“For distances over 70km Cold Flow can represent a 50% reduction in cost” – Weatherford 2013



EMPIG AS develops Flow Assurance technologies for the oil- and gas industry.  Our patented technologies will reduce CAPEX and OPEX, increase oil recovery, open hard to reach areas and reduce environmental impact.


In 2017 the project was granted funding through the Large-scale Programme for Petroleum Research (PETROMAKS 2) by the Research Council of Norway. The funding enables increased project activity towards large scale technology testing in 2019.

Together with our external contributors we have created a large multi-disciplinary team of researchers, mechanical engineers, process engineers and experienced subsea technology product developers.



  • Fredrik Lund, Founder and CTO
  • Morten Frøseth, Managing Director / CEO
  • Lars S. Strømmegjerde, Senior Mechanical Engineer
  • Roar Larsen, former Flow Assurance expert at SINTEF
  • Bengt Are Wågheim, Multi-disciplinary resource
  • Per Jonny Nutudal, Mechanics and Robotics
PETROMAKS 2 Project Team

  • EMPIG AS (Project owner)
  • SINTEF Industry
  • Kvaerner
  • VNG
  • Lundin Petroleum
  • The Research Council of Norway



EMPIG will solve both wax and hydrate challenges and enable a cheap and robust Cold Flow regime. This will make it feasible to implement complete subsea developments and significant longer tie-back distances than what is possible today. The system can also be used onshore for low cost long distance hydro carbon transport. The potential for the system is vast in terms of future oil and gas production.

Our Flow Assurance technology will enable a efficient production and directly reduce the need of harmful chemicals and use of valuable resources.


REDUCED CAPEX: EMPIG makes the subsea factory possible, and represent a 30% CAPEX reduction compared to alternative flow assurance solutions.

  • No need for a platform
  • No service and chemical injection lines
  • No need for passive and active isolation-/heating systems
  • No MEG regeneration plants

REDUCED OPEX: EMPIG represents further significant reductions in operating costs.

  • No need for separate platforms and offshore personnel
  • Significant reduction on the use and recovery of chemicals
  • Do not use electricity for heating and enable simpler operating systems


“For distances over 70km Cold Flow can represent a 50% reduction in cost” – Weatherford 2013


EMPIG AS holds multiple processing plant technologies for removal of wax and hydrate deposits in pipelines in a cold flow regime – both subsea and onshore. 


The Electro-Resistive Flow (ERFlow) system removes pipe wall deposits by the means of heating of the pipes. The system is unique in the sense that it has no moving parts. Pipe segments are sequentially heated to release deposits from the pipe wall.

The ERFlow System may installed in any flow system where the pipe material is electrically conductive.

Feel free to contact EMPIG for more information.


The Inductive Flow (InFlow) system removes pipe wall deposits by the means of inductive heating of the pipes. The system operates both up- and down stream without reducing flow rates. When the pipe is heated, the deposit will separate from the pipe wall and is effortlessly transported with the rest of the bulk flow.

A specially designed inductive coil is embedded in a non-intrusive external sled placed on the outside of one, or several, pipes. Any deposit on the inner wall of a pipe is removed as the sled is moved along the cooling zone pipes.

InFlow may be used in any flow system where the pipe material is electrically conductive. The concept is proven feasible through laboratory testing.



The Pemanent Magnet Flow (PMFlow) system removes deposit in pipe lines using a bidirectional, non-intrusive, magnetic and hollow cleaning pig. The pig is controlled and moved from the outside of the pipe by an autonomous robotic sled, which is magnetically locked to the pig.

Independent of flow direction the hollow body  pig can be moved both up or downstream even with full production rates. All non-magnetic materials can be used in the cooling pipes (aluminum, stainless steel, carbon fiber, not carbon steel).

The concept is proven feasible through laboratory testing.



Schematic illustration of the EMPIG technology – compact cooler



We climb the TRL ladder and hire personnel with full focus on technology development and testing.


EMPIG plans to do a large scale, and long term, proof-of-concept (TRL) test and the project is granted Petromaks 2 funding. We partner up with SINTEF Industry, Kværner Verdal, VNG and Lundin.


CTO Fredrik Lund held a presentation during the Flow Assurance conference 2016 in Trondheim.


InFlow and PMFlow are in constant development. Substantial lab-test has proved both concepts feasible.


Positive result on the InFlow patent application from the Norwegian Industrial Property Office.

EMPIG is currently developing two complementary technologies – InFlow and PMFlow for pipe deposit removal. Both are non-intrusive, bi-directional methods, which will not affect the flow. Stay tuned!


EMPIG is further developing the PMFlow System and a proof of concept is performed. The results are better than expected.

MSc. Lars Standal Strømmegjerde has joined EMPIG AS as a resource contributing in technical development. He has been involved in the EMPIG PMFlow System since the fall of 2011.


  • 2012 Nominee ONS Innovation Award, to be continued »
  • 2012 Fianlist Innovator “Start-støtte” »




Clogging from hydrates and wax depositions is a huge and costly challenge for the oil industry. The deposits are formed when the warm flow cools down due to the temperature differences between the pipe and surroundings on the sea floor. Such deposits will clog the pipes and make them useless if it is not regularly removed in one way or another.

The current flow assurance solutions are based on keeping the flow over Wax Appearance Temperature (WAT) – the temperature limit where wax and hydrates are formed. If the temperature of the flow is over WAT, wax and hydrates are avoided, but it is very expensive to keep the temperature up even at short distances.

The easiest way to achieve a profitable and safe system for long-distance transportation in pipelines is to introduce a Cold Flow regime.

Cold Flow is achieved when the sea water, production flow and the pipeline keeps the same temperature (ambient – the oil is cooled to ambient temperature), where you do not get wax buildup. The challenges for achieving Cold Flow is in the cooling process, where oil and gas is cooled down to get sea water/ ambient temperature. In this process we will have significant amounts of deposits, but in a controlled and restricted area.

EMPIG’s technologies represent significant economical, environmental and safety benefits:

  • By far the cheapest alternative for > 70 km
  • Eliminates risk of hydrate-/wax blockages with significant personnel risk
  • Reduced use of hazardous chemicalsNo release of harmful chemicals to the sea (methanol, MEG, glycol, LDIH, corrosion inhibitors, etc.)
  • No need for pipe insulation
  • No PIG-loops and MEG-lines
  • No dredging of pipes for insulation purposes
  • Reduced CO2 emissions


Fredrik Lund

CTO, Senior Mechanical Engineer, M.Sc.
+47 99 24 98 89

Morten Frøseth

+47 40 22 65 51

Lars S. Strømmegjerde

Senior Mechanical Engineer
+47 92 26 97 08

Bengt Are Wågheim

Senior Mechanical Engineer
+47 46 52 21 10

Roar Larsen

Senior Scientist, Professor II
+47 92 63 25 60


Visiting address

CoFounder TechHub
Pirsenteret / Havnegata 7
7010 Trondheim
+47 40 22 65 51

Postal address

C/O CoFounder Management AS
Postboks 1211, Torgard
7462 Trondheim


Copyright © 2012 Empig. All rights reserved.