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  • Event Calendar - NORSAR Seismic Modelling
    videos Services Model Building Illumination Studies SeisRoX Consultancy Support Documentation SeisRoX NORSAR 3D NORSAR 2D FAQ SeisRoX NORSAR 3D NORSAR 2D Technical Licensing FlexNet SafeNet Sentinel RMS Technical Information Academic Terms Contact Support Downloads SeisRoX Downloads Release Notes Installation Guide Previous Releases Downloads Documentation Installation Guide NORSAR 3D Downloads Release Notes Installation Guide Previous Releases Downloads Documentation NORSAR 2D Downloads Release Notes Installation Guide Previous Releases Downloads Documentation Viewer Downloads Installation Guide Licensing FlexNet SafeNet Sentinel RMS Training Events Course Descriptions NORSAR 2D Introduction NORSAR 3D Introduction NORSAR 3D Intermediate SeisRoX Introduction Private Courses Public Courses Training Schedule Event Calendar Research 3D Ray Tracing Seismic Tomography Seismic Imaging Seismic Inversion Rock Physics Software Development Projects Ray based PSDM 4D Seismic Modelling 4D Seismic Analysis Publications SeisRoX Index of Papers NORSAR 3D Index of Papers Case Stories Published by Clients Editorials Course Descriptions Private Courses Public Courses Training Schedule Event Calendar SEISMIC MODELLING Training Events Event Calendar Event Calendar 2015 NORSAR Innovation will be participating at these upcoming events Event Date Location Details SBGf 2015 August 3 6 Rio de Janeiro Brazil SBGf SEG 2015 October 18 23 New Orleans USA SEG Visit our booth and ask for a demo We

    Original URL path: http://www.norsar.no/seismod/Training/Event-Calendar/ (2016-02-03)
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  • Research - NORSAR Seismic Modelling
    Guide Previous Releases Downloads Documentation Installation Guide NORSAR 3D Downloads Release Notes Installation Guide Previous Releases Downloads Documentation NORSAR 2D Downloads Release Notes Installation Guide Previous Releases Downloads Documentation Viewer Downloads Installation Guide Licensing FlexNet SafeNet Sentinel RMS Training Events Course Descriptions NORSAR 2D Introduction NORSAR 3D Introduction NORSAR 3D Intermediate SeisRoX Introduction Private Courses Public Courses Training Schedule Event Calendar Research 3D Ray Tracing Seismic Tomography Seismic Imaging Seismic Inversion Rock Physics Software Development Projects Ray based PSDM 4D Seismic Modelling 4D Seismic Analysis Publications SeisRoX Index of Papers NORSAR 3D Index of Papers Case Stories Published by Clients Editorials 3D Ray Tracing Seismic Tomography Seismic Imaging Seismic Inversion Rock Physics Software Development Projects Publications SEISMIC MODELLING Research Research The use of seismic modelling in the petroleum industry is increasing and NORSAR has made a strategic decision to focus on those applications for which we have noted a strong interest among current and potential users NORSAR develops applications partly as software packages NORSAR 2D 3D SeisRoX and partly as services To maintain the position in the technology forefront within our field considerable resources are devoted to research activities Due to our well established product strategy the results of the

    Original URL path: http://www.norsar.no/seismod/research/ (2016-02-03)
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  • 3D Ray Tracing - NORSAR Seismic Modelling
    Guide Licensing FlexNet SafeNet Sentinel RMS Training Events Course Descriptions NORSAR 2D Introduction NORSAR 3D Introduction NORSAR 3D Intermediate SeisRoX Introduction Private Courses Public Courses Training Schedule Event Calendar Research 3D Ray Tracing Seismic Tomography Seismic Imaging Seismic Inversion Rock Physics Software Development Projects Ray based PSDM 4D Seismic Modelling 4D Seismic Analysis Publications SeisRoX Index of Papers NORSAR 3D Index of Papers Case Stories Published by Clients Editorials 3D Ray Tracing Seismic Tomography Seismic Imaging Seismic Inversion Rock Physics Software Development Projects Publications SEISMIC MODELLING Research 3D Ray Tracing 3D Ray Tracing 3D ray tracing has been the main method for simulating seismic wave propagation in NORSAR geophysical tools since the early eighties It started out as a single ray shooting approach but has evolved into a very advanced and efficient state of the art wavefront tracer WF3D that constitutes the basic engine in a number of tools used at various stages of the exploration and production process like simulating large realistic 3D surveys for generating synthetic data or illumination maps both for primary and converted waves survey planning of 3D marine land VSP and OBS geometries seismic velocity estimation tomography Green s functions for seismic imaging and Kirchhoff

