Multifocusing Stack Technique for Subsurface Imaging, #40749 (2011)

Sunjay Sunjay,

Search and Discovery.com

...- involved in equation (1) are curvature radii of the fictitious wave fronts ΣS and ΣG. It is clear from Figure 3 that, for a given central ray, the radii R...

A Quantitative X-Ray Diffraction Technique Applied to Fine-Grained Sediments of the Deep Gulf of Mexico

S. B. Devine , R. E. Ferrell, Jr., G. K. Billings

Journal of Sedimentary Research (SEPM)

... PERCENTAGE CALCULATIONS FROM X-RAY DIFFRACTION PEAK INTENSITIES Peak intensities were converted to mineral weight percentages by adapting the equation...

Abstract: Improved Characterizationof the Compartmentalized and Overpressured Vicksburg Sandstone Reservoirs Using Integrated Sequence Stratigraphy, Diagenesis, and Petrophysics

Zuhair Al-Shaieb

Houston Geological Society Bulletin

... improved formation evaluation techniques for this type of reservoir. Cores were sampled for thin-section, X-ray, SEM, φ-k, capillary pressure...

ABSTRACT: Confirming Depth Models using Differential Wide Aperture Seismic; #90061 (2006)

James H. Leven

Search and Discovery.com

... to produce a seismic depth section. (2) Interpreting key horizons, and determining interval wavespeeds from the Dix equation. (3) Constructing...

Three-Dimensional Trend Mapping Using Gamma-Ray Well Logs: Simpson Group, South-Central Kansas

J. H. Doveton , Zhu Ke-an , J. C. Davis

AAPG Bulletin

... subdivisions that correspond to the 2 extremes allowed by the cubic equation. This mathematical conclusion matches the visual evidence of the gamma-ray log...

TTI Wave Equation Migration by Phase-Shift Plus Interpolation

Richard A. Bale

Search and Discovery.com

... greater effort are expected from the use of wave-equation migration methods on TTI data. In contrast to ray-tracing based methods, wave-equation migration...

TTI Wave Equation Migration by Phase-Shift Plus Interpolation

Richard A. Bale

Search and Discovery.com

... greater effort are expected from the use of wave-equation migration methods on TTI data. In contrast to ray-tracing based methods, wave-equation migration...

Seismic Modeling and Imaging - Making Waves, by Phillip Bording and Larry Lines, #40066

Search and Discovery.com

Utilizing the Two-Way Wave Equation: Reverse Time Pre-Stack Depth Migration

Matthew H. Karazincir, Clive M. Gerrard, Andrew Long, Lynn B. Comeaux

Indonesian Petroleum Association

...Utilizing the Two-Way Wave Equation: Reverse Time Pre-Stack Depth Migration Matthew H. Karazincir, Clive M. Gerrard, Andrew Long, Lynn B. Comeaux...

Pore-scale electrical numerical simulation and new saturation model of fractured tight sandstone

Qian Wang, Maojin Tan, Chengwen Xiao, Siyu Wang, Chuang Han, and Lingtan Zhang

AAPG Bulletin

... log interpretation. These challenges lead to the inaccurate calculation results of formation water saturation (Sw) by using Archie’s equation...

Image - Rays and the Treatment of Inhomogeneity in Migration

L. Hatton

Southeast Asia Petroleum Exploration Society (SEAPEX)

... in the treatment of inhomogeneity in wave-equation migration processes. A further object is to present some heuristic rules, using image-ray tracing, to enable...

Lithology Logging and Mapping Techniques: Chapter VII

George B. Asquith, Charles R. Gibson

AAPG Special Volumes

... ray cutoff (see log; and Fig. 38). Remember: [EQUATION] Where: GRlog = gamma ray log GRmax = gamma ray maximum (shale) GRmin = gamma ray minimum...

