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The AAPG/Datapages Combined Publications Database
Showing 1,680 Results. Searched 200,293 documents.
Correlation and Regression Analysis: Part 6. Geological Methods
T. C. Coburn
AAPG Special Volumes
... the regression line. Two consequences of the least squares approach for the determination of the parameters a and b are that the sum of these residuals...
1992
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
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
Relationship of Vitrinite Reflectance to Heat-Flow History of North Sea: ABSTRACT
Richard F. Yarzab, Ian Lerche, Christopher G. St. C. Kendall
AAPG Bulletin
... heat flow, Q(t), using a nonlinear least-squares technique. As a consequence of the modeling, we conclude that vitrinite reflectance can be modeled...
1983
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: 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: 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
Application of Fractal Method for Quantifying Fault Geometry
Sigit Sukmono, Lilik Hendrajaya, Djoko Santoso
Indonesian Petroleum Association
... in Figure 3. Fractal dimension D of the Semangka fault is estimated from the slopes of straight-line least squares fit to these data and found to be D = 1.58...
1994
Abstract: Variable Depth Streamer Acquisition: Enhancing Interpretation with Broadband Marine Seismic; #90174 (2014)
R. Soubaras, R. Dowle, and R. Sablon
Search and Discovery.com
.... The joint deconvolution can be performed in a least squares sense where there is noise in the data, and can also be performed in a multichannel manner...
2014
Lithology Prediction by Extrapolating Well Data
Brian Barley, Dean Chergotis, Mai Wilson, Susan Young
Indonesian Petroleum Association
... and shale are discriminable from coal or limestone. Seismic amplitudes in uniformly processed, high quality 1991 seismic data were calibrated by least squares...
1992
Core-Calibrated Multi-Mineral Interpretation in Reservoirs with Complex Mineralogy
Mathilde Luycx, Brent Wheelock, Hanatu Kadir, Emmanuel O. Oyewole, Olabode Ijasan, Darren McLendon
Unconventional Resources Technology Conference (URTEC)
... 𝐻 ]‖ (6) 0≤ 𝑣≤ 1 𝐻𝜇 2 𝐻𝑟 𝑇 and is solved using the Bounded Variable Least Squares algorithm. By calculating 𝑣(𝜇) for each component 𝑖 of th...
2022
THE THERMAL STATE OF THE WILLISTON BASIN IN CANADA
F. W. JONES
Williston Basin Symposium
... of the sedimentary column. The gradients in the upper interval were calculated from a least squares fitted straight line through the BHT...
1991
From raw seismic data to quantitative interpretation via cloud-based FWI
Henry A. Debens
Australian Energy Producers Journal
...) it consists of iterated rounds of shortoffset least-squares FWI to build reflectivity and deep macro-model updates to match reflection moveout; (2...
2024
Offshore Positioning Systems: The Human Interface
D. F. Haines
Southeast Asia Petroleum Exploration Society (SEAPEX)
... filtering method in use gyro heading method of calculation (least squares, error triangles) Output: position coordinates (geographic...
1980
Robust joint inversion and segmentation of 4D seismic data
Juan Romero, Matteo Ravasi, Nick Luiken
International Meeting for Applied Geoscience and Energy (IMAGE)
... (Sarkar et al., 2003). Starting from commonly used regularized least-squares (LS) inversion (aka Bayesian inversion with Gaussian priors and noise – Buland...
2022
Mitigating cycle skipping in FWI through preconditioned multidimensional optimal transport
James McLeman, Tim Burgess, Tom Rayment, Victor Chua
International Meeting for Applied Geoscience and Energy (IMAGE)
..., C. C., and M. A. Saunders, 1982a, LSQR: An algorithm for sparse linear equations and sparse least squares: ACM Transactions on Mathematical Software...
2022
Reducing seismic quantitative interpretation uncertainty in complex geological environments: A case study from offshore Australia
Andrea Paxton, Lianping Zhang, Abdul Kholiq, Lee Davey, Richard Bisley, Dominic Fell, Leo Leon, James Shadlow
International Meeting for Applied Geoscience and Energy (IMAGE)
...-stack DDI in this workflow uses least-squares migration in the image domain to invert seismic data using a gradient-based optimized (GBO) algorithm...
2022
Caribbean Reef Corals Montastrea annularis and Montastrea cavernosa--Long-Term Growth Data as Determined by Skeletal X-radiography: Reef Biota
Jon N. Weber , Eugene W. White
AAPG Special Volumes
... for Montastrea annularis is derived from Type 1 least-squares linear-regression analysis in which growth rate (G) is taken as the dependent variable...
1977
A field data application of RockAVO: Data-driven, direct petrophysical inversion of prestack seismic data
Miguel Corrales, Hussein Hoteit, Matteo Ravasi
International Meeting for Applied Geoscience and Energy (IMAGE)
... function, which cannot be effortlessly minimized using standard least-squares solvers. Proximal solvers, such as the Alternating Direction Method...
2023
Lower Paleozoic Stratigraphy, Depositional Systems, and Geologic History, Needle Mountains, Colorado
John A. Campbell, David A. Gonzales
Utah Geological Association
... Paper 1321–A, 54 p. York, D., 1966, Least-squares fitting of a straight line: Canadian Journal of Physics, v. 44, p. 1079–1086. York, D., 1969, Least...
1996
Settling Velocities of Natural Sand Grains in Air
Bingquan Cui, Paul D. Komar, Jumpei Baba
Journal of Sedimentary Research (SEPM)
... by simple least-squares linear regression of the logs of the values of the measured settling rates, Wm, versus the expected rate ws for a sphere having...
1983
Shale Compaction in the Michigan Basin: Estimates of Former Depth of Burial and Implications for Paleogeothermal Gradients
Raymond Vugrinovich
CSPG Bulletin
... calculated by least squares linear regression of log (dt) and depth. Sonic transit time was determined by using the integrated transit time (ITT) curve...
1988
Stable-Isotopic Composition of a Late Eocene Archaeocete Whale, Basilosaurus cetoides, from Wayne County, Mississippi
Edwin W. Emmer, Dean A. Dunn
GCAGS Transactions
... a least-squares regression line relating oxygen isotope values of cetacean bone phosphate and sea water, based on 18O values of modern cetaceans...
1996
The Effects of Seismic Data Conditioning on Pre-Stack Simultaneous Impedance Inversion
Scott W. Singleton
GCAGS Transactions
... Extraction The first step in the inversion workflow is to extract wavelets. Here, the traditional method of calculating a least-squares shaping...
2008