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The AAPG/Datapages Combined Publications Database
Showing 3,218 Results. Searched 200,616 documents.
The Effects of Eolian Sorting and Abrasion Upon the Shapes of Fine Quartz Sand Grains
Jim Mazzullo, Donald Sims, David Cunningham
Journal of Sedimentary Research (SEPM)
... are reached. The first is that the wind preferentially transports spherical, rounded sand grains, and this can result in the isolation and accumulation...
1986
Oregon Basin Field, Wyoming
Paul T. Walton
Wyoming Geological Association
... reserve in excess of 150,000,000 barrels in the three producing horizons - the Permian Embar limestone, the Pennsylvanian Tensleep sandstone...
1947
Chapter 9: Mineral, Chemical, and Textural Relationships in Rhythmic-bedded, Hydrocarbon-Productive Chalk of the Niobrara Formation, Denver Basin, Colorado
Richard M. Pollastro, Carl J. Martinez
Rocky Mountain Association of Geologists
...). Although the chalk reservoirs of the Niobrara have permeabilities in excess of 0.5 md at shallow depths, faulting and associated fracturing greatly enhance...
2011
DEPOSITIONAL ENVIRONMENTS OF THE MANNVILLE GROUP (LOWER CRETACEOUS) IN THE TANGLEFLAGS AREA, SASKATCHEWAN
MALCOLM WILSON
Saskatchewan Geological Society
... to subrounded and moderately spherical. Sorting is moderate to good. As mentioned before, the grains range from silt to fine sand size. A negative...
1984
Application of Centrifugal Compressors for High Pressure Gas Cycling, Arun Field
Cathal Ahern
Indonesian Petroleum Association
... of North Sumatra, Indonesia is currently producing in excess of 1200 MMSCFD gas. Ultimately, facilities will be expanded to 2400 MMSCFD capacity for gas...
1980
Some Occurrences of Supergene Iron Sulphides in Relation to their Environments of Deposition
A. B. Edwards, G. Baker
Journal of Sedimentary Research (SEPM)
..., and show that in both samples the sulphur is present in excess of the amount required for the stoichiometric proportions of FeS2. Origin...
1951
First Applications of Novel Microproppant to Achieve Optimal Production and Enhance Hydraulic Fracture Treatment Placement - A Romanian Case History
Radu Patrascu, Gabrijel Grubac, Pedro Saldungaray, Enrico Annovi, Wadhah Al-Tailji
Unconventional Resources Technology Conference (URTEC)
... of microfractures. The material is also more erosive than other microproppants (such as silica sand, amorphous silica, and spherical ceramic grains), and thus can...
2020
Stevensite Oolites from the Green River Formation of Central Utah
Rodney Tettenhorst, George E. Moore, Jr.
Journal of Sedimentary Research (SEPM)
... of this study. These beds consist of spherical, oval, or flattened smooth shiny oolites that are light brown to purplish-brown when wet and light brown...
1978
Low-Temperature Oolitic Talc in Upper Proterozoic Rocks, Congo
Yves Noack, Alain Decarreau, Florent Boudzoumou, Roland Trompette
Journal of Sedimentary Research (SEPM)
.... The spheroids may be perfectly spherical but generally are deformed and flattened. In some samples they are silicified. XRD analysis of the spheroids...
1989
Subsurface Geology of the Mississippian System of Western Kiowa County, Kansas
S. B. Clark
Oklahoma City Geological Society
... have produced in excess of eleven million barrels of oil and 71 billion cubic feet of natural gas as of December 31, 1973. Exploration for hydrocarbons...
1979
Formation Stabilization: Is Bigger Better in Cationic Polymers?
Denise N. Benoit, Kristina Henkel-Holan, Michele Brown, Ron Morgan, Mike McCabe
Unconventional Resources Technology Conference (URTEC)
.... transitional vs. turbulent), size of reduced flow path, densities of fluid and particles, etc. For the simple case of a dilute concentration of spherical...
