Contractors Unlimited
Snapshot - Don Fields
West Don
West Don is located in the northern North Sea, approximately 150 km northeast of the Shetland Islands and 12 km north of the Thistle field in a water depth of approximately 500ft.
The Northern Producer floating production facility, which recently finished an assignment on the Galley field, will be utilised for processing fluids from both fields ahead of export. It has been secured for field life under a lease arrangement, with lease cost based on an oil throughput tariff dependent on Brent oil prices.
Oil export from the Northern Producer will take place initially via offshore tanker, switching to pipeline export via a subsea tie-back to existing infrastructure in due course.
Petrofac Energy Developments assumed operatorship of West Don after purchasing a 40% equity interest in Block 211/18a (West Don Area) from former co-owners BP and Conoco in February 2006. The West Don field straddles Blocks 211/13b and 211/18a (West Don Area) (licences P.1200 and P.236 respectively). Owners of the two blocks agreed a fixed field unitisation, which resulted in Petrofac owning 27.7% of the West Don unit.
| West Don |
| Owner Equity % | 211/18 (P.236) | 211/13b (P.1200) | Unit Area |
| Petrofac | 43.12 | - | 27.700 |
| First Oil | 30.00 | - | 19.275 |
| Valiant Petroleum | 26.88 | - | 17.275 |
| Nippon Oil Exploration and Production (UK) Ltd | - | 50.00 | 18.500 |
| Stratic Energy | - | 50.00 | 17.250 |
The West Don field was discovered in 1975 by well 211/18-9 that contained oil in
sandstones of the Middle Jurassic Brent Group. The West Don reservoir comprises
circa 470ft thick Brent sandstones. The under-saturated oil is held in an
elongate easterly dipping, fault bounded reservoir at a depth of greater than
10,600ft.
Don Southwest (Don SW)
Petrofac Energy Developments assumed operatorship of Don SW after purchasing interests from former co-owners BP and Conoco in December 2006. Petrofac as operator holds 60% equity in licence P.236 (Block 211/18a-Don Southwest Area) with the sole partner Valiant North Sea Limited holding 40%.
Don SW is an oil field comprising 450ft thick Brent sequence sandstones, as producing in the nearby Thistle and South Magnus fields. The under-saturated oil is held in a combination of dip and fault traps at a depth of 11,000 to 11,500ft.
Search for more News
Last updated 29/04/09
