PVTsim Nova 5.0 to 6.0

UPDATES AND BUG FIXES

FLUID DATA

  • AUTO IMPORT OF PVT DATA FROM EXCEL SHEET
    • Automated import of PVT reports in Calsep Excel format. A PVTsim installation comes with sample Calsep Excel PVT reports.
  • PVT DATA IN PRODML XML FORMAT
    • Automated import of fluid compositions and PVT data in PRODML XML version 2.1 format.
    • Import of multiple PRODML XML files in one operation.
  • ASPHALTENE AND WAX DATA
    • New dedicated tab on Fluid View for Asphaltene  and Wax data.

FLUID MANAGEMENT

  • FLUID EXPLORER
    • Enhanced sorting features.
  • IMPORT EXTERNAL EOS MODELS
    • EoS models in the following formats can be imported: Eclipse Comp, PVTi, tNavigator Comp, Comptrack, CHC, Prosper EoS, GEM and Winprop.

FLUID HANDLING

  • USER CONTROLLED OBM CLEANING
    • New OBM cleaning option that allows the user to define the contaminated carbon number range. The impact on simulated properties of the cleaned fluid is displayed.

PVT SIMULATION & REGRESSION

  • DRY GAS CME (pVTZ)
    • CME data can be entered and regressed to for a gas with no saturation point at the experimental temperature.
  • AUTO EOS
    • The requirement of at least two classical PVT experiments no longer exists if importance assigned to the estimated mixture critical point.
  • COMMON EOS w/ PLUS REGRESSION
    • Bug corrected, which in rare cases resulted in a too low molecular weight of the heaviest pseudo-component.
  • MMP
    • Tie-line plots added.
  • CHARACTERIZED REGRESSION
    • Option to prevent negative kij’s.
  • TWO ALMOST IDENTICAL PRESSURE STAGES
    • Two differential liberation pressure stages very close to each other no longer gives an error.

RESERVOIR

  • COMPOSITION ESTIMATION MODULE
    • New module that uses the theory of chemical reaction equilibria to estimate how the composition of a reservoir fluid varies with temperature and pressure.
  • COMPOSITIONAL GRADING
    • Depth gradient option extended to possibly account for the increased compositional grading caused by viscosity effects (SPE 205887-MS).
  • FAST SLIMTUBE
    • Changed from molar-based approach to volumetric approach.

FLOW ASSURANCE

  • ASPHALTENE SCREENING TOOL
    • Outputs report that compiles De Boer plots, SARA based methods and EoS simulations for evaluating risk of asphaltene problems.
  • ASPHALTENE PHASE ENVELOPE
    • Allowed for gas condensate fluids.
  • SARA DATA
    • Can be stored in fluid database.
  • WAX DATA
    • PVTsim Nova database extended to hold wax appearance point, amount of wax in STO and amount of wax precipitation with decreasing temperature (Wax Precipitation Curve – WPC).
  • WAX TUNING
    • Wax tuning options extended to also cover data for wax precipitation with decreasing temperature (WPC).
  • HYDRATE PT CURVE
    • The Hydrate PT curve option has been updated to handle a sudden shift in hydrate temperature from the dew to bubble point side for a narrow boiling mixture.
  • EMULSION VISCOSITIES
    • Correction of oil-in-water viscosity, which was previously too low.
  • WAX VISCOSITY CALCULATIONS
    • Bug corrected to ensure that plots are always displayed correctly.

FLASH & PROCESS

  • GAS QUALITY
    • New option for calculating the NGL yield and gross heating value using either the GPA or the ISO standard.
  • MULTI FLASH WITH SOLIDS
    • New PT multi flash option that handles pure inorganic and aqueous solid phases (e.g. CO2 and ice).
  • T-BETA AND P-BETA FLASH OPTIONS
    • Enhanced robustness of T-beta and P-beta flash options for mixtures with aqueous components.
  • PT AQUEOUS FLASH
    • The Aqueous phase properties can be calculated using the Water Package and the PC-SAFT as an alternative to the selected EoS.
  • 3-PHASE SEPARATOR
    • Logic changes to have water follow the oil until the last separation stage.
  • OPEN STRUCTURE FLASH
    • Updated to always output component fugacities for all phases.
  • COPY PVT DATA
    • Input checks have been relaxed for the option to copy PVT data between fluids.

MODELS & MODEL PARAMETERS

  • MERCURY
    • Hg properties and binary interaction parameters optimized to match experimental data.
  • GERG-2008
    • Enabled in PT-aqueous flash, PT multi-phase flash, 3-phase separator in Unit Operation menu, phase envelope with water, phase mapping, critical point and in Saphir, Prosper and MBAL interfaces.
  • THERMAL CONDUCTIVITY OF AQUEOUS PHASE
    • Hydrate inhibitors taken into account when calculating the thermal conductivity of an aqueous phase.       
  • ASPHALTENE PARAMETERS
    • Cubic EoS asphaltene parameters updated (SPE 203491-MS)
  • BINARY INTERACTION PARAMETERS FOR GLYCOLS – C7+
    • Updated kij’s for pairs of a glycol (MEG, DEG or TEG) and C7+.
  • HELIUM
    • Ideal gas Cp coefficients for He have been corrected.
  • CARBON MONOXIDE
    • CO added to pure component database.

INTERFACES

  • NEW INTERFACE MODULES
    • OLGA batch option.
    • Intersect Compositional.
    • Turbulent Flux virtual meters.
    • Open Porous Media (OPM) reservoir simulator.
  • ECLIPSE BLACK OIL
    • Refined monotonicity check.
  • ECLIPSE COMP
    • Extended with option to account for the increased compositional grading caused by viscosity effects.
  • GEM
    • Updated to support T-dependent volume shift parameters.
  • HYSYS
    • C6 now appears as pseudo and et-benzene as e-Benzene in Hysys interface file.
  • IMEX
    • Corrected to ensure that undersaturated Bg-values and gas viscosities deviate from saturated values.
  • INTERSECT BLACK OIL
    • Unit specification added to interface file
  • INTERSECT COMP
    • Extended with option to account for the increased compositional grading caused by viscosity effects.
  • NEXUS COMP
    • Extended with option to account for the increased compositional grading caused by viscosity effects.
  • OLGA
    • Artificial gas phase enthalpies forced to increase with increasing temperature.
    • Bug corrected that might cause slightly inaccurate gas enthalpies for CO2-rich reservoir fluids.
  • PIPESIM
    • Incorrect values of H, S and Cp at standard conditions corrected.
  • PROSPER EOS
    • Updated to support Prosper EoS version 16 in addition to version 7.
  • tNAVIGATOR COMP
    • Extended with option to account for the increased compositional grading caused by viscosity effects.

OTHER

  • LICENSE CHECK
    • FLEXlm license check upgraded to version 11.17.
  • HIGH RESOLUTION MONITORS
    • Some menus updated for better user experience on high resolution monitors.
  • Z-FACTOR VERIFICATION REPORT
    • Updated to also cover GERG-2008.