Tier 01
Fast read
Two specialists, one short written opinion
- Your question read by two disciplines, not one
- A short written opinion: what holds, what does not
- Marked working opinion — not a signature
Independent second opinion · subsurface, wells and facilities
A second opinion, before the decision is signed.
More than a hundred years of combined field experience across drilling, completions, reservoir, production and surface facilities — including the regions where the textbook runs out. We read the question, not the slide deck.
Drilling
Completions
Reservoir
Production
Facilities
Economics
Why a second opinion
The first answer was built by the people
who wanted it to be right.
01
One discipline signs for all
A reservoir number that ignores the drilling plan, or a completion design that ignores the facilities, is internally consistent and wrong.
02
The team is too close to it
An asset team defends a forecast it has lived with for two years. Fresh eyes see the assumption that was never written down.
03
Nobody has time to re-derive it
A proper review swallows the decision window. By the time it lands, the choice has already been made on the original number.
Where the bench comes from
Arctic and sub-Arctic, deserts, deepwater, remote gas and mature waterfloods. The places that teach judgement rather than procedure.
The offer
One bench, two standards of answer.
You choose how far the answer has to travel: a fast read for the decision in front of you, or a review that survives a committee.
Tier 02
Verified & signed
Checked across the full chain, under a name
- Independent re-derivation against a written protocol
- Drilling, reservoir and facilities reviewed together
- A named engineer signs; the review record stays attached
The protocol
What “signed” actually means.
A defined process, not an adjective. Every signed answer carries the same four steps and the same paper trail.
-
01
Scope
The decision, the admissible data, and what the answer will not cover.
-
02
Review
An independent re-derivation: sources, arithmetic, assumptions, plausibility — checked by each discipline the question touches.
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03
Sign
Issued under a named engineer's signature, review record attached.
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04
Record
Version, inputs and reviewer logged — reproducible and defensible.
The bench
A hundred years, spread across the whole chain.
One question rarely belongs to one discipline. The bench is built so that the drilling answer and the facilities answer are in the same room as the reservoir answer.
Drilling & completions
Well design, casing and mud programmes, horizontal wells and multistage fracturing, interference between fractures, lifting and workover choices.
Reservoir & reserves
PRMS 2018 and SEC classification, decline analysis, material balance, pressure support, volumetrics and the assumptions behind each.
Production & surveillance
Waterflood diagnostics, voidage replacement, artificial lift, well performance and the difference between a forecast and a plan.
Facilities & surface
Gathering, separation, compression, water handling and the capacity limits that decide what the subsurface is allowed to deliver.
Field development
Well count and spacing, phasing, plateau and ramp-up, debottlenecking and the cost of starting late.
Economics
Cash-flow screening, discounting, tariff and fiscal terms, and the sensitivity that tells you which assumption the decision actually hangs on.
Disciplines in detail
Where we are worth asking.
Production forecasting
Decline analysis, type wells, material balance, flowing-pressure limits.
Waterflood surveillance
Pattern-level voidage replacement and sweep diagnosis, well by well.
Field development
Lateral placement, staging, interference, well count and spacing.
Injection allocation
Voidage shared between producers by distance to the lateral, permeability and net pay.
Engagement
Start with one real question.
No demo theatre. Send the decision and the data behind it; the bench decides whether a second opinion is worth your money.
Second-opinion pilot
One question · one asset · a written opinion
- Read by the disciplines the question actually touches
- A short note on what holds, what does not, and what we could not verify
- If the answer has to be signed, say so at the start
Standing bench
The same team on call for your asset, so the second question costs you a phone call rather than a procurement cycle.
Signed review
A full cross-discipline review: every discipline the question touches, one named signature, the working file attached.
Scope sets the work and the work sets the fee, so we agree both after the first conversation. The constraint is expert time, and we would rather say that than pretend otherwise.
What every answer rests on
The rock, the data, and the assumptions somebody chose to write down.
Contact
Tell us the question you cannot get signed.
Describe the decision and who is waiting for it. We will tell you whether the bench is the right second opinion for it.
Direct contact@reserves-horizon.com
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