Services — Checking the consistency of PVT-properties …

Checking the consistency of PVT-properties in a laboratory report (CC)

Course Level:
Intermediate, basic knowledge about lab experiments required.
Course duration:
2 days, in-house with companies
Designed For:
Reservoir and facility engineers who use PVT properties for engineering studies, reservoir simulation, facility design and fluid modeling via Equation of State.
You Will Learn How To:
  • Check whether the best sample has been chosen for the lab experiments.
  • Assess whether the composition has been determined properly.
  • In which sequence the experiments are carried out in the laboratory.
  • Determine what is measured and what is calculated in the report.
  • Assess the accuracy of the data, sources of experimental errors.
  • Detecting outliers in the data sets.
  • Cross checking Constant Composition Expansion and Differential Liberation Experiment.
  • Cross checking Constant Composition Expansion and Constant Volume Depletion.
About The Course:
In this course we take a closer look at laboratory data which is often taken at face value. Since good laboratory work starts with good samples, we firstly identify a method to select the most representative sample for further analysis. Next, we examine the complete experimental procedure of a PVT experiment, which mimics the physical changes the reservoir fluid (black oil or gas-condensate) undergoes on its way from the formation to the surface facilities. The detailed discussion of experimental procedures and their underlying physical principles form the basis for a vigorous quality control and cross-check of external reports. The instructor provides examples, but participants are highly encouraged to bring their own PVT-reports for discussion.
Course Content:
  • Types of reservoir fluids.
  • Importance of fluid sampling, check of compositions.
  • Sample transportation.
  • Selection of the most representative sample.
  • Laboratory processes emulating the fluid behavior in the reservoir.
  • Black oil: Constant Composition Expansion.
  • Black oil: Differential Liberation Experiment.
  • Black oil: cross check of experiments.
  • Black oil: influence of solution gas on the fluid properties.
  • Gas-condensate: Constant Composition Expansion.
  • Gas-condensate: Constant Volume Depletion.
  • Gas-condensate: cross check of experiments.