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The AAPG/Datapages Combined Publications Database
Showing 1,444 Results. Searched 200,357 documents.
Utilizing Saturation Logging to Identify Bypassed Oil in a Waterflood Reservoir: Kaji Semoga Field Case Study
Puti Permata, Karina Asti Puri
Indonesian Petroleum Association
..., the formation nucleus will release gamma rays in order to become grounded. Figure 2 shows the tool configuration and data processing principal of PNN...
2010
History of Uranium and Development of Colorado Plateau Ores with Notes on Uranium Production in Utah
R. E. Cohenour
Utah Geological Association
... penetrating rays which he designated as x-rays. Later Professor Henri Becquerel, while investigating phosphorescent substances, found that uranium...
1967
PhotonAssay Efficient &bulk gold analysis in the modern world
Chenoa Tremblay, Gary Wheeler, Anthony Oteri
Petroleum Exploration Society of Australia (PESA)
... is an instrument utilising high-energy X-rays but reimaged for the modern world with full robotics and ability to keep up with the high demands of mining...
2019
Nonparametric Bayesian approach for robust depth uncertainty estimation from seismic velocity and anisotropy tradeoffs
Jinsong Chen, Sizhuang Deng, Min Yang, Andrey Shabelansky, Cory Hoelting, Huafeng Liu, Maisha Amaru
International Meeting for Applied Geoscience and Energy (IMAGE)
.... The methodology of Liu et al. (2022) for calculating semblances from 3D Gaussian beam gathers depends on many factors. Gaussian beam rays are obtained first from...
2024
X-ray Radiography in the Study of Structures in Homogeneous Sediments
Wm. Kenneth Hamblin
Journal of Sedimentary Research (SEPM)
... of making a picture by some form of penetrating radiation such as X-rays or gamma rays. It has been widely used since 1895 in medicine, industry...
1962
Explosion Seismology Studies of Active and Passive Continental Margins: Resources, Comparative Structure, and Eustatic Changes in Sea Level
B. Keller , B. T. R. Lewis , C. Meeder , C. Helsley , R. P. Meyer
AAPG Special Volumes
... be continental material. Unprimed rays are for velocities as shown. Ray 2^prime is for the same structure with all the material of the triangular region...
1979
Radioactivity Survey in Southwest France
E. N. Tiratsoo
AAPG Bulletin
... of surface rocks (about a meter) can affect the instrument, since the absorption of gamma rays from lower levels is almost complete. However, provided...
1950
A High-Definition Mineralogical Examination of Potential Gas Shales; #50290 (2010)
Jon Sliwinski, Jay Harrington, Matt Power, Peta Hughes, Bernie Yeung
Search and Discovery.com
.... In addition characteristic x-rays are generated from a depth of approximately 2µm depending on density of the sample, this is effectively...
2010
Let's Use More of the Electromagnetic Spectrum
Allen M. Feder
GCAGS Transactions
... to a high ultraviolet atmospheric absorption region at 0.28 microns -- a 0.12 total micron range. X-rays The next major band of electromagnetic radiation...
1964
Implementation of the DIPSCAN Method to Estimate Boundary Dips in Complicated Structures by VSP Data
A. A. Tabakov, V.N.Ferentsi, H. Gravini
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... , t ) || ⋅ cos θ ( z , t ) , First of all we should calculate direct wave time field in a vicinity of a well. To not trace rays through unknown media...
2006
Are There Better Alternatives to Standard Rose Diagrams?
Neil A. Wells
Journal of Sedimentary Research (SEPM)
... consideration include (1) representing 1° classes with rays of dots ("dot diagrams", allowing linear scaling), and (2) overcoming arbitrariness...
2000
The Radiation Guard: A NEW METHOD OF LOGGING IN LOW RESISTIVITY MUDS
C. W. Denney
Panhandle (Texas) Geological Society
... of hydrogen and chlorine. These atoms emit gamma rays upon capturing the thermal neutrons. The gamma ray emitted upon capture is the induced gamma...
1957
Discussing Demigration Uncertainties Applied to Active Focused Seismic Monitoring
Baptiste Penot, Bruce Webb, Michele Buia, Gianluca Dell’Elce
Carbon Capture, Utilization and Storage (CCUS)
.... Perturbated spot 1 gives results within the 10 m range while spot 5 stays in the 70 m range with rays finding solutions up to 270 m. Such variability...