Abstracts: Application of CSP Gather Modeling for Determination of Velocity Smoothing Operator for Prestack Kirchhoff Depth Migration; #90173 (2015)

Hassan Khaniani and John C. Bancroft

Search and Discovery.com

... in ray based methods is that the foundation of ray tracing techniques is based on the high frequency assumption of wave equation. Therefore, to be able...

A Physical Model of Cementation and Its Effects on Single-Phase Permeability

Manmath N. Panda, Larry W. Lake

AAPG Bulletin

... are necessary because the Carman-Kozeny (CK) equation is based on specific surface area and porosity which, in turn, require statistical moments only up...

Advances in Micromodeling using Resistivity Borehole Images

John G. Manchuk, David L. Garner, Clayton V. Deutsch

CSPG Bulletin

... conductivity approximation such as the Simandoux equation or Waxman-Smits model. Resulting high resolution properties can be used to construct micromodels...

Log Interpretation: Chapter VI

George B. Asquith, Charles R. Gibson

AAPG Special Volumes

... ray index [EQUATION] Where: GRmax = gamma ray maximum (shale zone) GRmin = gamma ray minimum (clean sand) GRlog = gamma ray log (shaly sand) After...

Abstracts: Converted Wave Processing in the EOM Domain; #90173 (2015)

Thais A. Guirigay and John B. Bancroft

Search and Discovery.com

... wave. The processing methods start with the DSR equation (1) or (3), with the appropriate P and S velocities for each leg of the ray path...

SONIC LOG APPLICATIONS - EASTERN VENEZUELA

W. F. Clarke

Asociación Venezolana de Geología, Minería y Petróleo (AVGMP)

... constants both of the rock matrix and its saturating fluid. However, as the rock system comes under pressure, it is possible to apply a ray path...

Elastic wave reverse-time migration with dynamic focused beams for weak anisotropic media

Ning Qin

International Meeting for Applied Geoscience and Energy (IMAGE)

... wave solution of dynamic ray tracing equation, respectively. According to the principle of reciprocity, the propagation matrix from point P...

Abstract: Raypath-Consistent Shear Wave Statics; #90224 (2015)

Raul Cova, David Henley, and Kris Innanen

Search and Discovery.com

... by equation 3, 2D ray-tracing over a gridded model was performed. A low velocity layer with a dip of 45⁰ and velocity of 500 m/s was used for the raytracing...

Star: Shallow Time Anomaly Replacement

Michael O. Marcoux, Lee Lu

Southeast Asia Petroleum Exploration Society (SEAPEX)

... predictions based on ray considerations only. This aspect is investigated using wave equation modelling. The effect on the reflection time curve...

A quantitatively determining gas saturation method by pulsed neutron logging technique in complex cased borehole

Guiping Xiao, Feng Zhang, Jilin Fan, Fangwei Tang, Wei Zheng Shang

International Meeting for Applied Geoscience and Energy (IMAGE)

.... The equation 30 25 Count It can be found that the change of inelastic gamma-ray count ratio of different gas saturation under can be ignored compared...

Geopressure Calculations in Real-time to Calibrate Operation Windows, #41931 (2016).

Carlos Martinez, Franklig Rodriguez, Edwin Hernandez, Edgar Gonzalez, Luis Corrales, Concepcion Isidro, Adrehny Leon

Search and Discovery.com

... are calculated using Resistivity and Gamma Ray logs with LWD or tools after running of electrical cable, for which you must wait to receive them...

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)

... Content of Appalachian Devonian Shales from Gamma Ray Logs: Schmoker J.W.- APG Bulletin, Vol 65, 1981 8. Determination of Organic Content...

Porosity Determination by 3D High-Resolution X-Ray Computed Microtomography and Its Correlation with Gas Adsorption Technique; #40509 (2010)

Inaya Lima, Milena Oliveira, Paula Rocha, Francisco Souza, Carlos J. Abreu, and Ricardo Lopes

Search and Discovery.com

... produces a cone X-ray beam in the object area, as can be seen in Equation 1. The simplest common elements of -CT are an X-ray source, an imaginary...