Statoil in cooperation with Norway's Framo have developed new technology to remove hydrogen sulphide from wellstreams.
This gas must be extracted in part because it corrodes pipelines and to meet sales specifications from customers.
New features of the solution are the design of a choke and method of mixing the chemicals required, according to a Statoil project manager.
More effective use of chemicals is provided by the choke, which thereby cuts the discharge of these substances to the sea by 30 percent.
Hydrogen sulphide is found in Statoil's producing Statfjord, Gullfaks, Veslefrikk and Asgard fields, and in its undeveloped Huldra, Kvitebjorn and Kristin discoveries.
Plans call for the new technology to be used on the Asgard
B field in the Norwegian Sea.
After a six-month pilot run, the group will consider adopting it on other fields.
Statoil also said the environmental friendly project to remove hydrogen sulphide involves working on new and less polluting chemicals for removing this substance.
Treating the chemicals before discharging them to the sea also will be considered along with recycling opportunities.
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