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Characterization of heterogeneity in the Heletz sandstone from core to pore scale and quantification of its impact on multi-phase flow

Journal Article · · International Journal of Greenhouse Gas Control
 [1];  [2];  [3];  [4];  [5];  [5];  [1]
  1. Stanford Univ., Stanford, CA (United States)
  2. Univ. of Science & Technology of China, Anhui (China)
  3. Imperial College, London (United Kingdom)
  4. Argonne National Lab. (ANL), Argonne, IL (United States)
  5. SLAC National Accelerator Lab., Menlo Park, CA (United States)

In this paper we present the results of an extensive multiscale characterization of the flow properties and structural and capillary heterogeneities of the Heletz sandstone. We performed petrographic, porosity and capillary pressure measurements on several subsamples. We quantified mm-scale heterogeneity in saturation distributions in a rock core during multi-phase flow using conventional X-ray CT scanning. Core-flooding experiments were conducted under reservoirs conditions (9 MPa, 50 °C) to obtain primary drainage and secondary imbibition relative permeabilities and residual trapping was analyzed and quantified. We provide parameters for relative permeability, capillary pressure and trapping models for further modeling studies. A synchrotron-based microtomography study complements our cm- to mm-scale investigation by providing links between the micromorphology and mm-scale saturation heterogeneities.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Stanford University
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1371553
Alternate ID(s):
OSTI ID: 1425693
Journal Information:
International Journal of Greenhouse Gas Control, Journal Name: International Journal of Greenhouse Gas Control Journal Issue: P1 Vol. 48; ISSN 1750-5836
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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