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A feasibility study for detection threshold of CO (sub 2) at shallow depths at the CaMI Field Research Station, Newell County, Alberta, Canada

Marie Macquet, Donald C. Lawton, Amin Saeedfar and Kirk G. Osadetz
A feasibility study for detection threshold of CO (sub 2) at shallow depths at the CaMI Field Research Station, Newell County, Alberta, Canada
Petroleum Geoscience (May 2019) Pre-Issue Publication

Abstract

We present the results of a feasibility study for seismic monitoring using conventional surface seismic experiments at the CaMI Field Research Station, Alberta, Canada where a small volume of gas-phase CO (sub 2) is being injected into a sandstone reservoir at a depth of 300 m. We first apply a careful fluid substitution procedure to the results of reservoir gas saturation and pressure responses obtained from fluid flow simulation. We test different methods to compute the bulk modulus of the fluid for different fluid saturation models. Assuming a semi-patchy model and considering only the replacement of brine with a maximum saturation of 50% CO (sub 2) , we estimate the reduction in P-wave velocity to be 20%. Adding an increase in pore pressure of 2.7 MPa increases the P-wave velocity reduction to 32%. After including a field-based signal-to-noise ratio of 5% to the synthetic seismic data, the time-lapse seismic anomaly should be detectable after 1 year of injection (266 tonnes of CO (sub 2) ).


ISSN: 1354-0793
Serial Title: Petroleum Geoscience
Serial Volume: Pre-Issue Publication
Title: A feasibility study for detection threshold of CO (sub 2) at shallow depths at the CaMI Field Research Station, Newell County, Alberta, Canada
Affiliation: University of Calgary, Department of Geoscience, Calgary, AB, Canada
Published: 20190503
Text Language: English
Publisher: Geological Society Publishing House for EAGE (European Association of Geoscientists & Engineers), London, United Kingdom
References: 44
Accession Number: 2019-044666
Categories: Applied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 tables, sketch map
N49°00'00" - N60°00'00", W120°00'00" - W110°00'00"
Secondary Affiliation: CMC Research Institutes, CAN, Canada
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 201911
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