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The AAPG/Datapages Combined Publications Database
Showing 3,535 Results. Searched 200,619 documents.
Interpretation of Gamma-Ray Logs
James K. Hallenburg
Earth Science Bulletin (WGA)
... and there are not enough natural neutrons present to make a good measurement. Calculations The area under the gamma ray curve is a function of the amount of radioactive...
1973
Optimised 3D Land Geophysical Survey Design - A Case Study
P. van Baaren
Papua New Guinea (PNG) Petroleum Convention Proceedings
... solely on theoretical calculations which, although they may be generally valid, often make unrealistic assumptions and fail to account for the true...
2000
Imrpoved Reserve Estimates Using Spatial Averaging
Mohan Kelkar
Unconventional Resources Technology Conference (URTEC)
... proved to be difficult. Seismic interpretations failed to predict the performance accurately due to seismic attenuation effects, a shadow effect...
2015
Developing a New Technique Through Partnering with Contractors: Reservoir Prediction Utilizing AVO Walkaway VSP Data to Calibrate Surface Seismic Gathers, a Case Study in Indonesia
Patricia L. C. Henderson, Dan Hampson, Scott Leaney, Nigel Smith, John Rice, Dave Boreham
Indonesian Petroleum Association
... for anisotropic calculations (W. Scott Leaney, Exploration Geophysics(1993)). An offset of 1,500 meters would have sufficed to cover critical angle. In the future...
1994
Case Study: Using an Acoustically Derived Surface Metric to Approximate Fluid Distribution Uniformity During Stimulation
Craig Cipolla, Michael McKimmy, John Lassek, Kinleigh Fatheree, Saeed Aghdam, Josh Kroschel, Muhammad Mujtaba Khan
Unconventional Resources Technology Conference (URTEC)
... by the theoretical rate drop used in the model (red). The bottom plots show the associated pulse attenuation calculated using the theory derived Dunham...
2024
SoundBal: Two-Phase Production Logging by Integrating Mass Balance and DAS-Based Speed of Sound
Peyman Moradi
Unconventional Resources Technology Conference (URTEC)
.... By relying on mass balance calculations, the method inherently avoids unphysical, non-monotonic flow velocity profiles often produced by conventional DAS...
2025
Does Local Resuspension Maintain the Benthic Nepheloid Layer in Southeastern Lake Michigan?
Nathan Hawley , Barry M. Lesht
Journal of Sedimentary Research (SEPM)
...) empirical equation for southern Lake Michigan to convert the beam attenuation coefficient calculated from the transmissometer observations...
1995
Inferring Stratigraphy from Seismic Data
R. E. Sheriff
AAPG Bulletin
... of only 2 msec, a modest amount, the effect is attenuation of frequencies above 90 Hz. Improve resolution thus requires less filtering because...
1976
Regional Structural Synthesis, Wyoming Salient of Western Overthrust Belt
Joe S. Dixon
AAPG Bulletin
... to make massive usage of the restoration process both in confirmation of interpretation and in final displacement calculations. Dahlstrom's (1969) methods...
1982
Building Well and Fluid-Specific Pipe Friction Curves, Monitoring Perforation Cluster Efficiency During Stimulation, and Measuring Near-Wellbore Tortuosity Using Acoustic Friction Analysis
Eric M. Dunham, Saeed Rahimi-Aghdam, Junwei Zhang, Nathan Crawford, Craig Cipolla, Michael McKimmy, John Lassek
Unconventional Resources Technology Conference (URTEC)
..., it is attenuated by pipe friction. This attenuation is expressed in the wellhead pressure as an additional reduction in pressure (feature [2] in Figure 2...
2024
Chapter Eight: Horizon and Formation Attributes
Alistair R. Brown
AAPG Special Volumes
... and attenuation and these form the basis of our attribute classification. Figure 8-1. Seismic attributes derived from or related to the basic seismic...
2011
Water/Oil Displacement by Spontaneous Imbibition Through Multiscale Imaging and Implication on Wettability in Wolfcamp Shale
Sheng Peng, Yijin Liu, Lucy Tingwei Ko, William Ambrose
Unconventional Resources Technology Conference (URTEC)
... result in strong X-ray attenuation, and thus was used in the micro-CT imaging for shale (Peng et al., 2017; Fodgen et al., 2014). SEM X-ray energy...
