What's new in the 2014.01 version?
It is always a challenging question to answer when a technical software releases a new version since there always is a long list of what to improve around, all the way from glimpse user-friendly aspects to improvements in computational algorithm.
But here is a list to briefly present the vital new features added:

• A new gradient based optimization algorithm (Levenberg Marquardt) for EOS model regression
• Domain Sensitivity Analysis Export to Pipesim (compositional model)
  
• Mixture monotonicity check during mixture edition, regression and splitting
  
• New plus fraction characterization correlations is now included: Hosseinifar-Jamshidi (2014)
• A capability to compare the performance of any two mixtures on an experiment
  
• Multiple related samples splitting (Gamma distribution method)
• Regression on fluid composition by assuming constant feed weight percent and changing plus fraction molecular weight
  
• Modified ternary phase envelope calculation algorithm
• Quality lines to the phase envelope
• CVD tests for oil samples
• Plotting phase envelope gradient in Composition vs. Depth test
• Duplicating a test in a mixture
• Improvements in Export to Excel
• Averaging multiple mixtures by mole fraction, mass fraction and arithmetic averaging
• Automatic name selection for created pseudo-components after grouping
• Sorting grouped fractions by their molecular weights after grouping
• ِDuplicating test(s) from a mixture to other mixtures
• A capability to compare critical tests before and after tuning, splitting and grouping
• Modification in some of viscosity calculation algorithms
• Using multiplier in table unit converter

In addition to the above list, there are some new case studies added to the software which can be used as instantaneous used guides. Like always, the PVTmaster Development Team came up with some interesting improvements in user interface and also a number of functionality bugs are now fixed.

We decided to simply replace the previous version with the new one, so from now on only the latest version will be available to download in the website and the older versions are kept in a private repository and not the website. We would be also very happy to have your feedback on how the new version meets your expectation.

As a response and an appreciation to the enthusiasm of the visitors to PVTmaster trial version, the Company is now glad to offer the academicians (professors, faculty members and researchers), students and SPE student chapters special offers.
The following is a description for each category:



Industry
Industrial users are entitled for up to 50% discount under terms and conditions of DHZ Solutions AS.

Academicians
If you are a professor, faculty member or a researcher employed at a higher education institute you are entitled for up to 90%  discount on the price of the full version software license including the cost for the dongle and shipping.

SPE student chapters
We offer the SPE student chapters (Society of Petroleum Engineers student chapters) up to 95% discount on the price of the full version software license including the cost for the dongle and shipping. Each SPE student chapter can request for one license with these conditions.

Students
Full time students in the relevant programs (Petroleum Engineering, Chemical Engineering, Chemistry, Reservoir Engineering, Geosciences) will get the full version software free of charge. The cost for the dongle and shipping should be covered by the applicant though.

Simply mention in the "Buy" form that you are from which category and get the discount while we keep in touch with you for required documentation.

This offer is valid until the end of December, 2013.

UPDATE , 09/04/2013 @ 12:12 Norwegian time:
The problem has been resolved.
Now all browsers including Google Chrome may be used to download PVTmaster with no difficulties.

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Thanks to feedback from several users, the technical team for PVTmaster has encountered a minor incompatibility of the download page with the Chrome internet browser by Google. The error message can be disregarded using the "keep" option in this case. This could be a temporary solution to the problem while we keep working with Google to address the issue.

In the meantime we do recommend that users download the software using the internet browsers Mozilla Firefox or Internet Explorer for the best download experience.

The trial version of PVTmaster is now released and everyone can download the free 15-day trial version of PVTmaster 2013.2 today!

PVTmaster is a Windows-based application designed for modeling of phase behavior and properties of reservoir fluids.

Go to our download page for more information.

PVTmaster features in the current version are as follow:

1) Reservoir Fluid Description
•Extensive library of hydrocarbon and non-hydrocarbon components and their properties
• Property estimation correlations
•User-defined Plus fractions

2) Viscosity Model
•LBC(1964)
• Fong-Nghiem(1980)
• Pedersen(1984)
• Pedersen-Fredenslund(1987)
•Aasberg-Petersen(1991)
• Friction Theory(2001)
•Modified Friction Theory
• Jossi-Steil-Thodos(1977)

3) Fundamental Calculation
• Phase envelop plot
• Finger print plot
•Ternary diagram

4) Laboratory Analysis
•Constant composition expansion
•Differential Liberation
•Constant volume depletion
• Separator test
• Swelling test
•Composition with depth
• Saturation pressure and temperature
•Dew point pressure and temperature
•Two phase flash

5) EOS Parameter Regression
• Peng-Robinson and Soave-Redlich-Kwong EOS models, both two and three parameter versions
•Regression on composition as well as component properties
•Temperature-dependent volume shift
•Binary interaction coefficient
•Regression on viscosity model parameters
•Ability to group parameters for regression and apply varying weights

6) Reservoir Fluid Characterization
• Plus fraction splitting and lumping
•Generalized, exponential and Gamma distribution function for splitting and Carbon number range and Gaussian quadrature lumping methods
•Molar average, weight average and mixing rule algorithms for component grouping
•Automatic or user selectable component grouping

7) Asphaltene Modeling
• Flory Huggins
•Modified Flory Huggins
• Scott Magat
• Scott Magat (4-Parameter)
• Solid Model

8) Simulator Export to
•ECLIPSE reservoir simulator Compositional/ Black oil Model/ Equilibrium/ API Tracking
•CMG Compositional/ Black oil Model
•Microsoft Excel, Word