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Oil & Gas Training
and Competency Development
Competency Management system SLB NEXT

ECLIPSE Compositional Simulation - RILS

This is a Remote Instructor Led Series (RILS) training. The remote classroom delivery is a modality that takes advantage of the instructor led training content, while allowing the same content to be delivered remotely.
All training sessions will be delivered online with no face-to-face classroom attendance.

Compositional simulation is useful when an equation of state is required to describe reservoir fluid phase behavior. Some applications include the modeling of a miscible flood scheme and compositional changes associated with depth. Similarly, a compositional model is the right choice to accurately capture the complex physics such as condensate dropout in the reservoir. 

This course acquaints you with the construction of simulation models using the features of the ECLIPSE Compositional option. The course shows you how to set up and run a compositional simulation model. The course contains several exercises, each on a specific topic. The exercises build to a small study in which you can apply what you learned.

The course discusses the PVT properties of hydrocarbon fluids, how to analyze a PVT hydrocarbon fluid, how to prepare the PVT for compositional simulations, the differences between black-oil and compositional simulation, and how to use ECLIPSE Compositional.

The course will be delivered in four (4) sessions lasting ~ four (4) Hours each. An intensive agenda also implies a homework after each session. Hence full-time commitment is expected from participants.

Each student will need the following to attend:

  1. Windows-based PC*
  2. USB Headset
  3. Internet Access capable for 720HD video-streaming
  4. Second monitor or tablet (highly recommended)
  5. Webcam (highly recommended)

*Hands-on exercises will be performed using locally installed Petrel and ECLIPSE software; hence client machine must satisfy min. requirements. Alternatively, practical sessions can be accessed through DELFI Cloud Environment (subject to availability).


Introduction to PVT

  • Some basic PVT Concepts
  • Reservoir fluid types and behavior
  • Introduction to PVT Package
  • Introduction to Compositional simulation
  • Components and compositions
  • Black oil and compositional fluid models.

Fluid Modeling workflow

  • Samples representativit and quality checks
  • Laboratory tests and experiments
  • Splitting and grouping

Compositional EoS and flash

  • Compositional Equations of State (EoS)
  • Compositional flash
  • The regression workflow



Miscibility Modeling

  • Ternary diagrams
  • Miscible and immiscible fluids
  • Composition variation with depth
  • The slim tube experiment
  • The slim tube simulation exercise


From ECLIPSE Blackoil to ECLIPSE Compositional

  • Black oil and compositional models
  • The solution methods
  • The different sections in ECLIPSE
  • Relative Permeability interpolations
  • The Oil Full field Model Exercise

Learning activity mix

Reservoir engineers familiar with reservoir simulation who are interested in learning reservoir compositional simulation using ECLIPSE Compositional simulator

  • Understand blackoil and compositional model definitions, equations, assumptions, approximations, and unknowns
  • Learn pressure-volume-temperature (PVT) practices and phase behavior
  • Understand structure and keywords
  • Learn about miscible, immiscible, and water-alternating-gas (WAG) displacement of an oil and gas injection into condensates
  • Use PVT pressure-volume-temperature analysis software and ECLIPSE Compositional to model slim tube displacements
  • Learn about first contact miscibility and multi contact miscibility.
  • Understand condensing gas drive and vaporizing gas drive
  • Learn about solution scheme
  • Perform flash calculation
  • Understand equations of state (EOS)
  • Perform characterization and component lumping
  • Learn about surface tension effects
  • Learn about near-critical oil and gas relative permeability

Pressure-Volume-Temperature fluid properties or knowledge of Equation of State (EOS) modeling; reservoir engineering background or familiarity with the ECLIPSE Blackoil simulator

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