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The AAPG/Datapages Combined Publications Database
Showing 1,682 Results. Searched 200,619 documents.
2D Vp modeling of the Albian-Cenomanian section using geological constraints, 3D extrapolation, and GRV uncertainty analysis of Aptian presalt reservoir: A Santos Basin example
Vitor Novellino, Alexandre Maul, María González, Fernando Freire
International Meeting for Applied Geoscience and Energy (IMAGE)
... Stratification to Detail Velocity Model Prior to Least Squares Reverse Time Migration: Journal of Applied Geophysics, 195, 104469, doi: https://doi .org/10.1016...
2024
Organic Properties and Source Rock Potential of Two Early Tertiary Shales, Beaufort-Mackenzie Basin: GEOLOGICAL NOTE
Lloyd R. Snowdon
CSPG Bulletin
... in the Toapolok O-54 coaly sample, which contains 3.55% TOC. When a least-squares, first-order regression is carried out on the solvent extractable hydrocarbon...
1987
Pore Facies of Smackover Carbonate Reservoirs in Southwest Alabama
David C. Kopaska-Merkel , Steven D. Mann
GCAGS Transactions
...-in permeability plot in which the slope of the least-squares regression line is low (Fig. 8). Pore throat shapes are variable, but sheetlike throats are most...
1991
Chapter 13: The Giant Mero Oil Field: Geological and Petrophysical Settings of One of the Largest Pre-Salt Fields of the Santos Basin, Southern Brazil
E. Petersohn, R. Morelatto, C. M. A. Batista, J. C. S. Vital
AAPG Special Volumes
... temperature of 92°C (Schlumberger, 2009). This information was corroborated by a linear least squares regression on log–log domain of true resistivity...
2021
Chapter 14 (Case Histories of Three-Dimensional Seismic Surveys)—Case History 2: Three-Dimensional Seismic Monitoring of an Enhanced Oil Recovery Process
Robert J. Greaves, Terrance J. Fulp
AAPG Special Volumes
... relationship for postburn data. Using least-squares estimation, lines were fitted through the data points and forced through the origin. The slope...
2011
Sediment Composition and Hydrography in Six High-Gradient Estuaries of the Northwestern United States
Curt Peterson, Kenneth Scheidegger, Paul Komar, Wendy Niem
Journal of Sedimentary Research (SEPM)
... range widely in mean fluvial-discharge rates and mean tidal-prism volumes (Table 1). A least-squares linear regression performed on estuarine drainage...
1984
Eolian Suspension Above the Saltation Layer, the Concentration Profile
J.A. Gillies, L. Berkofsky
Journal of Sedimentary Research (SEPM)
.... The normalized concentration profile has more commonly been modeled as a power law. Least-squares regression was used to fit both the logarithmic...
2004
Deconvoluting Mixed Petroleum and the Effect of Oil and Gas-Condensate Mixtures on Identifying Petroleum Systems; #42564 (2020)
Kenneth Peters, Andrew Murray
Search and Discovery.com
... of endmembers, including oil and gas condensate (<3,000 and >3,000 scf/bbl, respectively), which we deconvoluted by alternating least squares regression...
2020
Land, Marine and Transition Zone Seismic Operations in PPL 123, Papua New Guinea
Alan G. Fenwick, Robert J. Paul
Papua New Guinea (PNG) Petroleum Convention Proceedings
...° and greater than 150° introduce unacceptable error into the least squares trilateration solution. By necessity, numerous base stations needed...
1993
New U-Pb Zircon and 40AR/39AR Age Constraints on the Late Mesozoic to Cenozoic Plutonic Record in the Western San Juan Mountains
David A. Gonzales
Rocky Mountain Association of Geologists
... Society of America Bulletin, v. 108, no. 7, p. 757–767. York, D., 1969, Least squares fitting of a straight line with correlated errors: Earth...
2015
Magnetic-Fabric Analysis As A Tool To Constrain Mechanisms of Deep-Water Mudstone Deposition In the Marnoso Arenacea Formation (Miocene, Italy)
Eleonora Dall'olio, Fabrizio Felletti, Giovanni Muttoni
Journal of Sedimentary Research (SEPM)
... was then fit to the data by means of least-squares analysis, and errors were calculated using multivariate statistics (Jelinek 1978) with the software Anisoft...
2013
Compositional Variation and Sequence in the Miocene Monterey Formation, Santa Barbara Coastal Area, California
Caroline M. Isaacs
Pacific Section SEPM
... of the Monterey Formation. The correlation coefficient for linear regression by the least squares method is -0.8 for silica, +0.8 for detrital minerals, and +0.6...
