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The AAPG/Datapages Combined Publications Database
Showing 5,906 Results. Searched 200,616 documents.
3D GPR data mel-frequency cepstral coefficients features for effective CNN classification of urban utilities
Jide Nosakare Ogunbo, Sang Hun Baek, Sang-Wook Kim
International Meeting for Applied Geoscience and Energy (IMAGE)
... accurate results. Therefore, we propose an accurate real-time method for classifying cavity, box, manhole, patch, and pipe in an urban setting. 1D...
2024
A practical approach to automate end-to-end multi-stage iterative source separation with prior framework using machine learning
Rajiv Kumar, Yousif Izzeldin Kamil Amin, Riccardo Giro, Sunil Manikani, Nam Pham, Massimiliano Vassallo, Phillip Bilsby, Tao Zhao
International Meeting for Applied Geoscience and Energy (IMAGE)
... et al., 2008; Akerberg et al., 2008; Abma, 2010; Hays et al., 2014; Mosher et al., 2014). The underlying principle of sparsity-based source separation...
2024
3 Terrestrial Heat Flow
P. E. Gretener
AAPG Special Volumes
... : [EQUATION] Qz is the heat flow per unit time and unit area in the vertical direction. It is assumed that the flow is plane as in the simple...
1981
Nature, Usage, and Definition of Marker-Defined Vertically Segregated Rock Units: GEOLOGICAL NOTES
James M. Forgotson, Jr.
AAPG Bulletin
...-stratigraphic, biostratigraphic, and idealized time-stratigraphic units. The recent paper by Wheeler and Mallory (1956) further clarifies and illustrates...
1957
Geophysics Is Here to Stay
W. B. Robinson
AAPG Bulletin
... satellite navigation equipment for accurate location of the ship at the time an observation is made. Observing three sensors simultaneously permits data...
1971
Abstract: Groundwater Balance Research to Improve the Accuracy of Drawdown Predictions in the Surat Basin, Queensland; #90234 (2015)
Lucy Reading, Greg Keir, Neil McIntyre, and Josh Larsen
Search and Discovery.com
... degree and over what time-scale this may extend to the adjacent aquifers. A regional groundwater flow model has been developed by the Queensland...
2015
Using Multiple Downhole VSP Arrays for Monitoring and Locating Passive Microseisms in the Oil Reservoirs; #41561 (2015)
Zuolin Chen
Search and Discovery.com
... by using a single-VSP technique. In principle, a 3-C geophone array allows the location of a microseismic event, where the direction of the event...
2015
Evidence for Temperature-Adjusted Sediment Distributions in the Back-Barrier Tidal Flats of the East Frisian Wadden Sea (Southern North Sea)
F. Krögel, B. W. Flemming
Special Publications of SEPM
... sively decreasing grain sizes and the resulting landward fining sequence of shore parallel facies belts Applying the viscosity principle one should...
1998
Geological Limitations to Oil Law
William W. Porter II
AAPG Bulletin
... principle in determining ownership of oil and gas, mainly because of the impossibility of determining ownership on any other basis. It is the writer's...
1938
Seismic Imaging Technology: Part IV: The Ultimate Marine Seismic Acquisition Technique?
Lasse Amundsen, Martin Landrø
GEO ExPro Magazine
..., No. 5, October 2008 Copyright © 2018 Geopublishing Limited Illustration of OBS acquisition. The principle of reciprocity states that a receiver (yellow...
2008
Principles of an Efficient Method of Opening and Testing of Strata During Drilling of Prospecting Wells
G. S. Gazyan
Petroleum Geology: A Digest of Russian Literature
.... This principle should become a basis for further improvement in the technique and organization of oil and gas exploration. It should not exclude...
1962
Development of the Mills Ranch Complex, Wheeler County, Texas
R.M. Jemison, Jr.
