basalt layer seismic processing

  • Coal seismic surveying over near-surface basalts

    Conventional seismic acquisition and processing of a 2D seismic line provided poor results. However, up-going reflections from layers below the basalt are clearly evident in the VSP survey and pre-stack depth migration was able to improve the continuity of the reflectors beneath the basalt. At the second mine, the 360 m wide basalt is at a depth of 40m and has a thickness of about 40m. It is

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  • Experience with the issue of seismic surveying over basalts

    basalt layers is very complex and conventional reflection seismic surveying is less effective, producing sub-surface images of variable quality. Figure 1 and Figure 2 present two shot gathers and one 2D seismic stack section from Peabody’s North Goonyella Mine. The basalt is located at the right end of the section. The data clearly shows that the basalt-cover seriously affects the signal-to

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  • (PDF) Coal seismic surveying over near-surface basalts

    Seismic reflection sectionsThe data from this site were processed first using a conventional processing sequence, and Figure 14 shows a conventional poststack migrated seismic section for the part of line L-04 which crosses the basalt flow. Within the basalt flow, no reflections can be seen, but to either side strong reflections are present. To the north of the basalt, these can be correlated

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  • Seismic wave propagation through an extrusive basalt

    01/04/2016· Layers of basalt flows within sedimentary successions (e.g. in the Faeroe-Shetland Basin) cause complex scattering and attenuation of seismic waves during seismic exploration surveys. Extrusive basaltic sequences are highly heterogeneous and contain strong impedance contrasts between higher velocity crystalline flow cores (∼6 km s-1) and the lower velocity fragmented and weathered

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  • Multifocusing seismic processing to improve poor response

    Multifocusing seismic processing to improve poor response areas below basalt layers, Cañadon Asfalto Basin (Argentina) D. Curia (WIAR)**, P. Veeken (WINZ)*, J.

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  • (PDF) Advanced processing of long-offset seismic data for

    Advanced processing of long-offset seismic data for sub-basalt imaging in the Faeroe-Shetland Basin Hassan Masoomzadeh* and Penny J. Barton, University of Cambridge, Satish C. Singh, IPG Paris Summary the linear noise of ringing and multiplication, arrive tangentially at about the time of the reflection signal from A specialized strategy for long-offset data processing is the sub-basalt targets.

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  • Basalt Layer Seismic Processing ralcolor.de

    basalt layer seismic processing baby-spel. Determining the Basaltic Sequence Using Seismic Reflection,The first layer is a thin layer of very dry weathered basalt, with an average value of ρ = 8430 Ohmm, and at a depth ranging from 1 to 75 m The value of apparent resistivity in the second layer is about ρ >4000 Ohmm and at depth ranging from 75 to 20 m, which might be com-prised of (PDF

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  • Sub-basalt Imaging of Hydrocarbon-Bearing Mesozoic

    16/03/2018· Since basalt is highly heterogeneous, a significant amount of incident seismic energy is attenuated, converted and scattered while propagating through the basalt layer, hence the seismic image quality becomes very poor. Therefore, it is necessary to develop proper seismic data acquisition and processing techniques to deal with different type of waves generated at the basalt interface

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  • Sub-basalt imaging problems and the application of

    01/12/2001· In this situation, standard seismic processing is often unable to resolve the structure beneath such basalt layers. For this reason, alternative techniques are sought to improve imaging of sub-basalt strata and aid the delineation of the bottom basalt. Acquisition techniques, developed for this purpose, include two-ship shooting, which produces very long offset data Joppen and White, 1990

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  • basalt layer seismic processing club-fossa-mariana

    where as on thick basalt layers, Figure 5: Typical seismic processing flowchart (HarbourDom ) Figure 6: Seismic cross section with picked reflectors. Get More; Improved signal processing for sub-basalt imaging. The seismic response of a thin basalt layer individual basalt layers. As observed by Widess (1973), the expected near-offset

