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The AAPG/Datapages Combined Publications Database
Showing 20,604 Results. Searched 200,357 documents.
Determination of Organic Content of Appalachian Devonian Shales from Formation-Density Logs: GEOLOGIC NOTES
James W. Schmoker
AAPG Bulletin
... are proportional to changes in organic content, and the gamma-ray log provides an independent indication of the amount of organic matter present. A linear relation...
1979
Subsurface seismic imaging using drill bit noise
Mehdi Asgharzadeh, Ashley Grant, Andrej Bona, Milovan Urosevic
Petroleum Exploration Society of Australia (PESA)
... events dipping in the opposite directions at either side of the well. In Figure 4 (b), ground rolls can be identified as linear events with velocity...
2019
Mantle Creep: Elasticoviscous Versus Modified Lomnitz Law, and Problems of "The New Global Tectonics"
Paul S. Wesson
AAPG Bulletin
... of seismic velocity with depth (z) must obey EQUATION (41) For a low-velocity layer, by definition, (dv/dz) < 0, which by equation 41 gives...
1972
New perturbation-based traveltime approximation for elastic VTI media
Shibo Xu, Alexey Stovas, Xingguo Huang
International Meeting for Applied Geoscience and Energy (IMAGE)
... axis (VTI). The perturbation coefficients in this approximation are derived directly from the implicit parametric offset-traveltime equation...
2022
Basin-Scale Rock Physics Study and Stochastic AVO Modelling for the Deep Water Kutei Basin (East Kalimantan ย Indonesia)
Gabriela Carrasquero, Alessandro Amato del Monte, Fabio Luoni, Paolo Battini, Gilbert Del Molino, Fabri Ikhlas Gumulya, Dedy Sulistiyo Purnomo, Nasif Khifni
Indonesian Petroleum Association
...). The statistical relationship used to establish the variation of velocity and density with depth was linear, given that it represents a simple yet...
2014
DMO and NMO as Applied in Seismic Data Processing
Jiunnyih Chen
Geological Society of Malaysia (GSM)
... corresponding to the ray from source to reflector and to receiver is a function of tm (migrated time scale that corresponds to depth). But when doing NMO...
1989
Abstract: Azimuthal Processing For Unconventional Resource Plays Using An Orthorhombic Velocity Model; #90174 (2014)
Shaowu Wang and David Wilkinson
Search and Discovery.com
...Abstract: Azimuthal Processing For Unconventional Resource Plays Using An Orthorhombic Velocity Model; #90174 (2014) Shaowu Wang and David Wilkinson...
2014
Abstracts: True-Amplitude PS Prestack Time Migration via 5D Interpolation; #90173 (2015)
Peter W. Cary, Albert Zhang
Search and Discovery.com
... the velocity variations are more substantial, prestack depth migration would be more desirable ( Kristiansen et al., 2003, Miao et al., 2005). S-waves...
2015
Statistical Methods For Log Analysis of Reservoir Properties: Chapter 1
John H. Doveton
AAPG Special Volumes
... times on Figure 9. The regression equation is: [EQUATION] and has a coefficient of determination of 0.76, meaning that the linear prediction...
1994
The Application of 2D Common-Offset Common-Reflection-Surface (CO CRS) Stack Method Towards Synthetic Data
Parapaty Halley, Rachmat Sule, Teuku Abdullah Sanny
Indonesian Petroleum Association
... ray (Figure 2), computed at the respective emergence points. This equation (1) is called the CO CRS stacking operator. The wavefront curvatures (K1...
2009
Estimation of Total Organic Carbon (TOC) Content of Shale from AVO Inversion: A New Crossplot Approach Based on Zoeppritz Equations
Un Young Lim, Richard Gibson Jr., Nurul Kabir
Unconventional Resources Technology Conference (URTEC)
... based on AI and SI cannot provide the same measures. In contrast to most conventional AVO inversions based on linear approximations of Zoeppritz...
2019
Abstract: Reservoir Characteristics of a Quaternary Channel: Incorporating Rock Physics in Seismic and DC Resistivity Surveys; #90211 (2015)
Jawwad Ahmad and Douglas Schmitt
Search and Discovery.com
... scenarios were calculated using Gassmannโs equation. Velocity โ porosity and clay content trends were used to link sedimentological and rock physics...
2015
Abstract: Automatic High-Density Constrained Velocity Picking; #90211 (2015)
Emil Blias
Search and Discovery.com
.... A velocity model, beyond its initial purpose to obtain a seismic stack, is used for time and depth imaging, AVO analysis and inversion, pore pressure...
