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The AAPG/Datapages Combined Publications Database
Showing 473 Results. Searched 195,354 documents.
Simple Models for the Stress-Dependence of Anisotropic Seismic Velocities in Fractured Rock; #120053 (2012)
Richard L. Gibson, Jr. and Kai Gao
Search and Discovery.com
... dry and fluid-saturated Thomsen’s parameters: Phys. Earth planet. Inter., v. 172, p. 116-124. Maultzsch, S., M. Chapman, E. Liu, and X.Y. Li, 2003...
2012
Seismic Anisotropy VTI Modeling and Mechanical Properties of Kerogen in Gas Shale, #42486 (2020).
Anggoro S. Dradjat, Agus Djamil, M. Firwan Aprizal
Search and Discovery.com
... than zero. Second parameters for measuring mechanical anisotropy is gamma or S wave velocity Thomsen parameter which is measuring difference...
2020
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
Enabling the Next Generation of Hydrocarbon Exploration
Stefano Volterrani, Tim Matava, Zakir Hossain, Shihong Chi, Brian W. Horn
GEO ExPro Magazine
... choice of Thomsen parameters (Figure 2). The traditional approach for building an anisotropic model is to use checkshot or sonic log data and isotropic...
2018
Workflow for Nonlinear AVO Inversion to Estimate Seismic Anisotropy and Geomechanical Properties of Shale
Un Young Lim, Richard L. Gibson Jr., Nurul Kabir
Unconventional Resources Technology Conference (URTEC)
... with Thomsen's parameters (Thomsen, 1986), bulk density, and kerogen volume fraction for ten different shale formations. The values are originally collected...
2019
Abstract: Elastic Full Waveform Inversion For Land Walkaway VSP Data; #90224 (2015)
Olga Podgornova, Scott Leaney, Marwan Charara, and Eric von Lunen
Search and Discovery.com
... velocities VP 0 / V , density , and Thomsen anisotropic parameters , (Thomsen, 1986). We exploit an axial symmetric approximation...
2015
Multi-Azimuthal Walkway VSP for Full Azimuth Seismic Calibration
Konstantin Galybin, Anastasia Poole, Michael Giles
Petroleum Exploration Society of Australia (PESA)
..., processing and use of such survey for validation and calibration of processing parameters and inversion results of a recent pointsource/point-receiver...
2016
3-D Geomechanical Modeling for Field Development of a Colombian Shale Play
Leonardo Arias Medina, Azra N. Tutuncu
Unconventional Resources Technology Conference (URTEC)
... and 5), and Thomsen’s parameters, Mpsi (track 6). The static geomechanical properties are calculated using the dynamic elastic properties, shale...
2019
Abstracts: Determining Elastic Constants of an Orthorhombic Material by Physical Seismic Modeling; #90173 (2015)
Faranak Mahmoudian, Gary F. Margrave, P. F. Daley, and Joe Wong
Search and Discovery.com
... model. The Thomsen parameters (ε, δ, γ) are calculated from elastic constants and presented in Table (2). Table (1): Density normalized elastic...
2015
Abstract: An Effective Medium Model for a Fractured Carbonate Reservoir Undergoing CO2 Flood at Weyburn Field, Saskatchewan; #90174 (2014)
Chris Blackwood
Search and Discovery.com
... effective medium, and Thomsen parameters (1986) are calculated and employed in the Ruger equation (1996) to understand amplitude variation with offset...
2014
Optimized characterization workflow for naturally fractured reservoirs using seismic anisotropy attributes in the Middle Magdalena Valley basin, Colombia
Oscar Moreno, Enrique Casaña, Luis Figuera, Iván Higuera, Diego García, Jorge Acosta, Benjamin Roure
International Meeting for Applied Geoscience and Energy (IMAGE)
.... Downton, J. E., and B. Roure, 2015, Interpreting azimuthal Fourier coefficients for anisotropic and fracture parameters: Interpretation, 3, no. 3, ST9...
2023
Estimation of Total Organic Carbon (TOC) Content of Shale from AVO Inversion: A New Crossplot Approach Based on Zoeppritz Equations
Un Young Lim, Richard Gibson Jr., Nurul Kabir
Unconventional Resources Technology Conference (URTEC)
... using the full Zoeppritz solutions for reflection amplitudes. The inversion can correctly estimate five different parameters of anisotropic media like...
