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Title: A forward analysis on the applicability of tracer breakthrough profiles in revealing the pore structure of tight gas sandstone and carbonate rocks

Journal Article · · Water Resources Research
DOI:https://doi.org/10.1002/2015WR016948· OSTI ID:1370718
 [1];  [1];  [1];  [1]
  1. Univ. of Texas, Austin, TX (United States). Dept. of Petroleum and Geosystems Engineering
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Here, we explore tracer breakthrough profiles (TBP) as a macroscopic property to infer the pore-space topology of tight gas sandstone and carbonate rocks at the core scale. The following features were modeled via three-dimensional multiscale networks: microporosity within dissolved grains and pore-filling clay, cementation in the absence and presence of microporosity (each classified into uniform, pore-preferred, and throat-preferred modes), layering, vug, and microcrack inclusion. A priori knowledge of the extent and location of each process was assumed to be known. With the exception of an equal importance of macropores and pore-filling micropores, TBPs show little sensitivity to the fraction of micropores present. In general, significant sensitivity of the TBPs was observed for uniform and throat-preferred cementation. Layering parallel to the fluid flow direction had a considerable impact on TBPs whereas layering perpendicular to flow did not. Microcrack orientations seemed of minor importance in affecting TBPs.

Research Organization:
Energy Frontier Research Centers (EFRC), Washington D.C. (United States). Center for Frontiers of Subsurface Energy Security (CFSES)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001114
OSTI ID:
1370718
Journal Information:
Water Resources Research, Vol. 51, Issue 6; Related Information: CFSES partners with University of Texas at Austin (lead); Sandia National Laboratory; ISSN 0043-1397
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 21 works
Citation information provided by
Web of Science

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58 GEOSCIENCES
nuclear (including radiation effects)
carbon sequestration
unconventional resources
carbonates
multiscale pore network models
tracer breakthrough profiles