Technical features
 Download
 News & updates
 Support
 Contact Info

Technical features of the PVTmaster software are summarized below:



General Features of PVTmaster
  • Reservoir Fluid Characterization
  • Plotting Varied Curves
  • Splitting and Lumping of HC Fractions
  • Grouping Components
  • Simulation of Laboratory Analysis
  • EOS Parameter Regression
  • Tuning Of Viscosity Model
  • Asphaltene Precipitation Modeling
  • Unit Convertor Module
  
 
Reservoir Fluid Characterization
Component Library
  1.  Common pure components
  2. SCN fractions
  3. Capable to add any user-defined component
 
Step by Step Definition
  1. Select EOS and Viscosity Model
  2. Add components from the table
  3. Define plus fraction
  4. Estimate BIPs
                 - A data base library of binary interaction parameters for each of the equations of state
                 - Ability to adjust the binary interaction parameters before running the model
                 - The BIP values can be tuned by available experimental data
  1. Enter mole fractions
 
Using Volume Shift  Parameters as Temperature dependent parameters(Optional)
  
 
Plotting Varied Curves
 
Phase Envelope
  •  Plotting The Phase Envelope of a mixture
  • You can zoom in, zoom out, print, export,… with the complete toolbar of this module
  • you can add a quality line with a specific vapor mole fraction
 
Compare Phase Envelopes
  •  You can compare phase envelopes of two different mixtures
  • You  can compare phase envelopes of a mixtures before and after tuning, splitting or grouping 


Finger Print
  • Plotting finger print of a mixture
 
 
Splitting-Lumping of Plus Fractions
  • An innovative distribution-based approach
  1. Generalized Distribution
  2. Gamma Distribution
  3.  Exponential Distribution
  • Lumping Options
  1. Carbon Number Range (Kay’s Rule)
  2. Carbon Number Range (Distribution)
  3. Gaussian Quadrature
  • Comparing Phase Envelopes and Finger Prints before and after splitting
  • Save Results as a new Mixture
  1. Saving new Mixture as a new One or Overwriting the old
  • 9 various splitting-lumping algorithms
 
 
Grouping Components
  •  Three Grouping Algorithms
  1. Molar Average
  2. Weight Average
  3. Mixing Rule
  • Auto Select Group Option
  1. If you don’t have any idea about how to group components you can use this option
  • Comparing Phase Envelopes and Finger Prints before and after Grouping
  • Save new mixture as a new One or Overwrite the old
 

 PVT Tests
 
Single-step tests:
  •      Bubble point
  •      Dew point (upper or lower)
  •      2-phase flash
  •      Critical point
Multi-step tests:
  •     Constant Composition Flash Expansion (for oil and gas samples)
  •     Differential Liberation
  •     Constant Volume Depletion (CVD)
  •     Separator Test
  •     Swelling Test ( By GOR and By Mole Fraction )
  •     Composition With Depth
PVTmaster gives you so many practical outputs in each test which you can use them as tuning parameters
  
 
Equations of State
  •  Soave-Redlich-Kwong Equation of State (SRK) 
  • Peng-Robinson Equation of State (PR)
  • Volume Shift Correction (3-Parameter EOS)
  • Other EOS’s can be easily added to the model
 

Tuning of EOS
Selection of different parameters
  • Tc
  • Pc
  • Acentric Factor
  • Volume Shift
  • EOS Parameters
  • BIP Parameters
 
  • Grouping of parameters
  • Separate tuning of viscosity model
  • Selection of upper and lower limits of parameters
  • Selection of weight factors of tests
  • Reliable search-based optimization algorithm
  • Use Parallel Processing Method
  • Selection of number of iterations
  • Comparing Phase Envelopes before and after tuning
  • Saving results as a new mixture beside the original one
 
 
Tuning of Viscosity model
  •  LBC (1964)
  • Fong-Nghiem (1980)
  • Pedersen (1984)
  • Pedersen Fredenslund (1987)
  • Asberg  Petersen (1991)
 

Phase Envelope Construction Algorithm
  •  Second order flash calculation algorithms require a good initial guess to converge
  • Dynamic point selection on phase envelope (to obtain a rapid envelope construction algorithm)
  • Reliable results in near-critical and retrograde area
  • Accurate computation of constant quality lines
  • Automatic detection of invalid phase envelopes
  
 
Data Exporting
  • Eclipse Compositional Simulator
  • Eclipse Black Oil (E100) for Oil Reservoirs
  • Eclipse Black Oil (E100) for Gas Reservoirs
  • Eclipse Equilibration
  • CMG Compositional Model (GEM)
  • CMG Black Oil Model (IMEX)
  • VFP Simulator (MAPSA)
  • Microsoft Excel
 

Model Advantages
  • Reliable Phase Stability Analysis
  • Robust Flash Calculation
  • Fast Phase Envelope Construction Algorithm
  • Precise Saturation Point Estimation without initial guess
  • Efficient Optimization Algorithm
  • Trustworthy Near Critical Computation
  • Rapid and robust envelope construction algorithm
  • Using 3-parameter equations of state
  • 3-phase flash (solid-oil-gas)
  • Tunable model with experimental results
  • Simulation of PVT common tests (CCE-DL-CVD-Separator-Swelling-Composition With Depth)
  • plotting constant quality lines
  • Performing the VLE calculations in near critical zone without using numerical curve fitting tricks
 

Asphaltene Precipitation Prediction Module
  •  Polymer-Solution Models
  1. Flory Huggins
  2. Modified Flory Huggins
  3. Scott Magat 
  4. 4-Parameter Scott Magat
  • Solid (EOS) Model
  
 
Unit Convertor Module
PVTmaster has a very useful Module (PVTmaster unit convertor) in which you can convert the value of a physical property from a unit system to the other unit systems
 
 
General GUI Specifications
  • C# with object oriented design
  • .NET Framework 4
  • Compatible with Windows XP, Windows Vista and Windows 7 (tested on both 32 bit and 64 bit versions)
  • Multi-thread programming
  • User-friendly wizard-base GUI
  • Extendable model for other purposes 
  1. VFP Modeling
  2. compositional reservoir simulator
  3. miscible flooding studies
  4. 3-phase equilibrium
  • …

keywords: #PVTmaster, #modelling, #simulation, #oil, #gas, #PVT, #Software, #Phase behavior, #fluid properties, #Equation-of-State (EOS), #asphaltene modeling, #PVT matching