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The AAPG/Datapages Combined Publications Database
Showing 2,007 Results. Searched 200,636 documents.
Seismic Stratigraphy and Global Changes of Sea Level: Part 5. Chronostratigraphic Significance of Seismic Reflections: Section 2. Application of Seismic Reflection Configuration to Stratigraphic Interpretation
P. R. Vail, R. G. Todd , J. B. Sangree
AAPG Special Volumes
... seismogram is a 15-Hz first Gaussian derivative wavelet, essentially a sine wave. The detailed synthetic plots display from left to right: (1) well...
1977
Application of Amplitude, Frequency, and Other Attributes to Stratigraphic and Hydrocarbon Determination: Section 2. Application of Seismic Reflection Configuration to Stratigraphic Interpretation
M. T. Taner, R. E. Sheriff
AAPG Special Volumes
... attitudes. FREQUENCY The time derivative of the instantaneous phase is called instantaneous frequency. Like instantaneous phase, it is a value...
1977
Possible Mechanism for Concentration of Brines in Subsurface Formations
J. D. Bredehoeft , C. R. Blyth , W. A. White , G. B. Maxey
AAPG Bulletin
... time for equilibrium to be reached, is given by the following relationship [EQUATION] The concentration gradient is given by the first derivative...
1963
The Future of Applied Sedimentary Geology: PERSPECTIVES
Wolfgang Schlager
Journal of Sedimentary Research (SEPM)
... (and its derivative, permeability). Migration and accumulation of hydrocarbons and drinking water as well as the spread of underground pollution (which moves...
2000
A Note on the Preservation of Offshore Tsunami Deposits
Robert Weiss, Heinrich Bahlburg
Journal of Sedimentary Research (SEPM)
.... Considering only the x component of Equation 1 and evaluating the temporal derivative, we get: Equation 2 is based on Bernoulli's theorem. Similar...
2006
Ozark Precambrian-Paleozoic Relations: Discussion of Igneous Rocks Exposed in Eastern Kansas: DISCUSSION
Paul C. Franks
AAPG Bulletin
... and ranging in thickness from 1 to 12 in hes. He interpreted the dark blue rock to be igneous; it probably is a derivative of the mica peridotite magma...
1966
Regression Models for Faulted Structural Surfaces
W. R. James
AAPG Bulletin
... partial derivative of S with respect to a3 equal to zero yields: EQUATION (5) Setting the first partial derivatives of S with respect to the b's...
1970
Use of Dipmeter Data in Clastic Sedimentological Studies (1)
C. HOCKER , K. M. EASTWOOD , J. C. HERWEIJER , and J. T. ADAMS
AAPG Bulletin
... of resistivity events by correlating extrema of the first derivative of the curves (Figure 4). Because End_Page 106------------------------------ strong...
1990
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
... of the total energy—that is, the partial derivative of energy to the voltage of a node is zero. The periodic boundary is selected as the limiting...
2022
Rethinking power density for geothermal resource estimation
R. Chadwick Holmes, and Laura Huebner
AAPG Bulletin
... values, and the spatial derivative was applied to the crystalline crustal thickness for a horizontal thickness gradient feature. Table 1 lists...
2025
GEO-India 2nd South Asian Geoscience Conference, 12-14 January 2011, Greater Noida, New Delhi, India; Abstracts #90118 (2011).
Search and Discovery.com
2011
Abstract: A study of Spectral Broadening Methods for Multicomponent Data; #90174 (2014)
Chuck Ursenbach, Peter Cary, and Mike Perz
Search and Discovery.com
... of the second event. This is an artifact of the discontinuity in i and in the derivative of 0, and should not be present. One possible approach...
2014
Update 2010: Airborne Transient Pulse Surveys for Hydrocarbon ExplorationMajor Recent Improvements; #40686 (2011)
Leonard A. LeSchack, John R. Jackson, James K. Dirstein, William B. Ghazar, Natalya Ionkina
Search and Discovery.com
... E-Mail and imported directly into mapping programs or spreadsheets for filtering before mapping. Various averaging functions, such as derivative...
