Carbone is a highly interactive, lab to EOS PVT module. Matched to laboratory data, the tuned PVT model can be exported for use in black oil or compositional simulations in multiple formats including Eclipse™. Connection is seamless between KAPPA-Workstation modules. Carbone is a KAPPA software powered by IFPEN as part of our ongoing technical partnership.



Carbone Workflow

  • Fluid\nDefinition
  • Model\nChoice
  • Lab Data Input and Workflows
  • Lumping and Regression

General data input

Before creating a PVT study, the reference reservoir and surface temperature and pressure conditions are entered.

Composition

Compositional analyses from a standard PVT report are entered.

A comprehensive parameter database of pure fluids are available.

Pseudo-Components

Pseudo-components are used to reduce the number of components in fluid definition using a lumping process.

Here, a defined component may be grouped with components based on user-defined criteria.

Equilibrium and Density

Peng-Robinson and Soave-Redlick-Kwong models are available.

An option for volume translation is also available for density correction.

Viscosity

Lohrenz-Bray-Clark (LBC) and Modified LBC models are available for viscosity computation.

Phase Envelope

The fluid is represented by a phase envelope in a pressure and temperature space.

The crincondentherm, crincondenbar and critical point are also displayed in the graph.

CCD

Constant Composition Depletion (CCD) is an experiment necessary to determine saturation pressure, undersaturated oil density, and 2-phase volumetric behavior.

A CCD simulation is performed to verify if this is in agreement with the lab data.

An automatically generated plot will show the comparison between the lab data and simulation for comparison purposes.

DL

Differential Liberation (DL) is an experiment designed to represent any depletion process within the reservoir, necessary to determine specific gravities and relative volume.

A DL simulation is performed to verify if this is in agreement with the lab data.

An automatically generated plot will show the comparison between the lab data and simulation for comparison purposes.

CVD

Constant Volume Depletion (CVD) is an experiment designed to provide volumetric and compositional data for condensate and volatile oils.

A CVD simulation is performed to verify if this is in agreement with the lab data.

An automatically generated plot will show the comparison between the lab data and simulation for comparison purposes.

Separation

Flash Calculations can be performed at any stage (pressure and temperature) to compute vapour fractions, phase compositions, phase envelope for separation gas and liquid, and to verify if a phase split will occur at specific conditions.

Extended flash calculation can also be made as in the case of superheated vapour and subcooled liquid.

Lumping

Manual option is available for lumping components based on a similarity of a component characteristics.

Matching EOS

Carbone incorporates a built-in regression algorithm to match the laboratory data (saturation pressure, oil density at saturation pressure, volumetric functions and viscosity).

The user has control over which parameters and components should be used during regression.

PVT Export

Once a satisfactory match has been obtained between the simulation and laboratory data, a PVT model can be generated and exported for use in Black-oil or compositional dynamic simulation.

These can be used directly in the Pumaflow workflow or exported for use in any of the KAPPA software modules.

Additional Processes

An interactive workflow area is present whereby additional processes (Mixer, Compositional gradient, Split, etc) can be created by a simple left-click of the desired fluid.

The user also has access to several options to help make the workflow easier to manage such as clone and running multiple processes concurrently.