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The AAPG/Datapages Combined Publications Database

Showing 7,126 Results. Searched 200,357 documents.

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Semi-global multiparameter FWI using public cloud HPC

Henry A. Debens, David Knodel, Fabio Mancini, Darryl Harris, Mike Warner, Adrian Umpleby

International Meeting for Applied Geoscience and Energy (IMAGE)

... information. From here on we consider only the inversion of velocity and vertical transverse isotropy parameters. Several new aspects of semi-global...

2022

Bridging the gap: Deep learning on seismic field data with synthetic training for building Gulf of Mexico velocity models

Stuart Farris, Robert Clapp

International Meeting for Applied Geoscience and Energy (IMAGE)

... that adversely affects illumination. Seismic data acquired over the Tiber field, along with a legacy multiclient TTI (Tilted Transverse Isotropy) velocity...

2023

Fracture Characterization of the Montney Formation Using Amplitude Inversion of Converted Wave Seismic

Tyler L. MacFarlane, Thomas Davis

Unconventional Resources Technology Conference (URTEC)

... facture set, and relatively weak vertical transverse isotropy (VTI). For application of this methodology in other fields, anisotropic reflection...

2015

Q tomography workflow: Land case study in the Eagle Ford Play

Itai Sharabi, Matan Shustak, Orly Kletenik-Edelman, Ronit Levy, Zvi Koren

International Meeting for Applied Geoscience and Energy (IMAGE)

... building workflow 1. Velocity Model Building The velocity input in this study is obtained by transverse isotropy with a vertical axis of symmetry...

2023

Azimuthal Velocity Analysis of 3-D Pre-Stack Seismic Data for Fracture-Induced Anisotropy in the Altamont-Bluebell Field

Khaled Al Dulaijan, Gary Margrave

Unconventional Resources Technology Conference (URTEC)

.... A method for VVAZ inversion, based on the elliptical NMO equation for Transverse Isotropy (TI) media that was derived by Grechka and Tsvankin (1998...

2016

A depth uncertainty estimation method using interval-domain anisotropic VTI velocity and travel time detectability criterion

Andrey H. Shabelansky, Cory J. Hoelting, Min Yang, Sizhuang Deng, Jinsong Chen

International Meeting for Applied Geoscience and Energy (IMAGE)

... transverse isotropy (VTI) medium that is based on normal moveout (NMO) travel-time calculations and a detectability criterion. We provide the mathematical...

2024

Nonparametric Bayesian approach for robust depth uncertainty estimation from seismic velocity and anisotropy tradeoffs

Jinsong Chen, Sizhuang Deng, Min Yang, Andrey Shabelansky, Cory Hoelting, Huafeng Liu, Maisha Amaru

International Meeting for Applied Geoscience and Energy (IMAGE)

... parameters in a vertical transverse isotropy (VTI) medium. They used normal moveout (NMO) traveltime and detectability criteria to guide model...

2024

Microseismic Quality Control Using Synthetic Seismograms

M. C. Smith, S. D. Goodfellow, J. Huang, S. C. Maxwell, J. Teff, B. Kennedy, B. Bayliss

Unconventional Resources Technology Conference (URTEC)

... of a Vertical Transverse Isotropy (VTI) velocity calibration, is that the anisotropy in the horizontal direction will be captured as the log deviates through...

2016

Hybrid Velocity Model Building: 3D Ocean Bottom Cable (OBC) Orthorhombic Full Waveform Inversion (FWI) Depth Imaging of a Complex Geological Structure, Western Berau - Papua, Indonesia

Purbo Santoso, Yayat Supriatna, Tepy Septyana, Leo Tjahjadi, Yonghe Guo

Indonesian Petroleum Association

... the predicted and the observed data is larger than a half-cycle of the dominant frequency. The initial model used the vertical transverse isotropy (VTI...

2019

Minimum Horizontal Stress Sharpening; A Novel Workflow Honoring the High-Resolution Heterogeneity Seen in Unconventional Reservoirs

Edgar Velez, Elia Haddad, Andy Wray

Unconventional Resources Technology Conference (URTEC)

..., shales exhibit transverse isotropy with a vertical axis of symmetry (TIV), and this is reflected in different physical properties of this rocks...

2022

ABSTRACT: Seismic-Based Geomechaical Modeling Provides Attributes for Directional Well Planning; #90013 (2003)

EVGENII KOZLOV, IGOR GARAGASH, ALLEN LOWRIE

Search and Discovery.com

... 11-14, 2003 Fig. 3. Interval P-wave velocity for the interval between seismic horizons B and T2 calculated assuming horizontal transverse isotropy (HTI...

