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The AAPG/Datapages Combined Publications Database
Showing 1,682 Results. Searched 200,626 documents.
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
Transformation of Resistivity to Pseudovelocity Logs
Albert J. Rudman , Joseph F. Whaley , Robert F. Blakely , Maurice E. Biggs
AAPG Bulletin
...) using a higher order polynomial for the scale function; (2) fitting only one set of constants to the average scale function using a least-squares...
1975
Porosity Dependence on Temperature: Limits on Maximum Possible Effect
Lee P. Stephenson
AAPG Bulletin
...) are plotted versus present depth of burial in Figure 5, and fitted with least-squares regression lines. There is no significant difference...
1977
Seismic Refraction Data from Sunda Shelf
Robert E. Houtz , Dennis E. Hayes
AAPG Bulletin
... is determined from a five-point least-squares parabola. The "window" is advanced sequentially, one digitized point at a time, to the next set of five...
1984
Hydrothermics in the Wyoming Overthrust Belt
Gary W. Zielinski , , James A. Drahovzal , , Gail Moritz Decoursey , , Joseph M. Ruperto
AAPG Bulletin
...). Fig. 14. Mean annual surface temperature (Ts) vs. thermal gradient (g). Solid line is least-squares fit to data. Open symbols are measurement from...
1985
Interpreting Rock-Eval Pyrolysis Data Using Graphs of Pyrolizable Hydrocarbons vs. Total Organic Carbon (1)
F. F. LANGFORD and M. -M. BLANC-VALLERON
AAPG Bulletin
..., the least squares regression line is a statistical averaging process, and there should be a geological or other basis to ensure that each line is calculated...
1990
Three-dimensional kinematic modeling of reversible fault and fold development
Natacha Gibergues, Muriel Thibaut, Jean-Pierre Gratier
AAPG Bulletin
.... Szatmari, S. Demercian, D. Coelho, and J. A. Rici, 1993, Least-squares palinspastic restoration of regions of normal faulting: Tectonophysics, v. 221, no. 34...
2009
Integration of Magnetic, Gravity and Geologic Data in Mapping Geologic Structures: A Case Study of a part of Lafiagi [Sheet 203], Southwestern Nigeria, #41737 (2015).
Kehinde A. Olawuyi, Bankole D. Ako, Gregory O. Omosuyi, Obasanmi A. Adelusi
Search and Discovery.com
...) by solving Euler’s equations for a given index n by least-squares inversion of the data. 2D Forward Modeling and Inversion of the Aeromagnetic...
2015
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
Integrated Characterization of Carbonate Ramp Reservoirs Using Permian San Andres Formation Outcrop Analogs
C. Kerans , F. Jerry Lucia , R. K. Senger
AAPG Bulletin
... in the grainstone transform. The transforms illustrated in Figure 25 are least-squares fits to the data and have the following equations: Grainstone: k = 5.390...
1994
Role of Thermal Subsidence, Flexure, and Eustasy in the Evolution of Early Paleozoic Passive-Margin Carbonate Platforms
Gerard C. Bond, Michelle A. Kominz, Michael S. Steckler, John P. Grotzinger
Special Publications of SEPM
... for the post-rift subsidence of a passive margin (e.g., Fig. 2), using least-squares methods. The theoretical curves are exponential with a decay constant...
1989
Devonian Matrix Dolomites and Deep Burial Carbonate Cements: A Comparison Between the Rimbey-Meadowbrook Reef Trend and the Deep Basin of West-Central Alberta
Eric W. Mountjoy, Hans G. Machel, Darryl Green, James Duggan, Anthony E. Williams-Jones
CSPG Bulletin
... parameters of the unit cell were determined by entering the d-spacings (Å) of all peaks into a fitting program based on a least squares regression...
1999
Tests of Plate Tectonics: PART 1
A. A. Meyerhoff , Howard A. Meyerhoff
AAPG Special Volumes
.... The Bullard et al. and subsequent least-squares fits are meaningless, except on the scale of areas which are 4° of arc per side. Plate tectonics deals...
1974
The Geometry and Internal Architecture of Stream Mouth Bars in the Panther Tongue and the Ferron Sandstone Members, Utah, U.S.A.
Havard D. Enge, John A. Howell, Simon J. Buckley
Journal of Sedimentary Research (SEPM)
.... The parameter describing the thinning (taper) of each individual clinothem is derived from the least-squares regression line through a cross plot...
