United Kingdom Oil and Gas Fields: 50th Anniversary Commemorative Volume
Geological Society Memoir 52 records the extraordinary journey of more than 50 years that has led to the development of some 458 oil and gas fields on the UK Continental Shelf (UKCS). It contains papers on almost 150 onshore and offshore fields in all of the UK's main petroliferous basins. These papers range from look-backs on some of the first-developed gas fields in the Southern North Sea, to papers on fields that have only just been brought into production or may still remain undeveloped, and includes two candidate CO2 sequestration projects.
These papers are intended to provide a consistent summary of the exploration, appraisal, development and production history of each field, leading to the current subsurface understanding which is described in greater detail. As such, the Memoir will be an enduring reference source for those exploring for, developing, producing hydrocarbons and sequestering CO2 on the UKCS in the coming decades. It encapsulates the petroleum industry's deep subsurface knowledge accrued over more than 50 years of exploration and production.
The Kraken and Kraken North fields, Block 9/2b, UK North Sea
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Published:October 30, 2020
Abstract
The Kraken and Kraken North fields lie in the UK Continental Shelf Block 9/2b on the East Shetland Platform. Hydrocarbons are stratigraphically trapped within Heimdal Sandstone Member of the Lista Formation. The fields lie at around 3900 ft true vertical; depth subsea and the oil is heavy (13–15°API) and viscous.
The field is developed via a waterflood scheme with long horizontal production and injection wells, alternating across the field. To date, 21 development wells have been drilled, with further wells planned. Reservoir quality is extremely good with porosity around 36% and permeabilities in the range of 2–10 D. The field is produced via the Armada Kraken floating production storage and offloading vessel. Developed stock tank oil originally in place is in the region of 400 MMbbl, with further currently undeveloped resources to the west of the field.
- Atlantic Ocean
- Cenozoic
- clastic rocks
- depositional environment
- development
- East Shetland Basin
- Eocene
- Europe
- history
- hydrocarbons
- lower Eocene
- middle Paleocene
- migration
- North Atlantic
- North Sea
- oil and gas fields
- organic compounds
- Paleocene
- paleochannels
- Paleogene
- permeability
- petroleum
- petroleum exploration
- production
- rates
- reservoir properties
- rock mechanics
- sandstone
- sedimentary rocks
- Selandian
- structural controls
- Tertiary
- Thanetian
- traps
- turbidite
- United Kingdom
- upper Paleocene
- Western Europe
- Ypresian
- Lista Formation
- Kraken Field
- Heimdal Sandstone Member
- Kraken Fault
- Kraken North Field