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The AAPG/Datapages Combined Publications Database

Showing 6,613 Results. Searched 188,963 documents.

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Abstract: 3D, Anisotropic Phase Shift Operators; #90171 (2013)

Robert J. Ferguson and Gary F. Margrave

Search and Discovery.com

... in vertical transverse-isotropy, dipping transverse-isotropy. Introduction Computationally, modelling and imaging conducted in local slowness coordinates...

2013

ABSTRACT: Estimation of Anisotropy Parameters Using Intrinsic Rock Properties in a Selected Swamp Field in Niger Delta; #90115 (2010)

Iheanyichukwu P. Okorie, Francesca Osaynade, Understanding Aikulola, Noble Tamunobereton-ari, Robinson S. Dike, Samuel Olotu, and Joseph O. Ebeniro

Search and Discovery.com

.... In most sedimentary basins, like the Niger Delta, comprising of about 70% shales, the type of anisotropy often observed is the vertical transverse isotropy...

2010

Abstract: 3D, Anisotropic Phase Shift Operators; #90171 (2013)

Robert J. Ferguson and Gary F. Margrave

Search and Discovery.com

... in vertical transverse-isotropy, dipping transverse-isotropy. Introduction Computationally, modelling and imaging conducted in local slowness coordinates...

2013

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

... and the corresponding checkshot-calibrated velocity models. We restricted ourselves to vertical transverse isotropy (VTI), the simplest and most common form...

2016

Abstract: The Prediction of Orthorhombic Differential Horizontal Stress Ratio for Shale Reservoir; #90308 (2017)

Ni Ma, Xingyao Yin, Zhaoyun Zong, Chengyu Sun

Search and Discovery.com

... is vertical transverse isotropy (VTI) or some lower symmetry. Incorporating the generalized form of Hook's law, we derived the equation of principal stresses...

2017

Regional Fine-Scale Sequence Stratigraphy of the Woodford Shale and Its Impact on Microseismic Activity and Optimizing Future Hydraulic Fractures, #51241 (2016).

Jing Zhang, Jennifer Scott, Roger Slatt, Bryan Turner

Search and Discovery.com

... in unconventional reservoirs that are affected by high potential VTI and HTI (vertical and horizontal transverse isotropy). Correlation between microseismic...

2016

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

Yexin Liu

Search and Discovery.com

... 2013, Calgary, AB, Canada shale is vertical transverse isotropy (VTI) because the layered shale is typically horizontal with vertical symmetry. Another...

2014

Fabric Shape and the Interpretation of Sedimentary Fabric Data

Douglas I. Benn

Journal of Sedimentary Research (SEPM)

... these diagrams: fabric isotropy (I = S3/S1)and fabric elongation (E = 1-(S2/S1)). Together, these indices uniquely define the shape of any orthorhombic fabric...

1994

Anisotropy Analysis in Shale Using Advanced Sonic Data - Bakken Case Study, #41049 (2012)

Mehdi Ostadhassan, Zhengwen Zeng, Hadi Jabbari

Search and Discovery.com

... medium known as Vertically Transverse Isotropy (VTI) (Sayers, 1994; Vernik and Liu, 1997). This has made transverse isotropy the most common anisotropy...

2012

Abstract: Shear Wave Splitting Parameter Estimation Using a Regular Distribution of Azimuths; #90187 (2014)

A. Stanton and M. D. Sacchi

Search and Discovery.com

... parameters. Introduction In the presence of Horizontal Transverse Isotropy (HTI) converted waves are split into fast and slow waves which...

2014

A Semi-Analytical Modeling Approach for Hydraulic Fracture Initiation and Orientation in Shale Reservoirs

Andreas Michael, Ipsita Gupta

Unconventional Resources Technology Conference (URTEC)

... Hmax =S h m in (isotropy) Transverse fracture initiation Longitudinal fracture initiation 0.5 T = 0 @ 0.6 psi/ft = T L @ 0.6 psi/ft 0 0...

2020

AAPG Archie Series, No. 1, Chapter 6: Petrophysical Properties of Thinly Bedded Formations

Q. R. Passey, K. E. Dahlberg, K. B. Sullivan, H. Yin, R. A. Brackett, Y. H. Xiao, and A. G. Guzmán-Garcia

AAPG Special Volumes

...      Non-planar beds      Induction logs and the effect of dip           Transverse isotropy and the conductivity tensor      Archie exponents...

2006

Visualizing lateral anisotropy in modern carbonates

Sam J. Purkis, Brigitte Vlaswinkel

AAPG Bulletin

... between isotropy and anisotropy is a defining statistic in the configuration of both real and modeled carbonate landscapes. Even a cursory look...

2012

ABSTRACT: The Ongoing Journey of Incorporating Reservoir Properties from Seismic at Agbami Field, OML 127 & 128, Deepwater Nigeria; #90115 (2010)

Lydia Novakovic, Joy Roth, and Adeniyi A. Oshinubi

Search and Discovery.com

... fold strike-oriented survey was acquired in 2004 to improve the quality of the data. In 2006, pre-stack depth migration using tilted transverse...

2010

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

... Transverse Isotropy (TI) defined by a single symmetry axis with a vertical (VTI), horizontal (HTI), or tilted (TTI) orientation. For practical purposes...

2010

ABSTRACT: Agbami 5A Geocelluar Model: After First Oil. Getting the Right Level of Detail for an Active Development Program; #90115 (2010)

Joy Roth, Lydia Novakovic, Adeniyi A. Oshinubi, Thomas Zalan, Martin Hanschitz, and Bruce Gallemore

Search and Discovery.com

... tilted transverse isotropy was used on seismic acquired in 2004. This data better imaged the main thrust fault, providing more confidence in its location...

2010

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

Yexin Liu

Search and Discovery.com

... transverse isotropy (VTI) because the layered shale is typically horizontal with vertical symmetry. Usually VTI can be estimated via higher-order NMO...

2015

Abstract: Shear Wave Splitting Analysis of Borehole Microseismic Reveals Weak Azimuthal Anisotropy Hidden Behind Strong VTI Fabric of the Lower Paleozoic Shales in Northern Poland; #90310 (2017)

Wojciech Gajek, James V. Verdon, Michal Malinowski, Jacek Trojanowski

Search and Discovery.com

... shale plays in northern Poland are characterized by a strong (15-18%) Vertical Transverse Isotropy (VTI) fabric which dominates weak azimuthal anisotropy...

2017

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