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The AAPG/Datapages Combined Publications Database
Showing 3,665 Results. Searched 200,621 documents.
Lithofacies identification in cores using deep learning segmentation and the role of geoscientists: Turbidite deposits (Gulf of Mexico and North Sea)
Oriol Falivene, Neal C. Auchter, Rafael Pires de Lima, Luuk Kleipool, John G. Solum, Pedram Zarian, Rachel W. Clark, and Irene Espejo
AAPG Bulletin
... consuming, prone to individual bias or human error, and requires specialized knowledge. To address these challenges, we test the application...
2022
Abstract: Azimuthal Fourier Coefficient Elastic Inversion; #90174 (2014)
Benjamin Roure and Jon Downton
Search and Discovery.com
... but using a combination of Fourier Coefficients removes that bias, along with estimating an unambiguous symmetry axis. The azimuthal elastic inversion...
2014
The Importance of Bedding [and Borehole] Orientation When Looking for Fractures; #40679 (2010)
Charles R. Berg and Andrew Newson
Search and Discovery.com
... and Fracture planes Relative Amplitude Introducing Attenuation (1 minus Relative Amplitude) Correcting for Bias (Priest, 1993) Examples...
2010
Latitudinal Controls on Stratigraphic Models and Sedimentary Concepts, #41424(2014).
Allard W. Martinius, Carmen M. Fraticelli, Paul Markwick, John R. Suter
Search and Discovery.com
... application of them introduce a hidden bias towards low latitude systems. As a result, using these familiar concepts and models in high latitude systems can...
2014
An Updated Semivariogram Atlas for Carbonate Reservoirs Impact on Geological Models and Dynamic Model Production Forecasts, #42443 (2019).
W. Scott Meddaugh,
Search and Discovery.com
..., and Human Bias (SPE Paper 175009), 2015 SPE Annual Technical Conference, Houston, September 2015 Meddaugh, W. Scott, Meddaugh, Andrew J., 2018...
2019
Natural Fractures in the Niobrara Formation, Boulder to Lyons, Colorado
Michael D. Collins, Stephen A. Sonnenberg
Rocky Mountain Association of Geologists
... to reduce sampling bias (Mauldon et al., 2001; Rohrbaugh et al., 2002) and were oriented such that north is facing up. The fracture intersections...
2014
Taphonomic differences in molluscan shell preservation in freshwater environments from the Southeastern Pampas, Argentina
Eleonor Tietze, Claudio G. De Francesco
PALAIOS
... factors (e.g., durability, dead shell production rate) can bias taxa abundances in the fossil assemblage through differential preservation (Powell et...
2014
PERSISTENCE OF EXTERNAL ANATOMY OF SMALL CRUSTACEANS IN A LONG TERM TAPHONOMIC EXPERIMENT
ELENA NAIMARK, MARIA KALININA, NATALIA BOEVA
PALAIOS
... et al. 2009) react chemically with sediment particles and bias chemical and mineralogical analyses of the sediment and the remains themselves...
2018
PREDATION-FACILITATED PRESERVATION OF ECHINOIDS IN A TROPICAL MARINE ENVIRONMENT
CARRIE L. TYLER, TROY A. DEXTER, ROGER W. PORTELL, MICHAŁ KOWALEWSKI
PALAIOS
...fied on dead tests collected from the study area. The exceedingly high drilling frequency in the death assemblage points to a bias towards preferential...
2018
Stegosaur track assemblage from Xinjiang, China, featuring the smallest known stegosaur record
Lida Xing, Martin G. Lockley, W. Scott Persons, Hendrik Klein, Anthony Romilio, Donghao Wang, Miaoyan Wang
PALAIOS
... of small tracks could be ‘‘attributed to a general preservational bias in favor of large tracks rather than a biological signal.’’ Nevertheless...
2021
Batholiths are bullies: arc-unroofing trends in detrital zircon fertility and morphology revealed through CT analysis, central California, U.S.A.
Jacqueline J. Epperson, Matthew A. Malkowski, Richard A. Ketcham, Glenn R. Sharman
Journal of Sedimentary Research (SEPM)
..., Resentini, A., and Garzanti, E., 2016, Hydraulic sorting and mineral fertility bias in detrital geochronology: Gondwana Research, v. 31, p. 1–19. Mapes...
2025
Patterns of Phanerozoic Reef Crises
Erik Flügel, Wolfgang Kiessling
Special Publications of SEPM
... remain database entries Kiessling and fairly constant with increasing database entries (Kiessling and fairly constant with bias exists for Hugel...
