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The AAPG/Datapages Combined Publications Database
Showing 3,149 Results. Searched 197,286 documents.
Organic-Matter Pores: New Findings from Lower-Thermal-Maturity Mudrocks
Robert M. Reed
GCAGS Journal
... matter with spherical holes, the organic-matter is a composite grain made up of smaller, spherical organic-matter bodies. These organic-matter bodies vary...
2017
Underground Stresses
A. E. Scheidegger
CSPG Bulletin
.... Gough, 1926, "On the Concentration of Stress in the Neighborhood of a Small Spherical Flaw, and on the Propagation of Fatigue Fracture in 'Statistically...
1961
Effects of Transportation on Sedimentary Particles
R. Dana Russell
Special Publications of SEPM
.... The evidence, however, is not sufficient to prove whether wind or wave action s most effective in rounding sand grains. Dune sands appear to show...
1955
Recent Calcareous Stromatolites from Laguna Mormona (Baja California) Mexico
Robert J. Horodyski, Stephen P. Vonder Haar
Journal of Sedimentary Research (SEPM)
...--from a few cells enclose within a spherical sheath to hundreds of cells forming attached mammillate colonies. These colonies, occurring in the organic...
1975
Effects of Transportation on Sedimentary Particles: Part 1. Transportation
R. Dana Russell
AAPG Special Volumes
..., is not sufficient to prove whether wind or wave action is most effective in rounding sand grains. Dune sands appear to show the best rounding...
1939
Microfractures Due to Overpressures Caused by Thermal Cracking in Well-Sealed Upper Devonian Reservoirs, Deep Alberta Basin
Xiomara M. Marquez , Eric W. Mountjoy
AAPG Bulletin
... pore measurements refer to diameter), irregular vugs (0.5-6 cm), spherical intraskeletal pores, and minor polyhedral intercrystalline pores. Tabular...
1996
ANOXIC SULPHIDIC DIAGENESIS IN THE ORDOVICIAN WINNIPEG FORMATION OF SASKATCHEWAN
PIER L. BINDA
Williston Basin Symposium
... an organic filament. E: pyrite replacement of a nostocacean filament. F: framboidal pyrite replacing spherical...
1991
Red Bed Formations in the Aspen Region, Colorado
Val L. Freeman, Bruce Bryant
Rocky Mountain Association of Geologists
... are symmetrical with wavelengths less than 5 cm, and the sandstones and siltstones contain rounded, highly spherical grains 1- to 2-mm in diameter. The Chinle...
1977
Impact of Petroleum-Expulsion Fractures on Productivity of the Bakken Shales: A Geological Interpretation of Pressure Transient Behaviors
Mohammed Al Duhailan, Steve, Sonnenberg
Unconventional Resources Technology Conference (URTEC)
... curves separation. The Three Forks and Middle Bakken pressure transient behaviors imply spherical flow which indicates that there is always contribution...
2014
Grain-Size Distribution Using Log-Probability Plots: DISCUSSION
J. P. Syvitski, J. W. Murray
CSPG Bulletin
..., a tabular or angular grain may saltate sooner than a spherical grain which is more able to roll. Bagnold (1973) observed that contemporaneous...
1977
Submarine CementsThe Peloidal Question
Ian G. Macintyre
Special Publications of SEPM
... spherical; the best-developed peloidal textures occur in restricted microcavities; peloidal textures exhibit well-developed zonation in many cement...
1985
Nanoparticle-Encapsulated Acids for Stimulation of Calcite-Rich Shales
Robin Singh, Songyang Tong, Krishna Panthi, Kishore Mohanty
Unconventional Resources Technology Conference (URTEC)
... observations can be made from the micrograph. First, the MEA consists of the irregularly-shaped, non-spherical aggregates as opposed to spherical...
2018
Pressure Transient Analysis in Tight Oil Reservoir, Leak-Off Test Vs PBU Test
Kamal Hamzah, Noke Fajar Prakoso, Bonni Ariwibowo, Aliefiyan N.M
Indonesian Petroleum Association
..., such as transmissibility and reservoir pressure. During this period, the reservoir may initially exhibit formation linear flow followed by formation spherical flow...
