Advanced Multiattribute Imaging and Geobody Delineation of Jurassic and Triassic Stratigraphic Targets

McArdle, Nicholas; Purves, Steve; Lowell, James D.; Norton, Dale; Basford, Helen; Kristensen, Trond

doi:10.5724/gcs.11.31.0230

Cited by 5 publications

(1 citation statement)

References 5 publications

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“…detailed structures that are visible using a variety of semi-automated and automated techniques (McArdle et al, 2010).…”

Section: mentioning

confidence: 99%

Visualizing Geological Structure with Subtractive Color Blending

Purves¹,

Basford²

2011

Attributes: New Views on Seismic Imaging -- Their Use in Exploration and Production: 31st Annual

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3D seismic attributes enable seismic interpreters to gain a more complete understanding of subsurface geology resulting in more complete and detailed interpretations. Building a thorough understanding of 3D structural variations and fault networks often requires working with multiple seismic attributes due to the fact that different attributes convey different information and that the seismic signature of faults changes through the data set. Color blending techniques have proven effective in intuitively allowing interpretation of information in multiple seismic attributes simultaneously. One of the most successful techniques uses an RGB (Red, Green, and Blue) color model to present data in a manner which is in tune with the way people perceive color. These types of blend are highly effective at visualizing data such as results of poststack frequency decomposition or offset-stack volumes. We present an alternate color-blending model based on combining attributes using the subtractive primary colors cyan, magenta, and yellow (CMY). When used with structural attributes, the subtractive model produces displays that are predominately light, and structural variations and faults are associated with darker shades of varying hues and black, and the model is aligned with the way we are accustomed to visualize fault and structural attributes, making these displays very intuitive. In this paper we provide a number of examples of how these blends can be used to show how fault character changes laterally through a fault network and relate C

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“…detailed structures that are visible using a variety of semi-automated and automated techniques (McArdle et al, 2010).…”

Section: mentioning

confidence: 99%

Visualizing Geological Structure with Subtractive Color Blending

Purves¹,

Basford²

2011

Attributes: New Views on Seismic Imaging -- Their Use in Exploration and Production: 31st Annual

Self Cite

View full text Add to dashboard Cite

show abstract

References

2018

Seismic Attributes as the Framework for Data Integration Throughout the Oilfield Life Cycle

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The use of geologic expression workflows for basin scale reconnaissance: A case study from the Exmouth Subbasin, North Carnarvon Basin, northwestern Australia

McArdle¹,

Iacopini

KunleDare³

et al. 2014

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The focus of this study is to demonstrate how seismic attributes can be used in the interpretation workflow to rapidly obtain a high-resolution view of the geology that is imaged within a seismic data set. To demonstrate the efficacy of seismic attribute analysis to basin scale reconnaissance, we apply a workflow to seismic data sets from the Exmouth Subbasin, northwestern Australia, with the aim of determining the geologic expression of the subsurface. Of specific interest are Barrow Group Jurassic and Cretaceous fluvial and marine sediments, that were faulted during the Jurassic-Cretaceous rifting associated with the breakup of East Gondwana. Regional-scale interpretations are made to develop a tectonostratigraphic context to the investigation. Target-level analyses, focused on features of exploration interest identified using regional reconnaissance, are made to calibrate attribute response and demonstrate the effectiveness of seismic attributes for rapid evaluation of prospectivity in the initial stages of exploration. The main structural episodes are distinguished using dip and azimuth attributes, and faulting is expressed using a combination of edge attributes which are used to create fault trend lineations. We observe three main structural trends: the main northeast–southwest Jurassic-Cretaceous syn-rift primary fault orientation of 48°, a secondary trend of 108°, taken to represent secondary conjugate faulting and a third trend of 100° interpreted as the reactivation of these faults into the postrift sediments. Stratigraphic attributes that respond to amplitude and frequency are used to create reservoir scale geobodies of faulted Macedon turbidites, which in turn are used for detailed tuning sensitivity analysis. The final part of the investigation is of the syn-rift magmatic system responsible for sills and dikes that exploit the normal fault network. These intrusive and extrusive features are important as are potential drilling hazards and can act as baffles to hydrocarbon migration.

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Advanced Multiattribute Imaging and Geobody Delineation of Jurassic and Triassic Stratigraphic Targets

Cited by 5 publications

References 5 publications

Visualizing Geological Structure with Subtractive Color Blending

Visualizing Geological Structure with Subtractive Color Blending

References

The use of geologic expression workflows for basin scale reconnaissance: A case study from the Exmouth Subbasin, North Carnarvon Basin, northwestern Australia

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