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The AAPG/Datapages Combined Publications Database

Showing 19,681 Results. Searched 195,354 documents.

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Shell Content in Quartzose Beach and Dune Sands, Dee Why, New South Wales

G. S. Gibbons

Journal of Sedimentary Research (SEPM)

... and sub-spherical; some have a very strong network of opaque acicular crystal inclusions and the surface of a fair proportion is iron-stained. Most grains...

1967

Gas Hydrates: Part III: Rock Physics Hydrate Experiments

Lasse Amundsen, Martin Landrø

GEO ExPro Magazine

...-wave sonic and resistivity logs. Column 1: Comparison of P-wave velocity (red line) with model results assuming methane hydrate (solid black lines...

2012

Abstract: Modelling Near-field Effects in VSP-based Q-estimation Part 2: Modelling Results; #90171 (2013)

Arnim B. Haase and Robert R. Stewart

Search and Discovery.com

... and Robert R. Stewart University of Houston Summary The complete spherical wavefield emanating from a P-wave point source surrounded by a homogeneous isotropic...

2013

Anisotropic elastic full-waveform inversion for crosswell seismic data for Wyoming CarbonSAFE project

Olga Podgornova, Shujaat Ali, Ting Lei, Peng Li, Matthew Johnson, Lu Lee, Zunsheng Jiao, J. Fred McLaughlin, Erik Borchardt, Lin Liang, Pierre Bettinelli, Joel Le Calvez

International Meeting for Applied Geoscience and Energy (IMAGE)

...://doi.org/10.2172/1557442. Zhou, C., G. T. Schuster, S. Hassanzadeh, and J. M. Harris, 1997, Elastic wave equation traveltime and waveform inversion...

2023

Abstracts: Determining Microseismic Event Locations by Semblance-weighted Stacking; #90173 (2015)

David W. Eaton, Jubran Akram, Andy St-Onge, and Farshid Forouhideh

Search and Discovery.com

.... For all depth-distance pairs in the lookup table, semblance-weighted waveform stacks are calculated within P- and S-wave corridors. The location...

2015

I. Relation of Structural Section to Seismic Section

Robert E. Sheriff

AAPG Special Volumes

... compared to the amplitude of the incident wave is given by the change in the product of the densi y and velocity, as shown: [EQUATION] Where...

1981

Common Reflection Surface (CRS) Stack: Limitations and Opportunities for High-Resolution Seismic Imaging; Real Data Cases

M. S. Jaya, E. A. Sentani, Yendri, Widjonarko, D. Santoso

Indonesian Petroleum Association

... and Normal wave radius. The attributes are derived from the CRS stacking equation. Due to its full coverage data use, the CRS stack section results...

2007

Implementation of the DIPSCAN Method to Estimate Boundary Dips in Complicated Structures by VSP Data

A. A. Tabakov, V.N.Ferentsi, H. Gravini

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... ϕ    T ( . ) - vector-column of the appropriate coordinates in 3D space. The equation of well trajectory in the new coordinate system becomes {x...

2006

Kapteyn's Transformation of Grain Size Distribution

Jiri Brezina

Journal of Sedimentary Research (SEPM)

...., 1957, Wave-generated ripples in nearshore sands: Beach Erosion Board, Corps of Engineers, Tech. Memo. no. 100, 42+23 p. KAPTEYN, J. C., 1903, Skew...

1963

Assessing and processing three-dimensional photogrammetry, sedimentology, and geophysical data to build high-fidelity reservoir models based on carbonate outcrop analogues

Ahmad Ramdani, Pankaj Khanna, Gaurav Siddharth Gairola, Sherif Hanafy, and Volker Vahrenkamp

AAPG Bulletin

... in Wadi Birk (coordinates: 46.64420 latitude; 23.28124 longitude), Saudi Arabia (Figure 1B). These laterally heterogeneous facies have high porosity (∼30...

2022

PINNslope: Physics-informed neural network slope prediction and interpolation with positional encoding

Francesco Brandolin, Matteo Ravasi, Tariq Alkhalifah

International Meeting for Applied Geoscience and Energy (IMAGE)

... slope attribute. The implementation comprises two fully-connected neural networks trained using the local plane wave differential equation as well...

2023

Mantle Creep: Elasticoviscous Versus Modified Lomnitz Law, and Problems of "The New Global Tectonics"

Paul S. Wesson

AAPG Bulletin

.... Ahrens, T. J., and C. F. Peterson, 1969, Shock wave data and the study of the earth, in The application of modern physics to the earth and planetary...

1972

Application of Extended Elastic Impedance Method and Seismic Stochastic Inversion to Mapping the Distribution of Sandstones and Gas-Sand in LAPANGŽ Field, West Natuna Basin, Indonesia

Gilvano Matthew, Ignatius Sonny Winardhi

Indonesian Petroleum Association

... the well data. EEI is derived by substitution in the linearized Zoeppritz equation: R = A + B tan X (1) Then, R cos X = (A + B tan X) cos X (2...

2014

Abstract: AVAZ Inversion for Fracture Orientation and Intensity: a Physical Modeling Study; #90187 (2014)

Faranak Mahmoudian and Gary F. Margrave

Search and Discovery.com

... variation with the angle and azimuth (AVAZ) method. Jenner (2002) reformulated the Rüger (2001) equation for P-wave reflection coefficient from a boundary...

2014

Gypsum-Oolite Dunes, Great Salt Lake Desert, Utah

Daniel J. Jones

AAPG Bulletin

... and cleavage fragments of gypsum, also small pancake-shaped crystals, well rounded 25%--Oolites, both sub-spherical and sub-cylindrical fecal pellet...

1953

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