Tailored crude oil assay services for feedstock evaluation, refinery optimization, and commercial decisions—delivered by certified labs and global experts.
Intertek Caleb Brett delivers tailored crude oil assay services to support feedstock evaluation, refinery optimization, and commercial decisions. With laboratories strategically located across North America, Europe, MEA, and APAC, and equipped with ASTM, ISO, and IP certification, our specialists use state-of-the-art technology and modeling tools.
Intertek Caleb Brett’s crude oil assay services provide a comprehensive profile of whole crude and boiling-range fractions through both physical and simulated distillation—up to 565 °C. Our assays measure all critical quality parameters, including sulfur, nitrogen, metals, acidity, viscosity, cold properties, and potential contaminants.
We offer advanced molecular insights such as GC-based hydrocarbon speciation, SARA fraction analysis, and trace detection of mercury and other elements. Clients receive customizable reporting formats compatible with leading refinery modeling tools and linear programming systems. For fast decision-making, Caleb Brett’s Rapid Yield Assay delivers near-real-time quality data using ASTM D7900 and D7169 methods, making it ideal for quick turnaround from wellhead to refinery.
Core Assay Methods & Standards
Test Type | Standard | Scope |
---|---|---|
Atmospheric Distillation | ASTM D2892 | Stabilized crude to ~400 °C, true boiling-point distillation |
Vacuum Distillation | ASTM D5236 | Boiling cuts up to ~565 °C, prevents cracking |
Simulated Distillation | ASTM D2887, D7169 | Alternative monitoring via GC |
API Gravity | D5002, D4052, D287 | Density estimations used in NYMEX criteria |
Sulfur, Nitrogen, Metals | D4294, D5453, D4629, etc. | Chemical contaminant analysis |
Cold Properties | D2386, D2500, D97 | Pour point, cloud point, freeze point |
Viscosity & Vapor Pressure | D445, D7042, D323, D5191 | Flow characteristics and volatility |
SARA Fractionation | IP143, IP469 | Heavy oil component analysis |
TBP Curve | ASTM true boiling point | Yield-based modeling input |
Frequently Asked Questions (FAQ)
A crude oil assay is a detailed evaluation of crude feedstock using physical and chemical tests—including distillation, viscosity, sulfur content, contaminant levels, molecular profiles—that characterizes quality and refinery suitability.
Standard assays may take days; Intertek Caleb Brett’s Rapid Yield assay delivers near-realtime results, often within 24 hours of sample receipt.
Atmospheric (ASTM D2892) for cuts up to ~400 °C; vacuum (ASTM D5236) extends to ~565 °C; simulated distillation via GC (D2887 or D7169) offers alternatives.
Yes—Intertek offers trace-level analysis of mercury, methanol, chlorides, and other contaminants critical to processing and catalyst performance.
Absolutely—Reports are available in formats directly compatible with linear programming and optimization software tailored to refinery operations.
Yes—Labs adhere to ASTM, ISO, and IP standards with ISO 17025 certification and regional approvals such as UKAS.
SARA profiling evaluates crude’s saturates, aromatics, resins, and asphaltenes—especially useful for heavy oils to predict deposition and performance traits.
Related Solutions
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Mercury Speciation Analysis of Refinery Feedstocks
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Detailed Hydrocarbon Analysis
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Crude Oil and Petroleum Feedstocks Tests
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SARA Heavy Oil Analysis
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Crude Oil Grades and Types
Crude Oil Assay Endorsement
“Superb support from Intertek allowed crude oil samples to be analyzed and approved in 24 hours while the cargo was still at sea, enabling the crude oil to be optimally utilized by our refineries and enabled the purchase of a second cargo only 4 days later.”Crude Oil Assay ASTM D2892
Caleb Brett Cargo Inspection & Analytical Assessment Services
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