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The AAPG/Datapages Combined Publications Database
Showing 7,126 Results. Searched 200,293 documents.
Prestack inversion for tight sandstone thin reservoirs based on anisotropic rapid reflectivity method
Zhen Yang, Zhenfeng Liu, Junzhou Liu
International Meeting for Applied Geoscience and Energy (IMAGE)
... interbedded medium with a VTI (Vertical Transverse Isotropy) component. They extended the modified reflectivity method of Phinney et al. (1987...
2024
Imaging of multiwell and multifiber walkaway DAS-VSP datasets in a CCUS demonstration project onshore Japan
Yuji Yamada, Shotaro Nakayama, Takuji Mouri, Manish Lal Khaitan, Philip Armstrong, Olga Podgornova
International Meeting for Applied Geoscience and Energy (IMAGE)
... anisotropy parameters and then updating the P-wave velocity field. This 1D vertical transverse isotropy Fourth International Meeting for Applied...
2024
NMO Application in VTI Media: Effective and Intrinsic Eta (Geophysics Paper 6)
Joel Starr, Maz Farouki
Geological Society of Malaysia (GSM)
... on velocity, v and offset x. If the data exhibits VTI (transverse isotropy with a vertical axis of symmetry) behavior, where the velocity of acoustic...
2008
Frequency-Domain Waveform Tomography in the Foothills: Velocity Model Estimation with Synthetic Long-Offset Data
Search and Discovery.com
.... Vestrum (2004) has demonstrated the effects of tilted transverse isotropy (TTI) on imaging in the Canadian foothills, and Charles et al. (2006...
2013
Abstract: Seismic Detection of Cracks in Carbonates Associated with Potash Mining; #90171 (2013)
Zimin Zhang and Robert R. Stewart
Search and Discovery.com
.... The rock displays transverse isotropy with respect to x-axis (horizontal) or azimuthal anisotropy in the x-y plane. The P-velocity along the vertical...
2013
Abstract: AVAZ Inversion for Anisotropy Parameters of a Fractured Medium; #90174 (2014)
Faranak Mahmoudian, Gary F. Margrave, and Joe Wong
Search and Discovery.com
... transverse isotropy) medium was used to facilitate the inversion. Some constraints on the vertical velocities and density were also incorporated...
2014
Abstract: Recent Advances in the Characterization of Unconventional Reservoirs with Wide-azimuth Seismic Data; #90187 (2014)
Ran Bachrach, Sagnik Dasgupta, Colin Sayers, Josimar Silva, and Stefano Volterrani
Search and Discovery.com
... The wideazimuth seismic volume was processed through an anisotropic depth migration workflow that took into account overburden heterogeneities, transverse...
2014
Abstract: Fracture Detection Via Azimuthal Analysis of Seismic Data: Snake Oil or silver Bullet?; #90187 (2014)
Mike Perz, Peter Cary, Xinxiang Li, and Satinder Chopra
Search and Discovery.com
... assumption The AVAZ and VVAZ inversions are based on the horizontal transverse isotropy (HTI) anisotropic theory. The HTI model in turn assumes the existence...
2014
Abstracts: Microseismic Source Inversion in Anisotropic Media; #90173 (2015)
Scott Leaney, Chris Chapman, and Tadeusz Ulrych
Search and Discovery.com
... may have on microseismic sources and their inversion. The strongest and most prevalent type of anisotropy in sedimentary rocks is transverse isotropy...
2015
Abstracts: Seismic Wave Propagation and Imaging in Heterogenous Media; #90173 (2015)
Yijian Meng, Emmanuel Bongajum, and Bernd Milkereit
Search and Discovery.com
... for transverse isotropy. Thompsen (1986) showed that anisotropy parameters can be used to come up with an equivalent homogeneous anisotropic model...
2015
Abstracts: Shale Gas: An Unconventional Reservoir; #90173 (2015)
Sunjay
Search and Discovery.com
... of formations in shale gas basins that are being exploited today, the maximum principle stress is vertical, giving rise to HTI (horizontal transverse...
2015
Abstract: Seismic Anisotropy in Coal Beds; #90211 (2015)
David Gray
Search and Discovery.com
...) method (Rüger, 1996) is used to detect HTI (Horizontal Transverse Isotropy) anisotropy. It has been applied to the seismic gathers from the Erskine 3D...
2015
Seismic Reservoir Characterization and Pre-stack Inversion in Resource Shale Plays, #41467 (2014),
Brian Russell
Search and Discovery.com
..., especially the analysis of Vertical and Horizontal Transverse Isotropy (VTI/HTI). VTI consists of horizontal layers and can be caused by fine layering...
