Organizational GHG verification
The annual inventory, examined at source.
The inventory route
- Home
- Experience
- Sectors
- Oil and gas — what makes this sector technically different.
Oil and gas — what makes this sector technically different.
Explicitly named in our accredited product carbon footprint scope: extraction, production, refining and pipeline distribution.
Hardest data points
Where inventories in this sector fail.
- Flaring, venting and fugitive emissions, and the method behind each — a single "flare factor" covering all three cannot be verified
- Methane specifically, which carries a different global warming potential and a different measurement problem from CO₂
- Metering across custody transfer points, and whether the inventory reconciles to the same volumes the commercial system uses
- The boundary between upstream, midstream and refining assets on one site, and which entity controls which
- Operational versus equity versus financial control consolidation, and whether the chosen approach is applied consistently across every joint venture
- Well workovers, completions and blowdowns, which are episodic and often fall outside the routine data collection
- Compressor seal and starter gas venting, which is continuous and rarely metered
- Imported and exported energy across a complex site, where the same megawatt-hour can be counted twice or not at all
What is examined
The evidence we will ask for.
- The consolidation approach as documented, with the equity or control basis for every asset in the boundary
- Flare and vent quantification method with the gas composition data behind it
- Leak detection and repair programme records, including detection technology and survey coverage
- Custody transfer meter records and their calibration history
- Episodic event logs — workovers, completions, blowdowns, upsets
- Energy import and export records reconciled across the site
Most requested
The services this sector asks for.
Product carbon footprint
Functional unit, boundary, allocation and the model behind the number.
The product routeCBAM readiness
The evidence file, the monitoring plan and the decision on actual values.
The CBAM route
The normative frame
The standards the work runs under.
ISO 14064-1:2018 · ISO 14064-3:2019 · ISO 14067:2018. Consolidation follows the approach declared under ISO 14064-1:2018 clause 5.
Scope position: Explicitly inside the accredited product carbon footprint sectors. Confirm the specific activity at pre-engagement.
Other sectors, different evidence problems
Describe the claim — not the service.
Tell us what must be relied on, who will rely on it and by what date. We will confirm the correct programme, evidence requirement and responsible entity — or tell you it is outside our scope.