2019
Carbonate Cements in Shallowly Buried Pleistocene and Holocene Sandstone and Limestone, South Texas Gulf Coast
Earle F. McBride , Hiromi Honda
GCAGS Transactions
... spherical (Fig. 6). Spheroidal shapes are typical of Holocene protodolomites (e.g., Gunatilaka, 1989). Another common form is stubby crystals 5 to 8 µm...
1994
Detail Illustration of Structural Discontinuities: Fault Intensity Attribute to Enhance the Fault Likelihood, Hessian Derivative and Fault Extraction
Aji Darma Maulana, Argya Hastubrata Basundara, Muhammad Hafiz Baharuddin, Syukron Ady Purnawiranto, Muhammad Alfateh Saifullizan
Indonesian Petroleum Association
... to a Continuous Fault Probability (Fault Likelihood) by using a spherical scanning disc. The spherical disc scans seismic data in all 360 degrees azimuth...
2023
Measurements Of Compaction in Oolitic Grainstone
Alan H. Coogan
Journal of Sedimentary Research (SEPM)
..., Louisiana: Am. Assoc. Petroleum Geologists, Bull., v. 52, p. 92-128. BROWN, R. L., AND HAWKSLEY, P. G., 1945, Packing of regular (spherical and irregular...
1970
Experimental Ooids and Grapestones: Carbonate Aggregates and Their Origin
John C. Deelman
Journal of Sedimentary Research (SEPM)
...: J. Geology, v. 68, p. 481-497. OPPENHEIMER, C. H., 1961, Note on the formation of spherical aragonitic bodies in the presence of bacteria from...
1978
Soft-sediment Deformation Fabric in the Precambrian Bhander Oolite, Central India
Soumen Sarkar , S. K. Chanda, Ajit Bhattacharyya
Journal of Sedimentary Research (SEPM)
... by the presence of ooids, which because of their initial spherical shape cannot have possessed a primary anisotropic fabric, thus providing a useful strain...
1982
The equivalent pore aspect ratio as a tool for pore type prediction in carbonate reservoirs
François Fournier, Matthieu Pellerin, Quentin Villeneuve, Thomas Teillet, Fei Hong, Emmanuelle Poli, Jean Borgomano, Philippe Léonide, and Alex Hairabian
AAPG Bulletin
... provides a tool to detect pore types by combining compressional and shear wave velocities, porosity, bulk density, and mineralogical composition...
2018
ENVIRONMENTAL SIGNIFICANCE OF A MEGASPORE FLORA FROM THE MISSION CANYON FORMATION (MISSISSIPPIAN), BOTTINEAU COUNTY, NORTH DAKOTA
MARK R. LUTHER, EDWARD N. STEADMAN, LEN V. HILLS
Williston Basin Symposium
.... Type three (Figs. 10a through l0d) is spherical, and has prominent proximal architecture in. the form...
1987
Chapter 3: Preparation of Seismic Data for Stratigraphic Work
Tom Wittick
North Texas Geological Society
... amplitude. The amplitude decays with time due to the spherical spreading of the wavefront. Figure 3-1. Amplitude of a Seismic Trace Notice...
1992
The Geophysicist Communicating with Seismic Processing
R. E. Sheriff
Southeast Asia Petroleum Exploration Society (SEAPEX)
... be undone by another EXPGAIN and the spherical divergence will be applied. (We cannot apply spherical divergence at this stage unless we know the velocity...
1980
Numerical Investigation of Dynamic and Static Properties of Reservoir Rocks
Mohsen Abdolghafurian, Bahman Joodi, Stefan Iglauer, Mohammad Sarmadivaleh
Australian Petroleum Production & Exploration Association (APPEA) Journal
.... Dynamic elastic parameters themselves can be measured using seismic, sonic log, experimental wave velocity and dynamic loading tests. These values...
2018
Preparation of Seismic Data For Stratigraphic Work
Abilene Geological Society
... decays with time due to the spherical spreading of the wavefront. Figure 1. Amplitude of a Seismic Trace Notice that there are two components...
1993
Comparative Sedimentology and Diagenesis of Upper Jurassic Quid Grainstone Sequences, East Texas Basin
Gill M. Harwood, Clyde H. Moore
Special Publications of SEPM
... and Favreina pellets are present in grainstones lower in the 183 Grain Type Description Ooids spherical to subspherical grains, average 300-500 4m...
1984