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Keywords: unconformity
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Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4094223
... unconformities were delineated and determined to be incised valleys which are known to have formed during eustatic lowstand events. The evolution of these incised valleys and their architectural elements in response to rapid transgression was investigated, and various seismic attributes were employed...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3751498
... At the Bouldin Creek outcrop locality near Austin, Texas, an Early Turonian unconformity was defined, and its associated 2 million year hiatus documented using ID-TIMS U/PB dating of zircons. The hiatus explains why the positive carbon isotope (δC13) excursion, typically associated...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3584660
... zones located at the basement unconformity (Moul and Witherly, 2020). The gneissic basement is overlain by sandstones and variable glacial overburden. ZTEM and HeliTEM profiles and inversion results across a shear zone conductor assumed to be located at the unconformity at 650 m depth are shown...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594477
... as an efficient work plan for recompletion and stratigraphic column, and are a product of generation and reconditioning of wells that may have a positive impact on reactivation of the regional events, as mentioned before. the company cash flow. Therefore, emerges the idea to The most important unconformity...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3216886
... attributes centered at analysis sample. Unfortunately, current methods usually fail to produce an accurate estimate of dip and azimuth for the samples which locate nearby the chaotic reflections such as faults and unconformity. Choosing a proper temporal window size along time axis is another challenge...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2996559
.... Presentation Date: Wednesday, October 17, 2018 Start Time: 1:50:00 PM Location: Poster Station 12 Presentation Type: Poster annual meeting amplitude unconformity sequence seismic data upstream oil & gas regional unconformity seismic geomorphology depositional element seismic...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2995649
... anisotropic parameter offshore gambia jurassic carbonate event undulation geology geologically gambia aptian unconformity case study migration annual meeting high-resolution tomography seg international exposition reservoir characterization unconformity tomography tomographic...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17744260
... Presentation Type: ORAL phase imaging condition shabelansky identification seg seg international exposition shallow structure mapping unconformity upstream oil & gas velocity model imaging condition phase conversion conversion arrival time simulation reservoir characterization...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17746077
... structures including faults and unconformities. We first use predictive painting to spread the lithological information along seismic images from well locations. Then we measure the geologic distance following seismic horizons, and modify the distance across faults during interpolation based on fault...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17664132
... ABSTRACT I present a processing procedure to automatically interpret all the geologic surfaces including faults, unconformities, horizons, and salt boundaries from a 3D seismic image. In this procedure, I first extract fault surfaces, estimate fault slips, and undo the faulting in the seismic...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13960523
... characterization interpretation western canada sedimentary basin annual meeting reflection upstream oil & gas unconformity inversion seg seg international exposition Castagna , J. P. , M. L. Batzle , and R. L. Eastwood , 1985 , Relationships between compressional-wave...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-1195
... estimations, implies a potential phase changing p-wave amplitude versus offset (AVO) response. The seismic wavefield simulation is recorded both horizontally on the surface and vertically in a borehole. The synthetic data reveals the effect of widespread alterations above the basement unconformity on seismic...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-0777
... Summary Vail and his co-workers invented seismic stratigraphy on the basis of a fundamental assumption (Mitchum et al., 1977; Vail et al., 1977a, b, c) that primary seismic reflectors follow chronostratigraphic surfaces (stratal surfaces and unconformities) rather than time-transgressive...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-1485
... below most coastal waterways, the result of active tectonics and extensive glaciation that has uplifted and scoured pre-Holocene strata. We identify two regional unconformities within PWS that we presume to represent the onset of post "last glacial maxima" deposition approximately 15 ka and a neoglacial...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-0183
... a residual-structural map of a nearby unconformity, (2) realization of seismic lithology by 90° phasing of seismic traces, and (3) mapping of geomorphologic patterns of depositional systems on stratal slices. Following an improvement in results, this workflow is now being implemented in the area to assist...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-0296
... Summary Automated horizon-extraction methods often have difficulty extracting horizons that terminate at unconformities or sequence boundaries. Using sequence boundaries as constraints is one way to solve this problem, but there exists no automated method for sequence-boundary extraction. We...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-0810
... unconformity. This unconformity is a key to the development of the Grosmont resource because the resource abuts the unconformity. Using legacy seismic data and available well log information we were able to define the Devonian unconformity as a mature karst surface within observable features such as dolines...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-1177
... instantaneous phase zhong seg rgt result wheeler diagram unconformity phase profile unconformity constraint seismic profile closest value annual international meeting main menu rgt profile wheeler domain instantaneous phase profile reservoir characterization real seismic data...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-0027
... geophysics unconformity ideal solution reservoir characterization seismic image vmf fk filter Reducing random noise in vector field using vector median filter Yike Liu* , Institute of Geology and Geophysics, Chinese Academy of Sciences; Yi Luo, Saudi Aramco Summary The scalar median filter (SMF...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-0313
... as Hess Escarpment correspond with deeper flower structures. Older basement-involved structures were inverted since Eocene. Tectonic inversion was interpreted from different strata geometries, relations of strata, growth strata and reflector terminations. A regional unconformity defined by erosional...

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