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The AAPG/Datapages Combined Publications Database
Showing 1,444 Results. Searched 200,357 documents.
Abstract: The Role of X-ray Fluorescence in Source Rock Analysis
Philip R. G. Sedore, Ricardo L. Silva
Atlantic Geology
... rock intervals. An XRF machine completes an analysis by bombarding a core or cutting sample with a spectrum of X-rays. These high energy...
2014
ABSTRACT: Ray Tracing in Two-Dimensional Inhomogeneous Media, by Y. Xu and John A. McDonald; #91035 (2010)
Search and Discovery.com
2010
Radiation Logging in Shallow Bore Holes: ABSTRACT
Robert B. Moran, Jr.
AAPG Bulletin
... a French physicist discovered that gamma rays would fog a photographic plate, much progress has been made in the field of nuclear physics...
1957
ABSTRACT: Use of A Portable 3-D Laser Scanner for Digitally Capturing Outcrop Topography And Lithology in High Spatial Resolution; #90007 (2002)
Seiichi Nagihara, Jared Wright, Joe Hargis, Ramey Goss, Glenn Hill
Search and Discovery.com
... with optical rays. The rays produce reflections when they encounter solid objects. The instrument records the angle of each ray and measures the travel time...
2002
High-Resolution X-Radiography of Laminated Sediment Cores: RESEARCH METHOD PAPER
Thomas J. Algeo, Mark Phillips, Jacek Jaminski, Matthew Fenwick
Journal of Sedimentary Research (SEPM)
... sample is exposed to X-rays from an overhead point source for a fixed period of time. In the resulting X-radiographs, compositional variation...
1994
Fault Shadow Issues and Resolution in Model and Real Data
Andrew J. Davidoff, Ika Ratna Novianti
Indonesian Petroleum Association
... tracing experiments. The results of these ray-tracing experiments are shown in Figure 2 through 9. Zero offset rays are used to generate synthetic...
2002
The Exploration Desk: Quantitative Photogeology Using the Multiplex Projector: Part I: The Multiplex Instrument
Lyle G. Trorey
CSPG Bulletin
... suitable photographs of the area, instrumental photogrammetry can do this by intersecting light rays to reconstitute a three dimensional scale model...
1955
A Comparison of Air Photograph and Computer Simulated Wave Refraction Patterns in the Nearshore Area, Richibucto, Canada and Jervis Bay, Australia
Edward A. Bryant
Atlantic Geology
...). A comparison of the diagrams shows that the Wilson program, for most rays, responds slightly more to changes in depth then does the Dobson program...
1974
Interpretation of Neutron Well Logs
William L. Russell
AAPG Bulletin
... which records radioactivity or natural gamma rays. This log type is therefore called a radioactivity or natural gamma-ray log in this paper. In the oil...
1952
Tracerscan – A Spectroscopy Technique for Determining the Distribution of Multiple Radioactive Tracers in Downhole Operations
L. L. Gadeken, H. D. Smith Jr., Choung Nguyen
Indonesian Petroleum Association
... the individual gamma rays emitted by specific radioactive traces. Because of the high spectral resolution of the CSNG sonde, the uphole software can...
1986
Fracture Comparisons from Vertical and Horizontal Wells: a View from the FMI
Jonathan Collier, Joe Beck, Roger Reinmiller, Dan Martin
West Texas Geological Society
... of these fractures was correlated back to the spectral and natural gamma rays in the hopes to provide a low cost technique to estimate their presence...
2017
Computer Simulation of Nearshore Sediment Transport: ABSTRACT
Graeme F. Bonham-Carter
AAPG Bulletin
... on which traces wave rays (calculating wave heights at intervals) from deep-water offshore into the shallow-water breaker zone; and (3) a sediment...
1969
Depositional Facies of Cretaceous Spring Canyon Member, Blackhawk Formation, Book Cliffs, Utah: ABSTRACT
James D. Howard, Diane Kamola, Armando Salazar
AAPG Bulletin
... effects. The transitional facies contains abundant marine indicators including oyster shells, terrido borings, Ophiomorpha, and holes excavated by rays...
1982
Abstract: Sparse Kirchhoff Migration using a Quasi-Newton Optimization Algorithm, by A.A. Aldawood and I. Hoteit, #90188 (2014)
Search and Discovery.com
2014
-- no title --
user
Search and Discovery.com
... information on the structure and velocity of the nearsurface volcanic rocks. The focussing of model rays allows for estimation of the thickness of the Endako...
2013
Advanced Chromatography, Cuttings Analysis and Well Logging Integration: An Optimized Petrophysical Approach, #41838 (2016).
Carlos Vargas Cana, D. Llanos, N. DeCastro, S.Vija
Search and Discovery.com
... Reservoir Others. Optimized Data Acquisition LWD/WL X Rays Fluorescence X Rays Diffraction Pyrolysis Advanced Chromatography Triple Combo/ Quad Combo...
2016
Applications of the Densilog
R. H. Anderson
Oklahoma City Geological Society
... to in its use. Cobalt 60 emits high energy level gamma rays making its use ideal for density logging because of the penetrating characteristics...
1958
Plane-Table Survey Underground: GEOLOGICAL NOTES
Gail F. Moulton
AAPG Bulletin
.... The rod was lighted by placing the acetylene lamp on the ground in front and slightly to the side of the rod, facing it, while the rays from...
1927
Transmitted Infrared Photography: Cincinnatian Limestones: NOTES
Syed A. Ali, Malcolm P. Weiss
Journal of Sedimentary Research (SEPM)
... structures. Carbonates respond so uniformly to X-rays that structures are not revealed. Transmitted infrared is thus preferred for carbonates. ALI...
1968
X-Radiography of Rocks with I-125 Source: GEOLOGICAL NOTES
Malcolm P. Weiss
AAPG Bulletin
...-rays (abs.): Jour. Nuclear Medicine, v. 5, p. 310. Cameron, J. R., and J. Sorenson, 1963, Measurement of bone mineral in vivo: an improved method...
1966
Abstract: New Vertebrates from the Paleogene of Eastern Texas, by Thomas A. Stidham and Tracey Janus; #90085 (2008)
Search and Discovery.com
2008
Image - Rays and the Treatment of Inhomogeneity in Migration
L. Hatton
Southeast Asia Petroleum Exploration Society (SEAPEX)
...Image - Rays and the Treatment of Inhomogeneity in Migration L. Hatton 1980 11 22 The main object of this paper is to review progress...
1980
Well Logging by Radioactivity
William L. Russell
AAPG Bulletin
... by gamma rays in the gas in an ionization chamber contained in the subsurface instrument. It has been found that each formation tends to produce...
1941
Geochemistry and Crystal Morphology of Aragonite Cements of Mixing-zone Origin, Barbados, West Indies
Tod N. Kimbell and John D. Humphrey
Journal of Sedimentary Research (SEPM)
... (1) loosely packed, randomly oriented rays (< mm long), (2) coalescing splays of elongote fibers (up to 5 mm long) radiating from the substrate...
1994
Phase-Ray Maslov Summation: A Complete Finite-Frequency Ray Method
Tianfei Zhu
Search and Discovery.com
.... The phase-ray method, on the other hand, can model scattering-related wave phenomena, but ignores the contributions from neighboring non-geometric rays...
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