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The AAPG/Datapages Combined Publications Database
Showing 519 Results. Searched 200,599 documents.
Characterization and Measurement of Multi-scale Gas Transport in Shale Core Samples
Khalid R. Alnoaimi, Christophe Duchateau, Anthony Kovscek
Unconventional Resources Technology Conference (URTEC)
... flow, traditionally, describes flow in macropores and partially mesopores where the gas velocity has a parabolic profile across the channel...
2014
A New Analytical Model for Liquid Loading in Shale Gas Reservoirs
Juntai Shi, Xiangfang Li, Yunchao Pu, Wei Yu
Unconventional Resources Technology Conference (URTEC)
... velocity distribution in the wellbore is parabolic, as shown in Fig. 1A, which means that the gas velocity in the center of the wellbore is the highest...
2014
Hydromechanical Principles of Sediment Structure Formation
L.I. Briggs, G. V. Middleton
Special Publications of SEPM
... will be laminar and the veloc profile will be parabolic The effect of the therefore 10 L I BRIGGS AND G V MIDDLETON roughness elements in the boundary...
1960
Paleoecological implications of large-sized wild boar tracks recorded during the Last Interglacial (MIS 5) at Huelva (SW Spain)
Carlos Neto De Carvalho, Fernando Muñiz, Zain Belaústegui, João Belo, Paula Gómez, Antonio Toscano, Mário Cachão, Pedro P. Cunha, Francisco Ruiz, Luis Miguel Cáceres, Joaquín Rodriguez-Vidal, Geraldine Finlayson, Stewart Finlayson, Francisco Giles Guzman, Clive Finlayson
PALAIOS
... to an apex of angular or sharply parabolic shape. Apices of hoofprints directed forward; convergent, parallel, or divergent, according to pace. Maximum...
2020
Rapid diagenesis and microbial biosignature degradation in spring carbonates from Crystal Geyser, Utah, U.S.A.
Jon Lima-Zaloumis, Jack D. Farmer, Elizabeth Trembath-Reichert
Journal of Sedimentary Research (SEPM)
... are upwardly growing columns that display fine parabolic laminae (1 to ∼ 10 μm thick, Fig. 4). The stromatolites are distributed as continuous or closely spaced...
2024
Stratigraphy and Depositional Environments of the Middle Member of the Minnelusa Formation, Central Powder River Basin, Wyoming
Robert J. Desmond, James R. Steidtmann, Donald F. Cardinal
Wyoming Geological Association
... of deformation varies from mild convolution to spectactular parabolic overturning of the cross-beds (Figure 20). The deformed corss-beds commonly grade...
1984
Theoretical Investigation of Water Blocking in Unconventional Reservoirs Due to Spontaneous Imbibition and Water Adsorption
Lichi Deng, Michael J. King
Unconventional Resources Technology Conference (URTEC)
... to stay constant at 1. From Eq. 13, for the water saturation range 𝑆 𝑤𝑖𝑟𝑟 ≤ 𝑆 𝑤 ≤ 𝑆 𝑤0 , the differential equation is degenerate parabolic...
2018
Scaling for Wettability Alteration Induced by Addition of Surfactants in Completion Fluids: Surfactant Selection for Optimum Performance
Fan Zhang, I Wayan Rakananda Saputra, Imad Adel, David S. Schechter
Unconventional Resources Technology Conference (URTEC)
... analyzed systems. For the IFT-RF, the parabolic trend was seen where an optimal point of IFT that would produce the most oil was observed. However...
2018
An Experimental Investigation of Proppant Transport in High Loading Friction-Reduced Systems Utilizing a Horizontal Wellbore Apparatus
Faraj A. Ahmad, Jennifer L. Miskimins
Unconventional Resources Technology Conference (URTEC)
... in a horizontal pipe has a parabolic velocity distribution as shown in Fig. 2 (a), where the layers of the fluid flow slide along each other, and the vertical...
2019
Loss of Hawaiian Littoral Sand
Ralph Moberly, Jr.
Journal of Sedimentary Research (SEPM)
... from air photos as blowout-scours with leeward parabolic dunes, and suggest that fields of blown sand were even more extensive than the main strip...
1968
Chapter 24 - Emerging Techniques
Dana S. Ulmer-Scholle, Peter A. Scholle, Juergen Schieber, Robert J. Raine
AAPG Special Volumes
... by a parabolic mirror and, via a light guide, conveyed to a photomultiplier tube. Early SEM-CL detectors were able to produce only gray-scale images...
2014
Mixing at Turbidity Current Heads, and Its Geological Implications
J. R. L. Allen
Journal of Sedimentary Research (SEPM)
... transversely apart. Dzulynski (1963, Pl. XLII) illustrates a sole on which rows of broad, parabolic flute marks have a transverse spacing of 2-4 cm. He...
