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The AAPG/Datapages Combined Publications Database
Showing 1,445 Results. Searched 200,636 documents.
Microseismic imaging with three-component borehole sensors
Jakob B. U. Haldorsen
International Meeting for Applied Geoscience and Energy (IMAGE)
... the ±45° smearing from the cosine tapering implied by equation 4. This section is compared to a section through an image cube obtained using "fat rays...
2022
RADON DETECTION USING THERMOLUMINESCENT DOSIMETERS IN URANIUM EXPLORATION
RICHARD CECIL SMITH
Saskatchewan Geological Society
... of their initial energy. The alpha sensitivity is, therefore, typically 200 times greater than for an equal number of background rays. A quality assurance...
1978
The application of phased-array vibrator system in deep seismic exploration
Minghao Yu, Xiangbo Gong, Xiaojie Wan
International Meeting for Applied Geoscience and Energy (IMAGE)
... is � , � is the constant phase difference between the two adjacent sources. � is a point far from the source, so the rays from each source to point...
2022
Biogenic Sedimentary Structures–Trace: Fossils–Of The Ouachitas
C. Kent Chamberlain
Dallas Geological Society
... and from 30 to 80 mm in length, and most are inclined to the bedding at approximately 25 degrees. Individual rays are rounded, elongate, have a bulbous...
1975
Australian National Ocean Bottom Seismograph Fleet Advances Conventional Exploration
Alexey Goncharov, Michal Malinowski, Dejan Sekulic, Ashby Cooper, Peter Chia, Alexander Gavrilov, Garrick Paskos
Australian Petroleum Production & Exploration Association (APPEA) Journal
... with the OBS-derived velocities representing horizontal velocities as driven primarily by horizontally travelling rays. Combination of the two models can...
2017
The Upper Koyukuk, Alaska
Robert D. Ohrenschall
Tulsa Geological Society
... of the winter months. Lighting effects are particularly beautiful in winter. In the mountainous country of the Koyukuk the low, nearly horizontal rays...
1936
Biogenic Cross-Lamination Produced by the Pistol-Shrimp Alpheus bellulus in Microcosm Experiments
Duncan McIlroy
Journal of Sedimentary Research (SEPM)
... the Red Sea: Crustaceana, v. 75, p. 351–357. Gregory, M.R., Ballance, P.F., Gibson, G.W., and Ayling, A.M., 1979, On how some rays (Elasmobranchia...
2010
Integrated Continental-SheIf and Marginal Marine Environmental Research Program: Sediments, Organisms, and Waters in New York Bight and Vicinity
Gerald M. Friedman, John E. Sanders
Atlantic Geology
... analysis technique using X-rays: Jour. Sedimentary Petrology, v. 39, p. 1371-1383. FRANK, WILLIAM and FRIEDMAN, G.M., in preparation, Continental-shelf...
1970
Identification of Oil Water Contact Movement in the Belida Field With Cased-Hole Logs
Achmad Muzamil, Cliff Martin, Teddy H. Komaroedin, Susi Winarti, Atang Barliana
Indonesian Petroleum Association
... and oxygen reactions with high-energy “fast” neutrons producing characteristic gamma rays (Figure 7). From this measurement, one can distinguish between...
2007
Full Wave Acoustic Logging: Some Examples
John W. Minear
Southeast Asia Petroleum Exploration Society (SEAPEX)
... of penetration through a low-velocity, damaged zone is illustrated in Figure 3. Figure 3. Depth of penetration of acoustic rays around a damaged borehole...
1984
Simultaneous waveform inversion of seismic-while-drilling data for P-wave velocity, density, and source parameters
Jinji Li, Scott Keating, Nasser Kazemi, Roman Shor, Kristopher A. Innanen
International Meeting for Applied Geoscience and Energy (IMAGE)
... experiments), if available are major contributors to the construction of low-wavenumber components of an FWI model. Seismic rays tend to bend toward high...
2022
Optimized stacking of migrated offset vector tiles for Tengiz PSDM image enhancement
Tianjiang Li, King Sim Lee, Bin Gong, Kai Yang, Kai Zhang, Assem Bibolova, Zhanibek Katrenov
International Meeting for Applied Geoscience and Energy (IMAGE)
... function. We conducted a ray-based azimuthal illumination analysis with the acquisition geometry and final velocity model. Pairs of rays are shot from...