2019
Anisotropic Assessment of Middle and Lower Bakken Formations using Multi-Physics Measurements
Gama Firdaus, Valeria Suarez, Kurt Livo, Jyoti Behura, Manika Prasad
Unconventional Resources Technology Conference (URTEC)
... be extended to other geophysical parameters that are related to pressure, such as Thomsen’s anisotropy parameter, real conductivity, imaginary...
2020
Semiautomated Lateral Landing Advisor for On-Time Decisions Utilizing Digital Borehole Sonic Services and Next-Generation Cloud-Based Fracturing Design
Edgar Velez, Juan David Estrada, Adam Donald, Romain Prioul, Ting Lei, Erik Wielemaker, Violeta Lujan
Unconventional Resources Technology Conference (URTEC)
... on four parameters: mud velocity and Thomsen’s , and (two parameters are assumed to be known and used as input: one compressional and one shear...
2021
Estimating Stimulation-Zone Anisotropy Effects During Microseismic Monitoring
Martin Karrenbach, Steve Cole, Victor Yartsev
Unconventional Resources Technology Conference (URTEC)
... exhibit anisotropic behavior at larger seismic scales. We extract anisotropy parameters epsilon, delta, and gamma (Thomsen parameters) from the upscaled...
2015
Abstract: Velocity Model Calibration Effects on Microseismic Locations; #90187 (2014)
J. Akram and D. W. Eaton
Search and Discovery.com
... with different levels of VTI in shale layer. The anisotropy parameters are considered in the range of 0-20% (weak anisotropy). In Thomsen parameters, γ...
2014
Abstract: Improving Borehole Instability Analysis by Investigating the Impacts of Stress and Rock Anisotropy; #90224 (2015)
Qing Jia, Douglas Schmitt, Inga Moeck, and Randy Kofman
Search and Discovery.com
...). As illustrated in Figure 3, despite the fact that this material is relatively anisotropic (Thomsen ε = 0.25, γ = 0.17, δ = 0.25), the stress...
2015
Using Sonic and Resistivity Effective Medium Theories to Quantify the Influence of Rock Fabric on the Mechanical Properties of Organic Mudrocks
Paul Sayar, Carlos Torres-Verdín
Unconventional Resources Technology Conference (URTEC)
... of the rock penetrated by the well. Thomsen’s parameters (1986), URTeC 2142775 9 and , are used to estimate the degree of anisotropy of the rock where...
2015
Abstract: Velocity Updating for Converted-Wave Prestack Time Migration; #90211 (2015)
Xiaogui Miao
Search and Discovery.com
.... For isotropic media, setting χeff to zero reduces velocity updating to two parameters, Vc and γeff. In this abstract, I will discuss only the anisotropic case...
2015
Anisotropy Kinematics Clarified through Regime Rrays Model
William J. Vetter
Search and Discovery.com
...“ in the conventional ray theory sense are involved in wavefront progression when triggered by idealized impulse excitation at a point source in an anisotropic...
Unknown
Anisotropy Kinematics Clarified through Regime Rrays Model
William J. Vetter
Search and Discovery.com
...“ in the conventional ray theory sense are involved in wavefront progression when triggered by idealized impulse excitation at a point source in an anisotropic...
Unknown
Advances in Depth Imaging Technology: Rock Physics Guided Migration of Seismic Data in 3D
Nader C. Dutta, Sherman Yang, Jianchun Dai
Indonesian Petroleum Association
... of well calibration due to unreliable anisotropic parameter estimation (epsilon and delta; Thomsen, 1986), (4) The difference between seismic processing...
2012
Abstract: Anisotropy Measurements in a Multi-faced Core Sample by using Pulse Transmission Method; #90174 (2014)
Jaime Meléndez Martínez, Douglas R. Schmitt, and Randolph Kofman
Search and Discovery.com
... elastic constants Thomsen (1986) developed the so-called “Thomsen parameters” to quantified anisotropy in a VTI medium: (9) (10...
2014
What Are You Interpreting? Your Seismic Image Could Be Misleading You!
R. T. Newrick, E. P. Gomez, J. K. Pullishy, S. D. Jensen, J. M. de Armas
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... model, Vεδθ, in the case of anisotropy, specifically transverse isotropy that may be described using the Thomsen parameters ε and δ (Thomsen, 1986...
2006
Abstract: The Evolving Role of Geophysics in Exploration. From Amplitudes to Geomechanics (Paper C7)
E. C. Andersen, D. Gray
Geological Society of Malaysia (GSM)
... and fluids from seismic data. (Figure 2). Thomsen (1985) simplified the concept of seismic anisotropy, the variation of physical properties in different...
2012