Welcome to the new Datapages Archives
Datapages has redesigned the Archives with new features. You can search from the home page or browse content from over 40 publishers and societies. Non-subscribers may now view abstracts on all items before purchasing full text. Please continue to send us your feedback at emailaddress.
AAPG Members: Your membership includes full access to the online archive of the AAPG Bulletin. Please login at Members Only. Access to full text from other collections requires a subscription or pay-per-view document purchase.
Welcome to the new Datapages Archives
Search Results > New Search > Revise Search
The AAPG/Datapages Combined Publications Database
Showing 1,682 Results. Searched 200,621 documents.
Graphic Correlation of a Frasnian (Upper Devonian) Composite Standard
Gilbert Klapper, William T. Kirchgasser, John F. Baesemann
Special Publications of SEPM
... introduced the technique of graphic corre lation he used is modified form of least squares regression That he favored unequal weighting of biostratigraphic...
1995
Quantifying the Mechanisms Contributing to Surface Relaxation of Protons in Kerogen Pores of Organic-Rich Mudrocks
Saurabh Tandon, Zoya Heidari, Archana Jagadisan
Unconventional Resources Technology Conference (URTEC)
... signal using a least squares curve fitting method (Aster et al. 2005). We used the Inversion recovery with CPMG sequence (Carr and Purcell, 1954; Coates...
2018
Dolomitization of Mississippian Carbonates in the Shell Waterton Gas Field, Southwestern Alberta: Insights from Paleomagnetism, Petrology and Geochemistry
Michael T. Lewchuk,, Ihsan S. Al-Aasm,, David T.A. Symons, Kevin P. Gillen
CSPG Bulletin
... components were obtained using the principal component or least-squares fitting method of Kirschvink (1980). Most components were defined over three or more...
1998
Regional Heat Flow Pattern and Lithospheric Geotherms in Northeastern British Columbia and Adjacent Northwest Territories, Canada
Jacek A. Majorowicz, Alan M. Jessop, Larry S. Lane
CSPG Bulletin
... the least squares fit of the data, forced through the ground temperature (0°C). Temperatures outside the envelope can be considered anomalous (Fig. 4...
2005
Influence of Depositional Environment and Diagenesis on Regional Porosity Trends in the Lower Cretaceous "J" Sandstone, Denver Basin, Colorado
Debra K. Higley, James W. Schmoker
Rocky Mountain Association of Geologists
... depth (Fig. 6). The r for the least-squares fit of the log of porosity to depth is -0.79 for the porosity database and -0.69 for the channel-sandstone...
1989
Seismic Inversion Resolution Enhancement With (3S) Spectral Blueing, Spectral Balancing, and Stochastic Inversion on Fluvio Deltaic Environment
Aji Darma Maulana, Nine Safira, Ongki Ari Prayoga, Egie Wijaksono, Alit Ascaria
Indonesian Petroleum Association
... achieved by least squares. Therefore, this framework is not suitable for handling highly nonlinear inverse problems such as pre-stack seismic inversion...
2022
Rhythmic Linear Sand Bodies Caused by Tidal Currents
Theodore Off
AAPG Bulletin
... on the graph was drawn by the "least squares" method. If the points farthest from the line are thrown out (which might be justified on the basis that other...
1963
A 5 My Chronology of Carbonate Platform Margin Aggradation, Southwestern Little Bahama Bank, Bahamas
Donald F. Mcneill , G. Michael Grammer , Stuart C. Williams
Journal of Sedimentary Research (SEPM)
.... KIRSCHVINK, J.L., 1980, The least-squares line and plane and the analysis of palaeomagnetic data: Geophysical Journal of the Royal Astronomical Society, v...
1998
Poisson Processes of Carbonate Accumulation on Paleozoic and Holocene Platforms
Bruce H. Wilkinson , Carl N. Drummond , Nathaniel W. Diedrich , Edward D. Rothman
Journal of Sedimentary Research (SEPM)
..., and coincides almost exactly with the least-squares regression through the data. End_Page 342------------------------ where T is total platform area...
1999
Age and Origin of Albian Glauconites and Associated Clay Minerals Inferred from a Detailed Geochemical Analysis
Davy Rousset,, Sylvie Leclerc, Norbert Clauer, Joel Lancelot, Michel Cathelineau, Jean-Francois Aranyossy
Journal of Sedimentary Research (SEPM)
...). Isochron ages were calculated using linear weighted least-squares regression (Taylor 1997). The term "weighted" in this regard means that uncertainties...
2004
Climatic Conditions and Hydrological Change Recorded in a High-Resolution Stable-Isotope Profile of a Recent Laminated Tufa on a Subtropical Island, Southern Japan
Akihiro Kano, Risa Hagiwara, Tatsuya Kawai, Masako Hori, Jun Matsuoka
Journal of Sedimentary Research (SEPM)
...-term trend for a decrease in δ18Oc (Fig. 3) translates to a long-term increase in water temperature. The line generated by the least-squares method...