2022
Wave Climate Effects Upon Changing Barrier Island Morphology, Kouchibouguac Bay, New Brunswick
Edward Bryant
Atlantic Geology
... Inlet, adjacent to Blacklands Gully or north of Little Gully. Divergence of wave rays occurs most frequently near the three inlet mouths...
1978
Suppression of coherent and random noise using adaptive thresholding method in seismic-while-drilling
Yue Ma, Yujin Liu
International Meeting for Applied Geoscience and Energy (IMAGE)
..., the locally linear coherent noise is partitioned in a sector area of the f-k domain bounded by angular rays with the slop...
2022
High Expectations: Morocco
Jane Whaley
GEO ExPro Magazine
... over 500 MMboe. Evening shadows and the last rays of sunset playing against the courtyard of La Grande Mosquée Hassan II in Casablanca, a seaside...
2012
Recent Sedimentation as a Key to Ancient Deposits: Typical Modern Basins
Philip H. Kuenen
AAPG Special Volumes
... of the corpse, probes with his drill, X-rays with his seismograph, palpates with his gravimeter. But however great his knowledge of anatomy may become, he...
1958
Utilizing the Two-Way Wave Equation: Reverse Time Pre-Stack Depth Migration
Matthew H. Karazincir, Clive M. Gerrard, Andrew Long, Lynn B. Comeaux
Indonesian Petroleum Association
... of the same inline seen in Figures 5 and 6. Turning rays are used and a strong salt-sediment boundary is imaged; however, all the sediment pinch-outs...
2008
Photogeology, A Tool for Petroleum Exploration in Northwestern Colorado
B.P. Harder
Rocky Mountain Association of Geologists
...; and at a little spring of bad water, where we halted to noon, we had not even the shelter of these from the hot rays of the sun. At night we encamped...
1962
A Preliminary Note on the Late Cretaceous Sharks of the Chatsworth Formation at Dayton Canyon, Simi Hills, Los Angeles County, California
Bruce J. Welton, John M. Alderson
Pacific Section SEPM
.... Dept. Geol., Univ. Calif. Pubs. v . 7 , no. 11:243-256. Jordan, D. S. and Hannibal, H . 1923. Fossil sharks and rays of the Pacific slope of North...
1981
Application of Anomaly Impedance in an Integrated Geological Modeling for a Brownfield
Said Sabbeq, Tutuka Ariadji, Sonny Winardhie, John Hisar Simamora
Indonesian Petroleum Association
... or distributaries mouth bar (DMB). Anomaly Impedance Application in Facies The crossplot result between anomaly impedance and gamma rays for the studied well...
2009
Application of Zero Offset 2D CRS-Stack Method for Low Fold Data: Synthetic and Real Data Examples
R. Sule, A. Hendriyana, P. D. Anggraini, Fatkhan, Alfian, Sardjito, Waluyo, Adriansyah
Indonesian Petroleum Association
... Edge, 21(10), hal 1010-1015. Bortfeld, R., 1989, Geometrical Ray Theory: Rays and Traveltimes in Seismic Systems (2nd Order Approximations...
2009
Accelerated Kirchhoff depth migration on CPU-GPU heterogeneous computing systems
Yujin Liu, Hongwei Liu, Yi He, Fuhao Qin, Yue Du
International Meeting for Applied Geoscience and Energy (IMAGE)
... tracing or by Eikonal equation solver. Figure 1 illustrates how the downgoing and the upgoing rays are traced through an interval velocity function 7(3...
2022
The Uranium Mineralogy of the Colorado Plateau and Adjacent Regions
John W. Gruner
Utah Geological Association
.... This is not distinguishable as the rule from the fully hydrated mineral except optically and by X-rays. Table II. Vanadium Minerals in Sedimentary Rocks A few...
1954
New Developments in Acoustic Logging
J. Zemanek, D. M. Williams, R. L. Caldwell, C. L. Dennis, F. A. Angona
Indonesian Petroleum Association
... the borehole wall. The rays impinging upon the borehole wall at their respective critical angles are refracted along the wall and become the respective P...
1985
Efficient physics-informed Bayesian inversion of VSP and hydrofrac data
Tian Qiao, George Turkiyah, Gerard T. Schuster
International Meeting for Applied Geoscience and Energy (IMAGE)
... a region of size 1-2 wavelengths around the migration point. 3. For imaging of point sources, the traveltimes of direct rays from each gridpoint to each...
2022