"Basement" to East Coast Continental Margin of North America

M. A. Mayhew

AAPG Bulletin

... and Beckman (1954) from the central Grand Banks both measured a low-velocity basement layer (4.9-5.2 km/sec) at a shallow depth of about 2 km. This layer...

Simulations of the Effects of Diagenesis on the Evolution of Sandstone Porosity

Cathal G. Dillon, Richard H. Worden, Stuart A. Barclay

Journal of Sedimentary Research (SEPM)

... and prediction of pore system modification. Diagenetic processes in real rocks are simulated using a combination of element X-ray maps and backscattered...

Seismic Models and Interpretation of The Casper Arch Thrust: Application to Rocky Mountain Foreland Structure

Riley C. Skeen, R. Randy Ray

Rocky Mountain Association of Geologists

... foreland thrusts. The models aid in understanding the velocity and ray path effects that distort seismic reflection data and complicate its...

Advanced Pulsed Neutron Multifunction Spectroscopy Logging: A Game Changer in Wells Evaluation and Production Enhancement Projects

Chiara Cavalleri

Indonesian Petroleum Association

... a state-of-art neutron generator and high-resolution gamma ray detectors, the multifunction spectroscopy technology obtains highly accurate elemental...

Mineral-Chemistry Quantification and Petrophysical Calibration for Multi-Mineral Evaluations; #41754 (2015)

Paul N. Theologou, Douglas McCarty, Timothy Fischer, Arkadiusz Derkowski, Rebecca Stokes, Ann Ollila

Search and Discovery.com

..., and that any measurement with a near linear response equation can be solved for including sonic logs (DT) and neutron logs (NPHI). However, this method also...

Know Before You Go!

Lars Zühlsdorff, Trond Haugland

GEO ExPro Magazine

... affect P-wave velocity. NORSAR Ray-based seismic modeling has come a long way and the motivation for this is simple enough: performing a modeling...

Statistical Model for Source Rock Maturity and Organic Richness Using Well-Log Data, Bakken Formation, Williston Basin, United States: GEOLOGIC NOTES

Katherine B. Krystinik, Ronald R. Charpentier

AAPG Bulletin

... variable was modified in the following way: (1) for each log variable a linear regression of the form, A + B (DEPTH), was constructed; (2...

Leaky Transform Faults and Terrane Migration During Seafloor Spreading

Zhang Fuqin, Ma Ruishi, Dong Huogen

Circum Pacific Council Publications

... in the northeast Pacific Ocean: Mendocino, Pioneer, and Mur­ ray, we get direct proof for stretching northward of the East Pacific Rise. South of each...

Diagenesis Severely Modified Reservoir Characteristics: A Unique Carbonate Reservoir from Alur Siwah Field, Indonesia; #20203 (2013)

Ricardo Maranu, Ismail Syarifuddin, Erham Adhitiawan, Nadia Nurul, Miftahurochman Miftahurochman, Ferry Baskaraputra, Luqman Luqman, Yudi Yanto, and Joan Lumban Tobing

Search and Discovery.com

... shows a good linear relationship. This suggests that porosity can be estimated from AI by a transform equation. So, it is interpreted that low AI...

Uncertainty in the Estimation of Volume of Shale from Well Log Data; #42342 (2019)

Ritesh Kumar Sharma, Satinder Chopra

Search and Discovery.com

... and is defined as IGR = (GRlog-GRmin)/(GRmax-GRmin); IGR represents gamma ray index, GRlog represents the gamma-ray reading at any depth, GRmin represents...

Determination of Permeability in Sandstone Reservoirs Affected by Diagenetic Kaolinite, Cinta Field, Southeast Sumatra

Paul C. Tonkin

Indonesian Petroleum Association

... equation 5 using gamma ray and density log values as input. Combining the relationships in equations 2, 3 and 4 a series of mathematically derived...

Varimax-Rotated Visible Derivative Reflectance Spectroscopy of the Utica Shale / Point Pleasant Formation in Ohio, #51678 (2020).

Julie M. Bloxson, Beverly Z. Saylor, Barbara M. Kemeh,

Search and Discovery.com

.... The data were processed with principal component analysis to extract mineral components, which were then verified with quantitative x-ray diffraction...

