE-SW Rx lines of 480 groups / NW-SE source lines
Source intervals: 600m @ 50m
Receiver intervals: 600m @ 50m
Maximum offset: 6000m
Natural Bin size: 25m x 25m
Nominal fold: 60
Source Type : Air gun ~100bar-m
Record length: 10 sec @ 2ms
Acquisition Period: 1997
Processing Parameters
Merge PoSTM / PrSTM (GeoSignal 2000)
Co-Sensor Sum
Resample to 4ms
Airgun delay correction
3D CMP binning (82.5x82.5ft)
Geometry QC
Trace Edit
Gain Correction
Velocity Analysis (1mi)
Tomography Statics
Datum Correction
Deconvolution (trace/spiking
)
Amplitude match to Blind Bay
Despike
Velocity Analysis (1mi)
Preliminary Stack
Seven iterative passes Residual Statics (surface consistent); Stack, Velocity Analysis (1mi)
3D DMO Velocity Analysis (½mi)
3D NMO
Filter (4/6-60/70Hz)
Mute
PreStack scaling
Flex Binning (50% bin expansion)
CDP consistent Residual Statics
3D DMO (archive)*
Stack (archive)
3D Migration (archive)
Noise Rejection - Tau-P (archive)
*Also created a Common Offset PrSTM volume using 15 individually migrated offset planes
Products
A. PoSTM w/ Noise Rejection
B. PrSTM raw
C. PrSTM w/ Noise Rejection
D. PrSTM gathers w/o NMO
E. Velocities
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