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The AAPG/Datapages Combined Publications Database
Showing 47,089 Results. Searched 200,636 documents.
Pseudo S-wave splitting effects associated with poor receiver coupling on ocean bottom multi component data
Moacyr de Souza Bezerra, James Simmons, James Gaiser
International Meeting for Applied Geoscience and Energy (IMAGE)
...se T as, 𝑅 = 𝑐𝑜𝑠𝜙 𝑥 + 𝑠𝑖𝑛𝜙 𝑦 𝑇 = −𝑠𝑖𝑛𝜙 𝑥 + 𝑐𝑜𝑠𝜙 𝑦, (2) where the angle ϕ is rotation about the vertical axis for a right-handed syst...
2022
Preliminary Assessment of Ichnofacies in the Gething Formation of NE British Columbia
Murray K. Gingras, John-Paul Zonneveld, Barton J. Blakney
CSPG Bulletin
... range from 1 to 7 mm thick. Within FA3, high angle cross stratification (F2b) is common. The high angle foresets commonly display rhythmic lamination...
2010
Interference Patterns from Inclined Shear Fold Systems
E. S. O'Driscoll
CSPG Bulletin
... systems were along the one common translation direction or "flow line." From these commutative patterns, more complicated laminar models have since been...
1964
The Effects of Sea-Level Fluctuations on Prograding Shorelines and Estuarine Valley-Fill Sequences in the Glauconitic Member, Medicine River Field and Adjacent Areas
R. S. Strobl
CSPG Special Publications
.... The sandstones are commonly massive in appearance, but low-to moderate-angle crossbeds (5 to 15 degrees) containing rip-up clasts, are common at channel bases...
1988
Braided-River Deposits in A Muddy Depositional Setting: The Molina Member of the Wasatch Formation (Paleogene), West-Central Colorado, U.S.A.
John C. Lorenz, Gregory C. Nadon
Journal of Sedimentary Research (SEPM)
... a distinguishing characteristic of the formation. Planar, horizontal to low-angle bedding is common not only in the thicker and laterally extensive beds but also...
2002
Fluvial and Deltaic Facies in the Sentinel Butte Formation, Central Williston Basin
V. B. Cherven
Journal of Sedimentary Research (SEPM)
... by planar cross bedding (both high-angle and low-angle). Ripple cross bedding and ripple marks are present near the top of the bed. The beds also free...
1978
Understanding Pore Structure of Mudrocks and Pore-Size Dependent Sorption Mechanism Using Small Angle Neutron Scattering
Amirsaman Rezaeyan, Timo Seemann, Pieter Bertier, Vitaliy Pipich, Leon Leu, Niko Kampman, Artem Feoktystov, Lester Barnsley, Andreas Busch
Unconventional Resources Technology Conference (URTEC)
...Understanding Pore Structure of Mudrocks and Pore-Size Dependent Sorption Mechanism Using Small Angle Neutron Scattering Amirsaman Rezaeyan, Timo...
2019
The Logarithmic Spire in Planktonic Foraminifera: Its Use in Taxonomy, Evolution, and Paleoecology
Richard K. Olsson
GCAGS Transactions
... for the proloculus but only the succeeding chambers. The simplest geometric chamber shape of planktonic Foraminifera is that of a sphere. Another common...
1971
Novel Methods to Overcome Micro-Seismic Limitations in Estimating Hydraulic Fracture Geometry in Unconventional Reservoirs
Shubham Mishra, Vinil Reddy
Unconventional Resources Technology Conference (URTEC)
... common completion is a cased cemented well with the plugand-perf multistage isolation technique, which involves plug setting to isolate the previous...
2021
TST3D: Automated Structural Interpretation in Horizontal Wellbores
Tuanfeng Zhang, David McCormick, Allan Nandlal, Marie LeFranc
Unconventional Resources Technology Conference (URTEC)
... are illustrated in Figure 2 for a deviated well that is drilled down-dip and penetrates a dipping layer at an oblique angle. Note that TST is always less than...
2018
Re-evaluation of the Use of Undulatory Extinction and Polycrystallinity in Detrital Quartz for Provenance Interpretation
Abhijit Basu, Steven W. Young, Lee J. Suttner, W. Calvin James, Greg H. Mack
Journal of Sedimentary Research (SEPM)
... of the distributions in Figure 1, provides a reliable basis for selection of the optimum angle for subdivision of all monocrystalline quartz into two...
