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The AAPG/Datapages Combined Publications Database
Showing 1,737 Results. Searched 200,685 documents.
Bedforms in the Pitt River, British Columbia
Gail M. Ashley
CSPG Special Publications
... “humpback” forms south of Point Addington (E on Fig. 3A). F. Flood-oriented, symmetric and ebb-modified, and ebb-oriented sand waves that occur on large...
1977
Permeability estimation from transient vadose zone pumping tests in shallow coastal-plain sediments
K. L. Dixon, R. L. Nichols
Environmental Geosciences (DEG)
... analytical solution to the partial differential equation for radially symmetric gas flow to a pumping well (Falta, 1996). The transient solution...
2005
Stratification Produced by Migrating Bed Forms
J. C. Harms, J. B. Southard, D. R. Spearing , R. G. Walker
Special Publications of SEPM
... symmetric or somewhat asymmetric. The appearance of set boundaries and cross strata on variously Viewed on a vertical suroriented surfaces is depicted...
1975
A Unified Leak-off and Flow-back Model for Fractured Reservoirs
Dylan Copeland
Unconventional Resources Technology Conference (URTEC)
...0 of Equation 2 using the implicit backward Euler method in time and second-order central differences for the spatial derivatives results in the local t...
2014
Pangaean Climates
Eric J. Barron, George T. Moore
Special Publications of SEPM
... Permian. Kutzbach and Gallimore (1989) completed a full seasonal cycle GCM simulation for an idealized (one large supercontinent symmetric about...
1994
Upper Cretaceous Shoreface/Tidal Couplets in the San Juan Basin, New Mexico, USA: Significant High Frequency Events Resolved from the Gallup Clastic Wedge
M. I. Alvarez-Bastos
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... to symmetric intermediate-scale base level cycle. In a couplet, the shoreface component is associated to an intermediate-term base level-fall...
2006
Tensile radiation from slip in a medium with rough fractures
Scott Leaney, Chris Chapman
International Meeting for Applied Geoscience and Energy (IMAGE)
... is commonly represented by a symmetric moment tensor (Burridge and Knoppoff, 1964). The symmetric moment tensor, 𝑴, has six independent elements and may...
2022
Reservoir Description by Interferometric Imaging of VSP Data in Transition Zones
Thomas Radford, Martin Karrenbach, Ferry Yustiana, Willi Brianno, Dhea Wachju
Indonesian Petroleum Association
... on the right display effects produced in the presence of a layered sequence. The layered model produces wave fields that are symmetric about the source point...
2013
The Wilson Cycle and Petroleum Plays
Rasoul Sorkhabi
GEO ExPro Magazine
... indicates symmetric rifting, or ‘half-grabens’ (bounded by a normal fault on one side), suggesting asymmetric rifting. The East African Rift has...
2020
New Observations of Grabens from the Needles District, Canyonlands National Park, Utah
Richard A. Schultz, Jason M. Moore
Utah Geological Association
... superjacent brittle strata and propagated upward to form a symmetric graben. Tilting of inter-graben horsts occurs within about 1.5 mi (2 km...
1996
An AI approach to automated magnetic formation mapping beneath cover
David A. Pratt, K. Blair McKenzie, Anthony S. White
Petroleum Exploration Society of Australia (PESA)
... = # 𝐵'% 𝐵'' 𝐵'( ) = ⎢ -% 𝐵(% 𝐵(' 𝐵(( ⎢ -.1 ⎣ -% -./ -' -.0 -./ -( ⎤ -.0 ⎥ -' -.1 -( ⎥ -.1 ⎥ -' -( (1) ⎦ Eigenvector decomposition of the symmetric tensor matrix produces...
2019
Deformation of Flysch Formations in the West Bourland Mountain Area, Western Marathon Basin, Texas
Mary Anne Duncan
West Texas Geological Society
... thrusting only occurs in association with tight asymmetric folding in the study area and not with the relatively symmetric buckle folding of the eastern...
1985
Features of the Formation of Oil-Gas Structures of the Volgo-Ural Region
V. P. Bukhartsev
Petroleum Geology: A Digest of Russian Literature
...nge Q’-r = -0.2 ± 0.2. In the Volga-Ural region strongly asymmetric oil-gas-bearing structures rarely have larger reserves than symmetric or weakly as...
