Abstract
AbstractAccording to the Intergovernmental Panel on Climate Change (IPCC) of the United Nations (UN), rise in atmospheric concentration of carbon dioxide (CO$${_2}$$
2
) due to anthropogenic factors is considered as the primary driver for global climate change. With almost every major corporation around the world working towards their “net-zero goals”, it is becoming increasingly important to have more technologies that can help reduce carbon footprint. Achieving sequestration of CO$${_2}$$
2
in the subsurface through Carbon Capture Utilization and Storage (CCUS) technologies like CO$${_2}$$
2
-Enhanced Oil Recovery, CO$${_2}$$
2
-Enhanced Geothermal Systems, CO$${_2}$$
2
-Enhanced Coal Bed Methane, etc. is well accepted. We introduce yet another attractive CCUS opportunity through well rehabilitation. Aqua Freed® and Aqua Gard® are well-known well rehabilitation and preventive well maintenance technologies that utilize (inject underground) liquid CO$${_2}$$
2
for the purpose. The goal of this study was to quantify the storage capacity of Aqua Freed® and Aqua Gard®, and establish their CCUS credentials. Depending on the well being serviced, these technologies can inject up to 40 US tons of CO$${_2}$$
2
per well. Based on field data collection and statistical modeling, we estimated that 82–96% (median 90%) of the injected CO$${_2}$$
2
remains in the subsurface post injection. Overall, our results and analysis of the US market suggest that using CO$${_2}$$
2
for well rehabilitation and maintenance has a storage potential of several megatonnes of CO$${_2}$$
2
annually in the US alone.
Publisher
Springer Science and Business Media LLC
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