High Frequency Borehole Seismic Acquisition and Its Applications for Reservoir Delineation of the Bunyu Field, Onshore Kalimantan, Indonesia

Adriansyah, Patricius Sembiring, Mohammed Badri, Azhar Akhtar

Indonesian Petroleum Association

.... The first zone found at depth of 2727-2734 m; clearly seen by the Gamma Ray, neutron, density and resistivity logs. The resistivity log shows an increase...

De-risking hydrocarbon prospects in the presence of bentonite

Michelle Ellis, Carlos Alberto Montilla Nava, Marcelo Cecena, Hilarion Sanchez Hernandez

International Meeting for Applied Geoscience and Energy (IMAGE)

... in the area were selected for analysis all with measured density (RHOB), compressional velocity (Vp) and shear velocity (Vs). Five of these wells had bentonites...

Anomalous Velocities in Salton Sea Area, by Jack Cameron; #91024 (1989)

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3-D AVO Analysis and Modeling Applied to Fracture Detection in Coalbed Methane Reservoirs

Antonio C.B. Ramos, T.L. Davis

Rocky Mountain Association of Geologists

... directions of azimuthal anisotropy caused by the coal’s fracturing system. Two modeling techniques (using ray tracing and reflectivity methods) predict...

An Explanation of the Logarithmic Spiral Plan Shape of Headland-Bay Beaches

Paul H. Leblond

Journal of Sedimentary Research (SEPM)

...]/[R]. (3) In terms of the scaled variable x = r/R, the integral (1) becomes, after substitution of the depth profile (2). [EQUATION (4)] The integral...

Statistical Analysis of Fractures from the Hydraulic Fracture Test Site 1

Frank Male, Bethany Rysak, Robin Dommisse

Unconventional Resources Technology Conference (URTEC)

.... This allows one to tie an average velocity to a specific depth, and then tie that depth to a specific observed time across the entire seismic volume. Using...

Seismic Line Across Wind River Thrust Fault, Wyoming: ABSTRACT

William L. Basham, Walter F. Martin

AAPG Bulletin

... related to the high-velocity Precambrian granite. The effects of the velocity variations can be analyzed by ray tracing and by studying the near offset...

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

... behind-the-outcrop and measured its acoustic velocity, spectral gamma ray, and bulk density. We also measured relative dielectric permittivity...

Abstract: High-Accuracy Relative Event Locations using a Combined Multiplet Analysis and the Double-Difference Inversion; #90174 (2014)

Fernando Castellanos and Mirko van der Baan

Search and Discovery.com

...), which is intended to reduce the effect of unknown velocity heterogeneities along the source-receiver ray paths specially when dealing with dense...

Seismic Modeling of an Early Jurassic, Drowned Carbonate Platform: Djebel Bou Dahar, High Atlas, Morocco (1)

A. EWAN CAMPBELL and JAN STAFLEU

AAPG Bulletin

...). Reflection amplitudes calculated using image-ray migration were further modified by the program's use of the fluid-fluid component of the Bortfeld equation...

Re‐Evaluation of Hydrocarbon Shale Potential in Pematang Group Metas Field, Central Sumatra Basin

Meutia Fitri Hasan, Husein Agil Almunawwar, Junita Trivianty Musu, Shidqi Anugrah Diria, Agus Priyantoro, Humbang Purba, Ory Sadjati, Iyep Sopandi, Fadli Ruzi

Indonesian Petroleum Association

.... The multi-linear regression method uses a cross-plot between TOC values from geochemical analysis, and well log data, including gamma ray, density, neutron...

Carbon dioxide sealing capacity: Textural or compositional controls? A case study from the Oklahoma Panhandle*

Constantin Cranganu and Hamid Soleymani

Environmental Geosciences (DEG)

... (SEM), Sedigraph energy dispersive spectra (EDS), x-ray diffraction (XRD), Brunauer–Emmett–Teller-specific surface area, and total organic carbon...

Aeromagnetic Imaging of Faults in a Basin-Centered Gas Play, by William C. Pearson, #40078 (2003)

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