Drilling an Array of Monitoring Wells for a CCS Experiment: Lessons From Otway Stage 3
12 Pages Posted: 29 Mar 2021 Last revised: 31 Mar 2021
Date Written: February 1, 2021
The CO2CRC Otway Stage 3 project is developing low-impact methods for near-continuous monitoring of storage sites. This paper reports on the design, drilling, instrumenting, and early results from an array of an injector and five monitoring wells, spread over a km2. Highlights include the deployment and use of distributed acoustic sensors on casing, and baseline injections and interpretation of pressure tomography.
Keywords: CO2 storage; monitoring; DAS; VSP,pressure tomography; earth tides
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