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| Titel |
Application of local singularity in prospecting potential oil/gas Targets |
| VerfasserIn |
Shuyun Xie, Qiuming Cheng, Chen Gao, Zhijun Chen, Zhengyu Bao |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 14, no. 3 ; Nr. 14, no. 3 (2007-06-18), S.285-292 |
| Datensatznummer |
250012201
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| Publikation (Nr.) |
 copernicus.org/npg-14-285-2007.pdf |
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| Zusammenfassung |
| Together with generalized self-similarity and the fractal spectrum, local
singularity analysis has been introduced as one part of the new 3S principle
and technique for mineral resource assessment based on multifractal
modeling, which has been demonstrated to be useful for anomaly delineation.
Local singularity is used in this paper to characterize the property of
multifractal distribution patterns of geochemical indexes to delineate
potential areas for oil/gas exploration using the advanced GeoDAS GIS
technology. Geochemical data of four oil/gas indexes, consisting of
acid-extracted methane (SC1), ethane (SC2), propane (SC3),
and secondary carbonate (ΔC), from 9637 soil samples amassed within
a large area of 11.2×104 km2 in the Songpan-Aba
district, Sichuan Province, southwestern China, were analyzed. By
eliminating the interference of geochemical oil/gas data with the method of
media-modification and Kriging, the prospecting area defined by the local
singularity model is better identified and the results show that the
subareas with higher singularity exponents for the four oil/gas indexes are
potential targets for oil/gas exploration. These areas in the shape of rings
or half-rings are spatially associated with the location of the known
producing drilling well in this area. The spatial relationship between the
anomalies delineated by oil/gas geochemical data and distribution patterns
of local singularity exponents is confirmed by using the stable isotope of
δ13C. |
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