About Calsep

Calsep stands for CALculation of SEParation processes. Calsep is a specialist company within oil and gas properties and phase equilibria. Consulting services, PVT and flow assurance software are the main products.

35 years of PVT services

From the first beta version and client to being a benchmark software and consultancy company.

At Calsep we are continuesly improving our software adapting to new technologies, consumer behaviour and tendencies in the oil and gas industry. From a humble start in Copenhagen in 1982 to offices in 4 continents offering services to the leading companies in the oil, gas and polymer industry.

Offices

For more information about Calsep office locations, phone and fax numbers, please go to Calsep locations.

Copenhagen

Calsep A/S
Headquarter & Europe

Dubai

Calsep FZ LLC
Middle East

Houston

Calsep, Inc.
US and LATAM

Kuala Lumpur

Calsep Asia Pacific Sdn Bhd
Asia and Pacific

Global team

At Calsep we reach all continents, of course via online meetings but also via our staff and representation in United States, Europe, Asia and in the Middle East. For us it is a big value to be present where our clients typically operate.

Get to know us better:

Latest News

PVTsim Nova 5.4 Released

PVTsim Nova 5.4 has been released. It can be downloaded from Client Area for more information about the updates check out the list of updates here PVTsim Nova 5.3 to 5.4
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PVTsim Nova 5.3 Released

We are pleased to announce that PVTsim Nova 5.3 has been released. Check out the list of updates for the release here: https://www.calsep.com/pvtsim-nova-5-2-to-5-3/
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Publications

Open book policy

It is Calsep policy to publish our research results on improved techniques for fluid description and modeling of phase equilibria. The research and development work has been documented in more than 60 publications and 2 textbooks, all authored or coauthored by Calsep’s consultants.

The publications cover subjects like:

  • EOS modeling
  • Solids precipitation and deposition
  • Computer algorithms for solving phase equilibria