Tight Sand Water Saturation Calculations: What do They Really Mean? by Mike Mullen; #90042 (2005)

Search and Discovery.com

Stratigraphic Correlation of Well Logs by Computer Techniques

Albert J. Rudman , Robert W. Lankston

AAPG Bulletin

... is associated with a specified shift (^tgr) and the function is represented as ^phgr(^tgr), where ^tgr can range from 1 to (N + M - 1): EQUATION (1) The process...

Analysis of the Hydrocarbon Sandstone Distribution Using Rock Physics and Petrophysics Calculations, Simultaneous Inversion, Extended Elastic Impedance (EEI) and Curved Pseudo-Elastic Impedance (CPEI) in X Field Bonaparte Basin

Alfan Hidayah Kusuma, Meta Nisrina Syafitri, Zakki Fahrurrozi

Indonesian Petroleum Association

... the distribution of fluid in the study area) is also carried out. Gamma Ray (GR) is used to detect lithology and fluid distribution, while from the results of CPEI...

Determination of Calcite, Dolomite, Quartz and Clay Content of Carbonate Rocks

Frank E. Diebold, John Lemish, Carl L. Hiltrop

Journal of Sedimentary Research (SEPM)

... in highway concrete. Three quantitative X-ray methods for calcite and dolomite are investigated. The first, a comparatively simple X-ray method...

Abstract: Kirchhoff Imaging in a Matrix Form. Part I: Modelling; #90174 (2014)

Abdolnaser Yousefzadeh and John C. Bancroft

Search and Discovery.com

...ight is added to matrix by replacement of ones with proper amplitude weights. By using a ray tracing program instead of DSR equation, this tech...

Abstract: Kirchhoff Imaging in a Matrix Form. Part II: Least Squares Migration; #90174 (2014)

Abdolnaser Yousefzadeh and John C. Bancroft

Search and Discovery.com

...lacing the elements by the calculated migration weight. If instead of using the DSR equation, we use a ray tracing program, this technique can be ext...

Prediction of Fracture Porosity from Well Log Data by Artificial Neural Network, Case Study: Carbonate Reservoir, DEPOKŽ Field

Okok Wijaya, Pebrian Tunggal P, Ahmat Dafit Hasim, Depta Mahardika, Sungkono, Bagus Jaya S

Indonesian Petroleum Association

... values of well log data reading must be normalized between 0 and 1 using the maximumminimum normalization given by the equation: Gamma ray log - Low...

Log Response as a Model for Production: Deep Wilcox Sandstones, Provident City Field, Lavaca County, Texas

James L. Collins

GCAGS Transactions

..., plotted on resistivity-porosity crossplots (Pickett, 1966) as a means of comparative analysis, defined a water saturation equation. Cutoffs of < 50% Sw...

Influence of Basement Structures on Stress Regimes in the Surat and Bowen Basins, Southeast Queensland

Samuel Brooke-Barnett, Thomas Flottmann, Pijush K. Paul, Seth Busetti, Peter Hennings, Ray Reid

Petroleum Exploration Society of Australia (PESA)

..., Pijush K. Paul, Seth Busetti, Peter Hennings, Ray Reid Influence of basement structures on stress regimes in the Surat and Bowen Basins, southeast...

Seismic Anisotropy Modeling from Well Log in Talang Akar Formation, South Sumatra, Indonesia; #41360 (2014)

Thariq Guntoro, Intan Andriani Putri1, and Dwa Desa Warnana

Search and Discovery.com

... clay volume was extracted from a gamma ray log. By using the AVO equation using anisotropic parameters, the anisotropic seismic model can be determined...

Abstract: Converted-wave Time Imaging … Nuts and Bolts; #90187 (2014)

Shaowu Wang, Thomas Hollis, and Wayne Nowry

Search and Discovery.com

... imaging is desirable for joint PP and PS pre-stack inversion of petro-physical parameters. The real data example, which shows strong ray bending...

Abstract: Quantifying Total Organic Carbon (TOC) from Well Logs Using Support Vector Regression; #90187 (2014)

Yexin Liu, Zhuoheng Chen, Kezhen Hu, and Chris Liu

Search and Discovery.com

... used in shale gas reservoir evaluation. In this study we propose an improved ΔlogR equation to calculate apparent logs (density, sonic, gamma ray...

