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The AAPG/Datapages Combined Publications Database
Showing 1,739 Results. Searched 200,693 documents.
Statistical imaging through strongly scattering near-surface with path summation techniques
Andrey Bakulin, Ilya Silvestrov, Maxim Protasov, Dmitry Neklyudov
International Meeting for Applied Geoscience and Energy (IMAGE)
... by summing the images obtained from the ensemble. We show that image traces undergo symmetric phase perturbations, which cancel out during the summation...
2024
Kriging-based surrogate models for convergence acceleration of Markov chains: An example of magnetotellurics-dix joint inversion
Alejandro Quiaro, Mauricio D. Sacchi
International Meeting for Applied Geoscience and Energy (IMAGE)
... probability. If the probability function g is symmetric (for example, a Gaussian distribution), the probability of proposing mn+1 when the current state is mn...
2024
Preliminary Results from a Planform Kinematic Model of Orogen Evolution, Surface Processes and the Development of Clastic Foreland Basin Stratigraphy
David D. Johnson, Christopher Beaumont
Special Publications of SEPM
... a model back-to-back Coulomb orogen takes the form of orogen takes the form of symmetric back to back Coulomb wedges which grow by accretion...
1995
Computer Simulation of the Yates Formation (Permian, Delaware Basin) - Sequence Stratigraphy and Shelf-to-Basin Correlation Implications
James M. Borer, Paul M. Harris
West Texas Geological Society
... formed from symmetric sinusoidal sea-level fluctuations. Shape of the Sea-Level Curve Based on the asymmetry of Yates 4th-order (30-m, 400-k.y...
1995
Towards wave-equation ambient noise tomography of a landslide: The Harmalière case study
Giuseppe Provenzano, Grégory Biévre, Romain Brossier, Stéphane Garambois, Ludovic Métivier
International Meeting for Applied Geoscience and Energy (IMAGE)
... lags and value respectively above and below a threshold, are rejected (Maggi et al., 2009). For each selected 1-second long symmetric window...
2024
Impact of Pore Pressure Depletion on Stress Reorientation and its Implications on the Growth of Child Well Fractures
Shivam Agrawal, Mukul Sharma
Unconventional Resources Technology Conference (URTEC)
... fracture. (a) Symmetric growth till it sees the depleted region, (b) Asymmetric growth afterwards. 6.2. Both P1 and P2 depleted equally, child well...
2018
Regional Geology of the Pierce Member of the Upper Morrow Formation in the Anadarko Basin
Brad S. Johnson
Rocky Mountain Association of Geologists
.... The column is keyed to the El Paso No. 1-9 Pierce (Sec 9, T13N, R25W). basin became compressional with its shape changing from symmetric to asymmetric...
1990
Zama--A Geophysical Case History: Case Histories
Hugh Evans
AAPG Special Volumes
...) symmetric split spread with 440-ft (134 m) hole spacing was used to yield a 900 percent CDP output. Fig. 13. Rainbow template, deconvolved, Keg River...
1972
Mechanism Study of Casing Deformation in Multistage Hydraulic Fracturing Shale Reservoir
Ziyi Xu, Fei Yin, Lihong Han, Shangyu Yang, Xingru Wu
Unconventional Resources Technology Conference (URTEC)
... and symmetric with the cluster center. Formation properties in the drainage area can be represented by a segment between two stages. Therefore in this paper...
2018
Shallow Water Ripple Mark Varieties
William F. Tanner
Journal of Sedimentary Research (SEPM)
... by many workers. They include the wave-formed (symmetric; Ripple Symmetry Index crest-to-trough = --------------- = 1) trough-to-crest and the current...
1960
Regional Depositional History of the Miocene-Pleistocene Louisiana Slope, Green Canyon-Mississippi Canyon
David L. Risch, Abu N. Chowdhury, Andrew E. Hannan
GCAGS Transactions
... in Figure 5. Minibasin type 1 is a symmetric salt roller or depression that traps sands from successive turbidites near the center of the depression...
1994
Distinguishing Fracture Conductivity and Fracture Flux: A Systematic Investigation of Individual Fracture Contribution to Well Productivity
Aaditya Khanal, Ruud Weijermars
Unconventional Resources Technology Conference (URTEC)
...). Fig. 3a shows the DRV around each of the fractures after 30-year production, which evolves markedly different from the initial symmetric patterns Fig...
2020
GeoSHAP: A Novel Method of Deriving Rock Quality Index from Machine Learning Models and Principal Components Analysis
T. Cross, K. Sathaye, K. Darnell, J. Ramey, K. Crifasi, D. Niederhut
Unconventional Resources Technology Conference (URTEC)
... are symmetric linear estimates of the per-feature contribution to a prediction from the model. That is to say, a Shapley value takes a model output, like...
