47°W

47°W

47°30'W

47°30'W47

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47°N

46°3

0'N

46°3

0'N

ANNIEOPSQUOTCH 3DMULTI-CLIENT 3D SEISMIC SURVEY

0 5 10 15 202.5

Kilometers

N:\Public\GIS\Arc Map Documents\Canada\SpecSheetMaps\Annieopscquotch3D(Port).mxd October 04, 2016

Canada

St. Pierre & Miquelon

ACQUISITION PARAMETERS Acquisition Date: August 2001

Data Acquired By: WesternGeco Shooting Orientation: 3D shelf strike and dip

Airgun Source: 3874 cubic inches in each array Gun Depth: 6 meters

Shotpoint Interval: 25 meters, flip-flop Source Separation: 75 meters

Streamer Separation: 150 meters Group Interval: 25 meters

Recording Channels: 240 per streamer Streamer Depth: 8 meters

Streamer Length: 6,000 meters Record Length: 9.2 seconds

Sample Interval: 2 milliseconds Nominal Stacking Fold: 60

TIME PROCESSING Data processing performed by: WesternGeco, December 2010

Input field data Merge navigation with seismic trace headers Deterministic signature deconvolution to zero phase Resample from 2 ms to 4 ms Shot and CMP domain swell noise attenuation Denoise (if needed) Tau-P decon (as needed) Simultaneous 3D GSMP demultiple & DWD Tau-P mute for noise removal OPAL radon Two passes weighted least squares radon demultiple PRIMAL residual demultiple 3D RNA Anisotropic Kirchhoff pre stack time migration Deterministic waterbottom demultiple (DWD) Residual Dip Denoise SEG-Y output

Annieopsquotch 3D Pre-Stack Time Migration (PSTM)

Pre-Stack Depth Migration (PSDM)Multi-Client 3D Survey, 629 km²

DEPTH PROCESSING Data processing performed by: WesternGeco December 2010

3D RNA 250m X 250m Anisotropic Velocity Analysis Anisotropic Kirchhoff Pre-Stack Depth Migration Five Tomography Iterations Parabolic Radon Transform 3D RNA Post Migration Inverse Q Gun and Cable Correction 7m SEG-Y output

AVAILABLE DELIVERABLES

Vintage Processing Data Deliverables

Nav Merge / Field, plus navigation files and obs-logs Seg-P1 navigation Field support data Final pre-DMO gathers with de-multiple PSTM gathers Migration and stacking velocities

PSTM/PSDM Data Deliverables

Scaled final stack (Time), inverse Q Raw final Stack (Time and Depth) Angle Stacks (Time and Depth) PSTM Gathers with DWD Property fields (ascii and SEGY): epsilon, delta, azimuth, dip SCVA rms stacking velocities (ascii and SEGY) Final migration velocity field (Depth, SEGY)

4 October 2016

Annieopsquotch 3D Pre-Stack Time Migration (PSTM)

Pre-Stack Depth Migration (PSDM)Multi-Client 3D Survey