Photometer Method for Studying Quartz Grain Orientation

Joseph D. Martinez

AAPG Bulletin

... grains on photometer measurements of a vertical thin section will be dependent on the combined effects described. Any anisotropy measured...

Compressibility of Sandstones at Low to Moderate Pressures

I. Fatt

AAPG Bulletin

... and Brothers, New York, Zisman, W. A., 1933, "Compressibility and Anisotropy of Rocks at and near the Earth's Surface," Proc. Nat. Acad. Sci. Vol. 19...

Iron-Titanium Oxide Minerals and Magnetic Susceptibility Anomalies in the Mariano Lake-Lake Valley Cores--Constraints on Conditions of Uranium Mineralization in the Morrison Formation, San Juan Basin, New Mexico

Richard L. Reynolds, Neil S. Fishman, James H. Scott, Mark R. Hudson

AAPG Special Volumes

..., San Juan basin, New Mexico, this volume. Christie, K. W., and D. T. A. Symons, 1969, Apparatus for measuring magnetic susceptibility and its anisotropy...

Quasi-Planar-Laminated Sandstone Beds of the Lower Cretaceous Bootlegger Member, North-Central Montana: Evidence of Combined-Flow Sedimentation

R. W. C. Arnott

Journal of Sedimentary Research (SEPM)

... the anisotropy of magnetic susceptibility (AMS). Because of the paucity of magnetic grains in Bootlegger sandstones, AMS data proved to be unreliable. In thin...

Upper Cretaceous Depositional Sequences in the Alabama Gulf Coastal Plain: Their Characteristic, Origin, and Constituent Clastic Aquifers

David T. King, Jr.

Journal of Sedimentary Research (SEPM)

...). End_Page 260------------------------ that contribute to aquifer heterogeneity and anisotropy. The strong textural contrasts that characterize...

Chapter 135: Canyon San Fernando, Baja California, Mexico: A Deepmarine Channel-levee Complex that Evolved from Submarine Canyon Confinement to Unconfined Deposition

Mason Dykstra, Ben Kneller

AAPG Special Volumes

...: Texture of the silt/sand load, paleoflow from anisotropy of magnetic susceptibility, and implications for flow processes, in R. D. Flood, D. J. W. Piper...

Comprehensive Characterization of a Potential Site for CO2 Geological Storage in Central Alberta, Canada

Karsten Michael, Stefan Bachu, Beate E. Buschkuehle, Kristine Haug, Stephen Talman

AAPG Special Volumes

...). The vertical permeability, kv, ranges from 2.4 to 85 md, and generally the vertical anisotropy kv/kmax ranges from 1:5 to 1:30. Although this limited...

Deformation Band Control on Hydrocarbon Migration

John Parnell, Gordon R. Watt, David Middleton, Jason Kelly, Martin Baron

Journal of Sedimentary Research (SEPM)

... that the initial charge would have been unaffected by any deformation-related structural anisotropy. A second generation of hydrocarbon inclusions has been...

Multiple-scale Geologic Models for Heavy Oil Reservoir Characterization

Clayton V. Deutsch

AAPG Special Volumes

... between vertical and horizontal permeabilities will increase with scale because of the anisotropy of the small-scale geologic features.Figure 12...

Folded Faults and Sequence of Thrusting in Alberta Foothills

P. B. Jones

AAPG Bulletin

... (Hafner, 1951, p. 385), modified by the vertical anisotropy of the sedimentary sequence. The Sylvester Creek and Brewster Creek Table 1. Formations...

Pore Geometry of Carbonate Rocks as Revealed by Pore Casts and Capillary Pressure

N. C. Wardlaw

AAPG Bulletin

.... Canadian Petroleum Tech., v. 14, p. 33-37. Thill, R. E., T. R. Bur, and R. C. Steckley, 1973, Velocity anisotropy in dry and saturated rock spheres...

Stratal Extension in Thrust Footwalls, Makran Accretionary Prism: Implications for Thrust Tectonics

John Paul Platt , Jeremy K. Leggett

AAPG Bulletin

... of anisotropy (Donath, 1961; Jaeger and Cook, 1976). Predicted fracture orientations in this situation are shown approximately in Figure 12. These correspond...

