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The AAPG/Datapages Combined Publications Database
Showing 1,680 Results. Searched 200,357 documents.
ABSTRACT: Computer-Aided Geometric Modeling of Geologic Surfaces, by H. Schaeben, S. Auerbach; #91003 (1990).
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1990
Abstract: The George & Stiles Method of Determining Porosity Cutoffs: A Computer Program, by K. C. Powers and J. J. Reeves; #91004 (1991)
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1991
Distribution of Hydrocarbons in Three Dimensions: ABSTRACT
John C. Davis
AAPG Bulletin
... is a least-squares expression of the relation between the dependent variable and the spatial coordinates. In practice, a polynomial expansion...
1969
Abstract: Seismic Data Inversion Using Geologic Constraints, by R. T. Vest; #91018 (1992).
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1992
ABSTRACT: Transformation of Geochemical Log Data to Mineralogy Using Genetic Algorithms, by J. H. Fang, C. L. Karr, D. A. Stanley; #91020 (1995).
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1995
KOALA--Minicomputer Log Analysis System for Geologists: ABSTRACT
John H. Doveton, Harold W. Cable
AAPG Bulletin
..., or least-squares matrix algorithms, depending on the degree of determinancy prescribed by the number of components as related to number of logs...
1979
Gravity Investigation of Suspected Silurian Reef in North-Central Ohio: ABSTRACT
William Owen Bolla
AAPG Bulletin
... was set at 200 ft (61 m) to insure detection of the anomaly. The gravity residual was calculated by least squares analysis on an IMB 370 computer...
1981
Coal Quality and Overburden Reconstruction of Upper Cretaceous and Tertiary Coal-Bearing Formations, Plains Area, Alberta: ABSTRACT
John R. Nurkowski
AAPG Bulletin
... investigated. A least-squares regression analysis of all data, regardless of formation, of calorific value, CV (Kcal/kg), corrected to a moist mineral matter...
1982
Tuscarora Sandstone (Silurian), Central Pennsylvania: Preliminary Quantitative Grain Shape Analyses of Cotter's (1982) Facies--Fluvial, Estuarine, Beach, and Marine(?) Shelf: ABSTRACT
James M. Parks, Robert A. Gallagher, Edward Cotter
AAPG Bulletin
... a calculated "center of gravity" to a least squares best fit with an empirical "reference shape"; and 36 equal-angle spaced radials are calculated...
1982
Marine Geophysical Measurements in Central Puget Sound, Washington: ABSTRACT
Mark L. Holmes, J. D. MacQueen, R. E. Sylwester
AAPG Bulletin
... the Cascade Range foothills to Hood Canal. North of this gradient is a -129 mgal Bouguer gravity minimum centered over Lake Washington. A least squares...
1982
Crustal Structure of South Florida Bank Derived from Ocean Bottom Seismometer Refraction Profiles: ABSTRACT
Joseph O. Ebeniro, William P. O'Brien, Jr., Subir K. Chatterjee
AAPG Bulletin
... arrival picks were made and least squares lines were fitted to the picks to obtain the apparent velocities and intercept times for the layers. Using...
1984
Sequential Restoration and Unstraining of Structural Cross Sections: Applications to Extensional Terranes
S. Gregg Erickson, Stuart Hardy, and John Suppe
AAPG Bulletin
... block produce a least-squares minimized best fit. After attaining a best fit of rigid elements, continuity is regained by moving initially coincident...
2000
Sequential restoration and unstraining of structural cross sections: Applications to extensional terranes: Reply
S. Gregg Erickson, Stuart Hardy, John Suppe
AAPG Bulletin
... is used and is referred to Eulerian, rotated coordinates. A rotation introduced by this strain exists in addition to the least-squares rotations...
2002
Abstract: Near Surface Characterization Using TDEM Over Marmul Area, South Oman, by A. Al-Shukeili, H.M. El-Kaliouby, S. Mahrooqi, and A.S. Al-Ismaily, #90188 (2014)
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2014
Abstract: Reverse Time Adjoint and Reverse Time Inverse Migration, by H. Liu andY. Luo, #90188 (2014)
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2014
ABSTRACT: Assessment of In-Situ Gas Saturation and Permeability From Logs in the Hugoton Field Based on the Physics of Mud-Filtrate Invasion; #90048 (2005)
Carlos Torres-Verdin, Faruk O. Alpak, Bovan George, Ray Sorenson, Grant Robertson
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... variations of gas saturation away from the borehole wall. A least-squares constrained optimization method is employed to solve the inverse problem. Array...
2005
ABSTRACT: 1-D Inversion and Analysis of Marine Controlled-Source Electromagnetic Data; #90061 (2006)
Niels B. Christensen, Kevin Dodds, and Ian Bulley
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.... Inversion is carried out with multi-layer models and L1-optimization and with 4-layer models in the least-squares sense. A general analysis of the resolution...
2006
Abstract: Image Enhacement After Migration; #90174 (2014)
John C. Bancroft, Thais Guirigay, and Helen Isaac
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.... The second reason for deconvolution after migration is provide by Least Squares Migration (LSM). LSM provides a true inversion of the imaging process...
2014
Abstract: Statics and Trace Regularization; #90211 (2015)
Robert Ferguson
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... of seismic data is investigated by treating wavefield extrapolation as a least-squares inversion problem. Weighed, damped leastsquares is then used...
2015
Abstract: STRUCTURAL ANALYSIS OF FRACTURE AND VEIN VARIATIONS NEAR FAULTS IN UTICA BLACK SHALE, MOHAWK VALLEY, NEW YORK STATE; #90249 (2016)
Alex O'Hara
Search and Discovery.com
... bedrock through the use of multilinear multivariate and partial least squares statistical analyses. These characteristics include average fracture...
2016
Abstract: Case Study of Advanced Seismic Imaging to Illuminate Low Reflectivity Carbonate Reservoirs in Offshore Abu Dhabi, UAE; #91204 (2023)
Mohamed Mahgoub, Khalid Obaid, Oleg Khakimov, Saif Al Mesaabi
Search and Discovery.com
... Least Squares Migration improved the low frequency stability and AVA response of the final data. In this publication we present the workflow...
2023
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EUR Assessment of Unconventional Assets Using Machine Learning and Distributed Computing Techniques
Zhenyu Guo, Chaohui Chen, Guohua Gao, Richard Cao, Ruijian Li, Chunlei Liu
Unconventional Resources Technology Conference (URTEC)
..., 2016. Cortes, C., and Vapnik, V. 1995. Support-vector networks. Machine learning, 20(3), 273-297. De Brabanter, K. 2011. Least squares support vector...
2017
Next-generation resolution through multiparameter FWI imaging
Tom Rayment, James McLeman, Karen Dancer, Tim Burgess
International Meeting for Applied Geoscience and Energy (IMAGE)
.... This least-squares imaging solution uses primaries, multiples and ghosts to deliver higher-resolution images than traditional imaging algorithms...
2022
Demultiple for Wide-Tow Broadband Acquisition in a Shallow Water Environment: A Case Study from the NW Shelf, Australia
Mike Hartley, Shuo Ji, Alex Browne
Petroleum Exploration Society of Australia (PESA)
... is an important step in multiple removal. The flexibility of frequency-dependent least squares global adaption, used in conjunction with the accuracy of curvelet...
2016