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The AAPG/Datapages Combined Publications Database
Showing 1,682 Results. Searched 200,636 documents.
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
Scaling the Response of Deltas To Relative-Sea-Level Cycles By Autogenic Space and Time Scales: A Laboratory Study
Lizhu Yu, Qi Li,, Kyle M. Straub
Journal of Sedimentary Research (SEPM)
...We subtract this long-term trend, estimated with a least-squares linear regression of the growth of , to analyze the influence of sea-level cycles in pe...
2017
Controls on the Geometry of Incised Valleys in the Basal Quartz Unit (Lower Cretaceous), Western Canada Sedimentary Basin
George W. Ardies, Robert W. Dalrymple, Brian A. Zaitlin
Journal of Sedimentary Research (SEPM)
... along the BAT2 trunk valley (Fig. 9). Smooth curves have been fitted to the data using the least-squares technique, to illustrate how thickness (i.e....
2002
Sedimentation and Trapping Mechanism in Upper Miocene Stevens and Older Turbidite Fans of Southeastern San Joaquin Valley, California
Bruce A. MacPherson
AAPG Bulletin
... the Stevens, the best least-squares curve of the form, Y - aX + b, is a straight line. Correlation coefficients (r), give values greater than 0.85 which...
1978
I would rather be vaguely right than precisely wrong: A new approach to decision making in the petroleum exploration and production industry
Reidar B. Bratvold, Steve H. Begg
AAPG Bulletin
... p.Longstaff, F. A., and E. S. Schwartz, 2001, Valuing American options by simulation: A simple least-squares approach: Review of Financial Studies, v. 14...
2008
From outcrop to flow simulation: Constructing discrete fracture models from a LIDAR survey
Christopher E. Wilson, Atilla Aydin, Mohammad Karimi-Fard, Louis J. Durlofsky, Amir Sagy, Emily E. Brodsky, Oliver Kreylos, Louise H. Kellogg
AAPG Bulletin
... of the scan as the distance from the scanner to the roadcut increased (Figure 4A). Once acquired, a least-squares fit of common reference points unified...
2011
Cracking, mixing, and geochemical correlation of crude oils, North Slope, Alaska
Ye Wang, Kenneth E. Peters, J. Michael Moldowan, Kenneth J. Bird, and Leslie B. Magoon
AAPG Bulletin
... Slope oils into different families based on source-related biomarker and isotopic data. In addition, Peters et al. (2008) applied alternating least...
2014
Applying carbon-isotope stratigraphy using well cuttings for high-resolution chemostratigraphic correlation of the subsurface
J. Garrecht Metzger, David A. Fike, and L. B. Smith
AAPG Bulletin
... core C1. refers to linear least-squares fit. * = one outlier (arrow) omitted from regression calculation.Another interval of possible isotopic...
2014
Electrical and fluid flow properties of carbonate microporosity types from multiscale digital image analysis and mercury injection
Jan H. Norbisrath, Gregor P. Eberli, Ben Laurich, Guillaume Desbois, Ralf J. Weger, and Janos L. Urai
AAPG Bulletin
...). This means that pores below 256 and 64 nm equivalent side length are omitted in the 5000× and 15,000× mosaics, respectively. Least-squares linear regression...
2015
Magnetic susceptibility variations in lower Paleozoic shales of the western Baltic Basin (northern Poland): A tool for regional stratigraphic correlations and the decoding of paleoenvironmental changes
D. K. Niezabitowska, J. Roszkowska-Remin, R. Szaniawski, and A. Derkowski
AAPG Bulletin
...°C–250°C temperature range) using the least-squares method. The calculations were conducted in the instruments Cureval8 software. Lithosedimentological...
2021
Application of Precise Acoustic Positioning Techniques During the Development of the Liuhua Field in the South China Sea
John D. Hughes, Nigel C. Kelland
Southeast Asia Petroleum Exploration Society (SEAPEX)
... Field Frame The ‘as-laid’ UTM positions of the Near Field frames were determined using the variation of co-ordinates, least squares technique from...
1996
Recognition Of Deltas by Fitting Trend Surfaces to Upper Pennsylvanian Sandstones in North-Central Texas
E. G. Wermund, W. A. Jenkins Jr.
Special Publications of SEPM
... and negative residuals. The line (plane) provided by the computer program is the best possible fit in the least squares sense. This means that the sum...
1970
Magnetic Anomalies of the Northern Gulf of California: Structural and Thermal Interpretations: Chapter 22: Part III. Regional Geophysics and Geology
O. Sanchez-Zamora, P. Doguin, R. W. Couch, G. E. Ness
AAPG Special Volumes
.... The slopes of the straight lines in Figure 7, fitted by least squares, yield the average depth, h, to the tops of the magnetic sources according...
