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The AAPG/Datapages Combined Publications Database
Showing 254 Results. Searched 195,452 documents.
Plate Convergence and Accretion in Taiwan-Luzon Region
Carl Bowin , Richard S. Lu , Chao-Shing Lee , Hans Schouten
AAPG Bulletin
...° increments and estimated that a phase shift of 240 ± 30° (or 60 ± 30°) eliminates most of the skewness from the observed anomalies. The anomalies look...
1978
A Gravity Study of the Thermopolis Anticline, Southern Bighorn Basin, Wyoming
R.B. Grannell, P.K. Showalter
Rocky Mountain Association of Geologists
.... The modellng process also requlred a phase shift and slope adjustment (reg~onalres~dualseparation) for each model. to account for the fact that a local...
1991
Correlation of Sedimentary Basins Across the North Atlantic as Obtained from Gravity and Magnetic Data, and Its Relation to the Early Evolution of the North Atlantic: Chapter 9: North Atlantic Perspectives
J. Verhoef, S. P. Srivastava
AAPG Special Volumes
... an anomaly without introducing a phase shift, while the horizontal gradient introduces a phase shift of 90°, which might weaken a lineation. Because both...
1989
L. Van Bendegom: A Neglected Innovator in Meander Studies
J. R. L. Allen
Dallas Geological Society
..., Series Paper no. 11, 79p. Hickin, E. J. and Nanson, G. C. 1975, The character of channel migration on the Beatton River, northeast British Columbia...
1977
Modeling molluscan marine reservoir ages in a variable-upwelling environment
Kevin B. Jones, Gregory W.L. Hodgins, C. Fred T. Andrus, Miguel F. Etayo-Cadavid
PALAIOS
.... (2009) estimated a phase shift on the order of a week (0.02 yr) between temperature and corresponding radiocarbon changes recorded in mollusk shell...
2010
L. Van Bendegom: A Neglected Innovator in Meander Studies
J. R. L. Allen
CSPG Special Publications
..., Series Paper no. 11, 79p. Hickin, E. J. and Nanson, G. C. 1975, The character of channel migration on the Beatton River, northeast British Columbia...
1977
Practical Use of Borehole Seismic in Exploration; Goals and Shortcomings
F. Sandnes, L. Nustt, S. G. Henry
Indonesian Petroleum Association
... of sources and recording equipment is essential. Additional processing may be necessary to correct for phase shift introduced by these operators...
1983
Evaluation of the Texaco Dielectric Log in Central Sumatra
P. T. Cox
Indonesian Petroleum Association
... of the wave. The propagation delay, or phase shift of the wave, may be determined by taking the difference in arrival times (the phase difference...
1983
Gulf Coast Logging
Gunnar J. Teilmann, Robert E. Murphy
New Orleans Geological Society
... is a device which emits microwaves into a formation and measures the transmission speed, phase shift and signal loss of those microwaves. Its original...
1991
Enhanced Thermal Recovery and Reservoir Characterization
Christopher Phillips
Pacific Section of AAPG
... and the depth of investigation for the phase shift shallow resistivity (Rps) is approximately 24 inches. If drilling sub-parallel to the bedding near a shale...
1996
Chapter 7: Advanced Reservoir Characterization Using 3D Seismic Data in Badger Basin, Bighorn Basin, Wyoming
John E. Buggenhagen
Montana Geological Society
... shift migration was performed using 90% of the smoothed final velocity model. The result of this processing sequence...
1997
Improved Decision Making Through Optimized Data Acquisition Program in Deepwater Exploration Drilling - A Case Study from East Kalimantan
Graziano Capone, Lilik Budi Riyanto, Cikko Majesta, Ali Shahbazi Fakhr, Hengky Ng, Yevgeniy Karpekin
Indonesian Petroleum Association
...). The wells 1 and 2, triple-combo logging suite had been recorded, consisting of natural gamma, density, neutron and phase-shift resistivity measurement...
2013
Prospect Definition Using Cost-Effective 2-D Swath in Rocky Mountain Stratigraphic Traps
James R. Oltmans II
Rocky Mountain Association of Geologists
... vary. While this clock variance may be microseconds/sec the separate systems could record a phase shift relative to each other at deeper events...
