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Title: Experimental Study on a Single Cement-Fracture Using CO[subscript 2] Rich Brine

Abstract

The efficiency of Carbon Capture and Storage (CCS) projects is directly related to the long term sealing efficiency of barrier systems and of wellbore cement in wellbores penetrating storage reservoirs. The microfractures inside the wellbore cement provide possible pathways for CO{sub 2} leakage to the surface and/or fresh water aquifers, impairing the long-term containment of CO{sub 2} in the subsurface. The purpose of this experimental study is to understand the dynamic alteration process in the cement caused by the acidic brine. The first experiment, at ambient temperature and pressure, was conducted by flowing CO{sub 2}-rich brine through 1 in. by 2 in. (25.4 mm by 50.8 mm) cement cores for 4 and 8 weeks durations. The second experiment was a 4 weeks long flow-through experiment conducted at ambient conditions using a 1 in. by 12 in.(25.4 mm by 304.8 mm) cement core and CO{sub 2}-rich brine with a core flooding system under 600 psi (4.13 MPa) confining stress. Post-experiment material analysis from both experiments confirmed leaching of Ca{sup 2+} from reacted cement, as reported in literature. However for the first time, porosity of the reacted regions was semi-quantified applying micro-CT images.

Authors:
; ; ;  [1];  [2]
  1. (Alberta Innov.)
  2. (
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
NSFOTHER
OSTI Identifier:
1023652
Resource Type:
Journal Article
Journal Name:
Energy Procedia
Additional Journal Information:
Journal Volume: 4; Journal Issue: 2011
Country of Publication:
United States
Language:
ENGLISH
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 54 ENVIRONMENTAL SCIENCES; AMBIENT TEMPERATURE; AQUIFERS; BRINES; CAPTURE; CARBON DIOXIDE; CARBON SEQUESTRATION; CEMENTS; COMPUTERIZED TOMOGRAPHY; CONTAINMENT; CORE FLOODING SYSTEMS; DYNAMICS; EFFICIENCY; FRESH WATER; IMAGES; LEACHING; LEAKS; POROSITY; STORAGE; SURFACES

Citation Formats

Yalcinkaya, Tevfik, Radonjic, Mileva, Willson, Clinton S., Bachu, Stefan, and LSU). Experimental Study on a Single Cement-Fracture Using CO[subscript 2] Rich Brine. United States: N. p., 2011. Web. doi:10.1016/j.egypro.2011.02.515.
Yalcinkaya, Tevfik, Radonjic, Mileva, Willson, Clinton S., Bachu, Stefan, & LSU). Experimental Study on a Single Cement-Fracture Using CO[subscript 2] Rich Brine. United States. doi:10.1016/j.egypro.2011.02.515.
Yalcinkaya, Tevfik, Radonjic, Mileva, Willson, Clinton S., Bachu, Stefan, and LSU). Wed . "Experimental Study on a Single Cement-Fracture Using CO[subscript 2] Rich Brine". United States. doi:10.1016/j.egypro.2011.02.515.
@article{osti_1023652,
title = {Experimental Study on a Single Cement-Fracture Using CO[subscript 2] Rich Brine},
author = {Yalcinkaya, Tevfik and Radonjic, Mileva and Willson, Clinton S. and Bachu, Stefan and LSU)},
abstractNote = {The efficiency of Carbon Capture and Storage (CCS) projects is directly related to the long term sealing efficiency of barrier systems and of wellbore cement in wellbores penetrating storage reservoirs. The microfractures inside the wellbore cement provide possible pathways for CO{sub 2} leakage to the surface and/or fresh water aquifers, impairing the long-term containment of CO{sub 2} in the subsurface. The purpose of this experimental study is to understand the dynamic alteration process in the cement caused by the acidic brine. The first experiment, at ambient temperature and pressure, was conducted by flowing CO{sub 2}-rich brine through 1 in. by 2 in. (25.4 mm by 50.8 mm) cement cores for 4 and 8 weeks durations. The second experiment was a 4 weeks long flow-through experiment conducted at ambient conditions using a 1 in. by 12 in.(25.4 mm by 304.8 mm) cement core and CO{sub 2}-rich brine with a core flooding system under 600 psi (4.13 MPa) confining stress. Post-experiment material analysis from both experiments confirmed leaching of Ca{sup 2+} from reacted cement, as reported in literature. However for the first time, porosity of the reacted regions was semi-quantified applying micro-CT images.},
doi = {10.1016/j.egypro.2011.02.515},
journal = {Energy Procedia},
number = 2011,
volume = 4,
place = {United States},
year = {2011},
month = {9}
}