    Original URL path: http://www.norsar.no/seismod/research/3D-Ray-Tracing/ (2016-02-03)
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  • Seismic Tomography - NORSAR Seismic Modelling
    SeisRoX Introduction Private Courses Public Courses Training Schedule Event Calendar Research 3D Ray Tracing Seismic Tomography Seismic Imaging Seismic Inversion Rock Physics Software Development Projects Ray based PSDM 4D Seismic Modelling 4D Seismic Analysis Publications SeisRoX Index of Papers NORSAR 3D Index of Papers Case Stories Published by Clients Editorials 3D Ray Tracing Seismic Tomography Seismic Imaging Seismic Inversion Rock Physics Software Development Projects Publications SEISMIC MODELLING Research Seismic Tomography Seismic Tomography An important application of 3D ray modelling is in sensitivity analyses i e to calculate how sensitive a certain result e g traveltime is to the variation of a given model parameter e g velocity A good example is seismic reflection tomography used to estimates parameters of the velocity model based on observations of reflected events in prestack seismic data The misfit function also called objective function or cost function for reflection tomography was originally formulated in the time domain of the seismic data but for quite a few years now it has been popular to use a misfit function in the depth domain In the latter type of approaches it is essential to calculate perturbations in reflection depths resulting when selected model parameters are perturbed NORSAR have developed a special application of the wavefront construction WFC in order to perform ray perturbation calculations efficiently A small example is illustrated in the figure The figure shows a vertical cross section with a superimposed coarse grid blue of P wave velocity values velocities are given in each grid node A selected grid node is indicated within the red rectangle For a given depth migrated shot gather horizons have been identified Based on WFC results two way rays were reconstructed and ray perturbation calculations were performed with respect to the selected grid node The velocity function was evaluated by linear

    Original URL path: http://www.norsar.no/seismod/research/Seismic-Tomography/ (2016-02-03)
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  • Seismic Imaging - NORSAR Seismic Modelling
    reasonably applied Consequently the industry has always tried to develop methods to first reduce the amount of data in a summation approach leading hopefully also to better signal to noise ratio then perform an imaging of the reduced data But the reduction process summation was based on rather simple models of the subsurface which implied post corrections to hopefully compensate for such approximations Nowadays it is well accepted that the only proper way to treat the data is an iterative model based processing where the imaging process itself focus all available information down to a depth model Such imaging is called Prestack Depth Migration PSDM and is the ultimate stage of the seismic processing But the challenge is still huge despite incredible developments in computer technology The actual PSDM codes are designed for the oil industry and lack flexibility with respect to acquisition geometry interactivity etc The competency of NORSAR in ray tracing approaches known to be flexible in use and efficient has already led to commercial software which can be used for PSDM applications But we believe at NORSAR that it is also possible to develop new PSDM tools for other types of applications especially in a target oriented ray based mode to give more flexible imaging solutions including interactive analysis tools NORSAR was granted in 2007 a new research project funded by the Research Council of Norway and dedicated to seismic imaging PSDM Though PSDM imaging has been studied at NORSAR for many years yielding indeed new modeling approaches such as the SimPLI PSDM simulator patented method used in the new SeisRoX software it is the first time that a project is entirely dedicated to this activity This gives us the opportunity to demonstrate through prototypes our ideas within PSDM technology In a tight integration with our other

    Original URL path: http://www.norsar.no/seismod/research/Seismic-Imaging/ (2016-02-03)
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  • Seismic Inversion - NORSAR Seismic Modelling
    Previous Releases Downloads Documentation Installation Guide NORSAR 3D Downloads Release Notes Installation Guide Previous Releases Downloads Documentation NORSAR 2D Downloads Release Notes Installation Guide Previous Releases Downloads Documentation Viewer Downloads Installation Guide Licensing FlexNet SafeNet Sentinel RMS Training Events Course Descriptions NORSAR 2D Introduction NORSAR 3D Introduction NORSAR 3D Intermediate SeisRoX Introduction Private Courses Public Courses Training Schedule Event Calendar Research 3D Ray Tracing Seismic Tomography Seismic Imaging Seismic Inversion Rock Physics Software Development Projects Ray based PSDM 4D Seismic Modelling 4D Seismic Analysis Publications SeisRoX Index of Papers NORSAR 3D Index of Papers Case Stories Published by Clients Editorials 3D Ray Tracing Seismic Tomography Seismic Imaging Seismic Inversion Rock Physics Software Development Projects Publications SEISMIC MODELLING Research Seismic Inversion Seismic Inversion NORSAR s main objective in seismic modelling in the past has been to develop methods and tools for simulation of wave propagation and seismic respons in complex 3D geological structures Hence the classical application of NORSAR technology has been forward modelling such as simulation and planning of 3D seismic surveys synthetic data generation interpretation support hypothesis testing and feasibility studies To day s research within seismic modelling has moved further to model based imaging elastic inversion rock physics inversion and 4D inverse analysis Advanced and robust inversion techniques require correspondingly good forward techniques Our intention is to develop a complete integrated modelling based framework where the user can start either in the prestack migrated or model domain and go back and forth between the domains for a given local target volume of the subsurface in a consistent and efficient way Some key issues of the system will be including important physical wave propagation effects like anisotropy S waves multi component A priory geological and geophysical constraints improved imaging with true amplitude sharper images better lateral and vertical resolution

