Project Profile
Location: 161 km north east of Aberdeen in the Central North Sea
Reserves: 662.1 million barrels
Production: 75,000 bpd
Platform type: Fixed steel jacket
Water Depth: 110m
Discovery year: May 1974
Start-up Year: November 1977
The Claymore Field is located in UK North Sea Block 14/19 on the southwest margin of the Witch Ground Graben. The principal structure is a southerly tilted and truncated fault block. The field is divided into three producing areas. Major production is from Upper Jurassic paralic sandstones of the Sgiath Formation and turbidite sandstones of the Claymore Sandstone Member of the Kimmeridge Clay Formation in the downflank Main Area. Minor production is from Permian carbonates of the Halibut Bank Formation and Carboniferous sandstones of the Forth Formation in the crestal Central Area. The Northern Area is a northerly plunging nose, extending graben wards from the Claymore tilt block. Production in the Northern Area is from Lower Cretaceous turbidite sandstones of the Valhall Formation.
A small amount of oil was recovered on a wireline test in 1972 from Permian carbonates in the crestally located 14/19-1 well, in what is now termed the Central Area. In 1974 the Main Area was discovered by the southerly downdip well 14/19-2, and the Northern Area was discovered by the northerly downdip well 14/19-6A. Initial oil in place was 1452.9 million barrels with currently estimated ultimate proved recovery of 511.0mmbl of oil. A 36-slot steel platform was installed in 1977. Two subsea water-injection templates were added in 1981 and 1985. Cumulative production to 6 July 1988 was 322.9mmbl of oil and daily production was 75 000 bpd of oil from 28 producers, supported by 16 injectors.
The Scapa field was developed as a subsea tie-back to the Claymore platform in 1982.
Operators:
Repsol Sinopec Resources UK Limited: Operator with 13% interest
Repsol Sinopec North Sea Limited 36.66% interest
Transworld Petroleum (U.K.) Limited 17.7% interest
Repsol Sinopec Alpha Limited 13.73% interest
Repsol Sinopec Oil Trading Limited 11.37% interest
Dana Petroleum (E&P): 7.52% interest
Contractors:
Fabricom Offshore Services: Awarded a contract by Talisman Energy for the provision of Front End Engineering Design for the Claymore Compression Upgrade Project. The contract covers all topside Greenfield and Brownfield elements and interfaces associated with the new compression module and the existing platform. The FEED will form the basis for the detailed engineering design, material procurement, implementation, commissioning and overall project estimate.