Calsep has been a leading provider of PVT simulation services to the oil and gas industry for the last 30 years.
Through a close contact with clients Calsep has developed an extensive knowledge base enabling Calsep to offer PVT simulation studies within EOS Modeling and Flow Assurance for all kinds of fluids including natural gases, gas condensates, near critical fluids, black oils, and heavy oils.
For each stage of a PVT simulation study Calsep has developed its own procedures, published them in the open literature, and received feedback from clients.
Based on this Calsep is constantly improving its consultancy services.

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 25 years, PVTsim carries the information from experimental PVT studies into simulation software in a consistent manner and without losing valuable information on the way.
PVTsim 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 is petroleum phase behavior at the tip of your fingers.

Kongsberg Oil & Gas Technologies develops and delivers software products, systems, solutions and services for development and operation of oil & gas fields addressing the upstream market from reservoir to process plant.
We are your trusted advisor for Intelligent Improvements partnering with our customers within drilling, production, subsea and field logistics to make operations safer and more efficient. We have an international footprint, working with customers worldwide, on land and at sea.