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The AAPG/Datapages Combined Publications Database
Showing 20,637 Results. Searched 200,616 documents.
Colour Image Transformations of Wireline Logs as a Medium for Sedimentary Profile Analysis
D.R. Collins, J.H. Doveton
CSPG Bulletin
... by the equation: s = a0 + a1d + a2d2 + a3d3 Where s is the cubic trend in log response and d is depth position. The filter window is made up of (2m...
1988
Interpretative PSDM Workflow for Solving Complex Imagery Below Faults and Carbonates Reefs in South Mahakam, Kutai Basin: An Interpreters Point of View
Cepi Muhamad Adam, Nadir Abdoun, Bertrand Duquet, Florent Bertini, Yves Le Stunff
Indonesian Petroleum Association
... the interpreter and the depth imager is indeed critical to build a correct depth-velocity model that will noticeably improve the seismic image. Velocity model...
2009
Basic Seismic Processing: Part 7. Geophysical Methods
Peter M. Duncan
AAPG Special Volumes
.... This effectively collapses the spatial spreading of the signal to a single downgoing ray. Spatial resolution approaches the trace interval. Seismologists call...
1992
Resurrection of a reservoir sandstone from tomographic data using three-dimensional printing
Sergey Ishutov, Franciszek J. Hasiuk, Shawn M. Fullmer, Antonio S. Buono, Joseph N. Gray, and Chris Harding
AAPG Bulletin
... trend line and black data points are a porosity–permeability relation (with power law equation and linear regression fit [R2]) for high porosities (>9...
2017
The Effects of Porestructure on Sonic Velocity in Carbonates: Examples from Gunung Rapat Limestone, Ipoh
Muhammad Hafiz Izuddin, Chow Weng Sum, Mohd Shafeea Leman, Khor Wei Chung
Geological Society of Malaysia (GSM)
...The Effects of Porestructure on Sonic Velocity in Carbonates: Examples from Gunung Rapat Limestone, Ipoh Muhammad Hafiz Izuddin, Chow Weng Sum, Mohd...
2016
Identification and distribution of hydraulic flow units of heterogeneous reservoir in Obaiyed gas field, Western Desert, Egypt: A case study
Mohamed A. Kassab, Ahmed Elgibaly, Ali Abbas, and Ibrahim Mabrouk
AAPG Bulletin
..., the first track is the gamma-ray (GR) log, then the measured depth (MD) and the true vertical depth below sea level (TVDSS). Then the porosity logs...
2021
Fracture imaging using DAS-recorded microseismic reflections
Yuanyuan Ma, David W. Eaton, Chaoyi Wang
International Meeting for Applied Geoscience and Energy (IMAGE)
... on f-k filtering and ray-tracing to map reflections from the data domain to the model domain. Fracture images can then be integrated with low-frequency...
2022
Influence of Shale Distribution Types on the Effective Porosity of Sandstone Reservoirs
Gregory J. Ferguson, James J. Willis, Duncan S. McIntosh, Jr., Jesse W. Zwennes, James Pasley, Garrett M. Goettel
GCAGS Transactions
... as indicated by the drop in resistivity. In this case example, we calculated total shale volume using the gamma ray log, using the linear gamma ray index...
2018
Character of Overpressure in the Deep Tuscaloosa Trend, Louisiana
Philip H. Nelson
GCAGS Transactions
... the sandstone-shale sequence of the lower Tuscaloosa Formation. Using an equation relating sonic velocity and effective stress, pore pressure computed...
2003
A Deterministic Lithology Model for the Green River-Upper Wasatch Interval of the Uinta Basin; #10745 (2015)
Robert Cluff, Suzanne Cluff, Ryan Sharma, Chris Sutton
Search and Discovery.com
... at least one additional measurement. For example, we could add a fourth equation relating the gamma ray to VCLAY instead of only using it to separate clean...
2015
Processes of Sediment-Wave Construction Along the Present Zaire Deep-Sea Meandering Channel: Role of Meanders and Flow Stripping
Sebastien Migeon,, Bruno Savoye, Nathalie Babonneau, France-Lucy Spy Andersson
Journal of Sedimentary Research (SEPM)
... µm at the base of the bed-type 6 in Equation 1 (Appendix) suggests a velocity 0.50 m s-1 during the initial deposition. A maximum grain size 400 µm...
