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Title: WISE-CASING: Containment and Monitoring Institute (CaMI), Calgary, Canada FEM-DC Model

Abstract

For the model calculation we applied EM3D using completion diagram of CaMI site and a background resistivity consistent with the borehole logs. It was also important to use the accurate position of the return electrode. We note that for the data fit the code also incorporated well casings for well INJ and the other observation well, either OB1 or OB2, in the calculation. In summary, we demonstrate here, for this particular case, that the DC results may be a reasonable approximation to the low frequency EM data collected at CaMI. If this approximation continues to hold, then the extreme computational efficiency offered by the hierarchical modeling used in the DC simulations will permit us to explore far more model complexity, especially the pervasive and troublesome data artifacts that arise when doing EM surveys in mature, culturally developed sites. In Brief, both the low frequency and DC simulation codes provided very consistent results that match the field data really well, indicating their capability to help monitoring borehole integrity with the low frequency EM method.

Authors:
ORCiD logo ;
Publication Date:
Other Number(s):
1171
DOE Contract Number:  
EE0033208
Product Type:
Dataset
Research Org.:
USDOE Geothermal Data Repository (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Geothermal Technologies Program (EE-2C)
Subject:
15 Geothermal Energy
Keywords:
geothermal; energy; EM; EM3D; CaMI; Borehole logs; DC model; Sandia; simulation; field data; electrostatic rsponse; electric fields; hierarchical modeling; low frequency EM method; validation; WISE-CASING; containment and monitoring institute; CMC; numerical; FEM; field; data; FDEM; simulated; modeling; modelling; Canada; low frequency; frequency domain; geophysics; borehole; corrosion; integrity; wellbore; well; potential field; excitation; 5 hz; electromagnetic; casing; electric field; forward
OSTI Identifier:
1560531
DOI:
https://doi.org/10.15121/1560531

Citation Formats

Wang, Jiannan, and Wilt, Michael. WISE-CASING: Containment and Monitoring Institute (CaMI), Calgary, Canada FEM-DC Model. United States: N. p., 2019. Web. doi:10.15121/1560531.
Wang, Jiannan, & Wilt, Michael. WISE-CASING: Containment and Monitoring Institute (CaMI), Calgary, Canada FEM-DC Model. United States. doi:https://doi.org/10.15121/1560531
Wang, Jiannan, and Wilt, Michael. 2019. "WISE-CASING: Containment and Monitoring Institute (CaMI), Calgary, Canada FEM-DC Model". United States. doi:https://doi.org/10.15121/1560531. https://www.osti.gov/servlets/purl/1560531. Pub date:Tue Apr 30 00:00:00 EDT 2019
@article{osti_1560531,
title = {WISE-CASING: Containment and Monitoring Institute (CaMI), Calgary, Canada FEM-DC Model},
author = {Wang, Jiannan and Wilt, Michael},
abstractNote = {For the model calculation we applied EM3D using completion diagram of CaMI site and a background resistivity consistent with the borehole logs. It was also important to use the accurate position of the return electrode. We note that for the data fit the code also incorporated well casings for well INJ and the other observation well, either OB1 or OB2, in the calculation. In summary, we demonstrate here, for this particular case, that the DC results may be a reasonable approximation to the low frequency EM data collected at CaMI. If this approximation continues to hold, then the extreme computational efficiency offered by the hierarchical modeling used in the DC simulations will permit us to explore far more model complexity, especially the pervasive and troublesome data artifacts that arise when doing EM surveys in mature, culturally developed sites. In Brief, both the low frequency and DC simulation codes provided very consistent results that match the field data really well, indicating their capability to help monitoring borehole integrity with the low frequency EM method.},
doi = {10.15121/1560531},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {4}
}