2019
Intraplate Stresses and the Tectono-Stratigraphic Evolution of the Central North Sea: Chapter 35: North Sea and Barents Shelf
H. Kooi, S. Cloetingh
AAPG Special Volumes
... by the loading of sediments that accumulate in these basins (Sleep, 1971), isostatic response to crustal attenuation by stretching (McKenzie, 1978...
1989
Detailed internal architecture of a fluvial channel sandstone determined from outcrop, cores, and 3-D ground-penetrating radar: Example from the middle Cretaceous Ferron Sandstone, east-central Utah
Rucsandra M. Corbeanu, Kristian Soegaard, Robert B. Szerbiak, John B. Thurmond, George A. McMechan, Deming Wang, Steven Snelgrove, Craig B. Forster, Ari Menitove
AAPG Bulletin
... attenuation and its numerical simulation in 2.5D: Geophysics, v. 62, p. 403-414. Over the past 15 years an acute realization of the limitations of one...
2001
Use of SEASAT-Derived Free-Air Gravity to Interpret the Crustal Structure of Southeast Asia
M. T. Angelich
Indonesian Petroleum Association
... is processed in frequency space. It is common in such processing to apply a high frequency attenuation filter to improve the signal-to-noise ratio. Haxby...
1986
Nanoscale Visualization of Gas Shale Pore and Textural Features
Bolivia Vega, Joy C. Andrews, Yijin Liu, Jeff Gelb, Anthony Kovscek
Unconventional Resources Technology Conference (URTEC)
... materials have smaller X-ray attenuation properties than larger density materials. In a porous medium, ambient conditions sample, it is assumed that air (ρ...
2013
The Effects of Seismic Data Conditioning on Pre-Stack Simultaneous Impedance Inversion
Scott W. Singleton
GCAGS Transactions
..., S., 2008, The use of seismic attenuation to aid simultaneous impedance inversion in geophysical reservoir characterization: The Leading Edge, v...
2008
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
... the result accuracy of saturation calculations. Zhao (2015) studied the effects of fracture apertures on cementation exponent by the FEM based...
2022
Estimation of Methane from Kerala - Konkan Onshore Peatlands of South West Coast India by Ground Penetrating Radar Method, #51460 (2018).
K. Devi, Rajesh R Nair
Search and Discovery.com
... enhancement preceding interpretation due to attenuation by the presence of ionic molecules and several noise sources during data acquisition. The data...
2018
Geology of the Attaka Oil Field, East Kalimantan, Indonesia
C. M. Schwartz, G. H. Laughbaum Jr., B. S. Samsu, J. D. Armstrong
Indonesian Petroleum Association
... and by increasing the amplitude of the low energy events (Figures 11-13). Calculations indicate that velocities in the gas sands between .26 seconds and 1.4...
1973
Coupling diagenesis and mechanics for more realistic simulation of natural fracture pattern development
Byungtark Lee, Jon E. Olson, Stephen E. Laubach
International Meeting for Applied Geoscience and Energy (IMAGE)
... distribution. Consequently, the improved crack interaction calculations of the S3D DDM did not make a significant difference in the results and could...
2022
Characterization of Ground Water Flow to a Bacteria Impaired Surface Water Body Using Heat as a Tracer
Katrina B. Simons, Richard Hay, Egon Weber
GCAGS Transactions
... such as hydraulic conductivity and stream characteristics like streambed leakage in the subsequent calculations of ground water – surface water flux...
2007
Anthropogenic Sinkholes in the Delaware Basin Region: West Texas and Southeastern New Mexico
Lewis Land
West Texas Geological Society
... calculations indicate a roof diameter of 80 m. This figure is roughly consistent with the ∼111 m diameter of the sinkhole that later formed above...
2009
Seismic Data-Processing Techniques in Exploration for Reefs, Northern Michigan
P. L. McClintock
AAPG Special Volumes
... for repetitive calculations, the analyst remains the key decision-maker in determining the quality of the final section. Example From Manistee County...
1977
A smart merge workflow for dual-azimuth images
Xu Li, Diwi Snyder, Dez Chu, Inmaculada Dura-Gomez
International Meeting for Applied Geoscience and Energy (IMAGE)
.... (2013) to include local coherency for merge weight calculations. Our preference of post-migration over pre-migration merge is based on (1) flexibility...
2022