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

Francois Audebert and Volker Dirks

Search and Discovery.com

..., Vp0, ε and δ), the group angle and the group velocity. The group angle defines the direction of the normal ray, which reaches the surface at some...

Abstract: Imaging Salt Diapirs Using High-Resolution Wideangle Seismic Data, by R. A. Edwards and P. J. Barton; #90923 (1999)

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Wind River Basin, Central Wyoming

R. Randy Ray, W.R. Keefer

Rocky Mountain Association of Geologists

... (apparent dip due to velocity pull-up) terminate against north-diDDine Precambrian reflectors. The Wind River Basin sedimentarv section amears I Ray...

Function-Based Training Image Construction of Fluvial Point Bars: A Modern Analog Example from the Brazos River, Texas; #41560 (2015)

Gregory Benson, Ravi Shekhar

Search and Discovery.com

... the trends observed in the system, these majority facies codes were used as targets for optimizing a linear equation with cell indices I, J, and K...

Monitoring Sea-floor Instability Caused by the Presence of Gas Hydrate Using Ocean Acoustical and Geophysical Techniques in the Northern Gulf of Mexico

Erika Geresi, Ross Chapman, Tom McGee, Bob Woolsey

AAPG Special Volumes

... field is handled theoretically. Typically, the traveltime is known analytically by solving the eikonal (ray) equation directly or by ray tracing...

Effects of Texture and Composition on Mechanical Behavior of Experimentally Deformed Carbonate Rocks

R. H. H. Hugman, III , Melvin Friedman

AAPG Bulletin

...) content have the highest linear correlation coefficients with ultimate strength. Grain size is, therefore, the dominant intrinsic rock property...

Petrophysical and mineralogical evolution of weathered crystalline basement in western Uganda: Implications for fluid transfer and storage

B. Walter, Y. Géraud, D. Bartier, J.-M. Kluska, M. Diraison, C. Morlot, and F. Raisson

AAPG Bulletin

... plotted against porosity: bulk density, permeability, and P-wave propagation velocity (Figure 9A, B). A clear linear relationship is identified...

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

Yesser Haj Nasser

Unconventional Resources Technology Conference (URTEC)

... and the starting depth of every stimulation stage. After Haj Nasser (2022). The monitor P-wave velocity after stimulating stage 38, shown with the blue curve...

Abstract: Salt Shape Tomography; #90254 (2016)

Patrice Guillaume, Olivier Hermant, Stanislaw Warzocha

Search and Discovery.com

... contrasts on depth-migrated common image point gathers. In the multi-layer approach, the sharp velocity contrasts are introduced as layer boundaries. Using...

How to Know if That Circular Feature is a Karst Collapse or a Buried Static? An Example of Ray Tracing, High Density Velocity Analysis, and Offset Stacks in Fort Worth Basin, Texas

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Chapter 8: Evaluation of Anomalous Pressuring and Gas Saturation Using 2-D and 3-D Visualizations of Well Log Information

Zun S. Jiao, Ronald C. Surdam

Montana Geological Society

... with depth in normally compacted sections. In most cases, the normal increase of velocity with burial tends to mask velocity anomalies...

The Role of Statics Application in the Imaging of Sub-Surface in Fold Belt Areas, #40746 (2011)

Arun Kumar Arya, Bharat Chandra Joshi, Narinder Pal Singh,

Search and Discovery.com

... migration. The time-migrated section is converted into depth section using the available velocity field. The processing flowchart may be as follows: (1...

Delineation of Gas Sands by Seismic Stratigraphy in the Pericocal Area, Orinoco Heavy Oil Belt, Venezuela: Section IV. Exploration Methods

J. Licheri, N. Parra

AAPG Special Volumes

...); -- Real amplitude recovery; -- Geometry and static corrections; -- Filter tests and deconvolution; -- Velocity analysis every 30 common depth point...

