Abstract: To TTI or not to TTI? Semi-Automated 3D Tomographic Velocity Analysis in the Canadian Foothills: A Case History; #90211 (2015)

Sylvestre Charles, David Mitchell, Rob Holt, Jiwu Lin, and John Mathewson

Search and Discovery.com

... of Spatially Variant Anisotropic Parameters (TTI) The estimation of anisotropy parameters is not a trivial problem (Tsvankin and Thomsen, 1995, Pratt...

ABSTRACT: Anisotropic 3-D Pre-Stack Time Migration Processing of Oguali 3-D Survey in Cental Niger Delta; #90115 (2010)

Tunde I. Okunuga, Robinson S. Dike, Timothy J. Brooks, and Lawrence Ajabor

Search and Discovery.com

... therefore, the anisotropy is fully quantified in terms of Thomsen’s parameters Delta, epsilon, and eta. In this paper we present the results...

Joint Anisotropic Parameter Inversion Based on Nonhyperbolic Moveout and Azimuthal Amplitude Variance

Fangyu Li, Jie Qi, Bin Lyu, Kurt J. Marfurt

Unconventional Resources Technology Conference (URTEC)

..., and they distort seismic reflection together. So, joint anisotropy parameter inversion is highly in need. Thomsen weak-anisotropy parameters are sensitive...

NMO Inversion for Multilayer Subsurface with Horizontal Transverse Isotropic layers

E. Blias

Search and Discovery.com

... dependent NMO velocity to determine vertical P and S velocities and anisotropic parameters E P ˆ and E . SV AAPG Search and Discovery Article #90168©2013...

NMO Inversion for Multilayer Subsurface with Horizontal Transverse Isotropic layers

E. Blias

Search and Discovery.com

... dependent NMO velocity to determine vertical P and S velocities and anisotropic parameters E P ˆ and E . SV AAPG Search and Discovery Article #90168©2013...

Abstract: Estimation of Epsilon Parameter of Fracture Induced Anisotropy by In-Situ Seismic Refraction Survey

Eko March Handoko Masyhur, Abdul Ghani Md Rafek, Khairul Arifin Mohd Noh

Geological Society of Malaysia (GSM)

.... Thomsen’s anisotropy parameters summarized this velocity variation to improve the accuracy of subsurface imaging. A seismic refraction survey...

Anisotropic PP and PSv Prestack Depth Migration of 4C (OBC) Seismic Data, Offshore Trinidad

Tony Johns

Search and Discovery.com

...) equation: K = ( H - G ) / ( 1 + 2G ) (1) The anisotropic Thomsen parameters were further updated after the PZ and PS depth images were registered...

Anisotropic PP and PSv Prestack Depth Migration of 4C (OBC) Seismic Data, Offshore Trinidad

Tony Johns

Search and Discovery.com

...) equation: K = ( H - G ) / ( 1 + 2G ) (1) The anisotropic Thomsen parameters were further updated after the PZ and PS depth images were registered...

The Impact of Anisotropic Mechanical Properties on Stimulation and Wellbore Stability in the Beetaloo Basin, Northern Territory, Australia

J Adam Donald, Thomas J. Neville

Unconventional Resources Technology Conference (URTEC)

... to determine the TI anisotropic elastic parameters accurately, rapidly, and robustly using a data driven machine learning aided inversion from full waveform...

Seismic reservoir characterization in a VTI anisotropic media: Case study in Malay Basin

Amir Abbas Babasafari, Deva Prasad Ghosh, Seyed Yaser Moussavi AlAshloo, Yasir Bashir, Chica Sambo, Ahmed M.A. Salim

Geological Society of Malaysia (GSM)

.... First using Backus averaging and Berryman equations, stiffness parameters together with Thomsen parameters at well locations are Warta Geologi, Vol. 44...

Seismic Anisotropy Modelling and Fluid Substitution for Carbon Dioxide (Co2) Well Storage Project In Carbonate Reservoir

Pebrian Tunggal Prakosa, Thariq Guntoro, Ahmat Dafit Hasim, Okok Wijaya, Yulia Putri Wulandari

Indonesian Petroleum Association

... Parameters Thomsen (1986) introduced a more effective and scientiffic to calculate anisotropic parameters. He gave the parameters epsilon, delta and gamma...

The effects of seismic anisotropy on mining seismology

Andrew King

Petroleum Exploration Society of Australia (PESA)

... isotropic (VTI) model would be appropriate. This model requires five parameters for its specification, for which Thomsen’s formulation (Thomsen, 1986) has...