Determination of Depth Models Through Self-Consistent Structural Modeling to Help Delineate Hydrocarbon Traps in the Uinta Basin

Alvin K. Benson

Utah Geological Association

... 219 226 Seismic reflection data can be modeled using the wave equation (or ray tracing) to help “unravel” complex geology. This approach is needed...

An Interpreter's Guide to Improvements in Depth Imaging through Model-Based Velocity Estimation and Refinement

Andy Furniss

Petroleum Exploration Society of Australia (PESA)

... results as ray bending still occurs due to velocity variations within layers and at layer boundaries. The Dix equation itself is based on several...

Porosity-Profile Determination from Electric Logs

T. R. Wright , Sylvain J. Pirson

AAPG Bulletin

... by Archie's formula under the assumption of 100 per cent saturation in mud filtrate: EQUATION (1) where ^phgr is the porosity of the formation...

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 Gassmann’s equation. Velocity – porosity and clay content trends were used to link sedimentological and rock physics...

Dissolution and Precipitation Kinetics of Kaolinite: Initial Results at 80°C with Application to Porosity Evolution in a Sandstone

K. L. Nagy, C. I. Steefel, A. E. Blum, A. C. Lasaga

AAPG Special Volumes

...: [EQUATION] or [EQUATION] The present data on dissolution rates indicate linearity of the rates near equilibrium. The dissolution and precipitation rates...

Extended Abstract: Full Waveform Inversion for Detailed Velocity Analysis

Jerry Kapoor, Denes Vigh

GCAGS Transactions

...) is an advanced velocity model building process that uses the full two-way wave equation. Existing methods use a ray-tracing approach to distribute velocity...

Abstract: Kirchhoff Prestack Time Migration with Angle Domain Common Image Gathers; #90174 (2014)

Jianhua Pan, Robert Tilson, Gerry Schlosser, and Elvis Floreani

Search and Discovery.com

... velocity migration procedure, and the image at any subsurface location is related only to the RMS velocity value at this location, the ray is actually...

Wave-equation based inversion for carbonate reservoir characterization in Kuwait

Rao Narhari, Ahmad Al-Sabari, Afrah Al-Ajmi, Justin Ugbo, Jeremy Harris, Gerard Soto, Panos Doulgeris

International Meeting for Applied Geoscience and Energy (IMAGE)

...Wave-equation based inversion for carbonate reservoir characterization in Kuwait Rao Narhari, Ahmad Al-Sabari, Afrah Al-Ajmi, Justin Ugbo, Jeremy...

Abstract: Modelling Near-field Effects in VSP-based Q-estimation Part 1: Theoretical Developments; #90171 (2013)

Arnim B. Haase and Robert R. Stewart

Search and Discovery.com

... the vertical (at the current receiver). The P-wave displacements along the ray, computed with Equation 2, are obtained by integration over (always) real...

A New Geochemical Logging Tool and Interpretation Methodology Improves Reservoir Characterization in South America

Diana Espino, Anthony Fondyga, Marta Becerra, Xavier Goddyn

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... of geochemistry and related lithology. Some have anomalously high gamma ray activity, unrelated to clay content, while others have volcanics and intrusives...

Abstract: Regime Rays: Visualizing the Fermat/Snell Loci in Homogeneous Anisotropic Media; #90171 (2013)

William J. Vetter

Search and Discovery.com

... segments which are here the focus, is incomplete/incorrect re the familiar Fermat/Snell ray theory premises [-> FS-rays]. The traveltime expression tON = tOE...

A Porosity Based Pore Pressure Estimation in an Indonesian Carbonate Reservoir

Sunawar Kunaifi, Krishna Pratama Laya, Sarvagya Parashar, Luqman, Banu Andhika

Indonesian Petroleum Association

..., including the Triple Combo test, which included natural Gamma Ray, Neutron Porosity, Density, and Resistivity measurements. Dipole Sonic and Formation...

Eikonal equation-based adjoint-state characteristic reflection traveltime tomography: Method and application in real dataset

Jianming Zhang, Liangguo Dong, Jianhua Wang, Yilin Wang, Chao Huang

International Meeting for Applied Geoscience and Energy (IMAGE)

...Eikonal equation-based adjoint-state characteristic reflection traveltime tomography: Method and application in real dataset Jianming Zhang, Liangguo...