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  • Experience with the issue of seismic surveying over basalts

    basalt layers is very complex and conventional reflection seismic surveying is less effective, producing sub-surface images of variable quality. Figure 1 and Figure 2 present two shot gathers and one 2D seismic stack section from Peabody’s North Goonyella Mine. The basalt is located at the right end of the section. The data clearly shows that the basalt-cover seriously affects the signal-to

    Chat Online
  • Coal seismic surveying over near-surface basalts

    Conventional seismic acquisition and processing of a 2D seismic line provided poor results. However, up-going reflections from layers below the basalt are clearly evident in the VSP survey and pre-stack depth migration was able to improve the continuity of the reflectors beneath the basalt. At the second mine, the 360 m wide basalt is at a depth of 40m and has a thickness of about 40m. It is

    Chat Online
  • (PDF) Coal seismic surveying over near-surface basalts

    Seismic reflection sectionsThe data from this site were processed first using a conventional processing sequence, and Figure 14 shows a conventional poststack migrated seismic section for the part of line L-04 which crosses the basalt flow. Within the basalt flow, no reflections can be seen, but to either side strong reflections are present. To the north of the basalt, these can be correlated

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  • Advances in seismic imaging through basalts: a case

    New seismic reflection data have been used to image intra- and sub-basalt features beneath the Faroe–Shetland Basin in the North Atlantic, where the highly reflective top and base boundaries of flood basalts and their complex internal structure make successful seismic imaging difficult. This study demonstrates that appropriate acquisition and processing of marine seismic data from hydrophone

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  • Seismic wave propagation through an extrusive basalt

    Layers of basalt flows within sedimentary successions (e.g. in the Faeroe-Shetland Basin) cause complex scattering and attenuation of seismic waves during seismic exploration surveys. Extrusive basaltic sequences are highly heterogeneous and contain strong impedance contrasts between higher velocity crystalline flow cores (∼6 km s-1) and the lower velocity fragmented and weathered flow

    Chat Online
  • (PDF) Advanced processing of long-offset seismic data for

    Advanced processing of long-offset seismic data for sub-basalt imaging in the Faeroe-Shetland Basin Hassan Masoomzadeh* and Penny J. Barton, University of Cambridge, Satish C. Singh, IPG Paris Summary the linear noise of ringing and multiplication, arrive tangentially at about the time of the reflection signal from A specialized strategy for long-offset data processing is the sub-basalt targets.

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  • Sub-basalt imaging problems and the application of

    01/12/2001· In this situation, standard seismic processing is often unable to resolve the structure beneath such basalt layers. For this reason, alternative techniques are sought to improve imaging of sub-basalt strata and aid the delineation of the bottom basalt. Acquisition techniques, developed for this purpose, include two-ship shooting, which produces very long offset data Joppen and White, 1990

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  • Advanced processing of long-offset seismic data for sub

    Advanced processing of long-offset seismic data for sub-basalt imaging in the Faeroe-Shetland Basin Hassan Masoomzadeh* and Penny J. Barton, University of Cambridge, Satish C. Singh, IPG Paris

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  • Sub-basalt imaging in the Faroe-Shetland Basin using CSEM

    of the basalt layer as well as sub-basalt strata have been pub-lished. For instance Fruehn et al. (2001) and White et al. (2003) used long offset rst arrivals for travel-time tomogra- phy in order to determine the sub-basalt velocities. However, the resulting velocity models lack resolution, and there is re-maining ambiguity in the interpretation of the base basalt and the top basement

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  • GEO ExPro Geology-Driven Subsurface Imaging in the

    Welldefined interfingering of basalt flows and inter-lava sandstone are present in the Rosebank hydrocarbon discovery (Duncan et al., 2009) and new seismic data in the Erlend area reveals several similarities with the Rosebank type of play. Based on a combination of field and seismic examples from mid-Norway and the UK, including borehole data from the Rosebank field in the Faroe-Shetland

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