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Oil, Gas, Petrochemical Industry News
News Release from: Aker Kvaerner Oil and Gas | Subject: Glycol process technology
Edited by the Processingtalk Editorial
Team on 17 November 2004
Operators select Aker Kvaerner process
technology
Aker Kvaerner has been awarded two new contracts by Hydro and ConocoPhillips, for cleaning and recycling of the glycol used to enhance the flow of gas in subsea pipelines in order to avoid freezing
Aker Kvaerner has been awarded two new contracts by Hydro and ConocoPhillips The contract awards comprise design and delivery of Kvaerner Process Systems technology for cleaning and recycling of the glycol used to enhance the flow of gas in subsea pipelines in order to avoid freezing
This article was originally published on Processingtalk on 2 Dec 2004 at 8.00am (UK)
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The total value of the two contracts is approximately NOK 93 million.
One of the contracts has been awarded by Hydro as part of the Ormen Lange gas plant construction project.
This contract has an approximate value of NOK 43 million.
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The scope of work includes engineering, procurement and construction of a complete glycol based process unit.
This includes testing and assembly of components, structure and electrical and instruments work.
This complete system will remove dissolved salts from the Monoethyleneglycol (MEG) used in the transport pipeline from the subsea wells to the onshore process facility.
Kvaerner Process Systems in Norway will execute the project and delivery will take place during summer 2005.
The second contract has been awarded by ConocoPhillips for their Brodgar gas and condensate reservoir on the UK continental shelf.
The reservoir water has a high salt content and Kvaerner Process Systems has been contracted to deliver technology, engineering and key components for the dewatering and desalting system.
The contract value is approximately NOK 50 million.
Project management, engineering and procurement will be carried out in Norway in co-operation between Kvaerner Process Systems and Aker Kvaerner Engineering and Technology.
ConocoPhillips and their contractor AMEC in Aberdeen will manage the assembly and construction.
Pre-engineering is well underway and will be followed by detailed engineering and procurement.
Follow-up of equipment deliveries and assembly will last throughout 2005 and 2006.
Both of the new process units will use monoethyleneglycol (MEG), which is used as an anti freeze solution used when transporting gas in pipelines on the seafloor.
The process, patented by Kvaerner Process Systems, was originally developed for the Statoil Aasgard field in the Norwegian Sea.
Technical note.
Monoethyleneglycol (MEG) is a product added to the gas flow at the well heads to avoid hydrates in the pipelines.
The hydrates are crystals formed in high pressure and low temperature gas flows, which have not been treated/processed prior to transportation.
The hydrates may form and clog the pipelines.
Monoethyleneglycol added to water will prevent hydrate formation clogging of the pipelines.
At the reclamation unit, MEG will be separated from the gas and cleaned for water, residues of hydro carbons, different salts and particles.
The pure monoethyleneglycol is returned to the well head in a separate pipeline for reuse in a closed loop system.
The MEG processing is vital to all gas plants with subsea transport of unprocessed gas.
If the MEG injection stops, the gas production will be in jeopardy.
This applies both to the onshore Ormen Lange gas plant and the offshore Britannia platform.
MEG is a costly medium and large volumes are in circulation.
It is therefore important to have a high recovery rate and high quality MEG treatment plants.
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