Laboratory-based evaluation of cement degradation processes in CSG wells in Queensland
Investigating the potential for cement degradation and related processes in coal seam gas (CSG) wells in Queensland’s Surat Basin
CSIRO scientists will conduct a series of ageing experiments on cured cement samples, subjecting those samples to formation fluids under downhole conditions and analysing the cement for changes.
The work builds on a previous GISERA project – Queensland CSG Well integrity: cements, steels and microbial activity (2024) – which focused on reviewing Well Completion Reports (WCRs) for a randomly selected set of wells in the Surat, Bowen and Galilee basins.
Project results will improve understanding of the potential for long-term cement degradation and the associated implications for well integrity.