1971
Morphology, Processes, and Recent Sedimentary History of a Glacial-Outwash Plain Shoreline, Southern Iceland
Albert C. Hine, Jon C. Boothroyd
Journal of Sedimentary Research (SEPM)
... process. These areas are termed eolian plains. However, no large eolian features such as barchan, parabolic, star, transverse, or longitudinal dunes have...
1978
Sedimentary Facies of an Arid Zone Delta: Gascoyne Delta, Western Australia
David P. Johnson
Journal of Sedimentary Research (SEPM)
... barrier approximately 150 m wide. Wider barriers up to 500 m across occur, often with parabolic blowout dunes. Beach ridges are 3 to 4 m high and may...
1982
Antidunes on Modern and Ancient Washover Fans
John H. Barwis, Miles O. Hayes
Journal of Sedimentary Research (SEPM)
... described by Morton (1978). Obstructions to flow as small as a leaf or shell fragment create parabolic shadow zones of mineral segregation (Fig. 5b...
1985
Sole Marks and Combined-flow Storm Event Beds in the Brixton Formation of the Siliciclastic Archean Witwatersrand Supergroup, South Africa
Nicolas J. Beukes
Journal of Sedimentary Research (SEPM)
... longitudinal scours. Flute casts are rare; conjugate simple parabolic forms (Allen 1982) with smooth bottom surfaces were noted along one bedding plane...
1996
The Effect of Sea-Level and Climate Change on the Development of a Mixed Siliciclastic–Carbonate, Deltaic Coastline: Suwannee River, Florida, U.S.A.
Eric E. Wright, Albert C. Hine, Steven L. Goodbred Jr., Stanley D. Locker
Journal of Sedimentary Research (SEPM)
..., and orientation to other parabolic dunes identified for the southeastern United States (Carver and Brook 1989; Ivester et al. 2001). Because the sands...
2005
Conceptual and Numerical Modeling of the BIG'95 Debris Flow, Western Mediterranean Sea
Galderic Lastras, Fabio Vittorio De Blasio, Miquel Canals, Anders Elverhoi
Journal of Sedimentary Research (SEPM)
... the coordinate perpendicular to the seabed y, the velocity profile for y < Ds, where DS is the thickness of the shear layer, is parabolic (Huang and Garcia...
2005
Stratigraphic Evolution of Blake Outer Ridge
R. G. Markl , G. M. Bryan
AAPG Bulletin
... the sea floor, we have v(t) = v0 + kt. (This implies a parabolic dependence of velocity on depth of overburden: v2(z) = v02 + 2kz, a behavior which...
1983
Analysis of Sonic Well Logs Applied to Erosion Estimates in the Bighorn Basin, Wyoming
Henry P. Heasler , Natalya A. Kharitonova
AAPG Bulletin
..., x is depth, and c is a constant. Baldwin and Butler (1985) proposed a power law of the form φ = 1 - (x/a)b where a and b are constants. A parabolic...
1996
Impacts of volumetric strain on CO2 sequestration in coals and enhanced CH4 recovery
R. Marc Bustin, Xiaojun Cui, Laxmi Chikatamarla
AAPG Bulletin
... between the cleat network and coal matrix was simplified by assuming a parabolic gas concentration profile and an equivalent cylindrical coal matrix (Yang...
2008
Damage and plastic deformation of reservoir rocks: Part 1. Damage fracturing
Seth Busetti, Kyran Mish, Ze'ev Reches
AAPG Bulletin
...) or plastic yield strength (Dugdale, 1960). The existence of a cohesive zone changes the crack profile from parabolic to a cuspate form, where...
2012
Stratigraphic evolution of intraslope minibasins: Insights from surface-based model
Zoltán Sylvester, Alessandro Cantelli, and Carlos Pirmez
AAPG Bulletin
...-view shape for the basin and either a Gaussian or a parabolic subsidence pattern, with zero subsidence at the basin edge and a maximum value...
2015
Effective flow properties of heterolithic, cross-bedded tidal sandstones: Part 2. Flow simulation
Benoît Y. G. Massart, Matthew D. Jackson, Gary J. Hampson, and Howard D. Johnson
AAPG Bulletin
..., and (5) the foreset curvature, defined by the characteristic parameter A of a parabolic curve with equation z(x) = Ax2 (see figure 5...
2016
An Abandoned-Channel Fill With Exquisitely Preserved Plants In Redbeds of the Clear Fork Formation, Texas, USA: An Early Permian Water-Dependent Habitat On the Arid Plains Of Pangea
Sharane S.T. Simon, Martin R. Gibling, William A. DiMichele, Dan S. Chaney, Cindy V. Looy, Neil J. Tabor
Journal of Sedimentary Research (SEPM)
... A. The rose diagram for Channel Body 1 is also shown. B) Cross section AA′ of Channel Body 1. Using a parabolic model, a thickness of 5 m produces...
2016