1965
Determining Maximum Horizontal Stress with Microseismic Focal Mechanisms - Case Studies in the Marcellus, Eagle Ford, Wolfcamp
Alireza Agharazi
Unconventional Resources Technology Conference (URTEC)
.... For angular momentum URTeC 2461621 3 conservation, the condition should be satisfied, so the moment tensor is symmetric with just six independent...
2016
Mechanisms for Deformation of Sedimentary Strata at Sheep Mountain Anticline, Bighorn Basin, Wyoming
Jeff Hennier, John H. Spang
Wyoming Geological Association
... (Figure 4) to a tight, nearly symmetric fold at the northwest end (Figure 6). The change in fold geometry indicates that the fold becomes conical...
1983
Microseismic Without Dots Probabilistic Interpretation and Integration of Microseismic Surveys
Ulrich Zimmer
Unconventional Resources Technology Conference (URTEC)
... of a valid PDF function is permissible. As an example, the amplitude of a microseismic phase arrival generally increases with time, i.e. the arrival wavelets...
2017
Noise suppression and compressive sensing recovery with seismic-adapted DnCNN within RED
Nasser Kazemi
International Meeting for Applied Geoscience and Energy (IMAGE)
..., calculating the proximal gradient of R(s) with DnCNN can be challenging. Romano et al., show that if the denoiser satisfies the local homogeneity condition...
2024
Numerical Modeling of 1D Anomalous Diffusion in Unconventional Wells Using a Nonuniform Mesh
Ralf Holy, Erdal Ozkan
Unconventional Resources Technology Conference (URTEC)
.... This definition is an 𝑥𝑥 extension of the symmetric (𝜗𝜗 = 1/2) Caputo derivative definition given in Klimek and Lupa (2011). Detailed derivations...
2017
Can Friction Reducers Transport Sand During Fracturing Treatment?
Lingjuan Shen, Leonid Vigderman, David Heller, Diankui Fu
Unconventional Resources Technology Conference (URTEC)
... is very interesting. Sand pumped with HVFR-1 displayed a symmetric funnel shape, and covered about 80% of the slot height. At 2 minutes, the sand filled up...
2018
Impact on Hydrocarbon Retention of Sedimentary Fracturing and Faulting around Salt Sheets in the Gulf Coast
S. Cao , I. Lerche , J. J. O'Brien
GCAGS Transactions
... to a high density of lines which blacken the central inner region. Note that the fracture directions are nearly symmetric around the nose of the salt because...
1989
Quantitative Modeling of the Dynamic Evolution of Salt Structures
Kenneth Petersen, Ian Lerche
GCAGS Transactions
... sedimentary formations. The procedure also handles asymmetric two-dimensional structures as well as symmetric three-dimensional structures...
1992
Robust 3D Modeling of Hydraulic Fracture Propagation in Naturally Fractured Reservoirs
Amirhossein Kamali, Ahmad Ghassemi
Unconventional Resources Technology Conference (URTEC)
... that the shear slip is not symmetric with respect to the center of the NF. This is attributed to an assymteric stress profile caused by the intersecting...
2019
Analysis of Fracture Interference - Coupling of Flow and Geomechanical Computations with Discrete Fracture Modeling
Jiahui Chen, Juliana Y. Leung
Unconventional Resources Technology Conference (URTEC)
... of 𝑵𝑵 𝐶𝐶 and 𝑵𝑵 𝑅𝑅 , respectively. 𝑺𝑺 𝐸𝐸 is a symmetric positive matrix which guarantees the positivity of stiffness matrix, the choice...
2020
Numerical Upscaling of Discrete Fracture Networks for Transient Analysis
Vincent Artus
Unconventional Resources Technology Conference (URTEC)
... of the smallest angle. Then, the symmetric relative to the angle bisector is taken, then the symmetric relative to the closest segment, and so on. By construction...
2020
Geologic Structure of Novaya Zemlya, Vaygach, Pay-Khoy, Polar Urals, and Northern Pechora: Regional Arctic Geology of the USSR
V. I. Bondarev, S. V. Cherkesova, V. S. Enokyan, B. S. Romanovich
AAPG Special Volumes
...-Vaygach anticlinorium is a symmetric anticlinorium of great structural complexity, but the structural deformation, especially faulting...
1973