1995
Bayesian joint inversion of controlled source electromagnetic and magnetotelluric data to infer presence of a freshwater aquifer offshore New Jersey
Daniel Blatter, Kerry Key, Anandaroop Ray, Chloe Gustaffson, Rob Evans
Petroleum Exploration Society of Australia (PESA)
...) method, which actively generates EM fields and measures their attenuation and phase shift at receivers offset from the transmitter. The measured EM...
2019
Reservoir Characterization Using Seismic Attributes and Inversion Analysis of Globigerina Limestone Reservoir, Madura Strait, Indonesia
Muhammad Tajul Arifin, Angus J. Ferguson
Indonesian Petroleum Association
... phase shift was applied to the derived amplitude spectrum. The wavelet that was used in the inversion process is the statistical wavelet derived from...
2017
Seismic Characterization of a "Compound Tectonic Wedge" Beneath the Rocky Mountain Foreland Basin, Alberta
Donald C. Lawton, Chakrit Sukaramongkol,, Deborah A. Spratt
CSPG Bulletin
... shallow reflectors. Post-stack migration tests were undertaken with similar results being obtained for finite difference, phase-shift and f-k migration...
1996
Using NMR to Quantify Mineralization-induced Porosity Changes in Varied Lithologies: IOR and Carbon Storage Applications
Shaina Kelly, Jacob Tielke, Michael Dick, Dragan Veselinovic
Unconventional Resources Technology Conference (URTEC)
... a reduction in amplitude (attenuation) and a change in peak position (phase shift) that is a function of the permeability of the core. Using custom...
2023
Chapter 22: Correlation of Seismic Attributes and Geomechanical Properties to the Rate of Penetration in the Mississippian Limestone, Oklahoma
Xuan Qi, Joseph Snyder, Tao Zhao, Kurt J. Marfurt, Matthew J. Pranter
AAPG Special Volumes
... phase shift, bandpass filtering ( 10 – 15 — 110 – 120 Hz ) , parabolic Radon transform, and trim statics. Exploratory Data Analysis...
2019
Orbital Forcing and Sedimentary Sequences
Alfred G. Fischer, David J. Bottjer
Journal of Sedimentary Research (SEPM)
... periods gives rise to interference, phase shift, and combination tones. When these forcing functions impinge on atmospheric and oceanic processes...
1991
Limitations on Resolution of Seismic Reflections and Geologic Detail Derivable from Them: Section 1. Fundamentals of Stratigraphic Interpretation of Seismic Data
Robert E. Sheriff
AAPG Special Volumes
... be inverted with respect to the other or may have some other phase shift. SEISMIC LOGS Whereas synthetic seismograms provide a means...
1977
Acoustic and Elastic Modeling of Seismic Time-Lapse Data from the Sleipner CO2 Storage Operation
R. J. Arts, M. Trani, R. A. Chadwick, O. Eiken, S. Dortland, L. G. H. van der Meer
AAPG Special Volumes
... = base Utsira sand; TWT = two-way traveltime.The data were stacked and migrated using the NMO-velocity model, with the application of a phase shift...
2009
Submarine Canyons in the Bathtub
Francois Metivier, Eric Lajeunesse, Marie-Christine Cacas
Journal of Sedimentary Research (SEPM)
... of gray code and phase shift light projection: analysis and compensation of the systematic errors: Applied Optics, v. 31, p. 6565–6573. Yalin, M.S....
2005
Structural imaging in the Rocky Mountain Foothills (Alberta) using magnetotelluric exploration
Wen Xiao, Martyn Unsworth
AAPG Bulletin
... angle can also be defined and is the phase shift between Ex and Hy at a given frequency. If the apparent resistivity increases with decreasing frequency...
2006
Interpretation Methods in the Exploration of Oligocene-Miocene Carbonate Reservoirs, Offshore Northwest Madura, Indonesia
David C. Carter, Dwi Mandhiri, Robert K. Park, Imron Asjhari, Syaiful Basyuni, Sergey Birdus, John P. Bradfield, Ary Iriawan, Meutia Nasfiah, M.A. Agung Nugroho
Indonesian Petroleum Association
... origin. A phase shift of +72 degrees and -18ms time shift has been applied to give positive polarity, zero-phase, and zero-time lag seismic data...
2005
Land, Marine and Transition Zone Seismic Operations in PPL 123, Papua New Guinea
Alan G. Fenwick, Robert J. Paul
Papua New Guinea (PNG) Petroleum Convention Proceedings
... gradient existed between it and the Turama River. This resulted in an effective phase shift of the tides and it was further discovered that the shift...
1993