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    PVTSIM Nova

PVTsim Nova is a versatile PVT simulation program developed by Calsep for reservoir engineers, flow assurance specialists, PVT lab engineers and process engineers. PVTsim Nova is an upgrade of the PVT simulation package PVTsim.

PVTsim Nova complies to the standards of a modern .NET application ensuring full support from the Microsoft development platform.

PVTsim has been used by leading oil producing and operating companies throughout the world.

Based on an extensive data material collected over a period of more than 30 years, PVTsim Nova carries the information from experimental PVT studies into simulation software in a consistent manner and without losing valuable information on the way.

PVTsim Nova allows reservoir engineers, flow assurance specialists and process engineers to combine reliable fluid characterization procedures with robust and efficient regression algorithms to match fluid properties and experimental data. The fluid parameters may be exported to produce high quality input data for reservoir, pipeline and process simulators.

PVTsim Nova is petroleum phase behavior at the tip of your fingers.

NEW FEATURES AND MODULES IN PVTsim Nova 4.0

NOVA APPS

  • AUTO QC
    • Automated quality check and correction of fluid compositions.
  • AUTO EOS
    • Automated EoS model development.
  • SEPARATION
    • Flowsheeting option.

MODEL AND MODEL PARAMETERS

  • PR-CPA
    • Extension of Cubic Plus Association (CPA) model to be applicable with the Peng-Robinson EoS.
  • WAX DEPOSITION
    • Wax deposition simulator DepoWax extended to support the Matzain wax deposition model as an alternative to the RRR model.
  • CaBr2
    • Revised interaction parameters for H2O-CaBr2 and CaBr2-MEG to improve hydrate predictions at high pressure.
  • PC-SAFT CHARACTERIZATION
    • Improved PC-SAFT characterization (SPE-187170-MS).
  • HEAVY OILS
    • Improved Heavy Oil Characterization.

PC-SAFT

  • REGRESSION
    • Tuning to PVT data using PC-SAFT EoS.
  • BLACK OIL INTERFACES
    • PC-SAFT model available in the interface options to Eclipse Black Oil, VIP Black Oil, Nexus Black Oil. and IMEX.

FLASH

  • MULTI FLASH
    • The number of phases handled by Multi Flash option increased from 4 to 5.

PVT SIMULATION AND REGRESSION

  • CVD FOR OILS
    • A CVD experiment for oil mixtures can be simulated and experimental data used in regression.

PHASE MAPPING

  • PHASE MAPPING PLOT TOOL
    • Option to plot type and number of phases (max. 5) in a user defined P & T range.

ASPHALTENES

  • ASPHALTENE DATA
    • Data for asphaltene onset pressures and for Asp in STO can be stored in PVTsim Nova database.
    • Asphaltene simulation results can be compared with experimental data using a new Compare with Asphaltene Data option.

HYDRATE

  • PH FLASH
    • Hydrate PH flash option introduced, which enables simulation of the heat to be added to melt hydrates.

SCALE

  • PT GRID OPTION
    • Scale formation can be simulated for an entire PT- grid.
    • 2D and 3D plot options showing how scale precipitation develops with P and T.

WATER ANALYSIS

  • WATER ANALYSIS CONVERSION
    • Water Analysis Conversion option updated to automatically store converted fluid composition in PVTsim Nova database.

INTERFACES

  • PROSPER EOS
    • New option for import of Prosper EoS files.
  • MULTI PHASE METERS
    • Multi Phase Meter interface option updated to support Roxar units.

 

UPDATES AND BUG FIXES

 

FLUID HANDLING

  • MIX
    • Mix option updated to give correct CSP viscosities for mixtures of viscosity tuned fluids.
  • RECOMBINE
    • Lumping kept when two common EoS fluids are recombined.
  • DELUMP
    • Inconsistency between CPA and SRK parameters corrected.
  • CHARACTERIZED REGRESSION
    • Characterized regression updated to support tuning on Vc not only for viscosity experiments, but also for viscosity data points.
  • CLEAN FOR MUD
    • Clean for mud “STO Oil + Gas” option updated to also work for extended GC fluids.
  • QC
    • Acceptance criterion for STO oil density changed ±0.02 g/cm3.

MODELS AND MODEL PARAMETERS

  • MEG-TEG
    • MEG-TEG interaction parameters updated to avoid phase split in systems with both components present.

PVT & RESERVOIR

  • DEPTH GRADIENT
    • Bo and Bg included in output and plot.
  • VISCOSITY DATA FOR GAS CONDENSATES
    • Viscosity experiments for gas condensates can be simulated and used in regression.
  • VISCOSITY EXPERIMENT
    • Viscosity experiment can be simulated as a CVD experiment as an alternative to a differential liberation experiment.
  •  SLIMTUBE
    • Updated to delete temporary output files.
    • Phase Viscosities option corrected to give the correct relative mobility of gas and oil.
    • Phase Viscosities option made the default choice.
    • Default number of cells and time steps modified to give a better match of the recovery at pressures below MMP.
  • DEPTH GRADIENT
    • Bug corrected to give the right CSP viscosities in depth gradient option.  
  • DIFFERENTIAL LIBERATION EXPERIMENT
    • Bleed made default for the pressure stage to atmospheric pressure.

OBM CLEANING

  • C7+ ISOMERS
    • C7+ isomers allowed in contaminated fluid compositions when estimating weight% contaminate of STO oil.

FLASH & PROCESS

  • H2S
    • Updated to work when H2S amount input as weight% or mg/l of Total Mixture.
    • Column header for H2S partition coefficient corrected from Aq/Liq to Liq/Aq.

ASPHALTENES

  • ASPHALTENE PHASE ENVELOPE
    • Minimum temperature for Full Asphaltene Phase Envelope can be defined by user.
  • ASPHALTENE TUNING
    • Updated to give same tuning results before and after Asp/non-Asp split.
  • TAR MATS
    • Asphaltene weight% is included in output from Asphaltene Tar Mats option.

FLOW ASSURANCE

  • WAX DEPOSITION SIMULATOR DEPOWAX
    • Simulation time corrected for output in the unit of Day(s).
  •  SCALE
    • Output concentrations of CO2 and H2S corrected.
    • Molecular weight of acetic acid corrected.
    • Corrections made of gas solubilites at high pressure and pH far away from scale precipitation.

WATER ANALYSIS

  • ION CONCENTRATIONS
    • Unit for ion concentrations changed from mg/l H2O to mg/l salt water.

INTERFACES

  • ECLIPSE COMPOSITIONAL
    • Bug corrected to solve Eclipse Comp Import issue.
    • COMPVD compositions output with more digits to ensure mole fractions add up to 1.0.
  • OLGA COMPOSITIONAL TRACKING
    • Save Fluid option modified to save characterized fluid instead of plus fluid.
  • ECLIPSE BLACK OIL  
    • Rso output in MScf/bbl with PVCO format.
    • Rv’s output for multi stage separators corrected for cases with temperature increase from one separator to the next one.
    • Bug corrected in API versus depth option.
    • Reference pressure and reference depth output in Rs/Rv and API vs. Depth tables.
  •  OLGA
    • Updates to always have vapor enthalpies increase with temperature at a given pressure.

LICENSE SYSTEM

  • UPDATES
    • Correct message given when all PVTsim licenses are occupied.
    • License Manager (LMTOOLS) shifted to newer version.

DATABASE

  • DATABASES OF OLDER FORMAT
    • Option to open PVTsim Databases of versions 19-21 reintroduced.
  • NEW COMPONENT
    • 2,2,4 trimethyl pentane added to pure component database.