[667] - Impact of arid surface megacracks on hydrocarbon reservoir properties

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Antrett, P., Vackiner, A. A., Kukla, P., Klitzsch, N., Stollhofen, H., 2012. Impact of arid surface megacracks on hydrocarbon reservoir properties. AAPG Bulletin, 96 (7), 1279 - 1299. DOI: 10.1306/11211111069.
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Title(s):Main Title: Impact of arid surface megacracks on hydrocarbon reservoir properties
Description(s):Abstract: The megacrack pattern of the ephemeral north Panamint dry lake, California, United States, is characterized by variably sized polygons with diameters ranging from hundreds of meters to meters. The evolution and subsurface extent of this polygonal pattern and a probable tectonic link are examined by ground resistivity measurements and surface mapping. Crack development is initiated by the shrinking of clays caused by changes in water content near the surface. For crack evolution, the following processes are proposed: Cavities develop at approximately 1-m (∼3-ft) depth during a subsurface phase, followed by the collapse of the overburden into the existing cavities to form the surface cracks. Cracks are filled by wind-blown sand and dried-out lake sediments from collapsing crack walls. Following burial, differences in competence between crack-fill and surrounding playa-lake sediments provide zones of structural weakness that might channelize stress release and faulting. Ground resistivity measurements confirmed the extent of the cracks to a depth of more than 3 m (>9 ft). The megacrack pattern is compared to a Rotliegende (Upper Permian) tight gas field, located in the southern Permian Basin of northwestern Germany, situated in a comparable geologic setting. There, a multidirectional polygonal pattern is recorded on horizon slices of three-dimensional seismic data and compares well to our observations from the Panamint Valley. The Rotliegende pattern is associated with low-offset faults, which are proposed to be responsible for subtle reservoir compartmentalization.
Identifier(s):DOI: 10.1306/11211111069
Responsible Party
Creator(s):Author: Philipp Antrett
Author: Anna Alexandra Vackiner
Author: Peter Kukla
Author: Norbert Klitzsch
Author: Harald Stollhofen
Publisher:The American Association of Petroleum Geologists
TR32 Topic:Other
Subject(s):CRC/TR32 Keywords: Surface
File Details
File Name:2012_Antrett_AAPG.pdf
Data Type:Text
Size(s):21 Pages
File Size:2065 kB (2.017 MB)
Date(s):Date Accepted: 2012-11-21
Mime Type:application/pdf
Data Format:PDF
Download Permission:OnlyTR32
General Access and Use Conditions:For internal use only
Access Limitations:For internal use only
Licence:TR32DB Data policy agreement
North:-no map data
Measurement Region:Other
Measurement Location:--Other--
Specific Informations - Publication
Article Type:Journal
Source:AAPG Bulletin
Number Of Pages:21
Page Range:1279 - 1299
Metadata Details
Metadata Creator:Oliver Mohnke
Metadata Created:2013-12-02
Metadata Last Updated:2013-12-02
Funding Phase:2
Metadata Language:English
Metadata Version:V40
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