- How the NCEES PE Petroleum Exam Is Built
- Question Ranges by Domain at a Glance
- Domain 1: Drilling
- Domain 2: Production/Completion
- Domain 3: Facilities
- Domain 4: Reservoirs
- Domain 5: Economics and Management
- Exam-Day Mechanics That Shape Your Domain Strategy
- Sequencing the Five Domains in Your Prep
- Frequently Asked Questions
- The NCEES PE Petroleum exam covers five domains: Drilling, Production/Completion, Facilities, Reservoirs, and Economics and Management.
- Production/Completion has the largest published question range: 18 to 27 of the 85 questions.
- Facilities and Economics and Management each carry 9 to 14 questions, but each still matters.
- You get only the electronic NCEES PE Petroleum Reference Handbook; personal reference material is prohibited.
How the NCEES PE Petroleum Exam Is Built
The Principles and Practice of Engineering - Petroleum exam is administered by the National Council of Examiners for Engineering and Surveying (NCEES). NCEES's official label is "PE Petroleum," and this site uses "PE-P" as shorthand. The exam is computer-based and delivered at Pearson VUE test centers. It contains 85 questions, mixing traditional multiple-choice items with alternative item types. There is no partial credit on alternative item types, and no deduction for wrong answers, so an unanswered question is never better than an educated guess.
The content is organized under five top-level exam-objective headings in the NCEES exam specifications effective October 1, 2023. Those headings are Drilling, Production/Completion, Facilities, Reservoirs, and Economics and Management. If you are still working out whether this credential fits your career, start with What Is PE-P? and then return here for the content breakdown.
Question Ranges by Domain at a Glance
NCEES publishes a range of questions for each domain rather than a fixed count or a percentage. The table below reproduces those ranges exactly as published. They are ranges, not fixed allocations, and they have not been converted into percentages here because the exam can vary within them.
| Domain | Published Question Range | Relative Size |
|---|---|---|
| Drilling | 17-26 | Large |
| Production/Completion | 18-27 | Largest published range |
| Facilities | 9-14 | Smaller |
| Reservoirs | 17-26 | Large |
| Economics and Management | 9-14 | Smaller |
Three domains (Drilling, Production/Completion, and Reservoirs) carry the heaviest published ranges, while Facilities and Economics and Management are each roughly half the size. That does not make the smaller domains skippable. Because the exam has 85 questions in total, a candidate who ignores a 9-to-14-question domain gives up a meaningful slice of the available points.
Domain 1: Drilling
Drilling carries a published range of 17 to 26 questions, making it one of the three biggest domains. It rewards candidates who can move comfortably between calculation and operational judgment, which is why people with a drilling or well-construction background often feel at home here, while production and reservoir engineers sometimes underestimate it.
Drilling: What Candidates Should Be Ready For
Expect problems rooted in the physics and mechanics of constructing a wellbore safely and economically. Typical areas include:
- Wellbore pressure management: hydrostatic pressure, equivalent circulating density, and the relationship between pore pressure, fracture pressure, and mud weight
- Well control concepts, including kick detection and the reasoning behind shut-in and kill procedures
- Casing and tubular design considerations, including load cases and how they drive string selection
- Drilling fluids and hydraulics, including pump and pressure-loss relationships through the drillstring and annulus
- Cementing fundamentals and the objectives of a primary cement job
- Directional drilling geometry, including build rates and well trajectory calculations
The unit situation matters here. The exam uses both SI and U.S. Customary System (USCS) units, and oilfield drilling traditionally lives in field units. Practice converting cleanly so that a hydrostatic-pressure problem stated in one system does not trip you up when the Reference Handbook presents a relationship in another.
Domain 2: Production/Completion
Production/Completion has the largest published question range on the exam: 18 to 27 questions. If you can only afford to be exceptional in one domain, this is the one where depth pays off most directly. It spans the path from the reservoir sandface up through the wellbore and to the surface, and it ties closely to the Reservoirs domain.
Production/Completion: High-Value Topics
This domain links reservoir deliverability to what the well can physically produce and how the well is completed and maintained.
