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The AAPG/Datapages Combined Publications Database
Showing 3,218 Results. Searched 200,616 documents.
Surface Production Equipment: Part 9. Production Engineering Methods
James Jennings
AAPG Special Volumes
... (Figure 2), horizontal (Figure 3), and spherical (Figure 4). Horizontal separators are found in both the single tube and double tube design. Advantages...
1992
Effect of Surface Conductance on Drilling-Mud Resistivity: GEOLOGICAL NOTES
Norman Street
AAPG Bulletin
... be strictly true for a dilute suspension of spherical particles, for a concentrated suspension of spheres a more complicated relationship has been...
1956
Abstract: Microbialites in Zechstein Cycle 2 Carbonates (NE England and Poland): Types and Source Rock Perspectives; #90153 (2012)
Mirosław Słowakiewicz and Maurice E. Tucker
Search and Discovery.com
... fabrics. Micrite clots are mainly formed by grey dolomite surrounded by anhydrite cement and spherical bodies. Thrombolites, probably formed by coccoid...
2012
Paleohydrographic influences on Permian radiolarians in the Lamar Limestone, Guadalupe Mountains, west Texas, elucidated by organic biomarker and stable isotope geochemistry
Paula J. Noble, Hiroshi Naraoka, Simon R. Poulson, Eri Fukui, Yuxi Jin, Sarah O'Connor
PALAIOS
...), and spherical forms (largely Copicyntra erinacea). Entactinarians, such as Stigmosphaerostylus parapycnoclada and S. wildei are rare. Hegleria...
2011
A Study of Porosity and Grain Relationships in Experimental Sands
A. Gaither
Journal of Sedimentary Research (SEPM)
... varies End_Page 184------------------------ from spherical to platy. The minimum porosities were for grains that were "mildly and uniformly disc...
1953
Simulation of Gas Adsorption and Capillary Condensation in Shale Nanopores Using Lattice Boltzmann Modeling
Rui Xu, Maša Prodanović, Christopher J. Landry
Unconventional Resources Technology Conference (URTEC)
... lattice DFT or LDFT [11]) have been used to model multilayer adsorption and capillary condensation in nanopores of slit, spherical or cylindrical...
2018
Formation of Hydrocarbons from Fatty Acids by Alpha-Particle Bombardment
C. W. Sheppard , W. L. Whitehead
AAPG Bulletin
... at reasonable cost. It is used for medical treatment and at times certain hospitals have an excess above their Fig. 1. Radium and decay products. End_Page 35...
1946
Possible Inorganic Origin for Stromatactis in Calcilutite Mounds in the Tully Limestone, Devonian of New York
Philip H. Heckel
Journal of Sedimentary Research (SEPM)
... bubbles of exsolving natural gas are more spherical and smaller than typical stromatactis (Shinn, 1968b). A vertically elongate cavity in the Tully...
1972
The Significance of Contorted Bedding in Upper Ordovician Sediments of the Oslo Region, Norway
Patrick John Brenchley, Geoffrey Newall
Journal of Sedimentary Research (SEPM)
...). Where excess pore water escapes from a sand there will only be a brief episode of fluidisation but again there are likely to be definite paths...
1977
Rapid and Widespread Generation of Recent Oolitic Hardgrounds on a High Energy Bahamian Platform, Eleuthera Bank, Bahamas
Jeff Dravis
Journal of Sedimentary Research (SEPM)
... and containing free skeletal debris, FIG. 4. [Grey Scale] Active oolitic sand. (A) Active oolitic sand characterized by spherical to sub-spherical shapes...
1979
5 Thermal Anomalies
P. E. Gretener
AAPG Special Volumes
... of the Simplon tunnel with water invasions in excess of 1 m3/s. Today tunnel temperatures can be forecast using the same computer techniques as shown in more...
1981
Grain-Size Analyses of Mica Within Sediments and the Hydraulic Equivalence of Mica and Quartz
Paul D. Komar, Jumpei Baba, Bingquan Cui
Journal of Sedimentary Research (SEPM)
... as a submarine channel of a deep-sea fan, naming it Doheny Channel, foraminifera assemblages indicating oceanic water depths in excess of 600 to 1,200...