2010
Pluto 4D Monitor Two - A Second Outstanding Success
Sandra Mann, Scott Gagen
Australian Petroleum Production & Exploration Association (APPEA) Journal
... collaboration with Woodside geoscientists. Use of modern processing technologies, including least squares migration, full waveform inversion and wave...
2022
Analysis of Fremont River Strath Terraces in the Area of Capitol Reef National Park, Utah – Implications for Fluvial Landscape Evolution and the Role of Climate Forcing
James L. Eddleman, Samual C. Sorber, Thomas H. Morris, Scott D. Grimshaw, Emily Dastrup, William F. Christensen, Scott L. Morris
Utah Geological Association
..., 1994) is thought to be more than adequate for obtaining parameter estimates and was used as the default in the nonlinear least squares statistical...
2007
Submarine Slumps
David G. Moore
Journal of Sedimentary Research (SEPM)
... depths within the cores using the vane shear techniques. Strength data from these two areas were plotted against burial depth and least squares lines...
1961
Type Wells - A Physics-Blind Statistical Myth? Our RTA Driven Construction Methodology Proves Otherwise!
Sriniketh Sukumar, W. John Lee,
Unconventional Resources Technology Conference (URTEC)
..., by finding the slope of a least-squares best-fit straight line for the transient flow portion of the data immediately preceding BDF, as shown in Fig. A-5...
2021
Rapid Estimations of Dynamic Hydraulic Fracture Fronts from Cross-Well Low-Frequency Distributed Acoustic Sensing Strain-Rate Measurements
Smith Leggett, Erich Kerr, Ding Zhu, Dan Hill
Unconventional Resources Technology Conference (URTEC)
...-algorithm-for-nonlinear-least-squares-problems. Fletcher, R. 1971. Modified Marquardt Subroutine for Non-Linear Least Squares., AERE-R-6799, Atomic...
2022
Aragonitic Algae in Calcite Seas: Effect of Seawater Mg/Ca Ratio on Algal Sediment Production
Justin B. Ries
Journal of Sedimentary Research (SEPM)
...) of the algae (Table 1) were calculated as the slopes of the least-squares linear regressions through the respective data. Figure 6. Calcification by U...
2006
Organic Geochemistry in Relation to the Depositional Environments of Middle Jurassic Coal Seams, Danish Central Graben, and Implications for Hydrocarbon Generative Potential
Henrik Ingermann Petersen, Per Rosenberg, Jan Andsbjerg
AAPG Bulletin
... was done using the computer program sirius (Kvalheim and Karstang, 1987). The partial least squares regression (PLSR) method was used. In PLSR, one...
1996
CORROSION CONTROL IN THE USE OF LAKE MARACAIBO WATER FOR WATER - FLOOD PROJECTS
H. F. Finley
Asociación Venezolana de Geología, Minería y Petróleo (AVGMP)
... on the outlet side of the tower. The data are shown plotted in Figure 4. A least squares calculation gave the equation (1) (2) where O2 ml/1...
1960
Modelos de Velocidades (Optimizados) en el Caribe Colombiano [PAPER IN SPANISH] VelocityModels (Optimized) in the Colombian Caribbean
Oscar Moreno, Carlos Guerrero, Sid Tschirhart, Giuseppe Fiume, Pedro Gómez
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... Lithologic Variation”. Geophysics, Vol. XVIII, No. 2 April. Legge, J. A., Jr. and Rupnik, J. J. (1939). “Least Squares Determination of the Velocity...
2009
Insights into the depositional setting for the Gippsland Basin from modern basin-wide 3D datasets
Angus Goody, Clare Davies, Paul Rheinberg
Australian Energy Producers Journal
... and imaging algorithms over the last decade. Key technologies included joint receiver deghosting, multi-pass full waveform inversion (FWI) and least...
2024
Determination of T2 Cut-Off for Shale Reservoirs: A Case Study from the Carynginia Formation, Perth Basin, Western Australia
M. Nadia Testamanti, Reza Rezaee, Yujie Yuan, Dawei Pan
Australian Petroleum Production & Exploration Association (APPEA) Journal
... of 0.1 ms. The raw decays were later processed with the Lawson and Hanson module in Prospa software, which implements the non-negative least-squares...
2017