    Original URL path: http://www.norsar.no/seismod/research/Seismic-Inversion/ (2016-02-03)
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  • Rock Physics
    Contact Support Downloads SeisRoX Downloads Release Notes Installation Guide Previous Releases Downloads Documentation Installation Guide NORSAR 3D Downloads Release Notes Installation Guide Previous Releases Downloads Documentation NORSAR 2D Downloads Release Notes Installation Guide Previous Releases Downloads Documentation Viewer Downloads Installation Guide Licensing FlexNet SafeNet Sentinel RMS Training Events Course Descriptions NORSAR 2D Introduction NORSAR 3D Introduction NORSAR 3D Intermediate SeisRoX Introduction Private Courses Public Courses Training Schedule Event Calendar Research 3D Ray Tracing Seismic Tomography Seismic Imaging Seismic Inversion Rock Physics Software Development Projects Ray based PSDM 4D Seismic Modelling 4D Seismic Analysis Publications SeisRoX Index of Papers NORSAR 3D Index of Papers Case Stories Published by Clients Editorials 3D Ray Tracing Seismic Tomography Seismic Imaging Seismic Inversion Rock Physics Software Development Projects Publications SEISMIC MODELLING Research Rock Physics Rock Physics The term Rock physics contains the range of techniques that relate the geological properties e g porosity lithology saturation of a rock at certain physical conditions e g pressure temperature with the corresponding elastic and seismic properties e g elastic modulus velocity impedance The techniques can be used for rock physics modelling i e to predict the elastic seismic properties from the geology or for rock physics inversion i

    Original URL path: http://www.norsar.no/seismod/research/Rock-Physics/ (2016-02-03)
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  • Software Development - NORSAR Seismic Modelling
    Installation Guide Previous Releases Downloads Documentation Installation Guide NORSAR 3D Downloads Release Notes Installation Guide Previous Releases Downloads Documentation NORSAR 2D Downloads Release Notes Installation Guide Previous Releases Downloads Documentation Viewer Downloads Installation Guide Licensing FlexNet SafeNet Sentinel RMS Training Events Course Descriptions NORSAR 2D Introduction NORSAR 3D Introduction NORSAR 3D Intermediate SeisRoX Introduction Private Courses Public Courses Training Schedule Event Calendar Research 3D Ray Tracing Seismic Tomography Seismic Imaging Seismic Inversion Rock Physics Software Development Projects Ray based PSDM 4D Seismic Modelling 4D Seismic Analysis Publications SeisRoX Index of Papers NORSAR 3D Index of Papers Case Stories Published by Clients Editorials 3D Ray Tracing Seismic Tomography Seismic Imaging Seismic Inversion Rock Physics Software Development Projects Publications SEISMIC MODELLING Research Software Development Software Development NORSAR is at the forefront internationally regarding development of commercial software products services in the field of seismic oil and gas prospecting The commercial software products NORSAR 2D 3D VelRock and SeisRoX are developed and maintained by NORSAR s Seismic Modelling section and are used by the leading E P companies throughout the world NORSAR s software development strategy is to make state of the art technology from the petroleum technology research activities available through commercial software products Furthermore all research activities in the field of petroleum technology should strengthen or extend NORSAR s software product portfolio Our products are developed in interdisciplinary teams with deep insight in geophysics and computer science The software engineers work in a tight cooperation with research geophysics to realize the latest research into new prototypes The prototypes evolves into final products by testing and verification in real cases by our service department before released commercially by NORSAR Innovation AS This process ensures that the new technology is usable and proven in real life by experienced users before it is released

    Original URL path: http://www.norsar.no/seismod/research/Software-Development/ (2016-02-03)
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