Self-elevating jackup MODUs. Outside CII scope; per-operating-day intensity is the North Sea / Gulf of Mexico benchmark.
Formula
$$ \text{CO}2^\text{year} = \sum_j F_j \cdot C{f,j} $$
$$ \text{Intensity} = \frac{\text{CO}2^\text{year}}{d\text{drilling}} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $F_j$ | Mass of fuel $j$ | t | bunker log |
| $C_{f,j}$ | CO₂ factor | t CO₂ / t fuel | MEPC.364(79) |
| $Bench (Drilling days / year)$ | operational benchmark | d | operations log |
| $d_\text{op}$ | Operating days | d | operations log |
Jackups burn ~ 15–30 t MGO per drilling day depending on water depth and drilling programme. Power-from-shore cables (where available) zero out the operational emissions entirely.
Sources
- IADC - MODU operational data.
- IMO MEPC.364(79) - Cf conversion factors.