Bibliographic Citation
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| Title | Development strategy at Statfjord field |
| Creator/Author | Buza, J.W. |
| Publication Date | 1986 May 01 |
| OSTI Identifier | OSTI ID: 5378900 |
| Report Number(s) | CONF-860624- |
| Other Number(s) | Journal ID: CODEN: AAPGB |
| Resource Type | Conference |
| Specific Type | Journal Article |
| Resource Relation | Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States); Journal Volume: 70:5; Conference: American Association of Petroleum Geologists annual meeting, Atlanta, GA, USA, 15 Jun 1986 |
| Research Org | Mobil Exploration Norway, Inc., Stavanger |
| Subject | 02 PETROLEUM; 03 NATURAL GAS; NATURAL GAS FIELDS; GEOLOGY; NORTH SEA; OIL FIELDS; NORWAY; GEOLOGIC FORMATIONS; PERMEABILITY; POROSITY; RESERVOIR ROCK; ATLANTIC OCEAN; EUROPE; GEOLOGIC DEPOSITS; MINERAL RESOURCES; NATURAL GAS DEPOSITS; PETROLEUM DEPOSITS; RESOURCES; SCANDINAVIA; SEAS; SURFACE WATERS; WESTERN EUROPE |
| Description/Abstract | The Statfjord field is the largest oil field discovered in Europe, with initial recoverable reserves of more than 3 billion bbl of oil and 3 tcf of gas. The field lies 120 mi offshore from Bergen, Norway, in 475 ft of water, and is being developed using three Condeep platforms with a combined production capacity of more than 800,000 bbl/day. To date, approximately 70 of a planned 99 development wells have been drilled. The main hydrocarbon reservoirs are Mesozoic sandstones of the Brent Group and Statfjord Formation. Both units exhibit excellent reservoir properties, with porosities ranging from 20 to 35% and permeabilities up to several darcys. A sandstone unit within the intervening Dunlin shales is under study for future development. Pressure maintenance is achieved in the Brent Group by water injection and in the Statfjord Formation by high-pressure miscible gas displacement. Reservoir simulation studies and regulator formation-pressure monitoring guide the drilling sequence and, coupled with field geology, dictate the selection of well locations and completion intervals. Placement of updip wells along the eastern flank of the field, where the Brent and Statfjord reservoirs are erosionally and tectonically thinned, is determined by mapping the start of truncation for each reservoir. Total oil recovery is enhanced by initially completing wells in stratigraphic units of less than optimal porosity and permeability to ensure these zones are not bypassed. |
| Country of Publication | United States |
| Language | English |
| Format | Medium: X; Size: Pages: 570 |
| System Entry Date | 2008 Feb 06 |
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