NMR Facies Definition for Permo-Triassic Kangan/Dalan Carbonate Formation by Use of Core/Log and Pore-Scale Measurements
- Alireza Mardani (Petropars Limited) | Reza Rezaee (Curtin University) | Ashkan Asadi (Pars Oil and Gas Company (POGC))
- Document ID
- Society of Petroleum Engineers
- SPE Reservoir Evaluation & Engineering
- Publication Date
- January 2013
- Document Type
- Journal Paper
- 8 - 18
- 2013. Society of Petroleum Engineers
- 5.8.7 Carbonate Reservoir, 5.6.1 Open hole/cased hole log analysis, 5.5.9 Special Core Analysis, 5.1 Reservoir Characterisation
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- 940 since 2007
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An integrated and quantitative approach is taken here to the Permo-Triassic Kangan/Dalan carbonate formation. We apply pore-network characterization to the problem of the classification of these complex carbonate gas-reservoir rocks. We start with the useful and convenient nuclear-magnetic-resonance (NMR) data on 28 samples to define NMR facies (NMRF). The NMRF grouping is performed with both the relaxivity constant (??2) and the specific-surface-volume (Sgv) data. Seven NMRF have been defined with a combination of core/log NMR data, petrographic image analysis, and mercury-injection examinations for two wells. The advantage of evaluation of the pore spaces rather than grain properties is to discover trends that are not apparent when one uses a conventional sedimentological facies definition. Lithology-independent NMRF exhibit properties that are associated with pore geometry. This should have special importance for the formation evaluation of carbonates.
|File Size||1 MB||Number of Pages||11|
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