Seismic Interpretation of Carbonate Depositional Environments

J. M. Fontaine , R. Cussey , J. Lacaze , R. Lanaud , L. Yapaudjian

AAPG Bulletin

... carbonate rocks. Thus, the karst can form a particular type of reservoir, characterized by a high anisotropy and high permeability. On two-dimensional...

Structural Setting and Validation of Direct Hydrocarbon Indicators for Amauligak Oil Field, Canadian Beaufort Sea (1)

M. E. ENACHESCU

AAPG Bulletin

... are coincident, whereas on the eastern side (region 2), they are slightly divergent. This difference points toward small anisotropy of seismic velocities...

AAPG International Conference and Exhibition September 12-15, 1999, Birmingham, England, - Abstracts, #90923 (1999).

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Deep Structure of the Texas Gulf Passive Margin and its Ouachita-Precambrian Basement: Results of the COCORP San Marcos Arch Survey (1)

R. CULOTTA , T. LATHAM , M. SYDOW , J. OLIVER , L. BROWN , and S. KAUFMAN

AAPG Bulletin

... be influenced by preexisting mechanical anisotropies in the basement, such as the Ouachita antiform. Such an anisotropy could function as a second-order hinge...

Petrophysical Classification of Siliciclastics for Lithology and Porosity Prediction from Seismic Velocities (1)

LEV VERNIK and AMOS NUR

AAPG Bulletin

.... Coyner, and M. N. Toksoz, 1986, Experimental determination of elastic anisotropy of Berea Sandstone, Chicopee shale, and Chelmsford Granite: Geophysics, v...

Diagenetic Heterogeneity and Reservoir Quality: Fluvial, Deltaic, and Turbiditic Sandstone Reservoirs, Potiguar and Reconcavo Rift Basins, Brazil

Marco A. S. Moraes , Ronald C. Surdam

AAPG Bulletin

.... Diagenesis thus tends to significantly enhance permeability anisotropy inherited from the original depositional configuration. The field-wide effect...

Geostatistical Models of Secondary Oil Migration Within Heterogeneous Carrier Beds: A Theoretical Example

Lee Rhea , Mark Person , Ghislain de Marsily , Emmanuel Ledoux , Alain Galli

AAPG Bulletin

... = porosity, t = time, x,y = spatial coordinates in the principal direction of anisotropy...

Geothermal Regime and Thermal History of the Llanos Basin, Colombia

Stefan Bachu , J. C. Ramon , M. E. Villegas , J. R. Underschultz

AAPG Bulletin

... permeability, measured in core, is also high, on the order of 10-13 to 10-12m2 on average. The vertical anisotropy of sandstone permeability is 0.7. The flow...

A Physical Model of Cementation and Its Effects on Single-Phase Permeability

Manmath N. Panda, Larry W. Lake

AAPG Bulletin

...., Surface phenomena in enhanced oil recovery: New York, Plenum, 874 p. Lake, L. W., 1988, The origins of anisotropy: Journal of Petroleum Technology...

Factors controlling prolific gas production from low-permeability sandstone reservoirs: Implications for resource assessment, prospect development, and risk analysis

Keith W. Shanley, Robert M. Cluff, John W. Robinson

AAPG Bulletin

... resource levels. Al-Hadrami, H. K., and L. W. Teufel, 2000, Influence of permeability anisotropy and reservoir heterogeneity on optimization of infill...

Fault and fracture systems in a fold and thrust belt: An example from Bolivia

Juan-Mauricio Florez-Nio, Atilla Aydin, Gary Mavko, Marco Antonellini, Asterio Ayaviri

AAPG Bulletin

... of the anisotropy and heterogeneity introduced by faults and fractures in the subsurface. In this regard, the critical questions are, How are faults...

Nature of a regional dogleg pattern in maturity profiles from Thrace basin, northwestern Turkey: A newly discovered unconformity or a thermal anomaly?

Ozkan Huvaz, Hasan Sarikaya, mr M. Nohut

AAPG Bulletin

... is characterized by increasing anisotropy with increasing maturity (Kilby, 1988). In the Thrace basin, the %Ro variation versus depth shows a sudden change...

Jointed deformation bands may not compartmentalize reservoirs

S. E. Tindall

AAPG Bulletin

... influence on the permeability and the permeability anisotropy in sandstone reservoirs.Open joints in porous sandstone can increase the effective...