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Title: Process-based approach for the detection of CO2 injectate leakage

Abstract

The present invention includes a method for distinguishing between a natural source of deep gas and gas leaking from a CO.sub.2 storage reservoir at a near surface formation comprising: obtaining one or more surface or near surface geological samples; measuring a CO.sub.2, an O.sub.2, a CH.sub.4, and an N.sub.2 level from the surface or near surface geological sample; determining the water vapor content at or above the surface or near surface geological samples; normalizing the gas mixture of the CO.sub.2, the O.sub.2, the CH.sub.4, the N.sub.2 and the water vapor content to 100% by volume or 1 atmospheric total pressure; determining: a ratio of CO.sub.2 versus N.sub.2; and a ratio of CO.sub.2 to N.sub.2, wherein if the ratio is greater than that produced by a natural source of deep gas CO.sub.2 or deep gas methane oxidizing to CO.sub.2, the ratio is indicative of gas leaking from a CO.sub.2 storage reservoir.

Inventors:
;
Issue Date:
Research Org.:
Board of Regents, The University of Texas System, Austin, TX (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1408908
Patent Number(s):
9816972
Application Number:
14/317,836
Assignee:
Board of Regents, The University of Texas System (Austin, TX)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02A - TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
DOE Contract Number:  
FG04-90AL65847; FG26-05NT42590
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Jun 27
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES

Citation Formats

Romanak, Katherine, and Bennett, Philip C. Process-based approach for the detection of CO2 injectate leakage. United States: N. p., 2017. Web.
Romanak, Katherine, & Bennett, Philip C. Process-based approach for the detection of CO2 injectate leakage. United States.
Romanak, Katherine, and Bennett, Philip C. Tue . "Process-based approach for the detection of CO2 injectate leakage". United States. https://www.osti.gov/servlets/purl/1408908.
@article{osti_1408908,
title = {Process-based approach for the detection of CO2 injectate leakage},
author = {Romanak, Katherine and Bennett, Philip C.},
abstractNote = {The present invention includes a method for distinguishing between a natural source of deep gas and gas leaking from a CO.sub.2 storage reservoir at a near surface formation comprising: obtaining one or more surface or near surface geological samples; measuring a CO.sub.2, an O.sub.2, a CH.sub.4, and an N.sub.2 level from the surface or near surface geological sample; determining the water vapor content at or above the surface or near surface geological samples; normalizing the gas mixture of the CO.sub.2, the O.sub.2, the CH.sub.4, the N.sub.2 and the water vapor content to 100% by volume or 1 atmospheric total pressure; determining: a ratio of CO.sub.2 versus N.sub.2; and a ratio of CO.sub.2 to N.sub.2, wherein if the ratio is greater than that produced by a natural source of deep gas CO.sub.2 or deep gas methane oxidizing to CO.sub.2, the ratio is indicative of gas leaking from a CO.sub.2 storage reservoir.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {11}
}

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