2025
Application of Sonic Waveform Attributes in Reservoir Studies
R. Gir
Geological Society of Malaysia (GSM)
.... The shear/modes are strong because the acoustic rays can be totally reflected inside the borehole, making the borehole a wave guide that traps...
1990
Anisotropic full-azimuth velocity model building using joint reflection-refraction tomography
Matan Shustak, Itai Sharabi, Orly Kletenik-Edelman, Elive Menyoli, Ike Imala, Ronit Levy, Zvi Koren
International Meeting for Applied Geoscience and Energy (IMAGE)
... the refraction and reflection rays (𝑟𝑓𝑟, 𝑟𝑓𝑙). 𝜕𝐺 𝜕𝑚 are the Hamiltonian derivatives matrix with respect to the parameter perturbations...
2022
The Porosity Logs
John H. Doveton
Special Publications of SEPM
... had a single detector and measured either the quantity of capture gamma rays or epithermal neutrons. The more recent devices have two detectors...
1994
Method of Spatial Observations of RNP Under the Conditions of the Reef Zone of the Orenburg Cis-Urals
I. A. Mushin
Petroleum Geology: A Digest of Russian Literature
... for determining A and ϕ by graphic means (4). Projecting the plane of seismic rays, and plotting the vectors r ¯ 1 , r ¯ 2 , and n...
1963
Seismic Imaging in Anisotropic Media. or... "A Better Way to Moveout and Migrate Long Offset Data"
Rolf Klotz, Martin Bayly, Sue Downie, Swee Leng
Indonesian Petroleum Association
... in shallower layers describing a curved ray path. Consequently rays arrive at the offset receiver earlier than would be predicted by using the hyperbolic...
2000
Evaluation of Seismic Exploration in Sub-Volcanic Reservoir Area by Synthetic Seismic Modeling
Yulia Nur Fajrina, Muhammad Ghazalli
Indonesian Petroleum Association
... the faster way, so the wave will come through the high velocity layer. At the left of the model, it present many rays that can image the seismic model well...
2015
Clay Minerals of the Neuse River Estuary
George M. Griffin, Roy L. Ingram
Journal of Sedimentary Research (SEPM)
... pattern was obtained which matched the original cloudy pattern. The content of material amorphous to X-rays was surprisingly high, ranging from 50 to 75...
1955
Transmitted Infrared Radiation: A Simple Method for Studying Sedimentary Structures: NOTES
Donald C. Rhoads, Daniel J. Stanley
Journal of Sedimentary Research (SEPM)
.... ROLFE, W. D. I., 1965, Uses of infrared rays, p. 345-350 in Kummel, Bernhard, and Raup, D. M., eds., Handbook of paleontological techniques. W. H. Freeman...
1966
A Cordaixylon axis from well-drained alluvial plain facies in the Lower Pennsylvanian Joggins Formation of Nova Scotia
Howard J. Falcon-Lang
Atlantic Geology
... oval, araucarioid pits with indistinct borders (Fig. 2J). Tangential tracheids walls are blank. Rays are uniseriate, 1-5 (locally up to 15) cells...
2007
Radioactivity and Organic Content of Some Paleozoic Shales
Roland F. Beers
AAPG Bulletin
..., "Cosmic Rays and Radioactive Potassium," Phys. Rev., Vol. 55 (1939), p. 316. 13. K. L. COOK, "The Relative Abundance of the Isotopes of Potassium...
1945
Abstract: Near-Surface Volcanic Rocks in the SE Nechako Basin, BC: Results of Interpretation of Seismic Reflection Data using First-Arrival Tomographic Inversion; #90171 (2013)
Nathan Hayward and Andrew J. Calvert
Search and Discovery.com
... the thickness and extent of Eocene Endako Group volcanic rocks near well b-82-C, where rays converge on underlying high-velocity (3900 ms-1) sandstone...
2013
Abstract: ERT and Seismic Tomography in Identifying Subsurface Cavities; #90172 (2014)
Grey I. Riddle, Craig J. Riddle, Douglas R. Schmitt
Search and Discovery.com
... was then post processed with minor editing to gather and first breaks, resulting in 9312 rays. Examples The resistivity data here was collected then post...
2014