Viscometers are essential pieces of equipment in the oil industry because they help to ensure the accurate control of crude oil, refined fuels, lubricants, and petrochemical fluids across a broad range of temperatures, pressures, and processing conditions.
In the industrial oil industry, viscosity determines how fluids flow through pipelines, atomize during combustion, lubricate machinery, and behave under high‑pressure reservoir conditions. Because oil viscosity changes dramatically with temperature, pressure, and chemical composition, precise viscosity measurement is vital for safety, efficiency, and product quality. For this reason, viscometers are widely used to ascertain and check the viscosity of oil and can help to deliver real‑time viscosity data, enabling operators to optimise production, reduce waste, and maintain compliance with industry standards.
Why Viscosity Matters in the Oil Industry?
Viscosity is a key parameter across crude extraction, refining, fuel blending, lubricant production and petrochemical processing. Inline viscometers are used extensively to measure crude oil and refined fractions under extreme conditions, ensuring predictable and cost‑effective production. These instruments provide continuous monitoring, allowing real‑time optimisation and eliminating the need for frequent laboratory sampling. Sensors with explosion protection (Ex) are used across pipelines and refining systems to measure viscosities while keeping people and infrastructure safe.
In smaller petrochemical, lubricant and consumer applications, viscometers are used to measure asphalt, bitumen, diesel oil, and engine lubricants to ensure consistency and maintain end user expectations. The oil used in car engines or small scale machinery needs to behave in the correct manner at the required temperatures and also keep correctly when in storage.
How Viscometers Support Oil Production & Refining?
Viscometers are used throughout the oil industry for:
Crude oil characterisation – understanding reservoir fluid behaviour under geological pressures and temperatures.
Fuel blending – ensuring correct viscosity in bunker fuels such as IFO 180, 380, and 580 during heating and mixing.
Combustion optimisation – controlling viscosity of residue oils to improve atomisation and reduce emissions.
Lubricant formulation – ensuring oils maintain correct flow and film strength under mechanical stress.
Drilling and fracturing fluids – monitoring viscosity of drilling muds, cement slurries, and fracturing fluids.
Advanced viscometers, such as PVT‑rated systems, can measure viscosity under extreme reservoir conditions, including high pressure, high temperature, and corrosive environments. These systems provide accurate, repeatable data with minimal sample volume, supporting enhanced oil recovery and core analysis.
Benefits of Using a Viscometer in the Oil Industry
Real‑Time Process Control
Inline viscometers provide instant feedback, enabling automated adjustments that improve efficiency and reduce waste.
Improved Safety & Compliance
Explosion‑proof (Ex) viscometers allow safe operation in hazardous zones, including Zone 0 environments.
Enhanced Product Quality
Accurate viscosity control ensures fuels, lubricants, and petrochemical products meet strict industry specifications and allow the machinery to function correctly.
Types of Viscometers Used in the Oil Industry
Inline viscometers – continuous monitoring for crude oil, fuels, drilling fluids, and refinery processes.
PVT viscometers – specialised systems for reservoir fluid analysis under extreme conditions.
Cone and plate viscometers – used in laboratories for detailed analysis and quality control.
Viscometers are indispensable pieces of equipment in the oil industry, ensuring efficient production, safe operation, and consistent product performance. Our NuLine cone and plate viscometer is the perfect choice for R&D, small-scale production and laboratory quality control in the motor, engine and lubricant sector, giving accurate, fast results using small sample volumes across a range of temperatures and shear rates.