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The AAPG/Datapages Combined Publications Database
Showing 1,463 Results. Searched 196,121 documents.
The Age of the North Mokka Anticline, Axel Heiberg Island, Canadian Arctic Archipelago: an Application of the Paleomagnetic Fold-Test
K.C. Jackson, H.C. Halls
CSPG Bulletin
... and Its Mineral Deposits. Geological Association of Canada, Special Paper 20, p. 457-486. Kirschvink, J.L. 1980. The least-squares line and plane...
1985
Problematical Petrophysical Characteristics of the Smackover at Bayou Middle Fork Field, Claiborne Parish, Louisiana
James R. Turner
GCAGS Transactions
... of points and to compensate for the averaging effect of down-hole porosity tools over their window of resolution. A least squares line through the data shows...
1983
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
Magnetic Stratigraphy of the Upper Miocene (Wishkahan) Empire Formation, Coos County, Oregon
Donald R. Prothero, Jordan N. Lau, John M. Armentrout
Pacific Section SEPM
...-single-domain grains. After overprinting had been removed, a stable direction was determined using the least squares method of Kirschvink (1980...
2001
Magnetic Stratigraphy and Land Mammal Biochronology of the Nonmarine Facies of the Pliocene San Diego Formation, San Diego County, California
Hugh M. Wagner, Bradford O. Riney, Thomas A. Deméré, Donald R. Prothero
Pacific Section SEPM
... for each sample were determined using the least squares method of Kirschvink (1980) and averaged using Fisher (1953) statistics. Results are shown...
2001
Magnetic Stratigraphy of the Upper Middle Eocene (Ulatisian-Narizian) Humptulips Formation, Grays Harbor County, Washington
Donald R. Prothero, John M. Armentrout, Paul Pearson
Pacific Section SEPM
... was summarized using the least squares method of Kirschvink (1980). All three vectors from 100 DECLINATION SITES m 180 feet 270 0 90 180 INCLINATION...
2001
Upper Crustal Structure Derived from Seismic Refraction Experiments: Grand Banks of Eastern Canada
I. Reid, C.E. Keen
CSPG Bulletin
... equations which can be solved for all ai and the refractor velocity, Vr. Because there are more equations than unknowns, the least-squares method is used...
1988
Marine Sediments North of Scripps Submarine Canyon, La Jolla, California
C. Stanley Wimberley
Journal of Sedimentary Research (SEPM)
.... The decrease in diameter from the surf zone outward (except for Class C) is correlative with the increase in depth according to the least squares equation...
1955
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
Improvements to Formation Evaluation, Almond Formation, Green River Basin, Wyoming
William P. Iverson, Thomas L. Dunn, Ronald C. Surdam
Wyoming Geological Association
.... Least-squares lines are fit through each dataset, excluding the siltstone data points at less than 5% porosity. Note that the slope of these lines...
1995
Resource Assessment and Profitability from Discovery Rate Forecasting
Konstantinos Zorbalas, Rudy E. Rogers
GCAGS Transactions
... of the discovery process and prices of oil and gas: Mathematical Geology, v. 20, p. 939-953. Marquardt, D. W., 1963, An algorithm for least-squares estimation...
1993
Stratigraphic Controls on Reservoir Strata: A Comparison of Fluvial and Tidal Reservoirs in the Almond Formation, Coal Gulch, Wamsutter, Echo Springs and Table Rock Fields, Washakie Basin, Wyoming
B. W. Horn, T. A. Cross, J. A. Hornbeck, M. Vielma, M. Zavala
Wyoming Geological Association
... of potential reservoir targets. One useful method is a partial least squares regression (PLS) algorithm that examines multiple seismic attributes...
2001
Structure and Evolution of North Choctaw Ridge Field, Alabama, a Salt-Related Footwall Uplift Along the Peripheral Fault System, Gulf Coast Basin
Jiafu Qi , Jack C. Pashin , Richard H. Groshong, Jr.
GCAGS Transactions
.... End_Page 352------------------------ Group (KJcv, Fig. 5) fall on a straight line having a least-squares best-fit of h = -(1/3.096)S -13.51...
1998
Record of Event Sedimentation in Mississippi Sound
Samuel J. Bentley, Yoko Furukawa, W. Chad Vaughan
GCAGS Transactions
... and bottom of a core and a is the attenuation coefficient for the porosity profile, derived from a least-squares fit to core data. Results Physical...
2000
Quantitative Characterization of Deformation and Damage in Shale Under Compression Utilizing Digital Image Correlation
Fatick Nath, Edgardo Aguirre, Gabriel Aguirre, Jose L. Perez, Cesar Netro, Flavio Borjas, Valeria Limon
Unconventional Resources Technology Conference (URTEC)
...., Asundi, A., Xie, H., Gao, J., 2009. Digital image correlation using iterative least squares and pointwise least squares for displacement field...
2022
Natroalunite in Upper Cretaceous Sedimentary Rocks, North-Central Texas
Clarence S. Ross , Harlan R. Bergquist , Watson H. Monroe , Joseph J. Fahey , Malcolm Ross
Journal of Sedimentary Research (SEPM)
.... 1595-1607. EVANS, H. T., JR., APPLEMAN, D. E., AND HANDWERKER, D. F., 1963, The least squares refinement of crystal End_Page 1164...
1968
Production Optimization of CO2 Huff-n-Puff Process in Unconventional Oil Reservoirs with Effects of Gas Relative Permeability Hysteresis, Geomechanics, and Capillary Pressure
Sardar Asadov, Caner Karacer, Mustafa Onur
Unconventional Resources Technology Conference (URTEC)
... and the iterative least-squares support regression (LSSVR) proxy method are employed and compared. The optimization (or design) variables could be any...
2024
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
A New Perspective to Shallow Water Flow (SWF) and Sinking Well-Head Preventions in Deep Water
Selim Simon Shaker
GCAGS Transactions
... in reference to subsea. The least squares fit for all the sand data measurement are linear with R2 values of 0.99 (Figs. 7 and 8). This is in agreement...
2015
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
Economics of Drilling for Cretaceous Oil on East Flank of Denver-Julesburg Basin
J. J. Arps , T. G. Roberts
AAPG Bulletin
.... Since the points seemed to indicate a well established trend, an average straight line was computed by the method of least squares for the apparent...
1958
Geological Factors Influencing Porosity Estimates From Velocity Logs
Roberto Sarmiento
AAPG Bulletin
..., travel time, shaliness, and depth. They were fitted to multi-dimensional equations by the method of least squares. The results are equations relating...
1961
Iron Sulfides in Pleistocene Deep Black Sea Sediments and Their Paleo-Oceanographic Significance: Geochemistry
Robert A. Berner
AAPG Special Volumes
... are on a CaCO3-free basis. Straight line represents least-squares fit for gray sediment. Table 1. Chemical Data for Core 1464K Table 2. Chemical Data...
1974
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