موقعك الحالي:صفحة رئيسية>المنتجات
Multifocusing Seismic Processing to Improve Poor Response Areas below Basalt Layers, Canadon Asfalto Basin, Argentina. ... There are 4 key steps in seismic processing that need special attention ...
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2019-3-22 · processing have been tested to improve the quality of seismic sections in the basalt covered areas. These techniques include long offset seismic data acquisition (Ryu, 1997), low-frequency sources (Ziokowski et al., 2002) and prestack depth migration (Fruehn ., 2001). Improved results have been et al reported in the petroleum industry.
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2005-5-1 · 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
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(20m). 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
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2010-2-1 · The presence of highly heterogeneous basalt layers has a detrimental effect on seismic imaging of underlying structures. Due to the prevalence of basalt, the challenge of imaging below basalts impinges on a broad spectrum of geological problems, from hydrocarbon exploration to volcano seismology.
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2017-11-23 · 2D Long Offset Data Processing for Sub Basalt 3 Low frequency processing keeping maximum frequency at 30-40 Hz below basalt is taken up for deeper prospects. Dense velocity analyses with complete manual picking anchoring at every crucial velocity pick points up to 250m X 250m are carried out as said above.
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2021-5-18 · Seismic imaging of sub-basalt sedimentary layers is difficult due to high impedance of the basalt layer, the roughness of the top and bottom of the basalt layer and sometimes the heterogeneities within the basalt layer. In this thesis we identify specific problems within the modern imaging technology which limit sub-basalt imaging. The basic
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2017-11-23 · Keywords: Sub-basalt, Low-frequency, Wave field analysis, Wide angle seismic imaging Introduction Sub-basalt plays are receiving increasing interest in the exploration for oil and gas. Besides basalt acting as a direct seal for hydrocarbon accumulations, there are a variety of traps that can be hidden below a basalt layer. Seismic
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2001-12-1 · In the presence of thick, laterally extensive basalt layers, seismic reflection sections are typified by a high amplitude top basalt reflector and the absence of base-basalt and sub-basalt events. From our tests, varying layer thickness and source frequency, a synthetic 2-D fractal model, which produces seismic similar to real sub-basalt ...
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2005-12-21 · New seismic reflection data have been used to image intra- and sub-basalt features beneath the Faroe-Shetland basin in the North Atlantic, where flood basalts and their complex internal structure hinder successful seismic imaging. We demonstrate that acquisition and processing of low-frequency,
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2019-3-22 · The first layer is a thin layer of very dry weathered basalt, with an average value of ρ =8430 Ohm.m, and at a depth ranging from 1 to 7.5 m. The value of apparent resistivity in the second layer is about ρ>4000 Ohm.m and at depth ranging from 7.5 to 20 m, which might be comprised of fresh basalt. The third layer has an apparent
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2013-12-24 · The first layer is a thin layer of very dry weathered basalt, with an average value of ρ = 8430 Ohm.m, and at a depth ranging from 1 to 7.5 m. The value of apparent resistivity in the second layer is about ρ > 4000 Ohm.m and at depth ranging from 7.5 to 20 m, which might be com-prised of fresh basalt. The third layer has an apparent
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2021-8-2 · below a basalt layer. However, due to shape irregularities and het erogeneities with high velocity contrasts around and within the basalts, it can be challenging for seismic processing to image the base of the basaltic layer and details of what is below . [For example, s ee Fliedner and White (2001) ].
Read More2005-5-1 · 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
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2016-11-21 · 3 Seismic Data Processing ... However, the Arnott Basalt layer has only been modeled northwest of the Alpine Fault. Although there is no straightforward geological or tectonic explanation for this HVL overlying a LVL, a correlation and link to the regional fault structure or anisotropy cannot be excluded.
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Advanced processing of long-offset seismic data for sub-basalt imaging in the Faeroe-Shetland Basin
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2006-4-12 · Metadata. Seismic imaging of sub-basalt sedimentary layers is difficult due to high impedance of the basalt layer, the roughness of the top and bottom of the basalt layer and sometimes the heterogeneities within the basalt layer. In this thesis we identify specific problems within the modern imaging technology which limit sub-basalt imaging.
Read More2005-12-21 · New seismic reflection data have been used to image intra- and sub-basalt features beneath the Faroe-Shetland basin in the North Atlantic, where flood basalts and their complex internal structure hinder successful seismic imaging. We demonstrate that acquisition and processing of low-frequency,
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2019-5-20 · Integrated seismic and electromagnetic model building ... hanced seismic data acquisition and processing or from other geophysical survey techniques, such as potential field methods, ... mass density contrast for this anomalous basalt layer and the layers below are precisely known (e.g., Oldenburg, 1974).
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2004-9-1 · [1] A variety of seismic experiments indicate that seismic velocities in the uppermost oceanic crust (layer 2A) increase very rapidly with age, nearly doubling in 10 my or less, but only one measurement was made in situ, by an oblique seismic experiment in DSDP/ODP Hole 504B. A VSP acquired in 11 Ma crust at ODP Site 1243 yields a velocity of 4.21 ± 0.08 km s −1,
Read More2019-3-22 · The first layer is a thin layer of very dry weathered basalt, with an average value of ρ =8430 Ohm.m, and at a depth ranging from 1 to 7.5 m. The value of apparent resistivity in the second layer is about ρ>4000 Ohm.m and at depth ranging from 7.5 to 20 m, which might be comprised of fresh basalt. The third layer has an apparent
Read More2005-5-1 · 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
Read More2021-8-2 · below a basalt layer. However, due to shape irregularities and het erogeneities with high velocity contrasts around and within the basalts, it can be challenging for seismic processing to image the base of the basaltic layer and details of what is below . [For example, s ee Fliedner and White (2001) ].
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1998-6-22 · SEISMIC PROPERTIES OF FLOOD BASALTS FROM HOLE 917A DOWNHOLE DATA, ... tics of the flood basalt sequence by processing and inversion of sonic waveform data, and (2) conducting detailed log-core correlation, en- ... 0.6-m-thick sediment layer separates the Middle and Upper Series.
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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
Read More2005-12-21 · New seismic reflection data have been used to image intra- and sub-basalt features beneath the Faroe-Shetland basin in the North Atlantic, where flood basalts and their complex internal structure hinder successful seismic imaging. We demonstrate that acquisition and processing of low-frequency,
Read More2019-5-20 · Integrated seismic and electromagnetic model building ... hanced seismic data acquisition and processing or from other geophysical survey techniques, such as potential field methods, ... mass density contrast for this anomalous basalt layer and the layers below are precisely known (e.g., Oldenburg, 1974).
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2016-7-20 · guided the actual wide angle seismic data processing and achieved sub basalt seismic imaging. An Xueyong [9] and Zhao Jianzhang[10] put forward the suggestion of seismic acquisition survey parameters in view of the problems of the development of the surface layer and the superficial layer. She Deping [11] [12] using wave
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2018-9-25 · Fig. 5. 3D seismic image of a small shield volcano, covered by over 3000 m sediments (Santos Basin) Typical features of low viscosity basalt flows are pipe vesicles and vesicle cylinders. We believe that these surface features do not play a role after compaction and subsidence of several thousand meters (Fig. 5).
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2012-3-26 · Earthquake seismology is the best tool to study the interior of the earth. When an earthquake or explosion occurs, part of the energy released is as elastic waves that are transmitted through the earth. The waves are then detected and
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الصين -تشنغ تشو -المنطقة الوطنية للتنمية الصناعية للتكنولوجيا المتطورة، جادة العلوم رقم 169.
الاتصال: 0371-86549132.