2011
Mapping of Reservoir Facies within Heterogeneously Deposited and Structurally Deformed Strata in Tripura Frontal Fold Belt of Assam and Assam Arakan Basin: Application of Sequence Stratigraphy, 3D Seismic Attributes and Inversion, #30255 (2012)
Hari Lal, N.P. Singh, A.K. Tandon
Search and Discovery.com
... is the second derivative of travel time computed along horizons or reflection events (volumetric curvature). Curvature shows the locations where...
2012
Geodynamic Characteristics and Their Effect on the Petroleum Geology Conditions for Passive Rift Basin in Central-Western African Region; #10644 (2014)
Zhi Li, Lunkun Wan, Jiguo Liu, Xiaohua Pan, Liangqing Xue, Yongdi Su
Search and Discovery.com
..., the derivative tensile force in the NE-SW direction promotes the second phase of subsidence of the basins. This phase of subsidence is also possibly strengthened...
2014
Geologic Frameworks Derived from Lightning Maps and Resistivity Volumes; #41636 (2015)
Kathleen S. Haggar, Louis J. Berent, H. R. Nelson Jr.
Search and Discovery.com
... databases are available, thus allowing the data to be easily integrated with available seismic and subsurface data. Although NSEM is a derivative...
2015
Permeability Model using Minifracture Analysis in Tight Sands of Mature Fields; #41805 (2016)
José Pajuelo, D. Escobedo, G. Moreyra
Search and Discovery.com
... Derivative 1 0.01 0.1 1 10 Time [hr] 100 1000 1 0.01 0.1 1 10 Time [hr] 100 1000 Fuente: Lote X, BU - Junio 1985 Time to observe...
2016
The Current State of U.S. and Global Crude Oil Markets, #70229 (2016).
Tom Seng
Search and Discovery.com
... energy derivative instruments to hedge their price and market risk in the future. E&P companies choosing not to develop some type of hedging program...
2016
Structural Models Constrained by Geophysical Data Provide Additional Insight to the Subsurface in Southern Colorado, U.S.A., #30500 (2017).
M. Soledad Velasco, David Alumbaugh, Maggie Baber, Joshua Poirier
Search and Discovery.com
... (background). (E)Map showing the first vertical derivative (dz1) of the RTP data with interpretation of faults (black lines), volcanic dikes (violet lines...
2017
Lightning Analysis for Mapping Faults and Identifying Exploration Sweetspots; #41987 (2017)
H. Roice Nelson, Jr.
Search and Discovery.com
... rock property and lightning attribute maps and volumes. The left map above shows the rate-of-risetime (first derivative of the Rise-Time) over...
2017
The Future of Energy and Geoscience Careers, #70263 (2017).
Chandler T. Wilhelm
Search and Discovery.com
... will show is in the public domain, or is a derivative of public domain data. The implications for geoscientists, however, are my own assertions...
2017
The Eocene Elko Basin and Elko Formation, NE Nevada: Paleotopographic Controls on Area, Thickness, Facies Distribution, and Petroleum Potential; #11102 (2018)
Christopher D. Henry
Search and Discovery.com
... on flat topography, which effectively led to a derivative interpretation of a large, contiguous basin (Solomon, 1992; Haynes, 2003; Hickey et al., 2005...
2018
Deep Convolutional Neural Networks for Seismic Salt-Body Delineation; #70360 (2018)
Haibin Di, Zhen Wang, Ghassan AlRegib
Search and Discovery.com
..., Arctangent function-based third derivative attribute for characterization of faults: Geophysical Prospecting, 65, p. 913– 925. Zhang, Y., and A. D. Halpert...
2018
Supervised Learning Applied to Rock Type Classification in Sandstone Based on Wireline Formation Pressure Data; #42539 (2020)
Jose Victor Contreras
Search and Discovery.com
... to use a well-defined nonzero derivative function, to allow the Gradient Descent to make some progress at every step and work properly. Some of the most...
2020
AAPG Eastern Section Meetings
Search and Discovery.com
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