Principles of data spacing and uncertainty in geomodeling

Ryan M. Barnett, Steven Lyster, Felipe A.C. Pinto, Kelsey MacCormack, Clayton V. Deutsch

CSPG Bulletin

... the data are; and 3) the anisotropy that is present in the data due to geologic phenomena. Other factors contribute to the uncertainty of simulation...

1987 AAPG Annual Convention, Los Angeles, California, June 7-10, 1987- Abstracts, #91038 (1987).

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Sedimentology, Statistics, and Flow Behavior for a Tide-influenced Deltaic Sandstone, Frontier Formation, Wyoming, United States

Christopher D. White, Brian J. Willis, Shirley P. Dutton, Janok P. Bhattacharya, Keshav Narayanan

AAPG Special Volumes

... arrays of thin impermeable shale lenses or of highly conductive natural fractures on apparent permeability anisotropy: Journal of Petroleum Technology, v...

The Significance of Penetrative Strain in the Restoration of Shortened LayersInsights from Sand Models and the Spanish Pyrenees

Hemin A. Koyi, Maura Sans, Antonio Teixell, James Cotton, Hermann Zeyen

AAPG Special Volumes

... factors of erosion, deposition, material anisotropy resulting from facies changes, and time variations in pore-fluid pressure ratios across the wedge...

Influence of Growth Strata on the Evolution of Fault-related Folds Distinct-element Models

Luther M. Strayer, S. Gregg Erickson, John Suppe

AAPG Special Volumes

... deformation alternating between the two modes. Because there is no preexisting anisotropy in the pregrowth material, flexural-slip deformation occurs...

Petrophysical Properties and Sealing Capacity of Fault Rock, Aztec Sandstone, Nevada

Eric Flodin, Martha Gerdes, Atilla Aydin, William D. Wiggins

AAPG Special Volumes

... of measurement, no significant permeability anisotropy was detected in any of the sample suites based on oriented sample plugs (Figure 7).Porosity...

Seismic Characterization of Large-scale Sandstone Intrusions

Mads Huuse, Joe Cartwright, Andrew Hurst, Noralf Steinsland

AAPG Special Volumes

... geometries associated with sandstone intrusions and anisotropy in the encasing mudstones. The remedies for these problems include building detailed...

Clastic Intrusion at the Base of Deep-water Sands: A Trap-forming Mechanism in the Eastern Mediterranean

Jose Frey-Martnez, Joe Cartwright, Ben Hall, Mads Huuse

AAPG Special Volumes

..., bedding anisotropy and lateral spreading of the intruded mud mass in the Yafo Sand Member may have interacted to form the mounded structures...

Natural Fractures in Coal: Chapter 5

Jay C. Close

AAPG Special Volumes

... face cleats. As a result of these geometric relationships, there is commonly a significant face and butt cleat permeability anisotropy in coal...

Petrology and Structure of Some Lower Carboniferous Reefs in Northwestern Ireland

W. Schwarzacher

AAPG Bulletin

...). Voll (1959) showed that the same criterion can be used for crystals of lower symmetries in metamorphic rocks and that the anisotropy of the crystal...

Influence of Tectonic Terranes Adjacent to the Precambrian Wyoming Province on Phanerozoic Stratigraphy in the Rocky Mountain Region: Part I. Regional Overview

J. J. Tonnsen

AAPG Special Volumes

... stratigraphic observations were tied to observations of regional anisotropy in the crystalline basement. Several geologic atlases were used, including...

Basement-Controlled Deformation in Wyoming Province of Rocky Mountains Foreland

John James Prucha , John A. Graham , Richard P. Nickelsen

AAPG Bulletin

... are an inadequate tool to resolve the problem. Preliminary studies reported by Donath (1961) show that, in the Martinsburg Slate, planar anisotropy (foliation...

Geologic Reservoir Characterization and Evaluation of the Petrocedeno Field, Early Miocene Oficina Formation, Orinoco Heavy Oil Belt, Venezuela

Allard W. Martinius, Jan Hegner, Inge Kaas, Celia Bejarano, Xavier Mathieu, Rune Mjos

AAPG Special Volumes

... to experiments. Pressure buildup analysis indicates a somewhat higher average permeability than measured from core. It shows a clear anisotropy...

