“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.


EMPIG AS was established in January 2011. The company has developed and currently holds three Flow Assurance technologies. CoFounder AS has through their investment in the company taken responsibility for business development and management.

Fredrik Lund, Founder and Technical Director

EMPIG was established and developed by Fredrik Lund. Lund started working with the concept when employed in Statoil, and has continued the concept development through his work in Inventas AS where he is employed as department manager today. All rights to the project is transferred to EMPIG AS. Lund holds a master degree in Industrial Design Engineering from NTNU, has worked as a subsea engineer and product developer for 4 years in Statoil and 5 years in Inventas AS.

Morten Frøseth, Managing Director

EMPIG and CoFounder AS have signed an investment agreement where partner Morten Frøseth is performing as Managing Director. CoFounder AS is an investment based management company that invests in early technology companies in order to build and develop the company up to the central market and / or capitalization milestones.

Lars S. Strømmegjerde, Mechanical Engineer MSc

Lars holds a master degree in Mechanical Engineering from NTNU. Strømmegjerde has been involved in EMPIG AS since 2011. He has played a major part in the development and proof of concept of the PMFlow system. Today he is a partner in EMPIG AS contributing on further development of the technology portfolio.

Unique technologies

  • Patented bidirectional non-intrusive deposit removal system
  • Redundant and retrievable components
  • Fail safe, autonomous and continuous operations


  • Reduced CAPEX and OPEX
  • Longer step-out, opens new fields
  • Always full production rates
  • Enables cold flow


  • Less topside installations and offshore personnel
  • Reduced use and discharge of chemicals (MEG)
  • Reduced energy consumption


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. 

Schematic illustration of the EMPIG technology – compact cooler

EMPIG AS owns three complementary Flow Assurance technologies which removes deposits and boosts flow in production pipes – InFlow, PMFlow and PMPump. The system is a  processing plant which comprise a cooling zone with multiple parallel pipes, with a diameter of typically 3-4  inches. The zone  is designed to effectively cool the flow below the Wax Appearance Temperature (WAT) , thus limiting the area of pipe wall deposits to a predetermined area. This will dramatically reduce the area of which pipe wall deposit removal is required.

Having multiple parallel pipes the system is redundant and may easily be adapted to variations in production / flow rates.  The length of the cooling zone is typically 500-1000 m depending on the nature of the field. This is a very small fraction compared to the length of a typical production pipe line.

For the InFlow system we are currently developing a compact subsea cooler system with an industry standard Vertical Tie In system. This will make the InFlow flow assurance system modular, it will enable retrofitting to existing fields and the system will be scalable depending on expected flow rates in each specific application.

Click for the InFlow system overview

The processing plant further include a robotic, non-intrusive, sled placed on the outside of the pipe wall. The sled is retrievable and may include all of our complementary technologies. EMPIG’s technologies are unique in solving both wax- and hydrate challenges.



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.

Click to view the InFlow whitepaper


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. 

Click to view the PMFlow whitepaper

Click to view the PMFlow video


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.

EMPIG is a flow assurance system that provides a solution where there is no solution today. The potential for such a system is very large in terms of future oil and gas production:

  • No need to reduce production during pigging
  • No intervention from vessels for pig-launch is necessary
  • Less piping and topside installations
  • No need for DEH, MEG regeneration or pipe insulation
  • Better regularity and lower risk

Reduced CAPEX: EMPIG makes complete subsea solution possible, and thus removes platform costs which account for ca. 25% of the total investment costs today. EMPIG will also reduce construction costs for fields with long tie-back by reducing the number of pipes need (no service and chemical injection lines) and eliminating the high costs associated with passive and active isolation-/heating solutions. The cost of MEG regeneration plants will also be eliminated or greatly reduced. EMPIG would represent a 30% CAPEX reduction compared to alternative flow assurance solutions.

Reduced OPEX: EMPIG represents further significant reductions in operating costs by reducing the need for separate platforms and offshore personnel, cutting down on the use and recovery of chemicals, do not use electricity for heating and simpler operating systems. The use of MEG and similar chemicals will be vastly reduced or completely unnecessary.



CTO Fredrik Lund held a presentation during the Flow Assurance conference 2016 in Trondheim. Follow the links below to visit the NCEI-website and download the presentation.

Click to download the presentation



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.




Partners and investors

EMPIG has since 2011 carried out extensive feasibility studies and tests, and has now verified the technical concepts and benefits through technical analysis, functional models and simulations. This work has been done in collaboration with our partners SINTEF, Smart Motor AS, Inventas AS, HIST and NTNU.

The focus of EMPIG has been to prepare and implement a laboratory scale proof of concept pilot and through this work establish a partnership with one or more industrial partners for further development and verification of the concept.

In order to take the project forward to a full-scale verified solution, we are now seeking industrial partners and investors to participate in the further development of the company.


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

Technical Director
+47 99 24 98 89

Morten Frøseth

Managing Director
+47 40 22 65 51

Lars S. Strømmegjerde

Mechanical Engineer, M.Sc.
+47 92 26 97 08

Postal address

C/O CoFounder AS
Postboks 2339, Sluppen
7004 Trondheim

Visiting address

Otto Nielsens vei 12,
7052 Trondheim
+47 40 22 65 51

Copyright © 2012 Empig. All rights reserved.