2 No Jackets and Piles
Gas from the Rough field off the East Yorkshire coast was first produced and brought ashore in 1975 from platforms installed during the initial Alpha (A) phase of the field’s development. In the early 1980’s during the Bravo (B) phase of development, platform facilities were introduced which enabled the capability for both gas extraction from the reservoir, and gas re-injection into the reservoir. The re-injection feature enabled a significant amount of gas to be stored and provided the supply network with a means of adapting to seasonal domestic demand.
In June 1982, the first of two contracts to be awarded to the Yard by British Gas for facilities in the Rough Field were for a Process Jacket (BP) and The Drilling / Wellhead Jacket (BD) weighing 2,100 Tonnes and 2,400 Tonnes respectively. The contract work-scope also included the fabrication of the Piles for the BP Jacket at 2,100 Tonnes and for the BD Jacket at 2,450 Tonnes.
The two eight leg Jackets were assembled one behind the other on temporary skid-ways for loading out onto the transportation barge. Fabrication was completed in July 1983, and installation followed in July/August the same year, with production start-up in 1985.
The Rough field is divided into two complexes approximately two kilometres apart. The older Alpha complex, comprises AD (Drilling / Wellhead) Platform bridge-linked to AP (Production) Platform and the newer Bravo complex being the BP (Production), BD (Drilling / Wellhead) and CD ( Wellhead ).