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The AAPG/Datapages Combined Publications Database
Showing 17,708 Results. Searched 200,641 documents.
Ultimate Recovery of the L-1 Sand, Benakat Timur Field, South Sumatra
R. S. Trijaya Kartoatmodjo
Indonesian Petroleum Association
... porosity, were excluded in arriving at the volumetric average porosity of 24.5 percent. Laboratory measured permeabilities are available for only the one...
1982
Automatic detection of SEG-Y sampling format errors using machine learning
Sahana Vinayak, Ray Abma, Sergey Fomel
International Meeting for Applied Geoscience and Energy (IMAGE)
... artificial neural network to classify the floating-point numbers. The model has a training accuracy of 96 percent and testing accuracy of 95.5 percent...
2022
A Deposit of Coal in the Mississippian of the Deep Delaware Basin
Mark F. Schweinfurth, Ronald W. Stanton
West Texas Geological Society
...’, as calculated from the Schlumberger Sonic log). Approximately 5 percent by volume of this sample was composed of limy siltstone and argillaceous limestone from...
1978
Sandstone Diagenesis and Porosity Development in Olmos, San Miguel, and Upson Formations (Upper Cretaceous), Northern Rio Escondido Basin, Coahuila, Mexico
Linda C. Merritt
GCAGS Transactions
... measured to be 45 percent (Pryor, 1973). Most of the original porosity in the Rio Escondido Basin sandstone was lost through compaction of rock fragments...
1980
Petrography of the Late Tertiary Volcanic Ash Falls in the Central Great Plains
Ada Swineford, John C. Frye, A. Byron Leonard
Journal of Sedimentary Research (SEPM)
... of the Ash Hollow member of the Ogallala formation where it is estimated that volcanic material constitutes more than three percent of the volume...
1955
Analytical Procedures Applicable to Fine-grained Sedimentary Rocks
Robert L. O'Neil
Journal of Sedimentary Research (SEPM)
...------------------------ random samples were selected from the shales and lignites and determined by both standard and rapid methods. The results agree within ±2 percent...
1959
Origin of Porosity in Carbonate Rocks
R. C. Murray
Journal of Sedimentary Research (SEPM)
.... The fine, light specks are 5-7 µ dolomite euhedra (20 percent of the rock) replacing the original carbonate mud. The large vug in the upper right has been...
1960
Relationships Between Porosity, Median Size, and Sorting Coefficients of Synthetic Sands
John J. W. Rogers, William B. Head
Journal of Sedimentary Research (SEPM)
... spheres should vary from 47.6 percent if the spheres have a cubic packing to 25.9 percent, if the spheres are rhombohedrally packed (Graton and Fraser...
1961
Quantitative Determination of Calcite-dolomite-apatite Mixtures by X-ray Diffraction
S. H. Bromberger, John B. Hayes
Journal of Sedimentary Research (SEPM)
...-eight known mixtures of calcite, dolomite, and apatite were prepared in two sets. The first set of 19 contained the three components with weight percent...
1966
A Comparison of Two Methods of Quantitative Mineralogical Analysis of Sedimentary Rocks: NOTES
M. J. Kaye , A. C. Dunham , D. M. Hirst
Journal of Sedimentary Research (SEPM)
... was subtracted from all measurements and working curves constructed from a plot of peak minus background against concentration in percent. The choice...
1968
Oil-Gas Potential of the Arctic Super-Basin
I. s. Gramberg, O. I. Suprumenko, K. G. Viskunova, N. K. Yevdokimova, B. I. Kim, M. K. Kos’ko, D. V. Lazurkin, V. V. Suslova, N. V. Ustinov
Petroleum Geology: A Digest of Russian Literature
... is a very young ocean of the planet. It differs from the other oceans in several respects. It is small with only 3.6 percent of the total area of the World...
2002
Differentiation of Shale Types by Allochthonous and Autochthonous Nannofossils of Middle Miocene of South Louisiana: GEOLOGIC NOTES
W. W. Cooper
AAPG Bulletin
... to 69 percent autochthonous nannofossils is present in the three wells which are assumed to have been on depositional strike during deposition...