West Texas Geological Society
... flow rate of 93,050 MCF per day. Since that time a continuous program, chiefly by the Chevron-Freeport group, has proven at least three separate...
1978
Long Beach, California, Earthquake of March 10, 1933: GEOLOGICAL NOTES
J. Edmund Eaton
AAPG Bulletin
... Pacific time, Friday evening, and resulted in the death of 123 persons and the injury of several thousand others in and near the city of Long Beach...
1933
Fault Shadow Correction Methodology
P. Julien, J. L. Broyer, O. Bernet-Rollande
Indonesian Petroleum Association
.... These "pushdown" effects can be observed on seismic time images beneath dipping extensional faults, and are due to seismic rays that first travel through...
2000
Application of Capacitance-Resistive Model With Global Optimizer
Aulia Ahmad Naufal, Sabrina Metra, Deva Tasia Ulitha, Julfree Sianturi, Edy Suwito
Indonesian Petroleum Association
... should be lumped. By assuming a constant-field injection rate for a time interval Δ𝑡 𝑘 (SVIR), and applying time superposition principle to solve...
2021
Effects of internal gradients on pore-size distribution in shale
Christian Obasi, and Jack Pashin
AAPG Bulletin
... collected at 10 echo times: 150, 200, 300, 400, 500, 600, 800, 1000, 1200, 1500 μs, with delay time stacks being at least three times the relaxation time...
2018
Opinion of Structural Mechanics of Central Basin Platform Area, West Texas
John W. Harrington
AAPG Bulletin
... is powered horizontally at right angles to the least compressive force (tension) of basin formation. The compatibility of these forces in time and space...
1963
Milankovitch Period Uncertainties and Their Impact On Cyclostratigraphy
David Waltham
Journal of Sedimentary Research (SEPM)
..., and climate precession. However, the periods of these astronomical cycles, in the past, are not perfectly known because: (i) they drift through time...
2015
Structure Elements of Domes
Robert Balk
AAPG Bulletin
... groups are similar, although developed through very different mechanical processes. For some time, the internal structures of intrusions have been...
1936
Mixing at Turbidity Current Heads, and Its Geological Implications
J. R. L. Allen
Journal of Sedimentary Research (SEPM)
... originated such sole structures as flute and tool marks. The size of any flute marks would depend at least upon the transit time of the head relative...
1971
Factors Controlling the Holocene Avulsion History of the Rhine-Meuse Delta (The Netherlands)
Esther Stouthamer, Henk J.A. Berendsen
Journal of Sedimentary Research (SEPM)
... belts, and time correlation of undated channel-belt fragments. Avulsion sites were inferred from the paleogeographic reconstruction. At least 91...
2000
Diagenesis of Sandstones: Processes and Problems
Harvey Blatt
Wyoming Geological Association
..., calcite, and dolomite are the most abundant chemical elements; (2) the presence and type of chemical cement in a sandstone may vary with time so...
1966
Use of Seismic-Derived Velocities for Stratigraphic Exploration on Land: Seismic Porosity and Direct Gas Detection: Chapter 4
Norman S. Neidell, J. H. Beard, Ernest E. Cook
AAPG Special Volumes
... the amplitude information further corroborate he reality of detected porosity zones and assist in localizing them in reflection time. At the same time...
1985
Interpretation of Methanic Diagenesis in Ancient Sediments by Analogy with Processes in Modern Diagenetic Environments: Part 1. Concepts and Principles
Donald L. Gautier, George E. Claypool
AAPG Special Volumes
... that an isotopic shift of at least 16 per mil had occurred in aqueous bicarbonate during the time elapsed from the cessation of calcite precipitation until...
1984
Stratigraphic and Structural Interpretations Using Diffraction Seismograms
Richard K. Snavely , A.K.M. Sarwar
GCAGS Transactions
... are similar to those on the field seismic section. Baker, B.B., and Copson, E.T., 1936, The mathematical theory of Huygen's Principle: Oxford...
1988