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PVTsim 18
PVTsim is a versatile PVT simulation program developed for reservoir engineers, flow assurance specialists, PVT lab engineers and process engineers.
The PVT simulation package PVTsim is being used by leading oil producing and operating companies throughout the world.
Based on an extensive data material collected over a period of more than 20 years, PVTsim carries the information from experimental PVT studies into simulation software in a consistent manner and without loosing valuable information on the way.
PVTsim 18 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 18 is petroleum phase behavior at the tip of your fingers.
PVT & Regression
MMP algorithm enhanced (especially for CO2 injection gas). More informative error text message in case of failure.
Enhanced numerical robustness of option for regressing to MMP.
Max. number of cells in Slimtube option increased to 2000. Output frequency introduced for time steps and cell numbers.
Enhanced numerical stability of saturation point option.
Regression option modified to run on Vista.
An extra datapoint was erroneously added when plotting Vrel for CME after regression.
Bug corrected in Regression option for characterized fluids. Lumping specification not always carried properly through to regression.
Plus fluid regression option modified to allow viscosity model parameters as the only tuning parameters.
Improved numerical robustness when tuning to swelling data.
Plus fluid regression erroneously changed the Peneloux parameter of CO2.
Drive type (Forward or Reverse) specification not visible for set number 5 of Multi Contact Experiment.
Saturation point option did not work for more than 1 saturation point.
Gas/oil mix ratio for Reverse Multi Contact Experiment changed to be per amount of initial oil and not amount of oil at actual stage.
Flash & Unit Operations
Improved T-dependence of H2S dissociation constant for temperatures above 70 °C.
Numerical robustness of water phase envelope algorithm option enhanced for systems with two hydrocarbon liquid phases.
Energy properties and density derivates of salt water were incorrect when calculated using Property Generator and Water Package.
Unit Operations options by mistake returned C10+ molecular weights of zero.
Flow Assurance
Hydrate H was not counted when making average energy properties.
Error corrected in Hydrate Minimum Inhibitor Option. The error appeared for mixtures with salts when more than one set of pressure-temperature values specified.
DepoWax extended with Mukherjee&Brill pressure drop model.
Bug corrected in DepoWax to enable simulation of pipes with identical inlet and ambient temperatures.
DepoWax extended to always calculate film thickness, not only in sections with wax depositing.
Hinner correlations updated in DepoWax to not include length dependent terms (these are only relevant for very short pipes with significant boundary effects).
Error corrected in DepoWax for T-derivative of the density. Marginal influence on T-profile
Unit for dP/dL corrected in DepoWax
Errors corrected in DepoWax for average viscosity of oil and water and for surface tension of gas-liquid (when water present).
Corrected made in DepoWax in calculation of heat transfer using Petukov-ESDU correlation.
Error corrected in DepoWax causing same simulation results after all time steps.
Error in thickness of laminar film corrected in DepoWax. Caused too much wax deposition.
Time step control implemented in DepoWax causing wax build-up to be almost independent of time step length.
Default Hinner correlation in DepoWax changed from Petukov-ESDU to Sieder-Tate, as the former is discontinuous in Reynold’s number.
PC-SAFT available as asphaltene model for JIP sponsors as alternative to SRK/PR.
Open Structure
Open Structure Flash extended with option for calculating water properties from water package.
Error corrected in Open Structure Flash in option for specifying phase type of single-phase fluid.