- Inflow performance relationships and how they pair with vertical lift performance in nodal analysis
- Artificial lift selection and basic sizing logic for rod pumps, gas lift, electric submersible pumps, and related methods
- Completion design: perforating, sand control, and the trade-offs between open-hole and cased-hole approaches
- Well stimulation fundamentals, including hydraulic fracturing and matrix acidizing and the logic for choosing between them
- Production troubleshooting: diagnosing declining rates, wellbore damage, and fluid-loading issues
- Multiphase flow in tubing and the pressure-drop concepts behind it
Because the range runs as high as 27 questions, a weak showing here is difficult to offset elsewhere. For a realistic read on how candidates fare overall, see PE-P Pass Rate 2026: What the Data Shows.
Domain 3: Facilities
Facilities carries a published range of 9 to 14 questions. It is one of the two smaller domains, but it is also where candidates with a pure subsurface or drilling background tend to feel least comfortable, which makes it a common source of lost points. It covers the surface handling of produced fluids from the wellhead through separation, treatment, measurement, and transport.
Facilities: What to Master
Think in terms of the surface process train and the equipment that moves and conditions produced fluids.
- Separation: two-phase and three-phase separator concepts, residence time, and the factors that govern separator performance
- Fluid treatment and handling, including emulsions, gas dehydration, and water handling concepts
- Pumps, compressors, and piping: flow, pressure-drop, and equipment-selection reasoning
- Pressure relief and basic process safety considerations
- Measurement and transport of oil and gas, including pipeline flow fundamentals
Facilities problems are often more direct than reservoir problems, which makes them efficient points for a prepared candidate. A solid grasp of the fundamentals here can convert a nine-to-fourteen-question domain into a reliable scoring area rather than a liability.
Domain 4: Reservoirs
Reservoirs shares the Drilling range at 17 to 26 questions. This is the domain that most directly reflects the physics of fluid storage and flow in porous media, and it underpins everything in Production/Completion. Candidates trained in reservoir engineering tend to be strong here, but the breadth can surprise them.
Reservoirs: Core Competencies
Expect a mix of rock and fluid properties, material balance, flow theory, and performance forecasting.
- Rock properties such as porosity, permeability, and saturation, along with relative permeability and capillary pressure concepts
- Reservoir fluid behavior: PVT properties, formation volume factors, and gas properties and correlations
- Volumetrics and reserves estimation fundamentals
- Material balance reasoning for oil and gas reservoirs, including drive mechanisms
- Well test analysis: interpreting pressure transient behavior and what it reveals about permeability, skin, and boundaries
- Decline curve analysis and production forecasting
- Basic enhanced recovery concepts and displacement efficiency
Well testing and decline analysis are especially calculation-friendly and show up in ways that connect to the Production/Completion domain. When you study these, ask yourself how the same result would feed a nodal analysis or an economic evaluation. That cross-domain habit is what the exam rewards.
Domain 5: Economics and Management
Economics and Management shares the smaller 9-to-14-question range with Facilities. It is the domain most likely to be underestimated by technically strong engineers, and it is also the least dependent on petroleum physics, which makes it a good place to secure dependable points with focused review.
Economics and Management: Key Areas
This domain tests how engineering decisions translate into value, risk, and responsible practice.
- Time value of money and discounted cash flow, including net present value and rate of return
- Project evaluation and comparing investment alternatives
- Cash flow construction for a petroleum project, including costs, revenues, royalties, and taxes at a conceptual level
- Risk and uncertainty in decision-making, including expected value reasoning
- Reserves classification concepts and their relationship to economic viability
- Professional practice, ethics, and engineering management considerations
Exam-Day Mechanics That Shape Your Domain Strategy
Knowing the domains is only half the picture. The testing format changes how you should prepare for each one.
Appointment Structure and Time
The exam appointment runs 9 hours and 30 minutes at a Pearson VUE test center. Within that, you get 8 hours and 30 minutes of actual testing. The remainder covers a 2-minute nondisclosure agreement, an 8-minute tutorial, and a 50-minute scheduled break. With 85 questions across 8.5 testing hours, pacing is less about rushing and more about sustaining accuracy through a very long day. Stamina is a real variable, and it favors candidates who have practiced extended sessions of mixed-domain problem solving.
Reference Material and Calculators
The exam is closed book except for the supplied electronic NCEES PE Petroleum Reference Handbook. Personal reference material is prohibited, and the NCEES guide lists no separate supplied design standards for Petroleum. In practical terms, you should learn the Handbook's layout thoroughly, because knowing where a relationship lives is as valuable as knowing the relationship itself. You must also use an NCEES-approved calculator, so confirm your model well before test day. For a concise reference of facts to keep at your fingertips, see the PE-P Cheat Sheet 2026.
