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The AAPG/Datapages Combined Publications Database

Showing 438 Results. Searched 190,067 documents.

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Abstract: Estimation of seismic anisotropy parameters in the presence of lateral heterogeneity using WAVSP; #90254 (2016)

Ali A. Shaiban, Carlos Planchart

Search and Discovery.com

... Thompsen Thomsen anisotropic parameters. This approach obtains the estimates of phase slowness from a receiver array situated in the target zone...

2016

Seismic Anisotropy Modeling from Well Log in Talang Akar Formation, South Sumatra, Indonesia; #41360 (2014)

Thariq Guntoro, Intan Andriani Putri1, and Dwa Desa Warnana

Search and Discovery.com

..., but these are awkward to handle (Veeken, 2006). Thomsen (1986) showed a transversely isotropic term could be added to the equations using his weak anisotropic parameters...

2014

Sonic Log Analysis from Isotropic and Anisotropic Media In Carbonate Reservoir, the Case Study at Stella Alpina Field

Wahyu Tri Sutrisno, Septian Prahastudhi, Ari Teguh Sugiarto, Ayi Syaeful Bahri, Dwa Desa Warnana, Yulia Putri Wulandari

Indonesian Petroleum Association

... from each model. Finally, we derived the anisotropic effect in the sonic log.   Thomsen Parameters If we have the compliance correction matrix , then we...

2014

Abstract: Impact of Seismic Anisotropy on Predicted Reservoir Properties; #90254 (2016)

Duryodhan Epili, Husam AlMustafa, Asaad E. Alzawwad, Mohammad Bannagi, Mark Taylor

Search and Discovery.com

... of incorporating Thomsen’s anisotropic parameters into the data preparation for AVA inversion. The benefit is particularly apparent for the seismic inversion...

2016

Effects of Overburden Anisotropy and Vertically Aligned Fractures on P-Wave Azimuthal AVO Responses

Fatkhan, Yudi Yanto, Nofri Faruza Said

Indonesian Petroleum Association

... of shale on AVO responses only varies with incidence angles. The anisotropy of shales was modeled with two different signs of Thomsen’s anisotropic...

2005

Anisotropy

Search and Discovery.com

N/A

Abstract: Workflows for Sweet Spots Identification in Shale Plays Using Seismic Inversion and Well Logs; #90187 (2014)

Yexin Liu

Search and Discovery.com

...) are isotropic contributions (Hampson and Russell, 2005) and other three parts ( ) are the contributions of the three Thomsen anisotropic parameters...

2014

Abstract: Constraining Anisotropy … Lessons from 2D Modeling; #90211 (2015)

Rob Holt

Search and Discovery.com

... information it is possible to derive about the Thomsen weak anisotropy parameters epsilon and delta from 2D anisotropic modeling. Modeling...

2015

How Reliable Is The Negative Anisotropy In Carbonate Rocks? - Offshore East Java Basin Case Study

Jun Wang, Yonghe Guo, Pongga Wardaya, M Afiq B Mokhtar, Riaz Alai, Rizki Krishna Pratama, Haryono Haryanto

Indonesian Petroleum Association

... used seismic anisotropic properties are defined by Thomsen’s (1986) weak anisotropy formulation, which was designed for media having transversely...

2018

Abstract: TTI Anisotropic Depth Migration: Which Tilt Estimate Should We Use?; #90211 (2015)

Francois Audebert and Volker Dirks

Search and Discovery.com

... on an image obtained by isotropic or VTI elliptic migration with an educated estimate of the Thomsen parameter delta. Introduction Anisotropic velocity...

2015

Abstract: Azimuthal Simultaneous Elastic Inversion; #90172 (2014)

Jon Downton, Benjamin Roure

Search and Discovery.com

... Shuey AVO equation with two extra parameters, the anisotropic gradient and the symmetry plane. For fractured media, the anisotropic gradient is often...

2014

Abstract: AVAZ and VVAZ Practical Analysis to Estimate Anisotropic Properties; #90224 (2015)

Yexin Liu

Search and Discovery.com

...𝑣 = 𝛿, 𝜀 𝑎𝑛𝑑 𝛾 are the Thomsen’s anisotropic parameters. 4𝑉 𝑠2 𝑉2 𝑝 𝑠𝑖𝑛2 𝜃 . The three parameters For the HTI media, the seismic...

2015

Incorporation of Geology, Wells, and Rock Physics into Anisotropy Estimation for Seismic Depth Imaging Enables True Earth ModelŽ, #40828 (2011)

Huyen Bui, Peck-Hwa David Ng, Jenny Zhou, Chih-Wen Kue, Mart Smith

Search and Discovery.com

... and update the anisotropic parameters. Firstly, we perform 1D ray tracing to estimate Thomsen’s δ to flatten the model gather at near and middle...

2011

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...

2015

Abstract: AVO Depth Modelling (Paper 2)

Leong Lap Sau, Ng Tong San

Geological Society of Malaysia (GSM)

... case are found in Aki and Richards, pg. 153 and in Smith and Gidlow, pg 994. For weakly anisotropic reflections, Thomsen's equation 10 provides a very...

1996

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...

2010

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...

2016

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...

2014

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...

2021

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...

2017

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...

2018

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