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Calsep’s main product is PVTsim Nova, a versatile PVT simulation program developed by Calsep for reservoir engineers, flow assurance specialists, PVT lab engineers, and process engineers.

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35 Years of PVT Expertise

Calsep is a leading provider of PVT simulation services to the oil & gas industry. Calsep has solved PVT modeling projects in all continents. The projects involve EoS modeling of all types of reservoir fluids, including natural gas, gas condensates, near critical fluids, black oils and heavy oils.

Calsep’s main product is PVTsim Nova, a versatile PVT simulation program for reservoir engineers, flow assurance specialists, PVT lab engineers, and process engineers.

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PVTsim Nova

PVTsim takes you all the way from fluid sample to design and process planning. You can quality check your fluid compositions, develop EoS models, handle water, evaluate the risk of solids precipitation and generate input to more than 30 different external simulators including some of the most widely used reservoir, process and flow simulators.

PVTsim Nova is used by more than 300 companies in the oil and gas industry.

Automated Input of Data

With PVTsim Nova 5.1 Calsep supports PRODML and Calsep Excel PVT Templates, which can be used for importing fluid compositions and PVT data into PVTsim in one click.

EoS Modeling Single Fluids

PVTsim offers an automated development of and equation of state (EoS) model. It enables PVTsim users to develop a high quality EoS model within minutes.

Field Wide EoS Modeling

In PVTsim users can develop EoS models for fluids in communication or fluids that will be commingled and produced through the same pipelines and separation process.

Flow Assurance Features

The polar nature of aqueous components calls for advanced models to accurately simulate the mutual solubility between aqueous and hydrocarbon phases.

 Interfaces to Reservoir, Flow Assurance and Process Simulators

The interface modules provide easy export to the most widely used reservoir, flow assurance and process software.

Upgrades & Support

PVTsim maintenance gives access to the latest version of PVTsim Nova and technical support from Calsep’s consultants who are specialized in thermodynamic modeling of all kinds of reservoir fluids.

Find your PVTsim Nova Package

Real Time Simulations

Separators, multiphase flow meters, transient flow systems

Calsep has developed a Flash API that allows the user to perform fast and robust flash calculations with PVTsim Nova technology. Calsep’s Flash API can be accessed through Calsep’s Public Cloud solution or it can be installed in your on-premise cloud solution.

Consulting Services

Examples of Recent Projects
Field Wide EoS Modeling
Asphaltenes & Wax
Multiphase Meter
Customized PVT Software

Go into details with Calsep Consulting Services

Develop your PVT modeling skills

With more than 30 years of experience training industry personnel on PVT and phase behavior of reservoir fluids, Calsep offers training programs for reservoir engineers, process engineers, engineers dealing with flow assurance or multi phase flow metering, laboratory staff, and others that need to apply PVT simulation software in their work.

Train and improve your abilities with Calsep

Calsep offers open courses as well as in-house courses to reservoir engineers, process engineers, engineers dealing with flow assurance or multi-phase flow metering, laboratory staff and others needing to apply PVT simulation software in their work.

Latest Tech Talk, Software Updates & Releases

Calsep at SPE ATCE 2021, Dubai

Come and meet Calsep’s team at booth #730 in Hall 7 at SPE ATCE and try PVTsim Nova 5 and hear about the latest updates and features.  Calsep is presenting two papers at SPE ATCE in Session …
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Meet the Calsep Team

contact with its customers and Calsep’s employees used to make several customer visits each year and to attend conferences to present new releases of PVTsim and to get input for the continued PVTsim development. Due …
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#16 Multiphase Meter Black Oil Properties

Introduction A multiphase meter (MPM) is a cost-effective solution for reservoir fluid allocation. The meter provides gas and oil flowrates of a well stream at actual conditions. To take full benefit of multiphase meter readings, …
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