Coherency calculations in the presence of structural dip

Marfurt, Kurt J.; Sudhakar, Vasudhaven; Gersztenkorn, Adam; Crawford, Kelly D.; Nissen, Susan E.

doi:10.1190/1.1885964

Cited by 10 publications

(9 citation statements)

References 2 publications

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“…To characterize fault regions in time sections, we calculate the discontinuity in horizons using the semblance attribute proposed by Marfurt et al [1]. Since the semblance attribute is calculated based on local dip information and the neighboring average, it outperforms other seismic attributes in identifying the existence of faults.…”

Section: A Rgb Blending Of Semblance Mapsmentioning

confidence: 99%

“…Faults, caused by the movement of rocks, represent discontinuity along horizons. To characterize the discontinuity, researchers have introduced various seismic attributes such as semblance [1], variance [2], curvature [3], and gradient amplitude [4] [5]. In addition to these basic attribute-based approaches, a number of studies have proposed complex methods involving image processing techniques to semi-automatically detect faults.…”

Section: Introductionmentioning

confidence: 99%

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Fault detection using color blending and color transformations

Wang

Temel

AlRegib

2014

2014 IEEE Global Conference on Signal and Information Processing (GlobalSIP)

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In the field of seismic interpretation, univariate databased maps are commonly used by interpreters, especially for fault detection. In these maps, the contrast between target regions and the background is one of the main factors that affect the accuracy of interpretation. Since univariate data-based maps are not capable of providing a high-contrast representation, to overcome this issue, we turn them into multivariate data-based representations using color blending. We blend neighboring time sections or frames that are viewed in the time direction of migrated seismic volumes as if they corresponded to the red, green, and blue channels of a color image. Furthermore, to extract more reliable structural information, we apply color transformations. Experimental results show that the proposed method improves the accuracy of fault detection by limiting the average distance between detected fault lines and the ground truth into one pixel.

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Section: A Rgb Blending Of Semblance Mapsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fault detection using color blending and color transformations

Wang

Temel

AlRegib

2014

2014 IEEE Global Conference on Signal and Information Processing (GlobalSIP)

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show abstract

“…Semblance is calculated over a 3D analysis window, with a defined dip and azimuth for each point in the data volume (zero dip for a flattened volume) (Marfurt, et al, 1999;Chopra & Marfurt, 2007). Semblance is defined as the ratio of energy of the average trace to the average energy of all the traces along a specified dip, averaged over a specified analysis window.…”

Section: Preliminary Interpretationmentioning

confidence: 99%

Processing and interpretation of time-lapse seismic data from a heavy oil field, Alberta, Canada

Kelly

Lawton

2012

SEG Technical Program Expanded Abstracts 2012

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The monitoring of a SAGD heavy oil reservoir is commonly executed through time-lapse 3D seismic surveying, focused on identifying areas of steam stimulation by tracking the movement of a steam front, and identifying areas of bypassed reserves. In this thesis, we processed and interpreted a 4D -3C seismic dataset, identified time-lapse amplitude anomalies and isochron time-delays associated with the injection of high volumes of steam into a McMurray Formation reservoir. Through processing, and the application of a novel calibration procedure, non-production related differences between the baseline and monitor seismic surveys were minimized. Production-related differences were analyzed through a variety of geophysical techniques, and were projected into a map display to delineate the spatial position of the reservoir steam zones. It was interpreted that the observed amplitude anomalies corresponded to steam injection, while concurrent time-delays represent reservoir heating above pre-injection ambient temperatures.

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“…O trabalho desenvolvido posteriormente por Marfurt et al (24) sugere uma modificação no cálculo do atributo de autoestrutura, visto que a proposta original para este atributo não levava em consideração as medidas de orientação. De acordo com os autores, a precisão no cálculo do mergulho está diretamente associada à detecção da maior variação do sinal, representando as falhas com mais qualidade e melhorando a resolução lateral do atributo.…”

Section: Autoestrutura (Eigenstructure)unclassified

“…Em outras palavras, as características geológicas e estruturais da região são identificadas com mais clareza. No entanto, dois aspectos podem dificultar a utilização deste atributo na prática: o alto custo computacional (25), como citado anteriormente, e a dependência do atributo com relação à precisão no cálculo do mergulho (24). Além disto, nos três atributos de coerência, é possível observar a presença do ruído de aquisição, mais visível na parte de baixo da imagem.…”

Section: Análise Comparativa Dos Atributos De Coerênciaunclassified

Suavização De Dados De Amplitude Através De Difusão Anisotrópica Com Preservação De Feições Sísmicas

PAMPANELLI¹

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Coherency calculations in the presence of structural dip

Cited by 10 publications

References 2 publications

Fault detection using color blending and color transformations

Fault detection using color blending and color transformations

Processing and interpretation of time-lapse seismic data from a heavy oil field, Alberta, Canada

Suavização De Dados De Amplitude Através De Difusão Anisotrópica Com Preservação De Feições Sísmicas

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