About Pressure Volume Temperature (PVT) testing and analysis

Accurate and reliable phase behavior and volumetric data are essential elements for proper management of petroleum reservoirs. The information is required to evaluate reserves, to develop the optimum recovery plan, and to determine the quality and quantity of produced fluids. Most reservoirs are produced by depletion in which the reservoir pressure declines as fluids are recovered with the temperature staying practically constant. The main variable that influences the behavior of fluids, under reservoir conditions during depletion, is the reservoir pressure. PVT analysis simulates recovery conditions by varying the fluid pressure.

What is PVT analysis used for?

Evaluation of production and reserves for new reservoirs
Evaluation of production and reserves for mature reservoirs
Reservoir performance comparison studies
Secondary and tertiary reservoir recovery schemes
Production economics and informed downstream planning

petroforma's range of reservoir testing services

petroforma’s reservoir fluids laboratory offers a comprehensive list of PVT and other analytical services that generate the necessary data for clients to understand and monitor the hydrocarbon phase behavior and fluid properties of their reservoirs.

Black Oil PVT
Gas Condensate PVT
Volatile Oil PVT
Water
Stock Tank Crude Oil

Including the following tests

• Physical Recombination of Separator Liquid and Gas
• Transfer of fluid samples
• Sample restoration
• Single-stage separator tests
• Multi-stage separator tests
• Constant Composition Expansion
• Constant Mass Expansion
• Differential Liberation
• Constant Volume Depletion
  • Liquid Analysis - Precise quantification of pressurized oils, condensates, and stock tank oils up to carbon 44+ by use of an internal standard.
  • Gas Analysis - Chromatographic analysis of hydrocarbon gas up to carbon 10+, or carbon 15+, including carbon dioxide, nitrogen, oxygen, and hydrogen based on recognized methodologies (GPA, IP, ASTM).
  • BTEX - Benzene, Toluene, Ethyl Benzene, and Xylene aromatic measurements in both gas and liquid samples acquired through chromatography procedures.
  • Contamination Analysis - High-resolution capillary chromatography to evaluate oil-based mud contamination of crude oil.
• Water Analysis
  • Metals, major cation and anion analysis by ICP and IC
  • pH
  • Total Dissolved Solids
  • Alkalinity
  • Refractive Index
  • Resistivity
• Stock Tank Oil
  • API
  • Density
  • Viscosity
  • Water Content by Karl Fischer
  • Basic Sediment & Water
  • Sulphur content
• Additional tests
  • Flash
  • Pour point
  • Cloud

 

Liquid and gas sample storage

petroforma’s facility has thousands of feet of Class 1, Zone II High Hazard Storage Area suitable for short and long term storage of liquid and gas samples, as well as cores.

Cylinder use and rental

petroforma keeps an inventory of mercury-free sample cylinders for all our customer needs:

• 700 cc Stainless Steel, piston displacement, 690 bar MWP.
• 20 L Aluminum, flow through double ended, 200 bar MWP.
• 500 cc Stainless Steel, flow through double ended, 124 bar MWP.
• 3875cc Stainless Steel.