Welcome to the new Datapages Archives
Datapages has redesigned the Archives with new features. You can search from the home page or browse content from over 40 publishers and societies. Non-subscribers may now view abstracts on all items before purchasing full text. Please continue to send us your feedback at emailaddress.
AAPG Members: Your membership includes full access to the online archive of the AAPG Bulletin. Please login at Members Only. Access to full text from other collections requires a subscription or pay-per-view document purchase.
Welcome to the new Datapages Archives
Search Results > New Search > Revise Search
The AAPG/Datapages Combined Publications Database
Showing 1,682 Results. Searched 200,685 documents.
Tensile radiation from slip in a medium with rough fractures
Scott Leaney, Chris Chapman
International Meeting for Applied Geoscience and Energy (IMAGE)
...) included a compliance coupling term in 2D modelling of single well imaging data and inverted using least-squares migration. While non-zero coupling...
2022
Elastic FWI for large impedance contrasts
Zedong Wu, Zhiyuan Wei, Zhigang Zhang, Jiawei Mei, Rongxin Huang, Ping Wang
International Meeting for Applied Geoscience and Energy (IMAGE)
..., including transmission waves, primary reflections, and their multiples, we propose FWI Imaging to realize full-wavefield imaging through least-squares...
2022
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
Capturing elusive subsalt 4D signals in Atlantis field with 4D elastic FWI imaging
Obi Egbue, Li Jiang, Chi Chen, Sabrina Strauss, Zedong Wu, Zhiyuan Wei
International Meeting for Applied Geoscience and Energy (IMAGE)
...., 2023). FWI Imaging iteratively inverts for the reflectivity together with velocity from low to high frequencies through least-squares fitting...
2024
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
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
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
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
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
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
Structural Analysis of the Boktukola Syncline, Central Ouachita Mountains, Oklahoma
Aaron Ball
Oklahoma City Geological Society
... Special Publication No. 22, p. 120–142. Mulchrone, K.F., D. Pastor-Galán, and G. Gutiérrez-Alonso, 2013, Mathematica code for least-squares cone fitting...
2014
Integrating Geophysical and Trench Data to Analyze Shallow Faulting in the Wasatch Fault Zone Near Provo, Utah County, Utah
Alvin K. Benson, Nathan Brett Mustoe, James N. Carver
Utah Geological Association
... of near-surface materials could be determined. Parasnis’ (1962) least-squares analysis was employed to determine this density from statistics...
1995
Applications and Limitations of Dip Shooting
E. E. Rosaire and Joseph L. Adler
AAPG Bulletin
... of each of the traverses used has been plotted without FOOTNOTE 4. Irwin Roman, "Least Squares in Practical Geophysics," Geophysical Prospecting...
1934
Reserve Estimation With Unified Production Analysis
Mohamed Mehana, Jeff Callard
Unconventional Resources Technology Conference (URTEC)
... in the model fit is flowback, where production rates are less than peak production rate. Figure 2: Least squares average error for specific selection...
2018
Compositional Analysis of Lithologies from Wireline Logs: Chapter 3
John H. Doveton
AAPG Special Volumes
..., this solution is the one that minimizes the sums of squares of the deviations between the original logs and their predictions. The least-squares solution...
1994
A Methodology for Unstructured Damped Stress Inversion of Microseismic Focal Mechanisms
Bing Q. Li, Jing Du
Unconventional Resources Technology Conference (URTEC)
... The damped stress inversion method proposed by Hardebeck and Michael (2006) is expressed as the following least squares problem. Note that bold terms...
2019
Meramec Velocity Systematics
Jing Fu, Carl Sondergeld, Chandra Rai
Unconventional Resources Technology Conference (URTEC)
... content. The following fits to the data are obtained by least-squares regression. For compressional velocity (φ is the volume fraction pores, Clays...
2020
Merging Physics and Data-Driven Methods for Field-Wide Bottomhole Pressure Estimation in Unconventional Wells
Diego Molinari, Sathish Sankaran
Unconventional Resources Technology Conference (URTEC)
... models with no physics – namely, ordinary least squares (OLS) regression, lasso regression, and support vector regression. Polynomial features...
2021
Large-scale Marchenko imaging with distance-aware matrix reordering, tile low-rank compression, and mixed-precision computations
Matteo Ravasi, Yuxi Hong, Hatem Ltaief, David Keyes, David Vargas
International Meeting for Applied Geoscience and Energy (IMAGE)
...work for the implementation of large-scale integral operators with flexible, modern HPC solutions - enabling 3D Marchenko imaging by least-squares inversion: Geophy...
2022
Premigration attenuation analysis and mapping to image domain by weighted migrations
Yonghe Sun, Chunling Wu, Mark Fan, Zhemin Tan
International Meeting for Applied Geoscience and Energy (IMAGE)
.../𝑄 (𝜃, 𝑧)/𝐼1 (𝜃, 𝑧). = (17) Numerically, however, the denominator 𝐼1 (𝜃, 𝑧) contains values with a mean of zero. A least-squares division and smoothing...
2022