2014
Elastic Anisotropy of Shales Revisited; #41557 (2015)
Marina Pervukhina, Patrick N. J. Rasolofosaon
Search and Discovery.com
... with the theoretical work of Sayers (2005), who described the elastic anisotropy of shales, assuming transverse isotropy for both the ―crystal‖ symmetry...
2015
Prestack Seismic Data Inversion for Shale Gas Reservoir Characterization in China; #41829 (2016)
Gang Yu, Yusheng Zhang, Uwe Strecker, Maggie Smith
Search and Discovery.com
... of Horizontal Transverse Isotropy (HTI) the model is parallel vertical cracks (Thomsen, 1988). P waves travel with different velocities depending...
2016
Reduction of Gross Rock Volume Uncertainty in a Salt Flank Structure Using Dipmeter and Image Log Data
Carmen Garcia-Carballido, Aadam Styles, Michael Poppelreiter
AAPG Special Volumes
...) seismic volumes were processed with a proprietary technology using different anisotropy algorithms: vertical transverse isotropy (VTI) and tilted...
2010
New stability constraints for pseudo-acoustic finite difference TTI modelling and inversion
Rodrigo Fuck, Lorenzo Casasanta, Marcel Nauta
International Meeting for Applied Geoscience and Energy (IMAGE)
... to simulate seismic wave propagation in media with vertical (VTI) or tilted-transverse isotropy (TTI) symmetry. This approximation enables faster...
2024
Assessment of a Marcellus Shale Prospect Using Seismic, Microseismic, and Completions Data
Scott Singleton, Mark Suda
GCAGS Transactions
... corrected for vertical transverse isotropy (VTI) and horizontal transverse isotropy (HTI) far-offset effects in Phase 1, and thus have reflectors already...
2012
Abstract: Plate Tectonic Constraints on the History of the Transverse Ranges, by T. Atwater and J. Stock; #90981 (1994).
Search and Discovery.com
1994
Petrophysical Evaluation of Organic Richness and Brittleness of Shale for Unconventional Hydrocarbon Prospecting: A Case Study on Vadaparru Shale, Krishna Godavari Basin, India
Arijit Sahu, Milan Kanti Das
Unconventional Resources Technology Conference (URTEC)
... the depth, when it comes to sonic velocities. This 6 URTEC-198280-MS feature, common to shale, is known as transverse isotropy with a vertical axis...
2019
Vaca Muerta Sequence Stratigraphy and Volcanic Intrusions: Impact on Unconventional Project Development
Manuel Fantin, Federico Gonzalez Tomassini, Hernan, Reijenstein, Lipinski Christopher
Unconventional Resources Technology Conference (URTEC)
... reversion, reaching an average gradient of 1.02 psi/ft. Vertical transverse isotropy in elastic properties is a characteristic of finely laminated...
2014
Determining Static Elastic Anisotropy in Shales from Sidewall Cores: Impact on Stress Prediction and Hydraulic Fracture Modeling
Brian Crawford, Yueming Liang, Philippe Gaillot, Kelvin Amalokwu, Xianyun Wu, Robert Valdez
Unconventional Resources Technology Conference (URTEC)
... and ). Anisotropy or “vertical transverse isotropy” (VTI) symmetry implies that at each point in the rock there is an axis of symmetry of rotation...
2020
Seismic Technology Evolution to Support Prospect Evaluation, Exploration Well, and Geological Appraisal
Frederic J. Billette, Yan Quist
GCAGS Transactions
... several fast tracks and a full model re-build using latest seismic processing technology, TTI (tilted transverse isotropy) RTM (reverse time migration...
2011
Abstract: Seasonal Variations in the Morphology and Sedimentology of a Point Bar on the Brazos River of Central Texas
W. M. Connolly, M. Denham, M. Peterson, C. Ritter, J. Mazzullo
GCAGS Transactions
... water level reached a maximum of 28 feet. When the waters receded, the two-tier morphology was completely buried beneath a series of transverse bars...
1986
Retrieving high-resolution acoustic impedance using full-waveform inversion in presalt reservoir setting, offshore Brazil
Akshat Abhishek, Alok K. Soni, Rene-Edouard Plessix, Martijn Blaauw, Jaydip Guha, Gautam Kumar
International Meeting for Applied Geoscience and Energy (IMAGE)
... visco-acoustic VTI (vertical transverse isotropy) anisotropic FWI using short-offset OBN seismic data (up to 3km) for frequency range of 5-35Hz...
2022