2007
Pre-Cretaceous Rocks of Northwestern Honduras: Basement Terrane in Sierra de Omoa
Gregory S. Horne , George S. Clark , Paul Pushkar
AAPG Bulletin
.... York, D., 1966, Least squares fitting of a straight line: Canadian Jour. Physics, v. 44, p. 1079-1086. Zoppis Bracci, L., 1957, Estudio geologico de la...
1976
Gravitational Compaction, A Neglected Mechanism in Structural and Stratigraphic Studies: New Evidence from Mid-Continent, USA
S. Parker Gay, Jr.
AAPG Bulletin
... (Figure 8). A least-squares straight-line fit to this plot reveals a 5.2-ft (1.6-m) increase in Davis thickness for each 100-ft (30-m) thickness...
1989
Chemometric identification of crude oil families and deconvolution of mixtures in the surrounding Niuzhuang sag, Bohai Bay Basin, China
Zhao-Wen Zhan, Xiao-Hui Lin, Yan-Rong Zou, Zheng Li, and Ping’an Peng
AAPG Bulletin
... least-squares. As a minor contributor, EM1 has an average value of 10%. As the main contributors, EM2 and EM3 average 53% and 37%, respectively. Oil...
2020
Transactions of the West Texas Geological Society’s Symposium Economics and the Petroleum Geologist Midland, Texas
G. R. Gaige
West Texas Geological Society
... by a least-squares solution for the interval (6. 5 - 17. 5) × 108 ft, are b = -4.609 × 10–10/ft (dQ/dh)0 = 88.9 bbls/ft. With these constants, equation...
1966
Evaluation of Conservative Tracers for Coal Seam Reservoirs
Deasy Heryanto, Luke Connell, Nicholas Lupton, Jun Du, Michael Camilleri
Unconventional Resources Technology Conference (URTEC)
... flood observations. The CXTFIT model implemented in EXCEL presented by Tang et al (2010) was used in this work. This model implements a least squares...
2019
Case Studies - Application of Resistivity-Tool-Response Modeling for Formation Evaluation - Archies Series No. 2
Hezhu Yin
AAPG Special Volumes
... least-squares minimization approach. The number of iterations was set to five, which resulted in a relative error between ILD and ILD_C of less than 3...
2011
AAPG Archie Series, No. 1, Chapter 12: Low-resolution Techniques
Q. R. Passey, K. E. Dahlberg, K. B. Sullivan, H. Yin, R. A. Brackett, Y. H. Xiao, and A. G. Guzmán-Garcia
AAPG Special Volumes
... and shale fractions) that are obtained in a preliminary step of the VLSA analysis by a least-squares optimization procedure. The standard deviation, minimum...
2006
Method to Produce Grain-Scale Digital Images of Large Experimental Sedimentary Deposits and Other Imperfectly Flat Stratigraphy
Jim Mullin, Chris Ellis
Journal of Sedimentary Research (SEPM)
... positioning and a simple least-squares fitting routine (one which does not morph image dimensions) could handle slight errors in camera location without...
2008
Learned coupled inversion for carbon sequestration monitoring and forecasting with Fourier neural operators
Ziyi Yin, Ali Siahkoohi, Mathias Louboutin, Felix J. Herrmann
International Meeting for Applied Geoscience and Energy (IMAGE)
... interpretation risk: Cambridge university press. Ayeni, G., and B. Biondi, 2010, Target-oriented joint least-squares migration/inversion of time-lapse...
2022
PETROPHYSICS OF THE MORROW FORMATION, SOUTHEASTERN NEW MEXICO
GEORGE A. HILLIS
Fort Worth Geological Society
.... The plotted data generate a gently curving, almost linear plot; the two lines are the least squares power-curve-fit lines for the data.As geologists, we...
1985
Application of the Global Positioning System to PNG Petroleum Exploration
N. C. Talbot, G. J. Carman
Papua New Guinea (PNG) Petroleum Convention Proceedings
... and repair cycle slips. Double Difference Float solution. Phase m easur ements are differenced between stations and satel lites and a least squares solution...
1990
Methodology for Correcting Bottomhole Temperatures Acquired from Wireline Logging Measurements in the Onshore U.S. Gulf of Mexico Basin to Characterize the Thermal Regime of Total Petroleum Systems
Lauri A. Burke, Ofori N. Pearson, Scott A. Kinney, Janet K. Pitman
GCAGS Journal
... for thermal maximums, by depth, as follows. First, a trendline gradient for BHT was determined using least squares analysis. Second, each population...
2018
A Versatile Windows Based Multi-Electrode Acquisition System for DC Electrical Methods Surveys
Douglas D. Werkema, Jr., Estella Atekwana, William Sauck, Johnson Asumadui
Environmental Geosciences (DEG)
.... 34–51). Fort Worth, TX: National Well Water Association. Loke, M. H., and Barker, R. D. (1996a). Rapid least-squares inversion of apparent...
1998
Mapping Rock-Property Changes and Fluid Migration Due to Hydraulic Fracturing
Jyoti Behura
Unconventional Resources Technology Conference (URTEC)
... 6. The gradient of the least-squares objective function is efficiently computed using the adjoint-state method described in Tromp et al. (2005); Askan...
2020