1984
Fluid Inclusion Temperatures in Diagenetic Quartz Reset by Burial: Implications for Oil Field Cementation: Chapter 4: CONSTRAINTS ON DIAGENETIC PROCESSES
R. Stuart Haszeldine, Mark Osborne
AAPG Special Volumes
..., a density change of only 3% is needed to produce a temperature increase from 100 to 150°C, equating to a spherical diameter change from 5 to 5.05 µm...
1993
Diagenetic Albitization of K-Feldspar and Plagioclase in Sandstone Reservoirs: Thermodynamic and Kinetic Modeling
Mohamed Ben Baccar , Bertrand Fritz , Benoit Made
Journal of Sedimentary Research (SEPM)
... in excess of 4000 m (> 125°C). In Figure 2 it can be seen that with increasing temperature the albite + illite + quartz stability field enlarges...
1993
Simulations of the Effects of Diagenesis on the Evolution of Sandstone Porosity
Cathal G. Dillon, Richard H. Worden, Stuart A. Barclay
Journal of Sedimentary Research (SEPM)
.... This new electron configuration is unstable, and the electrons return to their original configuration after the excitation has been removed. The excess...
2004
Magnetic Anomalies and Crustal Structure in Eastern Gulf of Mexico
D. I. Gough
AAPG Bulletin
...., S. Hendricks, W. E. Daniels, and D. C. Jensen, 1964, Computation of the main geomagnetic field from spherical harmonic expansions: N.A.S.A. Pub. TMX...
1967
The Structure and Diagenesis of Rhizoliths from Cayman Brac, British West Indies
Brian Jones, Kwok-Choi Ng
Journal of Sedimentary Research (SEPM)
...) isolated calcite rhombs, 3) calcified spherical bodies, 4) Types I and II calcified epilithic and chasmolithic filaments, and 5) grain-coating...
1988
Identification and Recording of Particulate Sedimentary Organic Matter
Stanley A.J. Pocock
Special Publications of SEPM
... small, spherical or subspherical pollen grains which may, or may not, exhibit an apertural opening or pseudopore. Germination is either via...
1982
Dynamics and deposition of sediment-bearing multi-pulsed flows and geological implication
Viet Luan Ho, Robert M. Dorrell, Gareth M. Keevil, Robert E. Thomas, Alan D. Burns, Jaco H. Baas, William D. McCaffrey
Journal of Sedimentary Research (SEPM)
..., A., Vasile, M., Sefcik, J., and Mulholland, J., 2015, Estimation of particle size distribution and aspect ratio of non-spherical particles from chord length...
2019
Origin of Caballos and Arkansas Novaculite Formations
David E. Park, Jr. , Carey Croneis
AAPG Bulletin
... have a consistent crystallographic orientation. The polar spines are parallel with the bedding of the formation (Fig. 10). Previously, only spherical...
1969
Petrography-Porosity Relations in Carbonate-Quartz System, Gatesburg Formation (Late Cambrian), Pennsylvania
Richard E. Smith
AAPG Bulletin
... these studies are not directly applicable to natural sediments, which are rarely of uniform grain size and generally do not consist of truly spherical grains...
1969
Mathematical modeling of microcrack growth in source rock during kerogen thermal maturation
Yunfei Yang, and Gary Mavko
AAPG Bulletin
...., and W. Proffer, 1984, Engineering formulas for fractures emanating from cylindrical and spherical holes: Journal of Applied Mechanics, v. 51, no. 4, p...
2018
The Possible Role of Nannobacteria (Dwarf Bacteria) in Clay-Mineral Diagenesis and the Importance of Careful Sample Preparation in High-Magnification SEM Study
Robert L. Folk , F. Leo Lynch
Journal of Sedimentary Research (SEPM)
... artifacts caused by gold coating times in excess of one minute; we strongly recommend a 30-second coating time. Bacterial growth of clay minerals may...
1997
Experimental Modeling of the Spatial Distribution of Grain Size Developed in a Fill-and-Spill Mini-Basin Setting
Rufus L. Brunt, William D. McAffrey, Benjamin C. Kneller
Journal of Sedimentary Research (SEPM)
... of the tank are designed to allow excess suspension to drain off the table, preventing sidewall reflections. The area under the table acted as a sump...
2004
Obscure Nature of Petroleum Migration and Entrapment
John C. Cartmill
AAPG Bulletin
.... Consequently, it generally is believed that oil saturation well in excess of 20 percent is required to attain mobility. Stains of residual oil...
1976