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The AAPG/Datapages Combined Publications Database
Showing 254 Results. Searched 195,452 documents.
Geophysical Investigations Within the Colorado Mineral Belt Using New Inductive Electromagnetic Instrumentation
Paul B. Alexander
Earth Science Bulletin (WGA)
...) readings were determined. The phase shift, profile shapes, and intensities reflected physical properties of the conductor. The theoretical effective...
1968
Hydraulic fracture aperture estimation using low frequency DAS and DSS in Austin Chalk and Eagle Ford Shale
Xiaoyu Zhu, Jonathan Ajo-Franklin, Julia Correa, Yuanyuan Ma, Jaewon Saw, Linqing Luo, Kenichi Soga
International Meeting for Applied Geoscience and Energy (IMAGE)
... Fiber Optic Sensing (DFOS) techniques utilize the phase shift of backscattered laser energy to detect changes in strain along the fiber. Distributed...
2023
Fast viscoacoustic forward modeling method based on U-net Fourier neural operator
Wenbin Tian, Yang Liu
International Meeting for Applied Geoscience and Energy (IMAGE)
... operations and facilitating the phase-shift process across the entire domain. The FNO method effectively emulates the mathematical-physical behavior...
2023
VSP Guided Reprocessing and Inversion of Surface Seismic Data
R. Gir, Dominique Pajot, Serge Des Ligneris
Southeast Asia Petroleum Exploration Society (SEAPEX)
.... A gross time-shift of 2.04 ms was computed from the cross correlation function. A weighted average phase rotation filter was filtered over spectral...
1988
Technique and Methods of Geophysical Exploration in Canada
A. I. Bogdanov
Petroleum Geology: A Digest of Russian Literature
.... By means of the helicopter the gondola can be towed at a height of 30 m above the surface. With this form of surveying not only is the angle of phase shift...
1959
Frequency-dependent reflection characteristics of single thin layer and waveform inversion
Zhengyang Kuai, Danping Cao, Chao Jin
International Meeting for Applied Geoscience and Energy (IMAGE)
... propagation matrix, D represents the eigenvector matrix, and E represents the phase shift matrix E diag e i q h , e iq h , eiq h , ei q h...
2023
Evaluation of Logging While Drilling Technology, Offshore, East Kalimantan
S. Sutiyono
Indonesian Petroleum Association
... reading range Figure 5b. Phase Shift resistivity (RPS) is comparable to the Medium Phasor Induction log (IMPH) Figure 6. Both LWD and wireline data...
1992
4D Seismic Reservoir Characterization of a CO2 Flood: A New Technology
Sony R. Mohammad, Thomas L. Davis
Indonesian Petroleum Association
... phase, time-shift, frequency, and amplitude mismatch between the data, which might occur due to different acquisition parameters, soil condition...
2011
Bramberge Field, Federal Republic of Germany: Case Histories
A. Roll
AAPG Special Volumes
... of the Emsland wells. The reflection itself appears approximately 30 msec later in accordance with the phase shift due to the analog filtering...
1972
U.S. Gulf Coast Field Experience with Thin-Bed Well Log Analysis
Tony D. Lawrence , Ashok K. Sinha , Walter H. Fertl
GCAGS Transactions
... and Fernandez, 1987). The dielectric logging instrument measures the attenuation and the phase shift of the emitted electromagnetic wave between two...
1990
Well Interference Testing using Fiber Optics Production Analysis
Marcel A. Grubert, Xinyang Li, Todd Bown, J. Andres Chavarria
Unconventional Resources Technology Conference (URTEC)
... is scattered back to the surface. Measuring amplitude, phase shift and timing of those return signals, a distinct “map” of the fiber can be created. Since...
2021
Abstract: Robust Singular Spectrum Analysis for Erratic Noise Attenuation; #90187 (2014)
Ke Chen and Mauricio D. Sacchi
Search and Discovery.com
... will fast approximations to Under the signal in frequency the time delay in t-x domain or change to phase shift in freqeuncy in D SSA method. However...
2014
Abstract: Nonlinear Seismic Wave Propagation in Heavy Oil; #90224 (2015)
Wubing Deng and Igor B. Morozov
Search and Discovery.com
... 90 phase shift (blue line in Figure 4). Such phase-rotated reflection is controlled by the viscosity contrast. Note that similarly, strong nonlinear...
2015
Seismic Sedimentology of Cenozoic in Qinan Sag of Huanghua Depression, Eastern China
Xiaomin Zhu and Yanmei Dong
Search and Discovery.com
... phase shift Stratal slicing Interpretation 8 Ricker Wavelet as Function of Phase 0 Impedance 90 Ricker 0 After Hongliu Zeng 2001 9 3450 TR546...
Unknown
Geosteering through Challenging Fractured Limestone Reservoir Becomes Achievable Utilizing High Definition Multi-Layer Boundary Mapping Technology Case Study from a Deep Gas Reservoir; #41828 (2016)
Saad A. Al-Ajmi, Chinmaya Pattnaik, Ahmed E. Al-Dawood, Qasem Dashti, Abdul Aziz H. Al-Failakawi, Sandeep Chakravorty, Chandan J. Keot, Khaled M. El-Derini
Search and Discovery.com
... with the novel concept of tilted antennas to provide directional and deep phase shift and attenuation measurements at multi depths of investigations...
2016
Understanding the Seismic Wavelet; Steven G. Henry; Search and Discovery Article #40028 (2001)
Search and Discovery.com
2001
Do Gas Hydrates Occur in Alaminos Canyon, Gulf of Mexico?
Brian C. Tost, Ann E. Cook
Unconventional Resources Technology Conference (URTEC)
... within the target sand with values ranging from 1.3 to 2.1 -m in Hole AC 21-B. Phase-shift and attenuation propagation resistivities for 400 kHz...
2013
Characteristics of Microzonation Modelling in Reservoir Evaluation
Search and Discovery.com
N/A
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
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
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