NORWAY · LITHOSTRATIGRAPHY · FORMATION
Rattray Fm
Part of the Fladen Gp
Rattray Fm is a formation of the Fladen Gp on the Norwegian shelf. 1 wellbore has a top filed in it, at a median of 4,162 m along the wellbore.
- 1
- wellbores with a top
- 4,162
- m median top · 4,162 to 4,162 for the middle 80%
- 0
- wellbores cored in it
- 0
- m of core
SODIR FACTPAGES · DEPTHS ALONG THE WELLBORE · NORTH SEA 1
Every wellbore with a top in Rattray Fm →
Latest wellbores to meet it
BY ENTRY DATE
| Wellbore | Top, m | Base, m | Operator | Field | Entered |
|---|---|---|---|---|---|
| 15/8-1 | 4,162 | 4,300 | Den norske stats oljeselskap a.s | Utgard | Jul 18, 1981 |
Description
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
Name From Rattray Head on the coast of Scotland adjacent to the volcanic province.
Well type section UK well 21/10-1 (BP) (Fig 1.23-26)ure from 2680 m (8792 ft) to 3422.3 m (11228 ft) below KB.
Well reference section None at present but Howitt and others (1975, (Fig 1.1-2). illustrate the nature of the formation in wells adjacent to the type well.
Thickness 742.3 m (2436 ft) in the type well but the base of the formation was not reached.
Lithology In the type section and adjacent wells (BP 21/9-1 and Shell/Esso 22/6-1), the formation consists of a thick series of basaltic lava flows (1 to 9 m thick where cored), with interbedded agglomerates, tuffs and tuffaceous sediments. The lavas are grey or purplish, vesicular and often partially altered, and locally completely laterised. Large fresh pyroxene phenocrysts and smaller altered olivine phenocrysts are set in a groundmass of pyroxene and feldspar. Autobrecciation, late hydrothermal activity and deep weathering and oxidation are fairly common. The epiclastics, ranging from agglomerate to tuffs, comprise lava and phenocryst clasts, or primary pumice and ? lapilli fragments. Only minor pyroclastics have been recognised. Interbedded sediments are present towards the base
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About this data
Norwegian Offshore Directorate (Sodir) FactPages, mirrored nightly and used under the Norwegian Licence for Open Government Data (NLOD). Tops and cored lengths are the Directorate's, per wellbore and unit; the percentiles are computed from those tops and are depths along the wellbore, not true vertical depth.
Developers: this page as JSON is GET /v1/data/norway/formations/rattray-fm, documented in the API reference.