Project Profile
Value: Undisclosed
Location: Central Graben Block 30/19a in the Central North Sea
Production: 2,216bpd of oil and 9mmcfpd of gas (May 2016)
Water Depth: 72 metres
The Affleck oil field was discovered by Shell in 1974.The field is located in Central Graben Block 30/19a in the Central North Sea in a water depth of 72m.
The field is operated by Maersk Oil (which has an interest of 66.67%) and the Talisman North Sea (which holds the remaining 33.33% of the stake). Oil was first produced from the well in August 2009 and its expected life is estimated to be 13 years.
Maersk Oil employed Noble TVL drill rig has been employed to complete the development drilling. The Affleck field development involved two subsea horizontal production wells tied back to the Janice Floating Production Unit (FPU) located in Block 30/17a through a new 28 km flowline.
The development included construction of a new gas export spurline to the offshore installation known as the Clyde Platform. Janice has undergone modifications to process and export the Affleck production line.
Subsea manifold, umbilical and control systems have also been developed for Affleck to support up to four production wells. The subsea installation contract for tying back the Affleck field to Janice was awarded to Technip Offshore UK. Under the contract, the 28km pipe-in-pipe flowline and associated umbilical and risers have been installed.
Technip has also managed the design, manufacture, fabrication and installation of two SSIV structures and an 80t manifold.A connection from the existing tee on the Janice gas export into the Clyde Platform has also been installed.
The Affleck field was developed with the existing FPU Janice A in Block 30/17a. The unit is placed on AKer H3.2 semi-submersible vessel. The structure\'s engineering, construction and support services have been provided by the Aker Kvaerner Offshore Partner. The FPU is capable of exporting 66,340 bopd oil and 40-60MMscfd gas.
The chamber production of Affleck comprises two subsea horizontal wells that are tied back to the Janice A FPU. The oil produced from the field is exported through the existing Janice pipeline into Norpipe trunkline system, then to Teeside in Northeast England. The gas is transported via existing Tees on the Janice and Juy export pipeline, via the Clyde and Fulmar facilities, to the SEGAL trunkline terminating at St Fergus in eastern Scotland.
**Affleck field: decommissioning programme approved by BEIS (in parallel with decommissioning of Janice and James fields) and next phase under way: wells plug and abandon (P&A) to be executed by end-Q2 2018, window until end-2018. Remaining subsea infrastructure removal (Affleck pipelines) to be executed by end-2020, window until Q2, 2022. Debris clearance and final survey to be executed between Q4 2020 and Q1 2021, window until end-H1 2022. Close-out report to be executed between Q1 2022 and end-H1 2022, window until end-Q3 2022. Projected costs disclosed to UK Department of Business and Energy (BEIS) but not publicly released.** DF, 03/01/2018
Operators:
Maersk Oil: Operator with 66.67% interest
Talisman North Sea: 33.33% interest
Contractors:
Noble: Drilling rig
Technip: Subsea installation contract
Aker: EPC contract