Valhall
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Valhall
Valhall is a demanding field and has been under continous development since start-up in 1982. A new high tech production and hotel platform will be installed in 2010. The field is expected to produce until 2050.
The activity at Valhall is very high and a flotel rig is at the field until 2011 to accommodate extra personnel working with modifications and preparing for the new platform. This work goes on whilst there is full operation on the seven platforms that makes up the Valhall field. Several additional projects are also under consideration.
| Discovered | 1969 | |||
| On stream in | 1982 | |||
| Licensees BP Norge AS Hess Norge AS Norske Shell AS Total E&P Norge AS |
28.09% 28.09% 28.09% 15.72% |
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| License period | 2028 | |||
| Reservoir rock | Chalk | |||
| Reserves at sanction | 247 million barrels (435 mm boe) Later upgraded to 1272 mmboe (1048 mmbo) |
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| Remaining reserves (including the flanks and water injection) 01.01.2009 |
Oil: 47,2 million scm NGL: 1,01 million tonnes Gas: 8,1 billion scm |
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| Estimated production in 2009 (including the flanks and water injection) |
40 700 barrels per day | |||
| Production wells | 52 producers | |||
A helicopter trip to the Valhall field is longer than to any other field in the Norwegian sector. The Valhall field lives a life of its own with normally approximately 200 people working in shifts day and night - 24 hours a day with 14-day offshore periods. During 2009 and 2010 additional accommodation is present, and the manning level higher in order to execute a lot of planned activities such as the Valhall redevelopment project (VRD). Regular manning levels during these two years will be between 350 and 400 people.
The field gets supplies at least twice a week. Both provisions and equipment are transported by boat from the warehouse and supply base in Tananger.
Valhall has good neighbours and co-operators with the adjacent platforms - particularly Ekofisk and Gyda/Ula - concerning tele-communications, boat and helicopter traffic.
The field gets supplies at least twice a week. Both provisions and equipment are transported by boat from the warehouse and supply base in Tananger.
Valhall has good neighbours and co-operators with the adjacent platforms - particularly Ekofisk and Gyda/Ula - concerning tele-communications, boat and helicopter traffic.
Production capacity at Valhall is about 150.000 bbld. Valhalls process is a bit unique due to the NGL regeneration plant, i.e. turbo expanders, low temperature separators and NGL stabilization column.
The Valhall field centre has been through a successful lifetime extension process, and many of the current wells will be producing for many years to come even though the field experience substantial subsidence. The accommodation and processing equipment will however be completely replaced by the new PH platform expected to go online in 2010, delivered by the Valhall Redevelopment Project (VRD). This future Valhall will get power from shore by a power cable.
The Valhall field centre has been through a successful lifetime extension process, and many of the current wells will be producing for many years to come even though the field experience substantial subsidence. The accommodation and processing equipment will however be completely replaced by the new PH platform expected to go online in 2010, delivered by the Valhall Redevelopment Project (VRD). This future Valhall will get power from shore by a power cable.
Development
Valhall is an oil field located in 70 metres of water. The field was originally developed with three facilities.The Valhall complex consists today of five separate steel platforms for quarters, drilling, wellheads, production and water injection respectively. The platforms are bridge-connected. In addition the field has two unmanned flank platforms, one in the south and one in the north, both around 6 kilometers from the field center. Valhall is also the owner of the 2/4 G-platform installed in 1982, located at Ekofisk and operated by Conoco Phillips. The platform was taken out of service as part of Ekofisk II in 1998.
The Quarters Platform (QP)
was built in 1979 and put to use in July 1981. It has accommodations for 208 people.The Drilling Platform (DP)
is situated between QP and PCP. It has 30 well slots, waste injection and a drilling rig. The platform started its activity on 17 December 1981, at that time with the first covered derrick.The Production Platform (PCP)
is built to process 168,000 barrels of oil and 350 million cubic feet of gas per day. The platform is 65 meters high and weighs 21,000 tons. The oil production is piped to 2/4-J at the Ekofisk Center and goes to Teesside in England. The gas is transported directly via Norpipe pipeline to Emden in Germany. The platform also processes oil and gas that comes from Hod.The Wellhead Platform (WP)
was installed in April 1996 and first oil production started in June the same year. WP has 19 well slots. Total cost, including drilling of the wells, is approx. 1,5 billion NOK. A central location and some design capacity allowance put into the VRD project make it possible for the Valhall complex to possibly host several adjacent fields in the future.The Water Injection Platform (IP)
Fixed steel platform, bridge linked to the existing Valhall wellhead platform. Integrated topsides with water injection facilities, seawater and produced water treatment facilities and power generation. Platform-based drilling rig, which can skid on beams from IP to WP, including mud mixing module. The platform configuration allows for drilling and maintenance of wells on the new platform (24 wells total) and on the existing WP platform (19 wells total). State-of-the-art automated drilling rig which through a fiber optic line is linked into an Onshore Operations Center in Stavanger, providing the same data as they have offshore and ability to involve more brains to solve issue and enhancing safety and requiring fewer POB offshore.
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