2003

Multi-Component Seismic (3C) Data Acquisition … A Case Study from Oil India Ltd. Operational Area in Upper Assam Basin, #40728 (2011)

K. L. Mandal, A. K. Khanna, Dr. R. Dasgupta

Search and Discovery.com

.... With the vertically layered strata, vertical transverse isotropy or variations of seismic velocity with angle from the vertical is expected. Synthetic Seismogram...

2011

Unconventional Reservoir Shale Gas; #10459 (2012)

Sunjay Sunjay

Search and Discovery.com

... (horizontal transverse isotropy). This means that the fracture system is comprised of vertical fractures which cause anisotropic effects on seismic...

2012

Comparing Seismic Resolution and Signal and Noise Quality between Dense Point-Receiver and Conventional Data, Bakken Formation, North Dakota; #41160 (2013)

Niranjan Banik, Antoun Salama, Adam Koesoemadinata, George El-Kaseeh, Mark Egan, and Alfonso Gonzalez

Search and Discovery.com

... vertical transverse isotropy (VTI) anisotropy, especially in the overburden of the Bakken Formation, we also used an anisotropic migration on both data sets...

2013

Encased Secondary Minibasins: an Emerging Play in the Deepwater Gulf of Mexico; #30359 (2014)

Ursula Edwards, Vernon Moore, Ugojoh Odumah

Search and Discovery.com

... Tilted Transverse Isotropy (TTI), and Surface Related Multiple Elimination (3D SRME) Pliocene With the knowledge of their presence and widespread...

2014

Determining Brittleness from Seismic Data; #41725 (2015)

Satinder Chopra, Ritesh Kumar Sharma

Search and Discovery.com

... in the stiffness tensor could be determined and allow accounting for transverse isotropy in the shale. It was found that the static and dynamic Young...

2015

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)

... also be described by transverse isotropy with a vertical axis of symmetry (hereafter referred as VTI or TI throughout the paper). There are many...

2021

Efficient Completions in Anisotropic Shale Gas Formations

Saied Mighani, Carl Sondergeld, Chandra Rai

Unconventional Resources Technology Conference (URTEC)

... core ensures the Transverse Isotropy (TI) as an appropriate assumption for both rock types. Revisiting the uniaxial compression results presented...

2014

Formation Anisotropy and Heterogeneity Evaluation with a High-Resolution LWD Ultrasonic Slowness Imaging Tool

Naoki Sakiyama, Hiroshi Hori, Hiroaki Yamamoto, Hiroshi Nakajima, Matthew Blyth, Syed Muhammad Fahim Ud Din, Mark Kittridge

Unconventional Resources Technology Conference (URTEC)

... the intrinsic transverse isotropy is expected, the vertical and the horizontal shear slowness with the ultrasonic pitch-catch measurements are different. Thus...

2020

Towards Quantitative Assessment of 4D DAS Time Shifts for Enhanced Stimulated Rock Volume Characterization

Yesser Haj Nasser

Unconventional Resources Technology Conference (URTEC)

... rocks (Schoenberg and Helbig 1997; Sayers and Kachanov 1995; Sayers 1994a,b), we use a vertical transverse isotropy (VTI) model to predict the P-wave...

2022

A Geomechanics and Pore Pressure Informed Stage Level Optimization Case Study for Unconventional, Infill Development in the Powder River Basin

Joel Mazza, Justin Kegel, Steve Van Delinder, Tom Hewett, Beth Emborsky, Scott Patrick

Unconventional Resources Technology Conference (URTEC)

...). The outputs for the rock property curves are isotropic Young’s modulus (Mpsi) and Poisson’s ratio, vertical transverse isotropy indicator (VTI anisotropy...

2023

Origin of Transverse Faulting, Rocky Mountain Front Ranges, Canmore, Alberta

Ian W. Moffat,, John H. Spang

CSPG Bulletin

...Origin of Transverse Faulting, Rocky Mountain Front Ranges, Canmore, Alberta Ian W. Moffat,, John H. Spang 1984 147 161 Vol. 32 (1984) No. 2. (June...

1984

Fabric Pattern in a Basal Till Succession and its Significance for Reconstructing Subglacial Processes

Nicolaj K. Larsen, Jan A. Piotrowski

Journal of Sedimentary Research (SEPM)

...). Rusnak (1957) demonstrated that particles rotating in a fluid constitute least resistance when the particle is aligned parallel (0°) or transverse (90...

2003

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