ExxonMobil is seeking a permit to plug 22 wells at its Jotun field in the North Sea, with start-up planned for April, according to news reports.
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The Jotun vessel. Image from ExxonMobil. |
The Jotun field is located some 200km west of Stavanger, between the Balder and Heimdal fields, at 126m water depth.
The company will use a modular rig mounted temporarily on Jotun B platform, with operations set for completion in 2017.
According to an impact assessment plan, partners will discontinue production at Jotun field in the North Sea in addition to final disposition field installations. The impact assessment comprises a wellhead platform Jotun B, a floating storage and production vessels, Jotun A, and associated pipelines and infrastructure, offshore.no said.
Exxon and partners have come to the decision that it is not economically viable to further develop the field by using current facilities and pipelines, and have recommended a decommissioning plan, which will include removing the wellhead platform, and using the FPSO in another location.
In June, the Petroleum Safety Authority Norway (PSA) granted ExxonMobil an extension to use the Jotun A floating production storage offloading (FPSO) vessel and Jotun B wellhead platform beyond their original expected lifetimes in the North Sea.
Jotun’s average production in 2014 came in at 2100 boe/d, and in 2013 it was 2800 boe/d According to Exxon, Jotun production has been on the decline over the last few years, thus resulting in spare production capacity.
To utilize Jotun’s capacity, Exxon connected Balder to Jotun via a gas pipeline, while pipelines were installed between Ringhorne and Jotun thereafter, allowing parts of the Ringhorne field to produce to the Jotun A FPSO, in addition to the Balder FPSO.
In 2014, Ringhorne sent an average of 8400 b/d to Jotun for final processing and storage prior to export. In addition 7 MMcft/d of gas was exported to Jotun from Balder and Ringhorne for further gas export to Statpipe.
In 2012, modifications were made to the Jotun facilities to tie-in the Jette field. Production from Jette commenced in spring 2013, and Det norske oljeselskap, operator of Jette, has entered into a production handling agreement with ExxonMobil.
ExxonMobil is the operator of the Jotun field with 45% stake. Partners include Dana Petroleum (45%), Det norske (7%), and Faroe Petroleum (3%).
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