A Multi-Disciplinary Approach to Evaluating Development Strategies in the Marcellus to Address Well Spacing, In-fill Timing and Operational Sequencing

Bilu Cherian, Habib Guerrero, Richard Pratt, Tracy Lombardi, Zach Swanson, Olubiyi Olaoye, Santhosh Narasimhan, Yulia Faulkner

Unconventional Resources Technology Conference (URTEC)

... equation. The Basal Marcellus (very high Gamma Ray/ GR rock interval) contains the highest porosity, less clays, more Calcite, and the best gas...

Stratigraphic and Structural Interpretations Using Diffraction Seismograms

Richard K. Snavely , A.K.M. Sarwar

GCAGS Transactions

...). The model extends from the surface to a depth of 8000 ft and includes twenty horizons. The velocity values above the first horizon are based on only one...

The Porosity Logs

John H. Doveton

Special Publications of SEPM

... to the interpolation of a zone reading between the two extremes of matrix mineral property (zero porosity) and that of water (100% porosity). The depth...

Toward Understanding Over-Pressure in a Basin with Burial and Uplift: Preliminary Results of a Study Measuring Under-Compaction with DT Logs

Paul E. Devine

Unconventional Resources Technology Conference (URTEC)

... travel time (DT) reflects normal compaction when sonic velocity (1/DT) increases with depth along a straight-line trend in a log-linear cross plot. (C...

Vertical Seismic Profiling--A Measurement that Transfers Geology to Geophysics: Chapter 2

B. A. Hardage

AAPG Special Volumes

..., the objectives of vertical seismic profiling are different from those of velocity surveying, specifically: 1. VSP data are recorded at vertically spaced depth...

Illuminating geothermal reservoir structure: DAS microseismic imaging at Utah FORGE

Yuanyuan Ma, Jonathan Ajo-Franklin, Michal Chamarczuk, Jeremy Patterson, Ismael Vera Rodriguez, David Podrasky, Thomas Coleman, Carlos Maldaner

International Meeting for Applied Geoscience and Energy (IMAGE)

... from FMI. basement. As shown in Figure 3a and b, the reflectors exhibit relatively lower shear-wave velocity and gamma ray than the surrounding rock...

PETROPHYSICS OF THE MORROW FORMATION, SOUTHEASTERN NEW MEXICO

GEORGE A. HILLIS

Fort Worth Geological Society

... and reflects an average regional dip of 1.3 degrees to the southeast. The average depth to the Morrow taken from the center of the area is 13,600 feet...

Application of Common Contour Binning (CCB) and Back Propagation Neural Network (BPNN) for Oil Water Contact Prediction in Carbonate Reservoir (The Case Study at G404 Field)

Wahyu Tri Sutrisno, Septian Prahastudhi, Ayi Syaeful Bahri, Yulia Putri Wulandari

Indonesian Petroleum Association

... porosity-density from log data. We used the Gardner equation to determine velocity from density. The resulting seismic response model indicated...

Interpolation, PSTM, AVO, and a Thin Gas Charged Viking Shoreface in West Central Alberta; #41555 (2015)

Lee Hunt, Scott Hadley, Mark Hadley, Jon Downton, Bashir Durrani

Search and Discovery.com

... reflectivity (Rs) may be estimated from the prestack seismic data by AVO Inversion such as the two-term Gidlow et al. (1992) equation R(θ) =Rp sec2θ...

Abstract: Practical Applications of Seismic Anisotropy; #90187 (2014)

Philip Wild

Search and Discovery.com

... these slowness values are inverted by solving the P-wave anisotropy velocity equation (Thomsen 1986) to yield terms for the anisotropy (Figure 4...

Ankerite in the Green River Formation's Mahogany Zone

John Ward Smith, William A. Robb

Journal of Sedimentary Research (SEPM)

... in table 5. A linear equation relating the change in 104 spacings to the two atom ratios was computed for the Mahogany Zone samples using the data in table...

Abstract: Combining Modern and Vintage Log Data to Evaluate Conventional and Unconventional Formations in the Eagle Plain of Northern Yukon; #90224 (2015)

Innocent Asoh Kalu and Don Stachiw

Search and Discovery.com

...) in a few wells to the most basic types of logs (gamma ray, deep induction and compressional slowness) in majority of the wells. By using the basic logs...