STAVANGER, Norway — The Norwegian technology company Techouse has passed its biggest test to date — and barely avoided corona delays. The technology company have completed the development of an all-in-one lightweight water treatment module using membrane filtration technology.
Three years after the Stavanger-based company Techouse started work on Front End Engineering & Design (FEED) on the sulfate removal unit (SRU) the module has been completed without incidents and on schedule. The system will help protect production wells for Equinor's Johan Castberg subsea development in the Barents Sea.
A new industry standard?
The sulphate removal technology provided by Techouse will remove the sulfate present in seawater before it's injected into the reservoir, reducing the potential for sulfate scaling. The compact solution consists of three major filtration systems combined in one unit with the capacity to treat more than 180,000 barrels of seawater per day, which corresponds to the expected daily oil production from Castberg.
"For Techouse, the development of this module for Castberg is of strategic importance. Delivering such a comprehensive project on time and budget takes our company to the next level. We see the opportunity for a new industry standard in water treatment technologies, and we expect to see other operators adopt this solution," says Managing Director of Techouse, Svein Helge Pettersen.
The new design provides a compact and space-saving solution for Equinor. The 1,300-tonne module is nevertheless one of the larger components to be delivered to Castberg ship, taking up half the width of the vessel that is 55 meters wide and 295 meters long.
"The module is designed to operate in harsh weather conditions. Johan Castberg is located in an Arctic climate about 240 kilometers northwest of Hammerfest, which demands extreme quality materials. The module is, among other things, prepared for the extreme cold with the possibility of heating if needed," Pettersen explains.
Early testing
The SRU consists of over 100 sequences, making it one of the most complex modules on Castberg. Techouse and Equinor are now in the process of testing the control sequences to remove any teething troubles before the module leaves the yard in Egersund this fall.