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| Titel |
Assessing accuracy of gas-driven permeability measurements: a comparative study of diverse Hassler-cell and probe permeameter devices |
| VerfasserIn |
C. M. Filomena, J. Hornung, H. Stollhofen |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1869-9510
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| Digitales Dokument |
URL |
| Erschienen |
In: Solid Earth ; 5, no. 1 ; Nr. 5, no. 1 (2014-01-02), S.1-11 |
| Datensatznummer |
250115250
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| Publikation (Nr.) |
 copernicus.org/se-5-1-2014.pdf |
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| Zusammenfassung |
Permeability is one of the most important petrophysical parameters to
describe the reservoir properties of sedimentary rocks, pertaining to
problems in hydrology, geothermics, and hydrocarbon reservoir analysis.
Outcrop analogue studies, well core measurements, and individual sample analysis
take advantage of a variety of commercially available devices for
permeability measurements. Very often, permeability data derived from
different devices need to be merged within one study (e.g. outcrop
minipermeametry and lab-based core plug measurements). To enhance accuracy of
different gas-driven permeability measurements, device-specific aberrations
need to be taken into account. The application of simple one-to-one
correlations may draw the wrong picture of permeability trends. For this
purpose, transform equations need to be established.
This study presents a detailed comparison of permeability data derived from a
selection of commonly used Hassler cells and probe permeameters. As a result
of individual cross-plots, typical aberrations and transform equations are
elaborated, which enable corrections for the specific permeameters.
Permeability measurements of the commercially available ErgoTech gas
permeameter and the TinyPerm II probe permeameter are well-comparable over
the entire range of permeability, with R2 = 0.955. Aberrations are mostly
identified in the permeability range < 10 mD, regarding the TinyPerm II
and the minipermeameter/Hassler-cell combination at Darmstadt University,
which need to be corrected and standardized. Applying standardizations which
consider these aberration intervals strongly improves the comparability of
permeability data sets and facilitates the combination of measurement
principles. Therefore, the utilization of such correlation tests is highly
recommended for all kinds of reservoir studies using integrated permeability
databases. |
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