NDLI: Modeling core-scale permeability anisotropy in highly bioturbated “tight oil” reservoir rocks

Content Provider	Springer Nature Link
Author	Sola, Nisael A. Soroush, Mohammad Clarkson, Chris R. Krause, Federico F. Jensen, Jerry L.
Copyright Year	2017
Abstract	A high-resolution simulation model of a heterogeneous low-permeability rock sample is used to investigate the effects of physical and biogenic sedimentary structures on scaling and anisotropy of absolute permeability at the core scale. Several simulation sub-samples with random locations and volumes were also selected for evaluation of the effects of scale and lithological composition on the calculated permeability. Vertical and horizontal permeability values (from whole core simulation) are in good agreement with routine core analysis (RCA) measurements from offsetting cores. Despite relatively good reservoir quality associated with geobodies of biogenic and relic bedding structures, results from the full diameter core simulation demonstrate that their limited volumetric abundance and restricted connectivity prevent these features from controlling fluid flow in these rocks. In fact, permeability seems to be dominated by the tighter encasing matrix, which exhibits average permeability values very close to those reported from RCA. Geometric averaging offers a better representation for the upscaling of horizontal permeability datasets; whereas, both geometric and harmonic averaging work similarly well for the vertical measurements. The methodology used in this work is particularly applicable to the detailed characterization of reservoir rocks with a high degree of heterogeneity caused by biological reworking and diagenesis.
Starting Page	567
Ending Page	593
Page Count	27
File Format	PDF
ISSN	14200597
Journal	Computational Geosciences
Volume Number	21
Issue Number	3
e-ISSN	15731499
Language	English
Publisher	Springer International Publishing
Publisher Date	2017-03-20
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Core analysis Permeability Simulation Bioturbated Tight oil Cardium Formation Earth Sciences Geotechnical Engineering & Applied Earth Sciences Hydrogeology Mathematical Modeling and Industrial Mathematics Soil Science & Conservation
Content Type	Text
Resource Type	Article
Subject	Computers in Earth Sciences Computational Theory and Mathematics Computer Science Applications Computational Mathematics

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