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Petroleum laboratory Services

ERC offers a complete array of field sampling and hydrocarbon laboratory services to the petroleum industry. The laboratory provides conventional PVT tests and the results can be used for simulations for measurement planning, test workflow and estimating test results.


Our petroleum testing laboratory can support petroleum products testing for oil refineries, power plant stations, fuel stations, fuel tank farms, organisation, academic institution, or government agency in outsourcing independent, commercial contract oil, gasoline, petroleum, and petrochemical laboratories to do all the routine and non-routine oil, gasoline, petrochemical, biodiesel, alternative fuels, hydrocarbon and petroleum testing, surveys, analysis, experiments and research studies including ISO 8217 testing.


A2.1.1        PVT Laboratory Studies

Pressure-Volume-Temperature (PVT) laboratory studies involve analysis of reservoir fluid samples by simulating the fluid flow of oil and gas from the reservoir to the surface, under various conditions of pressures, volumes and temperatures. Essentially, results of PVT analysis provide for effective and efficient reservoir engineering studies including classifying the reservoir fluid and to assess the quality of PVT data obtained. High quality PVT data will reduce uncertainty in reservoir fluid properties, provide a sound foundation for reservoir engineering studies/judgement, to improve investment efficiency.


ERC PVT laboratory technicians and scientific staff provide a complete suite of PVT fluid studies and field sampling using first-stage separator gas/liquid samples or subsurface reservoir fluid samples. All reservoir fluid studies include the following:


A2.1.1.1    Fluid Sample Acquisition

  • A. ERC laboratory and production testing technicians are fully trained to catch all first-stage separator samples required for PVT Fluid Study.
  • B. Surface Samples from first-stage separator
  • C. Subsurface Samples
    • C.1. Acquired sample transferred to transport cylinders on site.


A2.1.1.2    Fluid Sample Preparation

    A.    Sample Conditioning

    B.    Sample Validation

 C. Compositional analyses of gas and liquid through via chromatography


A2.1.1.3    Lab PVT Study

  • A. Mercury-Free PVT Laboratory
  • B. Physical recombination of surface samples to one of the following conditions:
    • B.1. The produced first-stage separator gas-oil ratio (GOR)
    • B.2. A specified saturation pressure and temperature (if applicable)
    • B.3. Flash Study of the first-stage separator liquid to ambient lab conditions
  • C. Saturation pressure (DP or BP)
    • C.1. Determination at reservoir temperature via Constant Composition Expansion (CCE).


   A.    Oil viscosity

Black or Volatile Oils

Measured at reservoir temperature and pressures ranging from zero to maximum reservoir pressure.

Flash Study of the reservoir liquid through separator conditions to ambient lab conditions

Black and Volatile Oils

Tests to model production below the saturation pressure as pressure depletes via

 Black Oil Study - Differential Liberation (DL)

 Volatile Oil Study - Constant Volume Depletion (CVD) test

 Retrograde Gas Study - Constant Volume Depletion (CVD) test

Swell Testing

injected gas or solvent dissolving in the reservoir fluid swells it and obtained fluid mixture is subjected to CCE test: to determine the saturation pressure, to determine relative volume, to determine the shrinkage factor and density and viscosity of single-phase fluid


A2.1.1.4    Equation-of-State (EOS) Fluid Modeling

  • A. Mathematically generates all PVT lab study results using the reservoir composition, pressure and temperature as input.


A2.1.1.5    Hydrocarbon laboratory Analysis for the petroleum industry.

  • A. Gas Analysis through gas chromatography
  • B. Natural Gas (LPG / LNG) Analysis 
  • C. Hydrocarbon Liquid Analysis
  • D. Flash Study or Emission Study:
    • D.1. Separator HC Liquid Flash through well site separation stage(s) to ambient lab conditions to determine:
      • D.1.1.   Gas-Oil Ratio
      • D.1.2.   Separator Volume Factor
      • D.1.3.   Shrinkage Recovery Factor
      • D.1.4.   C7+ and C11+ Analysis of Evolved Gas
      • D.1.5.   C7+ and C11+ Analysis of Stock Tank Liquid
      • D.1.6.   Reid Vapour Pressure (Stock Tank Liquid)
      • D.1.7.   API Specific Gravity (Stock Tank Liquid)


A2.1.1.6    Miscellaneous:

  • A. Brine Water Analysis 
  • B. Glycol Analysis (Water)
  • C. Thermal Water Analysis (e.g. de-oiled produced water, boiler feed water, LP separator flash blowdown, Once Through Steam Generators [OTSG] boiler blowdown)
  • D. Crude Oil Assay Analysis
    • D.1. Cloud and Pour Point measurements
    • D.2. Water Cut measurement
    • D.3. SARA analysis
    • D.4. Reid Vapor Pressure test 
    • D.5.   Flash Point test
    • D.6.   Sulphur in Crude content measurement
    • D.7.   Density and API measurements
    • D.8.   Oil viscosity at different temperatures
    • D.9.   Water content in crude
    • D.10. Salt in crude content measurement
    • D.11. Sand cut measurement
    • D.12. TAN and TBN
    • D.13.   Fractional Distillation test
    • D.14. Sulphur Content Analyses
    • D.15.   H2S Content 
    • D.16.   Hydrocarbon & Water Dew Point Measurements 
    • D.17.   Automated ASTM D-86 Distillations
    • D.18.   Benzene Distillation & Analysis
    • D.19. Microbiology and Corrosion Testing (SRB, ARB)
  • E. 


A2.1.1.6    Refined Product Analysis: 

  • A. Diesel Fuel Analysis per ASTM D
  • B. Gasoline Analysis
  • C. Bunker Fuel Analysis per ISO 8217
  • D. LPG Testing
  • E. Research and Motor Octane of gasoline
  • F. Anti-knocking index
  • G. Cetane Number
  • H. Wear Metal & Friction Tests