Interpretation of Three-Dimensional Seismic Data

Brown, Alistair R.

doi:10.1190/1.9781560802884

Cited by 308 publications

(228 citation statements)

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“…Zero-phase seismic data are the most widely used in seismic interpretation work because (1) time and amplitude are co-located, (2) symmetrical wavelet with the majority of the energy being concentrated in the central lobe, (3) the time of tracked horizons coincides with the travel time of the subsurface interface causing the reflection, and (4) the resolution is better than other wavelets of the same content in frequency (Brown, 2004;Brown, 2008). Zero-phase seismic data are characterized by symmetrical wavelet, maximum amplitude at the center of the wavelet and have better resolution than minimum phase (Figure 3.1).…”

Section: Three-dimensional Seismic Datamentioning

confidence: 99%

“…The seismic resolution is dependent on the wavelength (λ) which in turn is inversely proportional to the frequency (f) and the velocity of the wave. The minimum wavelength in order to distinguish two discernible features should be one fourth of the wavelength (Brown, 2004). Hence, low frequency data has lower vertical resolution than high frequency data of the same object while high frequency seismic can resolve smaller features The horizontal resolution refers to the minimum lateral proximity between two points that can still be recognized as individual points rather than one (Yilmaz and Doherty, 1987).…”

Section: Seismic Resolutionmentioning

confidence: 99%

“…Faults on the seismic sections can be recognized based on their discontinuous reflectors which indicate their location, and the dip separation can be estimated by correlation of similar reflectors across the faults (Brown, 2004). Vertically displaced discontinuous reflectors and reflection shadows along the fault zone were used to observe and pick faults.…”

Section: Fault Interpretationmentioning

confidence: 99%

“…RMS amplitude is calculated as the square root of the sum of the squared amplitudes divided by the number of samples (Brown, 2004).…”

Section: Seismic Attribute Analysismentioning

confidence: 99%

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Deep-seated faults and hydrocarbon leakage in the Snøhvit Gas Field, Hammerfest Basin, Southwestern Barents Sea

Mohammedyasin

Lippard

Omosanya

et al. 2016

Marine and Petroleum Geology

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High-quality 3D seismic data are used to analyze the history of fault growth and hydrocarbon leakage in the Snøhvit Field, southwestern Barents Sea. The aim of this work is to evaluate the role of tectonic fracturing as a mechanism driving fluid-flow in the study area. To achieve this aim, an integrated approach including seismic interpretation, multiple seismic attribute analysis, fault modeling and displacement analysis was used.The six major faults in the study area are dip-slip normal faults which are characterized by complex lateral and vertical segmentation. The three main episodes of fault reactivation interpreted were in late Jurassic (Kimmeridgian), early Cretaceous and Paleocene times. Fault reactivation in the study area is mainly through dip-linkage. Throw-distance plots of the representative faults also revealed along-strike linkage and multi-skewed C-type profiles. The throw profiles show that faults in the study area evolved through polycyclic activity involving both blind propagation, syn-sedimentary activity and that they have their maximum displacement at the reservoir zone. The expansion and growth indices provide evidence for coeval fault activity with sedimentation and interaction of the faults with a free surface during their evolution.

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Section: Three-dimensional Seismic Datamentioning

confidence: 99%

Section: Seismic Resolutionmentioning

confidence: 99%

Section: Fault Interpretationmentioning

confidence: 99%

“…RMS amplitude is calculated as the square root of the sum of the squared amplitudes divided by the number of samples (Brown, 2004).…”

Section: Seismic Attribute Analysismentioning

confidence: 99%

See 2 more Smart Citations

Deep-seated faults and hydrocarbon leakage in the Snøhvit Gas Field, Hammerfest Basin, Southwestern Barents Sea

Mohammedyasin

Lippard

Omosanya

et al. 2016

Marine and Petroleum Geology

View full text Add to dashboard Cite

show abstract

“…Therefore, the phase and polarity of the seismic was established using subsurface features that can generate high amplitude reflections (Brown 2011) such as igneous intrusions in contrast to the enveloping sediment. This relationship was observed in the well 1-CP-01-SP, where the transition from the sediments to a diabase sill with 110 m thick shows a decreasing of slowness (sonic log) and increasing of density log.…”

Section: Methodsmentioning

confidence: 99%

Analysis of the geometry of diabase sills of the Serra Geral magmatism, by 2D seismic interpretation, in Guareí region, São Paulo, Paraná basin, Brazil

Costa¹,

Santos²,

Bergamaschi³

et al. 2016

Braz. J. Geol.

