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Title: Measurements of CO 2 ‐brine relative permeability in Berea sandstone using pressure taps and a long core

Abstract

Abstract We measured CO 2 ‐brine relative permeability by performing five steady‐state primary drainage experiments in a 116 mD Berea sandstone core at 20°C and 10.34 MPa. We used a long (60.8 cm) core and four pressure taps to study and minimize end effects that can plague CO 2 ‐brine relative permeability measurements, and we obtained in situ saturation profiles using a medical X‐ray Computed Tomography (CT) scanner. We found that entrance and exit effects propagated ∼5 cm into the core, but the center sections of the core had uniform saturation. From the saturations and pressure drops, we obtained both CO 2 and brine relative permeability in the center sections. We also obtained CO 2 relative permeability at the entrance section where the brine saturation was lower and not uniform. The 15‐cm long exit section of the core had non‐uniform saturation and a measured pressure drop that was on the order of the capillary pressure and hence was unreliable for calculating relative permeability. We found that the CO 2 and brine relative permeabilities determined in five experiments were consistent with each other and followed two simple Corey‐type models that are similar to those seen in oil‐brine relative permeability measurements. Wemore » discuss why end effects are much greater in the CO 2 ‐brine system than in oil‐brine systems, and how this is a possible explanation of the low CO 2 relative permeabilities recently reported for the CO 2 ‐brine systems. © 2016 Society of Chemical Industry and John Wiley & Sons, Ltd.« less

Authors:
 [1];  [1];  [1]
  1. University of Texas at Austin TX USA
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1401496
Grant/Contract Number:  
DE‐SC0001114
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Greenhouse Gases: Science and Technology
Additional Journal Information:
Journal Name: Greenhouse Gases: Science and Technology Journal Volume: 7 Journal Issue: 2; Journal ID: ISSN 2152-3878
Publisher:
Wiley Blackwell (John Wiley & Sons)
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Chen, Xiongyu, Kianinejad, Amir, and A. DiCarlo, David. Measurements of CO 2 ‐brine relative permeability in Berea sandstone using pressure taps and a long core. United Kingdom: N. p., 2016. Web. doi:10.1002/ghg.1650.
Chen, Xiongyu, Kianinejad, Amir, & A. DiCarlo, David. Measurements of CO 2 ‐brine relative permeability in Berea sandstone using pressure taps and a long core. United Kingdom. https://doi.org/10.1002/ghg.1650
Chen, Xiongyu, Kianinejad, Amir, and A. DiCarlo, David. 2016. "Measurements of CO 2 ‐brine relative permeability in Berea sandstone using pressure taps and a long core". United Kingdom. https://doi.org/10.1002/ghg.1650.
@article{osti_1401496,
title = {Measurements of CO 2 ‐brine relative permeability in Berea sandstone using pressure taps and a long core},
author = {Chen, Xiongyu and Kianinejad, Amir and A. DiCarlo, David},
abstractNote = {Abstract We measured CO 2 ‐brine relative permeability by performing five steady‐state primary drainage experiments in a 116 mD Berea sandstone core at 20°C and 10.34 MPa. We used a long (60.8 cm) core and four pressure taps to study and minimize end effects that can plague CO 2 ‐brine relative permeability measurements, and we obtained in situ saturation profiles using a medical X‐ray Computed Tomography (CT) scanner. We found that entrance and exit effects propagated ∼5 cm into the core, but the center sections of the core had uniform saturation. From the saturations and pressure drops, we obtained both CO 2 and brine relative permeability in the center sections. We also obtained CO 2 relative permeability at the entrance section where the brine saturation was lower and not uniform. The 15‐cm long exit section of the core had non‐uniform saturation and a measured pressure drop that was on the order of the capillary pressure and hence was unreliable for calculating relative permeability. We found that the CO 2 and brine relative permeabilities determined in five experiments were consistent with each other and followed two simple Corey‐type models that are similar to those seen in oil‐brine relative permeability measurements. We discuss why end effects are much greater in the CO 2 ‐brine system than in oil‐brine systems, and how this is a possible explanation of the low CO 2 relative permeabilities recently reported for the CO 2 ‐brine systems. © 2016 Society of Chemical Industry and John Wiley & Sons, Ltd.},
doi = {10.1002/ghg.1650},
url = {https://www.osti.gov/biblio/1401496}, journal = {Greenhouse Gases: Science and Technology},
issn = {2152-3878},
number = 2,
volume = 7,
place = {United Kingdom},
year = {Mon Dec 05 00:00:00 EST 2016},
month = {Mon Dec 05 00:00:00 EST 2016}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at https://doi.org/10.1002/ghg.1650

Citation Metrics:
Cited by: 9 works
Citation information provided by
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