Norway’s Petroleum Safety Authority (PSA) has granted ExxonMobil consent to extend the lifetime of the facilities on the Sigyn field until 31 December 2022.
The Sigyn field is a gas and condensate field in the Sleipner area of the North Sea, around 12km south-east of Sleipner Øst. Water depth is around 70m. The field has been developed using a subsea solution, and the wellstream is piped through two lines to the Sleipner A facility. Production from the field began in 2012.
Production was originally estimated to last until 2017, but new calculations show that it can be sustained until 2022, the PSA said. ExxonMobil applied for consent to extend the lifetime of the subsea facility at Sigyn and the associated wells, pipelines and control cables for managing and monitoring the wells.
The Sigyn field consists of two gas/condensate producers and one oil producer that are connected to the Sleipner A platform via a subsea template. In 2015, the average production on Sigyn was 18 MMcf/d of gas and 2400 b/d of condensate. In 2016, a new production well was drilled at the Sigyn field by using the semisubmersible drilling unit West Alpha. The new well has increased Sigyn production significantly.
In August 2016, the PSA gave Exxon the ok to use the Island Frontier and Island Wellserver for light well intervention at Sigyn.
ExxonMobil is the operator with 40% ownership, with Statoil holding the remaining 60%.
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