Project Overview

SPD was engaged to provide a comprehensive well engineering design study for a two-well CO₂ storage development programme. The scope required a generic high-level well and completion design, identification of critical long-lead equipment and potential constraints, and delivery of ±40% accuracy Level 1 cost estimates for both the full two-well programme and a single-well option. The study was completed within a five-month programme drawing on eight engineering disciplines.

SPD’s Approach

SPD conducted a comprehensive evaluation of the storage field to determine optimal CO₂ injection well designs. All existing suspended wells were assessed and found unsuitable for reuse. The design addressed CO₂ phase behaviour, corrosion management, metallurgy selection (GRE-lined vs chrome tubulars), elastomer selection for explosive decompression risk, metal-to-metal wellhead sealing, fibre-optic DTS monitoring and multi-barrier abandonment design.

Results & Value Delivered

✔ Full Design Study in 5 Months — Complete CO₂ injection well basis of design across eight disciplines within the programme timeline.

✔ CO₂-Specific Material Strategy — GRE-lined vs chrome evaluation and specialist elastomer selection provided clear material specification.

✔ ±40% Cost Estimates Delivered — For both the two-well programme and single-well option.