TGS Imaging Technology update SEG 2016

Technology Update

Oct 2016

©2015 TGS-NOPEC Geophysical Company ASA. All rights reserved. ©2015 TGS-NOPEC Geophysical Company ASA. All rights reserved.

Imaging Service – Global Reach with Strong R&D

Proprietary ProcessingMulti-Client Processing Multi-Client & Proprietary Processing

Onshore and unconventional plays

Gulf of MexicoDeepwater and Shelf

plays

Brazil salt plays

West Africa Deepwater and subsalt plays

West Australasia Deepwater plays

North Sea legacy production and new plays

Greenland Arctic plays

Colombia (Pacific & Caribbean)

Calgary

HoustonBedford, UK


TGS Super Computer Center

Hardware • Over ten thousand GPUs • Over ten thousand CPUs • Huge and fast online storage • • Over 30 Peta Flops compute power

Center and Data Safety • Inline UPS protection for all production systems • On-site back-up generators for power outages• Climate controlled computer and tape storage rooms• Fire detection and suppression systems• Routine backups for disaster recovery

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TGS Imaging – Services Offered

Multi- Client & Proprietary Marine or Land, 2D or 3D Narrow azimuth, wide azimuth, multi-azimuth 3D Ocean bottom cables or ocean bottom nodes 4D Processing From field data to final migration and inversion


Latest Technology Broadband Processing with 3D deghost Latest denoise and demultiple techniques (3D SRME, SWME, IME) Multi-Dimensional data regularization (3D, 4D, 5D) AVO compliant time & depth pre-stack imaging capabilities Complete toolkit for anisotropic imaging (VTI, TTI, Orthorhombic) Imaged Guided and high resolution tomography Kirchhoff, WEM, Beam, RTM migrations – suited for VTI, TTI, Orthorhombic Least Squares RTM, FWI, COR Gathers for subsalt tomography Illumination Studies


3D De-ghost Broadband Processing

GoM: 3D de-ghost enhances bandwidth and resolution

without

with


High Resolution TomographyVelocity model building capability High Resolution – Image-Guided TOMO More accurate and robust offset-dependent picking Structure conformance

Angola: 3D PSDM Image and Velocity Update


Orthorhombic PSDM

GoM: Declaration 3D uses orthorhombicmodel building and large-offset dual WAZ

to enhances image of Norphlet Play

before

after

Common Offset RTM (COR)

Improved images below salt!Common Offset RTM Gathers (COR)TGS’ Common Offset RTM (COR) gathers are a reliable and efficient technologytargeting velocity model building in the hard-to-illuminate subsalt region. In COR,offset limited shot gathers are migrated separately and then collected together toform offset gathers. COR gathers provide a superior perspective on subsalt regions.Combining COR with an existing tomographic inversion engine and allowing updatesto extend into the salt can deliver significantly better subsalt velocity models andimages.

Before COR Velocity Update

After COR Velocity Update


Full Waveform Inversion

North Sea: 3D FWI image below fault shadow

before

after


Least Square RTM

GoM: LSRTM improves subsalt image

Regular RTM

LSRTM

Thank you

©2015 TGS-NOPEC Geophysical Company ASA. All rights reserved.

Thank you

©2015 TGS-NOPEC Geophysical Company ASA. All rights reserved.

713-860-2100

Data & Analytics

TGS Imaging Technology update SEG 2016