Competent person reports (CPRs) and annual reserves reporting
Clear, accurate and internationally compliant reserves reporting provides your organisation with a secure basis for meeting regulatory requirements, attracting investment and progressing transactions. Such reports help boards, investors, regulators and exchanges assess asset performance and risk with confidence.
Through our independent, evidence-based CPRs and annual reserves reports, technical, commercial and regulatory information is distilled into coherent, defensible conclusions tailored to your assets. This strengthens your credibility, supports compliance obligations and reinforces confidence in the performance of your subsurface portfolio.
Using CPRs to strengthen your market position
Independent CPRs and annual reserves reports bring subsurface data, development plans and commercial assumptions together in a single, coherent view of each asset. This creates a shared reference point for your governance and finance teams, streamlines dialogue with regulators and capital providers and helps sustain confidence in portfolio performance over time.
Technical depth and commercial insight in one reporting team
Our reserves and reporting team brings together geoscientists, reservoir engineers and commercial specialists who focus on coherent, technically robust reporting for conventional oil and gas and carbon storage resources. Services include:
- Audit of client and operator interpretations and models.
- Independent subsurface interpretation using primary data.
- Classification of reserves and resources (1P, 2P, 3P; contingent and prospective).
- Assessment of geological, development and commercial risk.
- Volume estimation aligned with project maturity, development plans and market conditions.
This technical clarity helps stakeholders understand the full subsurface profile of an asset and its development potential.
Commercial and economic evaluation
Reserves and resource reporting must align technical outcomes with commercial reality. We provide:
- Economic Limit Test (ELT) assessments.
- Full economic valuations, including NPV and EMV.
- Cost sheets and scenario inputs for client-led modelling.
- Carbon pricing and taxation integration where relevant.
Our evaluations support financing discussions, strategic planning and investment decision-making across portfolios that include UK and international assets.
Regulatory and standards alignment
Our team works with international reporting frameworks and listing requirements, helping clients demonstrate compliance and consistency. This includes:
- PRMS, SRMS, COGEH.
- SEC and NI 51-101.
- Listing rules for LSE, NYSE, TSX, FWB, SEHK and SGX.
This approach enables our clients to submit reserves and resources reports that meet the expectations of exchanges, financial institutions and regulators worldwide.
Oil and gas reserve and resource assessments
We can prepare CPRs and reserves reporting for fields at any stage of maturity. Capabilities include:
- Geophysical, geological and petrophysical characterisation of fields, fluids, reservoirs and seals.
- Decline curve analysis.
- Full field dynamic model assessment.
- Economic modelling of reserves.
These assessments support screening, equity investment and debt provision for oil and gas projects.
Carbon storage assessments
For carbon capture, utilisation and storage (CCUS) projects, we provide CPRs and reserves-style reporting for carbon storage resources. Our capabilities include:
- Evaluation of depleted hydrocarbon fields, saline aquifers and similar formations.
- Storage volume and efficiency estimation.
- Containment assessment and development concept evaluation.
- Geological characterisation of storage formations and seals.
These assessments support screening, investment and permitting decisions for CCUS projects in the UK and beyond.
ESG and emissions reporting
Where required, we incorporate environmental, social and governance factors into CPRs and reserves documentation. Services include:
- ESG-aligned reporting and disclosures.
- Integrated greenhouse gas (GHG) assessments.
- Support for corporate climate and sustainability targets.
This helps clients respond to the expectations of regulators, investors and the broader community regarding climate and sustainability performance.
Communication and transparency
Our reports are structured to enable technical specialists and non-technical stakeholders to follow the line of reasoning with ease. We provide:
- Step-by-step narratives of technical reasoning.
- Explicit rationale for classifications, ranges and assumptions.
- Transparent documentation that supports due diligence and audit processes.
This approach enables investors, lenders and regulatory bodies to trace how conclusions were reached and reinforces internal oversight.
Making reserves reporting work for your strategy
GHD provides independent, internationally compliant evaluations that help clients align subsurface assessment with strategic, regulatory and financial priorities. Whether assessing oil and gas reserves or carbon storage potential, our integrated teams apply rigorous technical, commercial and ESG criteria to develop reports that withstand detailed review. The result is a set of evaluations that support long-term value and open, evidence-based communication with regulators, financiers and decision-makers.