Norway’s Petroleum Safety Authority (PSA) has cleared Statoil for the design engineering of the drilling platform for the Johan Sverdrup field, in addition to giving the Norwegian giant approval to use the Haven jackup at the field.
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Image of Haven, from Jacktel. |
Johan Sverdrup is in the North Sea, about 155km west of Karmøy in Rogaland county. The field is under development, and production is planned to start in late 2019.
The PSA carried out an audit of the design engineering of the Johan Sverdrup drilling platform on 26 and 27 January at the offices of the supplier Aibel in Asker, where the PSA said no non-conformities were detected.
According to the PSA, an audit during the design engineering and construction of facilities is highly important, since it is in these phases that key parameters are defined for prudent operations once the facilities are put into use.
The PSA conducted another audit of Statoil and its follow-up of the Haven mobile facility for use on the Johan Sverdrup field earlier this month.
The Haven jackup is certified for use in water up to 83m, however, Statoil requested to use Haven in deeper water on the Johan Sverdrup field.
To do this, considerable lengthening of the legs must occur, and the requirement for a different type of foundation (suction anchors). Haven is to be deployed on the Johan Sverdrup field from 2018.
“On 1 and 2 February 2017, we carried out an audit of Statoil in connection with the extension of Haven's legs, new foundations and site-specific analyses of the load-bearing structures,” the PSA said. “The objective of the audit was to perform spot checks of whether the project engineering of the jackup facility complied with applicable regulations.”
Although no non-conformities with the regulations were detected during this audit, one improvement point was identified, concerning the use of Statoil's FAR values as acceptance criteria for risks.
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