1976
Burial Diagenesis: Out of Sight, Out of Mind!
Peter A. Scholle, Robert B. Halley
Special Publications of SEPM
... breakage, and other mcchanical processes lead to sedinient/rock porosities as low as 30 percent. Continued porosity loss requires mechanical compaction...
1985
Reservoir Characterization of a Permian Giant: Yates Field, West Texas
Scott W. Tinker, Denise H. Mruk
Special Publications of SEPM
... and fracture permeability in the Yates Field. The objectives of the calcite analysis were (1) to determine the relationship between the volume percent...
1995
Apalachicola Bay: Dynamic Sedimentation in a Gulf Coast Estuary
Wayne C. Isphording
GCAGS Transactions
... percent of the total transported material. In view of this, Apalachicola Bay, Florida must be considered a unique depositional basin. This, because...
1986
Oncolites, Paleoecology, and Laramide Tectonics, Central Utah
Malcolm P. Weiss
AAPG Bulletin
... these conclusions about the proportions of the rocks that are algal in origin: only 6 have more than 75 percent by volume of algal material; 19 have less than 10...
1969
Interstitial Water Composition and Geochemistry of Deep Gulf Coast Shales and Sandstones
Gene W. Schmidt
AAPG Bulletin
... salinities of the calculated interstitial water of the shales. For normally compacted rocks, the shale porosity ranges from about 22 percent at 2,000...
1973
HYDRODYNAMIC TRAPPING IN MISSION CANYON RESERVOIRS: ELKHORN RANCH FIELD, NORTH DAKOTA
WILLIAM D. DeMIS
Williston Basin Symposium
... relation above a threshold of about 12 percent porosity, below which no permeability (<1 md) exists. The Sherwood has an empirically...
1987
TEMPERATURE AND PRESSURE CONTROLS ON THE FRACTURED DEVONIAN SHALE GAS PLAY OF THE APPALACHIAN BASIN*
Terence Hamilton-Smith, Kentucky Geological Survey, Lexington, Kentucky
Ohio Geological Society
... in organic matter. The organic carbon content of the Lower Huron Shale ranges from a low of approximately 1 percent in central West Virginia...
1994
CRITERIA FOR IDENTIFYING FOSSIL NUCLEAR REACTORS AND THEIR APPLICATION TO SASKATCHEWAN
K.E. Apt and E.A. Bryant
Saskatchewan Geological Society
... the zones to tens of percent over a quarter meter into the zone. Maximum uranium concentrations around 60% were observed, and corrected for the 238U decay...
1977
Beattie Limestone Facies and Their Bearing on Cyclical Sedimentation Theory
John Imbrie, Leo Laporte, Daniel F. Merriam
Kansas Geological Society
... containing conspicuous subspherical or bean-shaped Osagia-coated grains typically making up 40 percent of the rock and 80 percent of the biota. Type b...
1959
ECONOMIC GEOLOGY OF THE GREAT FALLS-LEWISTOWN COAL FIELD WEST - CENTRAL MONTANA
Arnold Silverman, William L. Harris
Montana Geological Society
... at a rate of six to eight percent a year over the next 20 years, with coal production increasing at a slightly smaller rate. The western...
1966
Lalang Reservoir Simulation Study, Central Sumatra
Dennis Best
Indonesian Petroleum Association
... percent to 30 percent with an average of 27 percent. The capillary pressure data indicated a transition zone of 2–3 psi which is approximately equal...
1986
Golden Spike D3A Pool
J. G. McGillivray
CSPG Special Publications
... and intraparticle porosity comprise the void space. This facies is generally a poor reservoir rock averaging less than 4 percent porosity and less than 1 md...
1977
Quantitative Gasometric Determination of Calcite and Dolomite by Using Chittick Apparatus
Aleksis Dreimanis
Journal of Sedimentary Research (SEPM)
... percent smaller than found by applying the above formula. Other carbonate minerals are commonly present in tills in such small quantities...
1962