2015
Combining high resolution modelling and one-way wave field extrapolation migration to image beneath a complex overburden: A case study from Porcupine Basin, Ireland
Partha Pratim Mandal, Weidi Koh, Julien Bluteau, David Laws, Jennifer Greenhalgh
Petroleum Exploration Society of Australia (PESA)
... The success of any depth velocity model building (VMB) process depends upon the quality of the input dataset. TECH TALK Figure 1: Map showing location...
2016
Acoustic Velocity Modeling of Unconventional Reservoirs
Alessandra Simone, Lori Hathon, Michael Myers
Unconventional Resources Technology Conference (URTEC)
...Acoustic Velocity Modeling of Unconventional Reservoirs Alessandra Simone, Lori Hathon, Michael Myers URTeC: 2667 Acoustic Velocity Modeling...
2020
Abstract: Post-stack Inversion of the Hussar Low Frequency Seismic Data; #90187 (2014)
Patricia E. Gavotti, Don C. Lawton, Gary F. Margrave, and J. Helen Isaac
Search and Discovery.com
... in impedance between two interfaces (equation 2) where the impedance (Z) is simply the product between velocity and density: , (2) Band-limited impedance...
2014
Simultaneous Joint Inversion of Seismic and Gravity Data for Long Offset Pre-Stack Depth Migration in Northern Oman, #41569 (2015).
D. Colombo, M. Mantovani, M. De Stefano, D. Garrad, Hussain Al Lawati
Search and Discovery.com
... of Bouguer anomaly) for improving velocity model building and the corresponding depth-domain seismic image. Introduction Effective depth imaging through...
2015
Exploration of Deepwater Regions Offshore India
Roberto Fainstein, Rajesh Kalra
International Meeting for Applied Geoscience and Energy (IMAGE)
... a travel time table to move the sample. The ray path can be non-symmetric even for a flat reflector (3D velocity model) Anisotropic prestack depth...
2021
Determination of Potential Yield and Volatile Hydrocarbons from Well Logs in Potential Source Rocks
J. L. Lin, H. A. Salisch
Southeast Asia Petroleum Exploration Society (SEAPEX)
... Sonic Log Table 4 compares the results from the linear equation [L] with those from the quadratic equation [Q]. The equations that are used in Table 4...
1994
Abstract: Workflows for Sweet Spots Identification in Shale Plays Using Seismic Inversion and Well Logs; #90187 (2014)
Yexin Liu
Search and Discovery.com
... and geological core analysis can easily help to calculate these important elements around the borehole. For example, the Passey equation (Passey, 1990) can...
2014
In Situ Evaluation of Potential Source Rocks by Wireline Logs: Chapter 13: GEOCHEMICAL METHODS AND EXPLORATION
Susan L. Herron
AAPG Special Volumes
... the log-linear relationship between vitrinite reflectance and depth and consequently to pick a representative vitrinite reflectance value for a given zone...
1991
Analysis of Sonic Well Logs Applied to Erosion Estimates in the Bighorn Basin, Wyoming
Henry P. Heasler , Natalya A. Kharitonova
AAPG Bulletin
... the Wyllie equation (Wyllie et al., 1956, 1958) or other linear equations (Issler, 1992), sonic transit time has been used to define compaction trends...
1996
Brittleness and Geomechanical Properties Estimation Using Wireline and Seismic Data in the Duvernay Shale Basin, Canada
Carmen C. Dumitrescu
Unconventional Resources Technology Conference (URTEC)
... (equation 2). The linear relation between stress and strain is known as Hookeโs law. ๐ธ= ๐๐ง ๐๐ง = โ๐น/๐ด โ๐ฟ/๐ฟ (2) In equation 2, ฮF...
2021
Stratigraphic Velocity Interpretation: National Petroleum Reserve--Alaska: Chapter 12
E. W. Peikert
AAPG Special Volumes
... velocity data. Well data are used to determine interval velocity versus depth curves which reflect the normal compaction trends for various lithologies...
1985
High Resolution Seismic Data Derived From Prestack Inversion and Machine Learning to Accurately Position Horizontal Wells in the Midland Basin, Texas
Robert Meek, Buzz Davis, Hector Bello
Unconventional Resources Technology Conference (URTEC)
... and pilot wells are used to determine an accurate depth and facies model of the subsurface. Carbonate debris flows need to be accurately mapped...
2017