2020
Benchmarking Operator Performance in the Williston Basin using a Predictive Machine Learning Model
T. Cross, K. Sathaye, K. Darnell, D. Niederhut, K. Crifasi
Unconventional Resources Technology Conference (URTEC)
... are Shapley values, which are symmetric linear estimates of the per-feature contribution to a prediction from the URTeC 2750 3 model. That is to say...
2020
Are Unconventional Well Performance Gains Exhausted? Investigating the Drivers of Year-over-Year Production Improvements Across the Major US Unconventional Plays Using Machine Learning
T. Cross, J. Chaplin, K. Sathaye, A. Cui
Unconventional Resources Technology Conference (URTEC)
... the inference models. The explanations used in this paper are Shapley values, which are symmetric linear estimates of the per-feature contribution...
2021
Dynamic Response of Deepwater Depositional Systems to Growth of the Mississippi Fan Fold Belt, Gulf of Mexico
Ciaran J. O'Byrne , Joydeep K. Haldar, Richard Klecker , Arthur E. Berman and John Martinez
GCAGS Transactions
..., the tabular sheet is ponded and flat topped, and the map-view coherency image suggests a symmetric geometry about the entrenched valley mouth...
1999
Oriented, Linear-shrinkage Cracks In Green River Formation (EOCENE), Raven Ridge Area, Uinta Basin, Utah
M. Dane Picard
Journal of Sedimentary Research (SEPM)
... to paleocurrent directions (or orientations) as indicated by asymmetric or symmetric ripple marks. A comparison of 12 trends of linear-shrinkage cracks...
1966
Tabular and Trough Cross-bedding: Comparison of Dip Azimuth Variability
L. D. Meckel
Journal of Sedimentary Research (SEPM)
... and compared with 12 readings along trough axes in lower rose. End_Page 84------------------------- which is nearly symmetric about the mean. All...
1967
Use of Machine Learning Production Driver Cross-Sections for Regional Geologic Insights in the Bakken-Three Forks Play
T. Cross, K. Sathaye, J. Chaplin
Unconventional Resources Technology Conference (URTEC)
... are symmetric linear estimates of the per-feature contribution to a prediction from the model. A Shapley value takes a model output, like cumulative oil...
2021
Morphology, Structure, and Evolution of a Channel Island in the Barakar River, Barakar, West Bengal
Swapan Kumar Sarkar, Sudhir Basumallick
Journal of Sedimentary Research (SEPM)
... direction, the laminae appear to lie symmetric with respect to the profile of the scour. In the same vertical face, asymmet ically filled troughs may...
1968
How Does the Impact of Completions Change Over the Life of a Well? A Comparison Across the Major US Unconventional Plays Using Machine Learning
T. Cross, K. Long, D. Niederhut, A. Cui
Unconventional Resources Technology Conference (URTEC)
... evaluation, we then generated explanations for the predictions of each model. We used Shapley values, which are symmetric linear estimates of the per-feature...
2022
Nautiloids and Current Ripples as Paleocurrent Indicators in Upper Ordovician Limestones, Anticosti Island, Canada
Owen A. Dixon
Journal of Sedimentary Research (SEPM)
... symmetric (fig. 6). Recent erosion may account for slightly flattened crests on some of the ripples. The ripples show some external features which...
1970
Counterregional-Style Deformation in the Deep Shelf of the Northern Gulf of Mexico
Mark G. Rowan, Kerry F. Inman
GCAGS Transactions
..., the geometry can range from an asymmetric fault-bounded growth wedge to a faulted fold to a symmetric growth syncline. Two or more such systems with variable...
2005
Hydraulic Fracture Closure Revealed Under Controlled Laboratory Conditions
Mohsen Talebkeikhah, Brice Lecampion
Unconventional Resources Technology Conference (URTEC)
... blocks. Three independent symmetric pairs of flat jacks and pistons apply triaxial confining stresses. A 1/8" high-pressure tube line, cemented with epoxy...
2024
Innovative Workflow for Rapid Parent-Child Degradation Modeling in Unconventional Reservoirs
Jichao Yin, Qin Ji, Jichao Han, James Cassanelli, Yuxing Ben, Hamid Behzadi, Osama Raba, Vivek Muralidharan, Andrew Haines, Xueying Xie, Claire Sirois
Unconventional Resources Technology Conference (URTEC)
... geometry is symmetric, implying there is no impact from depletion. Figure 11 clearly shows that child fracture length asymmetry and height loss both...
2025