2019
Oil Exploration Analysis of Recent Carbonate Facies
Hugh J. Mitchell-Tapping
GCAGS Transactions
... deposited at or near the low tide zone in a protected environment. ANALYTICAL METHODS All the samples were washed with distilled water, the excess...
1998
Determination of Water Saturation in Vuggy Reservoirs Using a Combination of Log Data and the Maxwell-Garnett Equation: Permian Clear Fork Vuggy Dolostone, West Texas
G. B. Asquith
West Texas Geological Society
... that the Maxwell-Garnett Equation which is designed to model low frequency resistivity response in a series of large spherical pores (vugs) within finer...
2012
ABSTRACT: MORPHOLOGY, MINERALOGY AND CHEMISTRY CLASSIFICATION OF HIGH-ALUMINA FLY ASH PARTICLES
Jiangfeng Chen, Longyi Shao, Yuzhen Shi
The Society for Organic Petrology (TSOP)
... of a variety of micro-spherical, spheroidal, oval and irregular particles, including cenospheres, plerospheres, dermaspheres, vesicular spheres and dense spheres...
2006
Abstract: Bulk mineable gold potential in Nova Scotia: a new discovery
P. K. Smith
Atlantic Geology
..., colloform type appearance while others are completely spherical. Cellular type textures with concentric, or semi-circular zonation, is manifest by exotic...
1993
Geological Society of Malaysia Newsletter Number 35 (April 1972)
B. K. Tan editor
Geological Society of Malaysia (GSM)
... grains of quartz, varying in size from c. 100 microns to c. 1.5 JIlIn, and yellowish., crudely spherical bodies, whicn were provisionally :ideqtified...
1972
New Mathematical and "Stereograhic Net" Solutions to Problem of Two Tilts--With Application to Core Orientation: DISCUSSION
D. Jerome Fisher
AAPG Bulletin
... the stereographic projection of the intersections of the planes with the spherical surface, this problem is solved entirely on one half of the sphere. Thus...
1939
A Note on Thin Section Mechanical Analysis: NOTES
Sudhir Basumallick
Journal of Sedimentary Research (SEPM)
..., there is no difference between Mz (long) and Mz (short), or in other words all the grains are approximately spherical. Case II--The distance of this line from...
1964
Abstract: Mineralogy and Granulometry of Airborne Dust from a Cast Iron Foundry in Kuala Lumpur A Preliminary Study
T. F. Ng, J. J. Pereira, E. B. Yeap, S. Y. Yap
Geological Society of Malaysia (GSM)
... spherical, and is also known as cenosphere. Quartz particles are mainly subangular to angular. The coarser quartz grains often have clay and iron oxide...
1995
Origin and Distribution of Silica Lepispheres in Porcelanite from the Monterey Formation of California
John H. Oehler
Journal of Sedimentary Research (SEPM)
... are possibly rudimentary lepispheres (1.9 to 2.6 µm in diameter) consisting of a few platy crystals arranged in approximately spherical order (Fig...
1975
Palynoplanktologic Analysis of Some Black Sea Cores: Biology
Stefana Roman
AAPG Special Volumes
... as spherical bodies which represent various stages; some specimens have a conical shape, and others, which are very scarce, are short tubular fascicles...
1974
Microbial Biscuits of Vaterite in Lake Issyk-Kul (Republic of Kyrgyzstan)--Reply
Santiago Giralt, Ramon Julia, Jean Klerkx
Journal of Sedimentary Research (SEPM)
... section of these spherical forms, it is difficult to state that both spherical forms are identical. Vaterite occurrences reported by other authors show...
2002
Compaction and Porosity Evolution of Pliocene Sandstones, Ventura Basin, California: REPLY
John C. Wilson, Earle F. Mcbride
AAPG Bulletin
... undergone moderate to strong compaction. Figure 1 shows the thin section view of uncompacted, randomly packed, spherical, sand-size grains of uniform...
1989