Geothermal Energy as a Source of Heat for Oil Sands Processing in Northern Alberta, Canada

Jacek Majorowicz, Martyn Unsworth, Tom Chacko, Allan Gray, Larry Heaman, David K. Potter, Douglas R. Schmitt, Tayfun Babadagli

AAPG Special Volumes

... the distribution of in-situ fractures and seismic anisotropy. Such seismic anisotropy would be an important exploration tool in the context of EGS because...

Physiography and Sedimentary Processes of La Jolla Submarine Fan and Fan-Valley, California

F. P. Shepard , R. F. Dill , Ulrich Von Rad

AAPG Bulletin

... of turbidity currents: Soc. Econ. Paleontologists and Mineralogists Spec. Pub., no. 2, p. 76-107. Rees, A. I., 1965, The use of anisotropy...

Graben Hydrocarbon Occurrences and Structural Style

T. P. Harding

AAPG Bulletin

... of the fault block (Figure 25). The influence of basement anisotropy is critical in block faulting, and in some regions one or more of the fault orientations...

Thermal and Tectonic History of Selected Taranaki Basin (New Zealand) Wells Assessed by Apatite Fission Track Analysis (1)

PETER J. J. KAMP and PAUL F. GREEN

AAPG Bulletin

... anisotropy, length bias and system calibration: Earth and Planetary Science Letters, v. 89, p. 335-352. Green, P. F., I. R. Duddy, A. J. W. Gleadow...

Hydrogeology of Formation Waters, Northeastern Alberta Basin

Stefan Bachu, J. R. Underschultz

AAPG Bulletin

... and well scale, respectively). Values f regional-scale aquifer anisotropy are given in Table 3. SIGNIFICANCE Hydrocarbon Reservoirs The nature...

Thermogenic and Secondary Biogenic Gases, San Juan Basin, Colorado and New Mexico--Implications for Coalbed Gas Producibility

Andrew R. Scott , W. R. Kaiser , Walter B. Ayers, Jr.

AAPG Bulletin

.... End_Page 1202------------------------------ coal beds where they metabolize and preferentially remove n-alkanes. Therefore, permeability anisotropy...

Influence of Lithofacies and Diagenesis on Norwegian North Sea Chalk Reservoirs

J. E. Brasher , K. R. Vagle

AAPG Bulletin

... activity and flattened clays (Figure 12B). This creates a permeability anisotropy where some horizontal permeability has been retained (although commonly...

Depositional and diagenetic controls on the reservoir quality of Lower Cretaceous Pendência sandstones, Potiguar rift basin, Brazil

Sylvia M. C. dos Anjos, Luiz F. De Ros, Rogério Schiffer de Souza, Carlos Manuel de Assis Silva, Cristiano L. Sombra

AAPG Bulletin

... and replaces micas (Figure 12b). Its preferential precipitation along micaceous levels enhances the permeability anisotropy of deltaic...

Characterization of the Mississippian chat in south-central Kansas

W. Lynn Watney, Willard J. Guy, Alan P. Byrnes

AAPG Bulletin

... ± 0.24 (1 s.d.) of maximum values, indicating that horizontal anisotropy is low. Limited comparison of vertical and maximum horizontal permeabilities...

Seal bypass systems

Joe Cartwright, Mads Huuse, Andrew Aplin

AAPG Bulletin

.... Kronenberg, A. F. Gangi, B. Johnson, and B. E. Herbert, 2004, Permeability of illite-bearing shale: 1. Anisotropy and effects of clay content and loading...

Extensional fault segmentation and linkages, Bonaparte Basin, outer North West Shelf, Australia

E. Frankowicz, K. R. McClay

AAPG Bulletin

... of these four units resulted in a strong mechanical anisotropy in the Cretaceous succession, with the fine-grained units, offset by polygonal faults...

Outcrop-based reservoir characterization of a kilometer-scale sand-injectite complex

Anthony Scott, Andrew Hurst, Mario Vigorito

AAPG Bulletin

...-permeability sandstones (15613047 md; green to blue areas). The gridding method used was natural neighbor (anisotropy of 0.1 and angle of 5). (B...