Challenge:
Developing a large offshore gas resource while meeting strict emission reduction goals presents a complex challenge. Under increasing scrutiny from regulators and stakeholders, the project must balance energy production with environmental responsibility. For this Australian gas field, substantial portion of emissions originates from naturally occurring reservoir CO₂, driving the need for an effective Carbon Capture and Storage (CCS) solution. The scope involved planning a comprehensive well construction and operational strategy to enable CO₂ removal and injection in a saline aquifer, ensuring both technical and economic feasibility while meeting regulatory standards.
Solution:
- Conducted a comprehensive feasibility study addressing technical and operational challenges.
- Incorporated knowledge-sharing sessions with mature CCS projects (Snohvit, Sleipner, Northern Lights, Net Zero Teesside, and Quest) to gain insights into operational risks and best practices.
- Performed multifaceted studies, including:
Core flood & cement integrity testing
Rock strength assessments
Well transient modeling - Collaborated with Reservoir, Facilities, Subsea, and Flow Assurance teams to ensure design alignment with subsurface objectives and injection system constraints.
- Worked closely with the Subsurface team to develop an MMV (Measurement, Monitoring, and Verification) plan for ongoing reservoir surveillance and CO₂ plume tracking.
Value Added:
- Identified key risks and opportunities early, eliminating the need for a Select phase and advancing the project schedule to support competitive acreage bids.
- Highlighted crucial design aspects related to CO₂ phase behavior and Joule-Thomson (J-T) cooling, minimizing risks in well design and operations.
- Provided a cost-effective, technically sound CCS solution that positioned the project strategically in the region’s energy market.