1975
Upper-Flow-Regime Stratification Types on Steep-Face, Coarse-Grained, Gilbert-Type Progradational Wedges (Pleistocene, Southern Italy)
Francesco Massari
Journal of Sedimentary Research (SEPM)
... upper boundaries (with internal lamination ranging from planar or low-angle, boundary-unconformable, to curved, boundary-conformable), and scour...
1996
Advanced Imaging and Inversion for Oil Production Estimates in Unconventional Resource Plays
Greg M. Johnson, Paul Miller, David Phillips
Unconventional Resources Technology Conference (URTEC)
... effects (Thomsen 2002) and any amplitude-versus-angle inversion work will benefit from advanced imaging that properly corrects for TI. The multiazimuth...
2013
Structural Pattern and Deformation Style in the Central Range of Irian Jaya (West Papua), Indonesia
Benyamin Sapiie
Indonesian Petroleum Association
... minor reverse or thrust faults have been observed. Slickensides due to bedding-plane slip are common on both limbs of folds indicating flexural slip...
2002
Application of X-ray Methods to the Investigation of Recent Sediments: Part 7. Methods of Study
Martin Mehmel
AAPG Special Volumes
...------------------------ in Figure 1, A. The apex angle of this cone, as is apparent from Figure 2, is equal to 4, where equals the glancing angle. The ratio of the distance 2a...
1939
Petrography of Salt Dome Cap Rock
Marcus I. Goldman
AAPG Bulletin
... throughout the anhydrite of this cap, but the low-angle banding is the more common. In the third subdivision of the section, extending from a depth of 948...
1925
Geology of Crow River - Spring River Area British Mountain Front Yukon, Canada1
W. O. Kupsch
CSPG Bulletin
...) The structural geology of British Mountains, Yukon, between Crow and Spring rivers is characterized by a series of high-angle (about 30°) thrust faults...
1973
Petrography of Salt Dome Cap Rock
Marcus I. Goldman
AAPG Special Volumes
... of this cap, but the low-angle banding is the more common. In the third subdivision of the section, extending from a depth of 948 feet to the bottom...
1926
Abstract: Deterministic Marine Deghosting: Tutorial and Recent Advances; #90224 (2015)
Mike J. Perz and Hassan Masoomzadeh
Search and Discovery.com
... propagating at an angle from the vertical is given by 2𝑑 cos 𝜃 𝑡𝑑 = , 𝑣 where d is water depth and v is water velocity. Such angle-dependence...
2015
G. Non-Normal Incidence Reflections and the Determination of Lithology - Use of Shear Waves and Amplitude with Offset
Norman S. Neidell
AAPG Special Volumes
... Coefficients for Gas Sands at Nonnormal Angle of Incidence," Preprint, 52nd Annual Mtg., SEG, Dallas, Oct. 17-21, 1982. (17) Chiburis (E.F.), "Analysis...
1987
Application of Borehole Images to Three-Dimensional Geometric Modeling of Eolian Sandstone Reservoirs, Permian Rotliegende, North Sea
Stefan M. Luthi, Jayanth R. Banavar
AAPG Bulletin
... angle, a local paleowind direction from the northeast is suggested, fitting well the Permian paleo-tradewind regime. A few cross-beds in the central part...
1988
Oil-Base Micro Imager (OBMI) Application in Sangatta Field: A Case Study
Patricius Sembiring, Agustinus S.R., Nouri Bashir, Heru Danardatu, Sanggam Hutabarat
Indonesian Petroleum Association
... gradient low angle structural dip indicating weak tectonic activities that are considered to have minor effect on the sediments depositional setting...
2005
Normalized energy-norm imaging condition for elastic reverse-time migration
Can Oren, Jeffrey Shragge
International Meeting for Applied Geoscience and Energy (IMAGE)
...://doi.org/10.1190/geo2016-0424.1. Rosales, D. A., S. Fomel, B. L. Biondi, and P. C. Sava, 2008, Wave-equation angle-domain common-image gathers...
2022
DMO and NMO as Applied in Seismic Data Processing
Jiunnyih Chen
Geological Society of Malaysia (GSM)
... techniques operating on constant offset section are generally available only when the feathering angle can be constrained within a very small value...
1989
Eolian Environments
Robert J. Weimer, Karen W. Porter, Cooper B. Land
Special Publications of SEPM
... compound sets, tens of feet in thickness, of high-angle cross-stratified, well sorted and rounded, fine-grained sand resulting from different types...
1985