Project Profile
Value: US$209 million
Location: Norwegian Continental Shelf
Block: 34/7
Water Depth: 150-220 metres
Exploration start-up: 1987
Production start-up: July 1994
Tordis is an oil field in the Tampen area in the northern part of the North Sea, between the Statfjord and Gullfaks fields. The water depth in the area is 150-220 metres. Tordis comprises four deposits: Tordis, Tordis Øst, Borg and 34/7-25 S. The field has been developed with a central subsea manifold tied-back to Gullfaks C, which also supplies water for injection. Eight separate satellite wells and two subsea templates are tied-back to the manifold. Tordis was discovered in 1987 and came on stream in July 1994. The plan for development and operation (PDO) for Tordis Øst was approved in 1995, for Borg in 1999 and an amended PDO for Tordis (Tordis IOR) in 2005. A subsea separator was installed on the field in 2007.
The reservoirs in Tordis and Tordis Øst consist of Middle Jurassic sandstone in the Brent Group. The reservoir in Borg consists of Upper Jurassic sandstone in the intra-Draupne Formation. The reservoir in 34/7-25 S is in Middle Jurassic sandstone in the Brent Group and in Upper Jurassic sandstone. The Tordis reservoirs lie at a depth of 2,000-2,500 metres. Tordis is produced by pressure support from water injection and by natural aquifer drive. Production from wells on Borg is dependent on pressure maintenance by water injection. Tordis Øst is produced with pressure support from natural aquifer drive. The well stream from Tordis is separated in the subsea facility and transported in two pipelines to Gullfaks C for further processing. The oil is exported by tankers, while the gas is exported via Gassled to Kårstø. Production from Tordis is above expectation due to new wells, high production efficiency, and optimised use of the booster pump.
Operator:
Statoil ASA: Operator with 100% interest
Contractor:
Aker Solutions: Well services
Apply Sørco: Topsides modification to Gullfaks C platform and replacement of production pipelines for Tordis
ClampOn AS: To supply sand monitoring sensors
Dolphin Drilling: Bideford Dolphin rig to be used for production drilling from 2014 to 2017
FMC Technologies: FEED/EPC Contract
Framo Engineering AS: Supplying pumps
GE Oil & Gas:
- Upgrade subsea control systems.
- September 2015, GE Oil & Gas signed framework agreement with Statoil Petroleum AS to provide subsea operations services for the Company\'s operated fields Tordis, Vigdis, Snorre and Troll, located north west off the coast of Stavanger. GE Oil & Gas will run the services from their Dusavik site, providing subsea operations services, including offshore installation and intervention, equipment repair and maintenance, studies, upgrades and modifications. The frame agreement effective October 1st will ensure efficient cooperation between the two parties, with GE providing highly skilled and experienced personnel to enable safe and efficient execution and to ensure maximum uptime to support Statoil\'s production targets.
Subsea 7 S.A.: Subsea / SURF - Engineering, procurement and installation of two 10\" 12 km oil production pipelines
Schlumberger (Norway): Integrated drilling services
Subcontractors:
Grenland Group: Fabrication and assembly of Subsea Separation and Injection Station awarded by FMC Kongsberg Subsea