Fees, Dates, and Eligibility
The NCEES fee is USD 400 per attempt, and licensing-board application charges are separate. The next annual administration is October 27, 2026. Eligibility is controlled by the licensing board you select, not by a single uniform rule. NCEES describes the intended candidate as an engineer with at least four years of post-college work experience, but that is a description of the target examinee rather than a universal admission requirement. Passing the exam is also not itself a professional license: the licensing board handles issuance and renewal. For the full picture, read PE-P Requirements 2026, PE-P Exam Dates 2026, and PE-P Certification Cost 2026.
Scoring and Historical Results
NCEES uses an equated minimum-competence standard and does not publish a universal passing score or a predetermined passing percentage. The issuer's pass-rate table, updated January 2026, reports that first-time candidates passed at 53% of 62 examinees and repeat candidates at 55% of 22 examinees. These are separate historical cohorts with small sample sizes. They are not predictions for October 2026 and not a measure of your personal odds. If you want to dig into what scoring means for you, see PE-P Passing Score 2026 and How Hard Is the PE-P Exam?.
| Exam Feature | PE Petroleum (NCEES) |
|---|---|
| Total questions | 85 |
| Testing time | 8 hours 30 minutes |
| Total appointment | 9 hours 30 minutes |
| Scheduled break | 50 minutes |
| Item types | Multiple-choice and alternative item types |
| Partial credit on alternative items | None |
| Penalty for wrong answers | None |
| Reference material | Electronic NCEES PE Petroleum Reference Handbook only |
| Units | SI and USCS |
| Fee per attempt | USD 400 |
Sequencing the Five Domains in Your Prep
You have a long list of material and a limited runway, so the order in which you tackle domains matters more than any generic study technique. The plan below is built around how the PE-P domains depend on one another, not around a one-size-fits-all calendar. Adjust the pacing to your own timeline and work schedule.
Reservoirs first, because everything feeds from it
- Rebuild rock and fluid property fundamentals and PVT correlations from the Handbook
- Work material balance, well test, and decline problems until the setup is automatic
Production/Completion, the largest domain
- Apply your reservoir work to inflow performance and nodal analysis
- Cover artificial lift, stimulation, and completion trade-offs
Drilling, using the Handbook as your map
- Practice hydrostatic, ECD, and hydraulics problems in both SI and USCS
- Review well control, casing design, cementing, and directional geometry
Facilities and Economics and Management
- Cover separation, treating, compression, and pipeline flow in compact, high-yield sessions
- Drill discounted cash flow and project comparison until the calculations are quick
Mixed-domain timed practice
- Take long, mixed sets that simulate the stamina demands of an 8.5-hour test window
- Revisit weak domains using a full practice exam from our practice test platform
Key Takeaway
Reservoirs underpins Production/Completion, so study them back to back. Treat Facilities and Economics and Management as efficient point-gainers rather than afterthoughts, since each still represents 9 to 14 questions.
For a broader preparation framework beyond domain sequencing, read the PE-P Study Guide 2026. When you are ready to test yourself against realistic problems, start with the free resources at the main practice site, and use targeted drills to close gaps by domain.
Frequently Asked Questions
The NCEES PE Petroleum exam covers Drilling, Production/Completion, Facilities, Reservoirs, and Economics and Management. These are the five top-level exam-objective headings in the specifications effective October 1, 2023.
Production/Completion has the largest published range at 18 to 27 questions. Drilling and Reservoirs each have a range of 17 to 26, while Facilities and Economics and Management each have 9 to 14. These are ranges, not fixed counts or percentages.
The exam has 85 questions and 8 hours 30 minutes of actual testing within a 9-hour-30-minute appointment. The appointment also includes a 2-minute nondisclosure agreement, an 8-minute tutorial, and a 50-minute scheduled break.
The exam is closed book except for the supplied electronic NCEES PE Petroleum Reference Handbook. Personal reference material is prohibited, and you must use an NCEES-approved calculator. The NCEES guide lists no separate supplied design standards for Petroleum.
No. Passing the examination is not itself a professional license. Your licensing board controls eligibility, approval, license issuance, and renewal, and its requirements vary. See the PE-P requirements guide and confirm details with your chosen board.