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The AAPG/Datapages Combined Publications Database
Showing 527 Results. Searched 200,685 documents.
Fracture Detection by Azimuthal Differential Residual Moveout
Juefu Wang
Search and Discovery.com
..., and then compute the difference. These differential time-variant trim statics are used to extract fracture orientation and Thomsen’s delta parameter. We explore...
Unknown
Abstract: A Ray+Waveform Inversion for the Potency Tensor; #90187 (2014)
Scott Leaney and Chris Chapman
Search and Discovery.com
... function. Posterior covariances are more closely related to the source parameters of interest, free from anisotropic distortion. We review the method...
2014
3D anisotropic wavefield simulation with an advanced time-space domain temporal high-order SGFD solution
Xinquan Wang, Long Wu, Yunshan Lei, Panpan Lv, Huibing Zhao, Xiaoling Guo
International Meeting for Applied Geoscience and Energy (IMAGE)
... the symmetry axis, ε and δ are Thomsen’s anisotropic parameters (Thomsen, 1986). In the conventional discretization scheme, a temporal 2ndorder and spatial high...
2024
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
Abstract: Numerical Modeling for Different Types of Fractures; #90187 (2014)
Xiaoqin Cui, Laurence R. Lines, and Edward S. Krebes
Search and Discovery.com
... to transversely isotropic media (TI). The azimuthal anisotropic parameters (Thomsen, 1986) are related to the fracture character parameters: tangential...
2014
Understanding Acoustic Responses in Horizontal Wells: Tools, Techniques, and Lessons Learned
Alexei Bolshakov, Sergio Sarmiento, Haijing Wang, Kris Walker, Mason Edwards, Ricardo Freitas
Unconventional Resources Technology Conference (URTEC)
... properties and their effects on data acquisition, 2) acquisition parameters, and 3) the impact of logging conditions, such as stick-slip, on data...
2025
Shear-wave value for seismic imaging: Lupin 9C Seismic 3D Survey, Midland Basin, West Texas
Hermes Malcotti, Ranjan Dash, James Davenport, Gary Murphy, James DiSiena, James Gaiser
International Meeting for Applied Geoscience and Energy (IMAGE)
... coefficients and azimuthal AVO analysis in anisotropic media: SEG, doi: https://doi.org/10.1190/1.9781560801764. Thomsen, L., 1986, Weak elastic...
2022
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
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
Multi-scale anisotropic dispersion and attenuation in VTI media with penny-shaped cracks
Yanwen Feng, Zhaoyun Zong, Guangzhi Zhang
International Meeting for Applied Geoscience and Energy (IMAGE)
... representation of the frequencydependent anisotropy can be given by calculating the frequency dependence of the Thomsen anisotropy parameters. From Figure 2 we see...
2023
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
Tensile radiation from slip in a medium with rough fractures
Scott Leaney, Chris Chapman
International Meeting for Applied Geoscience and Energy (IMAGE)
... fractures, a VTI background medium is used (Vp=4km/s, Vs=2.2km/s, density=2.5gm/cc) with Thomsen parameters (𝜀, 𝛿, 𝛾) = (0.28,0.13,0.22). Together...
2022
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
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
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
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
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
PSDM for Unconventional Reservoirs? A Niobrara Shale Case Study
Morgan P. Brown, Joseph H. Higginbotham, Dave List, Chris Lang
Unconventional Resources Technology Conference (URTEC)
... of faults. Vertical mistie correction predicted the top Niobrara to within 4 feet on a new well, but we show enough variation in Thomsen to justify...
2013
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
PSDM for unconventional reservoirs? A Niobrara Shale case study; #80405 (2014)
Morgan P. Brown, Joseph H. Higginbotham, Cosmin Macesanu, Oscar E. Ramirez, Dave List, Chris Lang
Search and Discovery.com
... Niobrara to within 4 feet on a new well, but we show enough variation in Thomsen δ to justify anisotropic PSDM. Azimuthal velocity analysis using Wave...
2014
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
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
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
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