2002
Merging Physics and Data-Driven Methods for Field-Wide Bottomhole Pressure Estimation in Unconventional Wells
Diego Molinari, Sathish Sankaran
Unconventional Resources Technology Conference (URTEC)
.... The key concept is to learn the bias of the physics-based model (relative to observations) and use it to make corrections to the physical model...
2021
Effects of SEM Preparation Techniques on the Appearance of Bacteria and Biofilms in the Carter Sandstone
Sarah E. Fratesi, F. Leo Lynch, Brenda L. Kirkland, Lewis R. Brown
Journal of Sedimentary Research (SEPM)
... is recommended in order to avoid bias. Anderson, T.F., 1951, Techniques for the preservation of three-dimensional structure in preparing specimens...
2004
Modeling secondary oil migration with core-scale data: Viking Formation, Alberta basin
Elise B. Bekele, Mark A. Person, Benjamin J. Rostron, Randal Barnes
AAPG Bulletin
... to diagenesis are unknown. Moreover, sampling bias may affect the permeability distribution in unpredictable ways. Numerical simulations of oil...
2002
A scale-independent approach to fracture intensity and average spacing measurement
Orlando J. Ortega, Randall A. Marrett, Stephen E. Laubach
AAPG Bulletin
... bias might explain variations in the best mathematical model for fracture spacing distributions, but Rives et al. (1992) and Ji and Saruwatari (1998...
2006
Spatial and vertical patterns of peak temperature in the Delaware Basin from Raman spectroscopy of carbonaceous material
Telemachos A. Manos and Nicholas D. Perez
AAPG Bulletin
...), an emerging geothermometer that can minimize uncertainties in peak temperature estimation arising from variable maceral chemistry or user bias...
2022
Seasonal Variation in Ecological and Taphonomic Processes Recorded in Shelly Death Assemblages
Yurena Yanes, Michał Kowalewski, Christopher S. Romanek
PALAIOS
... temperature hypothesis (i.e., preferential growth at certain temperatures), or (3) a taphonomic hypothesis (i.e., taphonomic bias due to differential seasonal...
2012
A new eurypterid Lagerstätte from the upper Silurian of Pennsylvania
Matthew B. Vrazo, Jeffrey M. Trop, Carlton E. Brett
PALAIOS
... articulated specimen would have a total score of 12. A bias of the ECI is that mostly or fully articulated specimens will outweigh partial or fragmented...
2014
Latitudinal patterns of gastropod drilling predation intensity through time
Subhronil Mondal, Hindolita Chakraborty, Shubhabrata Paul
PALAIOS
..., different major taxonomic groups, and life habit groups. To minimize a bias, we restricted our analysis to certain latitudinal bins. Because data...
2019
Bioerosion on spinicaudata shells from a Triassic freshwater paleolake, Mendoza, Argentina
Evelyn Luz Bustos Escalona, Adriana Cecilia Mancuso, Cecilia Andrea Benavente
PALAIOS
... of the spinicaudata shells. This, together with bias in extraction methodologies and sampling, is considered the reason for the rarity of spinicaudatans...
2019
Solving the puzzle of the bivalve shell fragment: inferring the original abundance and size frequency from the fragmented record
Eric N. Powell
PALAIOS
...; Leighton et al. 2016) and although the fragments as part of the taphonomic signature often have been used to evaluate preservational bias (Davies et al. 1989...
2020
Optimizing Production Potential of Unconventional Oil and Gas Wells: Insights From Statistical and Machine Learning Analysis of Well Spacing, Sequencing, and Landing Zone TVD Across Eleven North American Plays
Harpreet Singh, Chengxi Li, Peng Cheng, Huailiang Liu
Unconventional Resources Technology Conference (URTEC)
..., and Utica, respectively. Older wells with previous generation of completion design (less dense) may introduce some bias in productivity, hence the study does...
2023
Statistical Methods For Log Analysis of Reservoir Properties: Chapter 1
John H. Doveton
AAPG Special Volumes
... contrasting repeat runs of properly calibrated instruments with main runs, provided that there is no bias in the measurement. If there is a distinctive...
1994
Interpreting Permeability from Mercury Injection Capillary Pressure Data; #41660 (2015)
Alton A. Brown
Search and Discovery.com
... of tight rocks. Four methods for estimating permeability from MICP data are found to have small bias and reasonable precision over a wide range...
2015