See energy defined. Blanchard 3DMULTI-CLIENT ONSHORE SEISMIC GRADY AND MC CLAIN COUNTIES, OKLAHOMA

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*Pricing available upon request

Surface Area 433 mi2

Receiver Interval 220 ft

Source Interval 220 ft diagonal

Receiver Line Spacing 880 ft

Source Line Spacing 1,100 ft

Rx Line Orientation E-W

Bin Size 110 x 110 ft

Source Type Vibroseis with dynamite infill

Template 32 lines live x 130 stations

Nominal Fold 208

Maximum Offset 19,913 ft

Record Length 5 seconds

Sample Rate 2 ms

Blanchard 3DTGS-NOPEC has used its best efforts to produce this map free of errors, utilization of same shall be at the sole

risk of the user. TGS-NOPEC assumes no liability or responsibility for reliance placed thereon.

ACQUISITION PARAMETERS*

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Blanchard 3D

Pre-Processing � Geometry QC � Trace edit � Noise attenuation in shot domain � Surface consistent amplitude compensation � Refraction statics � Spherical divergence correction � Noise attenuation in CDP domain � Velocity analysis � Surface consistent decon

� Residual de-noise (if required) � Second pass of surface consistent amplitude compensation

(if required) � Reflection statics � Velocity analysis � Second pass of residual statics (if needed) � Second pass velocity analysis (if needed) � Output pre-processed data with refraction and reflection

statics stored at trace headers

Time Imaging � Pre-stack time migration velocity analysis (2 passes) � Output migration velocities � Kirchhoff pre-stack curved ray migration � Output raw migrated gathers without NMO � Continuous high-resolution velocity and ETA analysis

and application � Output high resolution velocity field � Radon multiple attenuation

� Residual de-noise (if required) � Output processed migrated gathers with NMO � Mute and stack � Output raw migration stack � Filtering and scaling � Noise reduction and footprint removal � Output processed migration stack

Deliverables � Pre-processed data � Raw Time Migration Gathers with NMO removed � Processed Time Migration Gathers with NMO � Pre-Stack Raw Time Migration Stack

� Pre-Stack Processed Time Migration Stack � Migration Velocities � High Resolution RMS Velocity Field

Depth Imaging (Optional) � Build initial vertical velocity model by calibrating PSTM

velocities with checkshots � Remove long wavelength statics from data and move data to

acquisition datum � Kirchhoff depth migration � Estimate anisotropic parameters (delta and epsilon) � Three iterations of PSDM and tomography � Final iteration of PSDM and tomography (if required) � Final VTI Kirchhoff PSDM

� Output depth gathers with NMO � Residual moveout � Output depth gathers with NMO � Stack � Output raw migration stack � Noise removal (f-k power or fxy decon) � Amplitude balance and TVF � Footprint removal � Output processed migration stack

Deliverables � Depth Raw Migration Gathers with NMO � Depth Processed Migration Gathers with NMO � Pre-Stack Raw Depth Migration Stack

� Pre-Stack Processed Depth Migration Stack � Final Interval Velocity Model � Final Delta & Epsilon models

Optional Products � LAS well logs

PROCESSING PARAMETERS

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