2004
Abstracts: An Investigation of Systematic Location Errors of Microseismic Events; #90173 (2015)
Martin E. Nicola, Bernd Milkereit, and Emmanuel Bongajum
Search and Discovery.com
... in Figure 1 smooth (blue log, Figure 1). Making them smooth involves computing the average values for certain depth intervals. The average P-wave velocity...
2015
Improved Tip Screenout Design for Medium-Permeability Reservoirs Using a Modified Pad Equation – Example from the Telisa 1,530-Ft Sand, Bangko Field, Sumatra, Indonesia
Orded, Hendro Tjahjono, Mezlul Arfie, Mohammed Badri
Indonesian Petroleum Association
...Improved Tip Screenout Design for Medium-Permeability Reservoirs Using a Modified Pad Equation – Example from the Telisa 1,530-Ft Sand, Bangko Field...
2003
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...
2021
High concentration methane hydrate in a silt reservoir from the deep-water Gulf of Mexico
Stephen C. Phillips, Peter B. Flemings, Melanie E. Holland, Peter J. Schultheiss, William F. Waite, Junbong Jang, Ethan G. Petrou, and Helen Hammon
AAPG Bulletin
... transfer and analysis system scanning from the upper 70 cm of core H005-03FB including (A) gamma-ray attenuation density, (B) P-wave velocity (C) linear...
2020
In Situ Stress Prediction Using Differential Strain Analysis and Ultrasonic Shear-Wave Splitting
B. Widarsono, J. R. Marsden, M. S. King
Indonesian Petroleum Association
... by penny-shaped cracks, explains variation of S-wave velocity with variations in ray path angle and wave polarization relative to the crack plane...
1996
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...
1979
Methods in Exploration Series #2: Seismic Models of Sandstone Stratigraphic Traps in Rocky Mountain Basins - Introduction
Robert T. Ryder, Myung W. Lee, Gerald N. Smith
AAPG Special Volumes
... by a wave-equation solution, but these models did not differ significantly from the models produced by the ray-theory program. Each seismic model...
1981
Abstract: Prospects Maturation of Unique Globigerina Limestone by Integration of Formation Evaluation and Pre-Stack Seismic Inversion Analysis; #91209 (2025)
Hendra Himawan, Indra Sumantri
Search and Discovery.com
... equation that was re-expressed by Fatti et al. (1994). The angle-dependent reflectivity can be calculated using P-wave velocity, S-wave velocity...
2025
Abstract: Gamma Ray Normalization and Fluvial Characterization: The Paleocene Paskapoo Formation, Alberta; #90187 (2014)
Erik M. Quartero, David Bechtel, Andrew Leier, and Laurence R. Bentley
Search and Discovery.com
.... The normalized value is determined using Equation 1. The normalized curve is then clipped at its base and attached to the original gamma ray log to give...
2014
ABSTRACT: Methods of Determination of Porosity and Permiability in the Heteogeneous Carbonate Reservoirs- a Review; #90118 (2011)
Abhishek Dey and Rishabh Johri
Search and Discovery.com
... porosimetry or mercury injection capillary pressure curves, Nuclear Magnetic Resonance(NMR) , X-ray computed tomography, optical microscopy images...
2011
Automatic rock strength prediction in data-limited wells
Max Millen, Scott Mildren, Thomas Flottmann
Australian Energy Producers Journal
... the velocity range. The depth plot demonstrates an increasing velocity trend with depth that is more pronounced in the actual data than the predictions...
2025
Stratigraphic Change in Organic Composition Demonstrated by Oil Specific Gravity-Depth Correlation in Tertiary Green River Oil Shales, Colorado
John Ward Smith
AAPG Bulletin
... the stratigraphic zero point and to simplify the numbers: [EQUATION] From this coding, samples above A-groove have negative depth code values and those...
1963
ABSTRACT: 2D multicomponent adaptive focused beam migration
Chao Chen, Zhenchun Li, Jianping Huang
Geological Society of Trinidad & Tobago
... according to the local velocity field in the propagation process and has a small beam width on the whole central ray, which makes it able to adapt...
2022
Abstract: AVO and Anisotropy from Logs and Walkaways, by S. W. Leaney and W. E. Borland; #90982 (1994).
Search and Discovery.com
1994