1991
Clay Minerals in the Sediments of Lake Baikal: A Useful Climate Proxy
Richard Yuretich , Martin Melles , Brenn Sarata , Hannes Grobe
Journal of Sedimentary Research (SEPM)
... are not amenable to a direct statistical analysis. However, when the data are smoothed (locally weighted least-squares regression, coefficient = 0.3...
1999
Oblique Convergence During Northeast-Southwest Laramide Compression Along the East-West Owl Creek and Casper Mountain Arches, Central Wyoming
Philipp C. Molzer, Eric A. Erslev
AAPG Bulletin
... determines the directions and relative magnitudes of the principal stress axes. The least-squares algorithm of Angelier (1990), as implemented...
1995
Stratigraphic and Structural Study of Paleogene Wilcox Strata in East-Central Louisiana: Implications for Coalbed Natural Gas Exploration
Scott G. Comegys, Gary L. Kinsland, and F. Clayton Breland, Jr.
GCAGS Transactions
... electronically in PETRA® using the Highly Connected Features (Least Squares) algorithm. Posted on each map at each well are the data values relevant...
2007
Multichannel Data Acquisition and Processing
Gregory L. Smith, David A. Falvey, Raymond Shaw
Circum Pacific Council Publications
... m to en d o f data 1% T.V. FILTER Predictive deconvolutio n usin g th e Wiener-Levinso n least-squares techniqu e wa s applie d t o pre-stac k data...
1988
Stress-Dependent Permeability and Porosity of Coal
Chester R. McKee, Amar C. Bumb, Robert A. Koenig
Rocky Mountain Association of Geologists
... with the data reported to only one significant digit. Figure 1 shows the Pittsburgh seam data on a semi-log plot with a least-squares straight line through...
1988
Some Petrophysical Aspects of the Mississippian "Chat" Glick Field, Kiowa County, Kansas
Jack D. Duren
Oklahoma City Geological Society
... groups as shown in Figure 11. These calculated "m" values range from 2.24 to 2.73 with a least squares average of 2.36. The steeper slopes were...
1961
Mapping Thin Sand Reservoirs in Eastern India
U. K. Guru, M. Krishnamurty, V. C. Ramalah, E. W. Wiltse, Robin Westerman
Southeast Asia Petroleum Exploration Society (SEAPEX)
...’ with a simultaneous, multi-parameter optimisation of wavefield descriptors. Velocity, polarisation and frequency are optimised in a least-squares sense for downgoing...
1990
Late Paleozoic and Mesozoic Paleomagnetism and Tectonic Evolution of the Tarim Terrane
Fang Dajun, Chen Hanlin, Jin Guohai, Guo Yabin, Wang Zhaoliang, Tan Xiaodong, Yin Shuhang
Circum Pacific Council Publications
..., Paleomagnetology, Springer-Verlag, 308 PKirschvink, J.L., 1980, The least-squares line and plane and the analysis of paleomagnetic data, Geophys. J. R. Astr. S o c...
1990
An Interpretation of the Golden Grove Gravity High in Southern New Brunswick
V. K. Gupta, K. B. S. Burke
Atlantic Geology
... gravity high, defined in a least squares sense as has a coincident aeromagnetic high (Geological N Survey of Canada, 1960). f(X) (1) = N z (9 m=l...
1977
Reservoir characterization and associated uncertainties of a presalt carbonate field, Brazil offshore
Jaydip Guha, Hannah Wood, Martijn Blaauw, Caroline Scott, Cody Stewart, Lina Xu, Wenceslau P. Gouveia, Edward Follows, Runer Avila, Andrew Barnett, Josephine Wheeler
International Meeting for Applied Geoscience and Energy (IMAGE)
... of a least-squares reverse time migration (LSRTM) seismic data and related inversion products. Integrated Reservoir Modeling: Objectives, Approach...
2022
Results of a Gravity Survey in the Kuala Lumpur Area
C. A. Foss
Geological Society of Malaysia (GSM)
..., 1949), least squares methods (Coons et al., 1967), spectral analysis (Gupta and Ramani, 1980), and differential methods (Clark, 1969). All...
1986
Spectral hydrology: Resolution and uncertainty in multifrequency oscillatory hydraulic tomography
Jeremy R. Patterson, Michael Cardiff
International Meeting for Applied Geoscience and Energy (IMAGE)
....” In field data, the head phasors are readily extracted through FFT or least squares analysis. These observed phasors provide the necessary inputs for OHT...
2022