Four subsea templates installed on Kristin will be tied back to a floating production platform with a daily production capacity of 126,000 barrels of condensate and just over 18 million cubic metres of rich gas. The reservoir lies almost 5,000 metres beneath the seabed, and is due to be drained through 12 subsea wells. The Kristin reservoir ranks as the highest pressure and highest temperature field to be tapped on the Norwegian continental shelf so far at 13,195 psi (910 bar) and 338°F (170°C). The preferred development scheme consists of using a floating production facility with a daily production capacity of 125,000 barrels of condensate and 13 million m³ of gas. In this scenario, the rich gas can be piped through Åsgard Transport to a land terminal (Kollsnes/Kårstø) for the separation of the NGL. The condensate fraction could then be piped to the Åsgard C storage ship and, from there, loaded into shuttle tankers, together with Åsgard condensate. The major difference to any other platform is the amount of exotic materials required to cope with the wellstream. It has 94 percent white steel on pipework systems. Exotic steels, titanium, austenitic and superaustenetic feature in this floating facility too. A second Kristin differentiator is the criticality of the topsides weight. Extensive use has been made of FRP grating on large areas of the topsides and aluminum features on decks, stairs, gangways, handrails, and tanks. Statoil has used the Transocean Arctic to drill 5km west of Kristin, to prove gas and condensate in the northern part of the Erlend structure. A minor gas find was previously made in the southern part of the structure. Statoil also drilled in the M-prospect, 12km north of the Kristin using the Scarabeo 5 rig. Targeted at a separate structure in the 134 B licence, it aimed to check whether gas and condensate were present.
Kristin Deepwater, North Sea, Equinor, Europe(North),