Eldfisk

05.07.2010

 

Eldfisk


Blocks and production licences
Block 2/7 - production licence 018, awarded 1965

Discovered
1970

Development approval
25.04.1975

On stream
08.08.1979

Operator
ConocoPhillips Skandinavia AS

Licensees
ConocoPhillips Skandinavia AS 35.11 %
Eni Norge AS 12.39 %
Petoro AS 5.00 %
Statoil Petroleum AS 7.60 %
Total E&P Norge AS 39.90 %

Recoverable reserves

Original:
132.2 million scm oil
44.0 billion scm gas
4.0 million tonnes NGL

Remaining as of 31.12.2009
40.0 million scm oil
5.9 billion scm gas
0.2 million tonnes NGL

Production
Estimated production in 2010:
Oil: 51 000 barrels/day, Gas: 0.50 billion scm, NGL: 0.05 million tonnes

Investment
Total investment is expected to be NOK 107.1 billion (2010 values)
NOK 65.6 billion have been invested as of 31.12.2009 (2010 values)

Operating organisation
Stavanger

Main supply base
Tananger


Development:
Eldfisk is an oil field located south of Ekofisk, in the southern part of the North Sea. The sea depth in the area is 70 - 75 metres. The original Eldfisk development consisted of three facilities. Eldfisk B is a combined drilling, wellhead and process facility, while Eldfisk A and Eldfisk FTP are wellhead and process facilities connected by a bridge. Eldfisk A also has drilling facilities. In 1999, a new water injection facility, Eldfisk E, was installed. The facility also supplies the Ekofisk field with some injection water through a pipeline from Eldfisk to Ekofisk K. The Embla field, located south of Eldfisk, is tied to Eldfisk FTP.

Reservoir:
The Eldfisk field produces from the Ekofisk, Tor and Hod Formations from the Early Paleocene and Late Cretaceous ages. The reservoir rock is fine-grained and dense, but with high porosity. Natural fracturing allows the reservoir fluids to flow more easily. The field consists of three structures: Alpha, Bravo and Øst Eldfisk. The reservoir lies at a depth of 2 700 - 2 900 metres.

Recovery strategy:
Eldfisk was originally developed by pressure depletion. In 1999, water injection began at the field, based on horizontal injection wells. Gas is also injected in periods when export is not possible. Pressure depletion has caused compaction in the reservoir, which has resulted in a few metres of seabed subsidence.

Transport:
Oil and gas are sent to the export pipelines through the Ekofisk Centre. Gas from the Ekofisk area is sent by pipeline to Emden, while the oil, which also contains NGL fractions, is routed by pipeline to Teesside.

Status:
For several years, it has been carried out work to plan a new development which is necessary for the production to continue in the future. The current plan is to build a new combined accommodation, wellhead and process facility, Eldfisk S, bridge-connected to Eldfisk E. PDO is planned in 2011 and the new facility will replace several functions of Eldfisk A and Eldfisk FTP.


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