If you are planning to drill a well anywhere in the world, there is a good chance that someone — a regulator, an insurer, a joint venture partner, or your own management team — will ask for a Well Examination to be carried out before operations begin. But what exactly is a Well Examination, who needs one, and how do you make sure it actually protects you?
What Is a Well Examination?
A Well Examination is an independent technical review of a well programme, carried out by a competent engineer who has no commercial interest in the outcome. The examiner reviews the well design, the drilling programme, the well control philosophy, the BOP configuration, the completion design, and the operational procedures — and issues a formal Well Examination Certificate confirming that the well has been assessed against industry standards and applicable regulatory requirements.
The critical word is independent. A Well Examination carried out by an engineer employed by the drilling contractor, the cementing company, or any other party with a commercial interest in the well is not a genuine independent examination. Its value — both technically and in the eyes of a regulator — is fundamentally different from one carried out by a firm with no stake in the outcome.
When Is a Well Examination Required?
The short answer: more often than most operators realise, and in more places than you might expect.
When regulations require it
A growing number of jurisdictions now require independent Well Examination as a regulatory condition before any well operations can commence. New Zealand introduced mandatory independent Well Examination requirements that now apply across the country’s petroleum and geothermal sectors. Operators in the United Kingdom, Norway, Australia and across Southeast Asia face similar requirements under their respective regulatory frameworks. The specific trigger — whether it is any well operation, any new-drilled well, or any operation above a defined risk threshold — varies by jurisdiction, so checking the local requirements before you plan your programme is essential.
When insurers or lenders require it
Even where regulation does not mandate an examination, many energy insurance underwriters and project finance lenders require one as a condition of coverage or funding. An independent Well Examination report gives them assurance that the well has been technically scrutinised by someone with no incentive to overlook problems. For new entrant operators, independent CCS developers and geothermal project companies accessing project finance, this is increasingly a standard requirement.
When commercial good sense requires it
The strongest reason for commissioning a Well Examination is not regulatory or commercial — it is technical. A genuine independent examination, carried out by an experienced well engineer who reads the programme with fresh eyes, consistently finds things that the in-house team missed. Not because the in-house team is incompetent, but because familiarity breeds assumptions. The examiner who has not lived with the well design for six months is more likely to notice the contingency that was never written down, the kick tolerance calculation that used an optimistic pressure case, or the casing shoe depth that does not match the updated pore pressure model.
That finding — made before spud, not after — is worth far more than the cost of the examination.
What Does a Well Examination Cover?
A thorough Well Examination reviews the full well programme, not just the headline design. This typically includes:
- Well design: casing design, cementing design, pore pressure and fracture gradient prediction, kick tolerance at every casing shoe, and BOP configuration and ratings
- Drilling programme: mud weight programme, wellbore stability management, lost circulation strategy, and drilling parameter guidelines
- Well control philosophy: shut-in procedures, well control response, kill methodology, and decision thresholds for abnormal drilling conditions
- Completion design: tubing design, wellhead configuration, and downhole completion integrity
- Abandonment provisions: barrier placement strategy and P&A philosophy for temporary and permanent abandonment
- Operational procedures: pre-spud readiness, emergency response provisions, and contractor interface management
The examiner reviews all of this documentation, raises questions on anything that is missing, unclear or technically questionable, and does not issue a certificate until those questions are answered to their satisfaction.
What a Well Examination Is Not
A Well Examination is not a rubber stamp. An examiner who reviews a programme and issues a certificate without raising any findings has either been given a flawless programme — which is rare — or has not read it carefully enough. Experienced operators expect their examiner to raise findings; a certificate with no questions asked is itself a warning sign.
A Well Examination is also not a substitute for the operator’s own quality assurance. It is a final independent check — it does not replace the peer reviews, design reviews and management of change processes that should happen upstream of it. An examination that is the only technical review a well programme receives is a programme that was not properly engineered.
How to Choose an Independent Well Examiner
Three questions matter most when selecting a Well Examiner:
- Are they genuinely independent? The examiner should have no commercial relationship with the drilling contractor, the well services suppliers, or any other party involved in the well. An examiner who also sells drilling tools, cementing services or directional drilling is not independent — their findings will always be influenced, consciously or not, by their commercial relationships.
- Do they have relevant operational experience? A Well Examination is only as good as the examiner’s ability to recognise what a good programme looks like and what a dangerous assumption sounds like. That requires direct experience designing and drilling wells of the relevant type — not just knowledge of the applicable standards.
- Will they actually push back? The most important quality in an examiner is the willingness to raise difficult findings and hold the line on them. An examiner who accepts whatever the operator tells them at face value is not providing the independent assurance that an examination is supposed to deliver.
The Pre-Spud Notification Window
One practical point that catches operators out: most regulatory frameworks require the Well Examination Certificate to be submitted as part of a pre-spud notification — typically 21 days before operations begin. The examination process needs to be planned into the programme schedule, not treated as a last-minute box to tick. An examination that starts two weeks before spud, with a drilling programme that is still being revised, is likely to cause delays. Commission your examiner early, and make sure the programme is sufficiently complete before the examination begins.
SPD Group’s Well Examination Service
Superior Performance Design has been providing independent Well Examination services across Asia-Pacific, the Middle East and beyond for over 25 years. When mandatory Well Examination requirements were introduced in New Zealand, SPD built the national framework — writing the policies, standards and review templates that became the country’s benchmark — and delivered all 11 certificates for a major onshore campaign without a single delay to drilling operations. That methodology has since been adopted across multiple regulatory jurisdictions.
Our examiners have designed wells and supervised drilling operations. They read drilling programmes the way a driller reads them — looking for what is missing, what is optimistic, and what could go wrong. And because SPD has no relationship with any drilling contractor, cementing company or directional drilling provider, our findings are never influenced by anything other than the technical reality of the programme in front of us.
If you have an upcoming well programme and need to understand your Well Examination obligations — or simply want a genuinely independent set of eyes on your design before spud — get in touch with our team.