Anisotropic Depth Migration Applied in an Area of the Colombian Llanos Foothills as a Tool for Understanding the Structure in Depth

Isabel Cristina Florez, Rob Vestrum

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

..., and Thomsen’s (1986) anisotropic parameters, ε and δ. Since the velocity changes with direction relative to the dip of the strata, an accurate...

Abstract: Geomechanics, Anisotropy and LMR; #90174 (2014)

Marco Perez, Bill Goodway, and David Close

Search and Discovery.com

... for AVAZ approximated to two terms by two of the three Thomsen parameters, δ and γ. More specifically, the anisotropic gradient term has the form...

ABSTRACT: Anisotropy Analysis in Shale Using Advanced Sonic Data — Bakken Case Study, by Ostadhassan, Mehdi; Zeng, Zhengwen ; Jabbari, Hadi; #90142 (2012)

Search and Discovery.com

Improved Structural Imaging of the Karama Seismic Survey Using Anisotropy Kirchhoff and Beam Depth Migration

Zbigniew Ostapiuk, Bee Jik Lim, Martin Bayly

Indonesian Petroleum Association

... survey within the same basin to derive the Thomsen parameters. The tilt parameters for the anisotropy symmetry axis were estimated from the seismic dip...

Abstract: P-wave AVAz Modeling: A Haynesville Case Study; #90224 (2015)

Jon Downton

Search and Discovery.com

... the anisotropic elastic model used in forward modeling. Linear slip theory is briefly reviewed with the goal of introducing the key concepts and parameters...

ABSTRACT: North Sumatra Basin Organic Content Estimation Using Anisotropic Rock Physics Modeling Based On Core, Log And Seismic Data

R. Ryacudu, T. S. Priantono, P. M. O. Iriana, G. W. Purnama, D. Risdianto

The Society for Organic Petrology (TSOP)

...  anisotropic  normal  moveout  (NMO).  The  anisotropic  parameters  (Thomsen,   1986)   used   in   the   NMO   modeling...

Anisotropic depth migration in the Colombian Llanos Foothills as a key to understanding the structure in depth

emamedov

Search and Discovery.com

... model. By starting with nonzero values for our anisotropic parameters (in this case ε=12% and δ=3%) and an initial interpretation of the dip field from...

The Effects of Lamination/Bedding on the Brittleness for the Woodford Shale Silica-Rich Intervals, From the Wyche-1 Core-Well Analysis, Pontotoc County, Oklahoma

Search and Discovery.com

Abstract: Velocity Anisotropy from Core Measurements, VSP and Sonic Logs Analysis in a Single Well Study in NE Alberta; #90224 (2015)

Judith Chan and Douglas R. Schmitt

Search and Discovery.com

... model. To quantify the degree of seismic anisotropy in the subsurface, one method is by estimating the anisotropic parameters from laboratory measurements...

Abstract: Detailed Simulation of Near-Surface Effects on Arabian AEM and AGG Data; #90319 (2018)

Carsten Scholl, Michael D. Watts

Search and Discovery.com

..., each a 6.25m cube) and were of vp, vs, Thomsen parameters, and density. From a workflow of classification, porosity calculation, and computation...

Quantitative characterization of lrati shale through laboratory measurement and rock physical modeling

Hemin Yuan, Jin Shi, Ruotong Zhao, Xiaofan Hu

International Meeting for Applied Geoscience and Energy (IMAGE)

... as the kerogen volume fraction as input, this tensor can be predicted, based on which the Thomsen anisotropic parameter ɛ can be derived...

Exact kinematic behavior of the P-SV converted wave in a vertical transversely isotropic medium

Guillaume Cambois

International Meeting for Applied Geoscience and Energy (IMAGE)

... −𝐶44 2𝐶33 < 1 (5) 2 The Thomsen parameters are: 𝜀= 𝛿= 𝐶11 −𝐶33 2𝐶33 (𝐶13 +𝐶44 )2 2𝐶33 (𝐶33 −𝐶44 ) ≥ −𝛿0 (6) − 𝛿0 ≥ −𝛿0 (7...

Abstract: Practical Applications of Seismic Anisotropy; #90187 (2014)

Philip Wild

Search and Discovery.com

... to the noisy nature of the shear-wave arrival. The output from these inversion schemes is generally in terms of Thomsen’s (1986) ε, γ, and δ parameters...