1983
An Analysis of Joint Development in Thick Sandstone Beds of the Elk Basin Anticline, Montana-Wyoming
Terry Engelder, Michael R. Gross, Paul Pinkerton
Rocky Mountain Association of Geologists
... in Figure 7a, there is scatter about the least-squares fit line representing an FSI in the backlimb of Elk Basin. Aside from scatter arising from...
1997
Geologic Interpretation of Gravity Anomalies of Northeastern Utah
James T. Smith, Kenneth L. Cook
Utah Geological Association
... anomaly in the southern flank of the Uinta Basin. The high is at least 65 mi in length and extends eastward to the edge of the map, and continues...
1985
Absence of evidence of climate-driven cycles in Carboniferous deposits of Joggins, Nova Scotia, Canada: influence of salt withdrawal tectonics on deposition and pedogenesis
Yohan Letourmy, Steven G. Driese, Justin R. Sims
Journal of Sedimentary Research (SEPM)
... least-squares methods. The value of n is known as the order of the TAR model and represents the number of immediately preceding FACs to be used...
2021
Changes in soils and terrestrial landscapes of the Appalachian Basin (Conemaugh, Monongahela, and Dunkard groups), U.S.A., at the onset of the late Paleozoic climate transition
Daniel I. Hembree
Journal of Sedimentary Research (SEPM)
... on the observed data. A diffraction model was fitted to the measured pattern by nonlinear least-squares optimization. Modeling parameters include...
2024
Geochemistry and Origin of Middle Miocene Volcanic Rocks from Santa Cruz and Anacapa Islands, Southern California Borderland
Peter W. Weigand
Pacific Section SEPM
... equations by least-squares approximation. Science 163:926-927. Butler, J. C. and A. Woronow. 1986. Discrimination a m o n g t e c t o n i c s e t t i n g...
1994
Varve Formation in the Central Gulf of California: A Reconsideration of the Origin of the Dark Laminae from the 20th Century Varve Record: Chapter 30: Part V. Physical Oceanography, Primary Productivity, Sedimentology
Tim R. Baumgartner, Vicente Ferreira-Bartrina, Pedro Moreno-Hentz
AAPG Special Volumes
... different stations were standardized independently. Table 3 summarizes the statistics of the least squares fits obtained by linear regression of the total...
1991
Origin and Source-Rock Potential of the Sharon Springs Member of the Pierre Shale, Colorado and Kansas
Donald L. Gautier, Jerry L. Clayton, Joel S. Leventhal, Nancy J. Reddin
Rocky Mountain Association of Geologists
... of the linear least-squares line shown in Figure 4. According to this plot, the Sharon Springs samples contain predominantly Type II organic matter...
1984
Exploration for Oil Accumulations in Entrada Sandstone, San Juan Basin, New Mexico
Richard R. Vincelette , William E. Chittum
AAPG Bulletin
... to determine the base o the sand. The base was then smoothed, using a least-squares fit, and the top of the Entrada adjusted accordingly...
1981
Interpretation of Crustal Structure from Regional Gravity Anomalies, Ouachita Mountains Area and Adjacent Gulf Coastal Plain
J. M. Kruger , G. R. Keller
AAPG Bulletin
... analysis of least squares polynomial surfaces with application to gravity data in the Pedregosa basin area: PhD dissertation, University of Texas...
1986
Marine Geology of Sohm Basin, Canadian Atlantic Margin
Cynthia J. Ebinger , Brian E. Tucholke
AAPG Bulletin
..., 1982). Prior to transformation to the spectral domain, we used a least-squares linear regression to remove long-wavelength trends, interpolated data...
1988
Geostatistical three-dimensional modeling of oolite shoals, St. Louis Limestone, southwest Kansas
Lianshuang Qi, Timothy R. Carr, Robert H. Goldstein
AAPG Bulletin
... using a least-squares algorithm, which tends to produce connected features as opposed to disconnected closures. All contours were smoothed using grid...
2007
Integrated stratigraphic and geochemical analysis of organic-rich intervals of the Lewis Shale in the eastern Washakie Basin, Wyoming
Jane S. Hearon, Paul C. Hackley, Justin E. Birdwell
Rocky Mountain Association of Geologists
...) with default settings (sensitivity to pure components = 50, maximum alternating least squares iterations = 100). The full pyrograms were used, including the 51...
2025
The Hillabee metavolcanic complex and associated rock sequences: guidebook for the 17th annual field trip. Road Log.
James F. Tull, Stephen H. Stow
Alabama Geological Society
.... . Petrology, v 12, p. 1 -65. Petrology, v. .12, p. 1-65. Wright, T.L, an Doherty, P.C., 1970 A linear programming and least squares computer method...
1979