Crude Oil Assay
Crude Oil Assay is a comprehensive analysis of crude oil to determine its physical, chemical, and hydrocarbon characteristics. This process is performed in a laboratory with the primary goal of providing detailed information on the quality and potential products that can be produced from the crude oil.
Scope
Crude oil assay is a series of comprehensive tests to determine the characteristics of crude oil, including molecular composition, physicochemical properties, distillation profile, and impurity content.
Assay used by:
- Refinery → determines refinery configuration, product yield, and process unit requirements.
- Traders & Marketers → assess the commercial value and competitiveness of crude oil.
- Producers → optimize production and feedstock strategies.
Types of Crude Oil Assay Tests
Reference Standard
ASTM Standards
D2892 (TBP), D5236 (Vacuum Distillation), D5134 (PONA), D6730 (Detailed Hydrocarbon), D6560 (Asphaltene), D4294 (Sulfur), D664 (Acid Number), D4052 (Density).
UOP Methods
UOP 46 (Wax), UOP 938 (Mercury), UOP 391 (Metals).
ISO Standards
ISO 12185 (Density), ISO 6978-2 (Mercury in Hydrocarbons).
Proprietary Refinery Models
Used for yield prediction & product slate optimization.
Standards and References
TBP & ASTM Distillation Curves
Yield Distribution
Product Properties
Contaminant Profile
Comparative Analysis
Service Excellence
Comprehensive Assay
Covers ]50 technical parameters.
Decision Support
Supports refinery planning, crude selection, and trading economics.
Digital Database
Assays are stored & accessible for trend analysis.
Expert Evaluation
Insights from petroleum chemists and process engineers.
Regulatory Compliance
Complies with ASTM, ISO, UOP, and IP standards.
With its Crude Oil Assay service, PT. Hidea Inti Daya helps refineries, traders, and producers gain a deeper understanding of crude oil characteristics, thereby improving profitability, operational efficiency, and commercial competitiveness.
