The press release from BP states that the forecast was to produce 12 Mboe/day at peak. So far, they have exceeded this, reaching 15 Mboe/day at peak since the start-up in late December.
The Alligin field subsea development was approved by the Oil and gas authority back in 2018. The field is located 140 kilometres west of Shetland in a water depth of 475 metres. It forms part of the Greater Schiehallion Area. BP is the operator (50%), with partner Shell 50%.
The development has included new subsea infrastructure, consisting of gas lift and water injection pipeline systems, and a new controls umbilical, according to BP. It consists of a two-well subsea tieback into the existing Schiehallion and Loyal subsea infrastructure and the Glen Lyon floating, production, storage, offload (FPSO) vessel.
Alligin was discovered in 1995 with exploration well 204/19-6, the reservoir is Lower Palaeocene reservoirs which comprise deepwater confined turbidite sands, linked to similar-aged reservoirs on Schiehallion, sharing similar reservoir properties.
Text: TERJE SOLBAKK