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ABSTRACT:The Paraná Basin holds in its stratigraphic record a thick layer of volcanic rocks related to the opening of the Gondwana Supercontinent, which occurred during the Eocretaceous. Based on the interpretation of three two-dimensional (2D) seismic lines in the region of Guareí, East-Central São Paulo state, in the Southeast of Brazil, the subsurface geometries of these volcanic rocks were identified. Since the original seismic resolution quality was low, alternative techniques were utilized to improve the seismic imaging, such as isolating maximum and minimum amplitude values by manipulating the color scale, and using the root mean square (RMS) attribute and the Amplitude Volume technique (tecVA), which emphasize the seismic signature of igneous rocks in relation to sedimentary layers. The use of such techniques allowed the identification of different geometries of diabase sills and showed a relationship between these intrusive and organic matter maturation of the source rock. KEYWORDS:Geometry of sills; Serra Geral magmatism; Amplitude analysis. RESUMO: A Bacia do Paraná possui em seu registro estratigráfico uma espessa camada de rochas vulcânicas relacionadas à abertura do Supercontinente Gondwana, ocorrida durante o Eocretáceo. Por meio da interpretação de três linhas sísmicas em duas dimensões (2D), localizadas na região de Guareí

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Strike‐Slip Tectonics in the SW Barents Sea During North Atlantic Rifting (Swaen Graben, Northern Norway)

et al. 2017

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This study uses high‐quality, three‐dimensional (3‐D) seismic data to investigate the occurrence of strike‐slip faults in the Swaen Graben, SW Barents Sea. The Swaen Graben is divided into two principal subbasins: SSB1 and SSB2. The along‐strike and along‐dip displacement variations and scale relationships are analyzed for 42 faults. The displacement profiles for these faults are complex in the Swaen Graben, showing clear evidence for polycyclic fault growth and marked synsedimentary activity. The observed variations in the displacement profiles indicate complex along‐strike segmentation, linkage, and mechanical interactions at distinct structural levels. Along‐dip displacement minima indicate fault reactivation by dip linkage. Importantly, geometric evidence for strike‐slip faulting in the Swaen Graben includes the presence of extensional horsetail splay faults, positive flower structures, and minor transfer faults. This study shows that the faults in the Swaen Graben developed under extensional regimes during Late Jurassic to Early Cretaceous rifting and were reactivated by regional stresses during the Late Cretaceous. The two principal strike‐slip faults in the Swaen Graben reveal sinistral movement and are linked at a shallow depth by minor transfer faults at a relay zone. Our work further demonstrates the occurrence of Late Mesozoic strike‐slip movements in the SW Barents Sea, which were induced by regional tectonics, halokinesis, and fault block rotation. Importantly, strike‐slip faulting in the region extends perhaps into the Cenozoic interacting with extension during the North Atlantic rifting.

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Interpretation of Three-Dimensional Seismic Data

Cited by 308 publications

References 0 publications

Deep-seated faults and hydrocarbon leakage in the Snøhvit Gas Field, Hammerfest Basin, Southwestern Barents Sea

Deep-seated faults and hydrocarbon leakage in the Snøhvit Gas Field, Hammerfest Basin, Southwestern Barents Sea

Analysis of the geometry of diabase sills of the Serra Geral magmatism, by 2D seismic interpretation, in Guareí region, São Paulo, Paraná basin, Brazil

Strike‐Slip Tectonics in the SW Barents Sea During North Atlantic Rifting (Swaen Graben, Northern Norway)

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