NORWAY · WELLBORES · NPDID 7579
6305/8-2
Exploration · Appraisal · P&A · Gas · A/S Norske Shell · Ormen Lange · PL 250
6305/8-2 is an appraisal exploration wellbore in the Norwegian Sea, drilled by A/S Norske Shell, entered Sep 24, 2014, to 3,078 m in the Springar Fm.
Discovery 6305/5-1 Ormen lange · On the map →
- 3,078
- m total depth · 3,078 m vertical
- 616
- m water depth
- Sep 24, 2014
- entered · completed Nov 21, 2014
- Springar Fm
- at total depth · Late Cretaceous
- 95.8
- m of core in 4 cores
- —
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED SEP 25, 2026 · RELEASED NOV 21, 2016
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- TRANSOCEAN BARENTS · Semisub steel
- Drilling days
- 59
- Kelly bushing elevation
- 40 m
- Maximum inclination
- 2.79999995°
- Drilling permit
- 1542-L
- Licensing round
- Awarded additionally to round 15
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 63.32835° N, 5.36019° E
- Hydrocarbons in
- Egga Fm (informal) · Paleocene
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 6305/8-2 was drilled to appraise the southern part of the Ormen Lange Field in the Sothern Norwegian Sea. The objective of well 6305/8-2 was to delineate the field to the south, as it was unclear whether the area was optimally drained or not by existing production wells.
Operations and results
Appraisal well 6305/8-2 was spudded with the semi-submersible installation Transocean Barents on 24 September 2014 and drilled to TD at 3078 m in the Late Cretaceous Springar Formation. No significant problem was encountered in the operations. The well was drilled with seawater and bentonite sweeps down to 1499 m, with KCl/polymer/glycol mud from 1499 m to 2897 m, and with Innovert NS oil based mud from 2897 m to TD.
Top of the Egga Informal Formation Reservoir was encountered at 2906.5 m 23.5 m deeper than prognosed. Below Egga from 3005 to 3015 m an undifferentiated unit was penetrated before entering the Maastrichtian age Jorsalfare Formation. The Egga contained a 28-metre gas column down to a current GDT at 2936.0 m, and an underlying water zone with very good reservoir quality. The water zone in the lower part of Egga has extreme core permeabilities in the several Darcy range, often exceeding five Darcy. Below the GDT, the interpretation indicated a swept zone down to ca 2950 m followed by a residual gas zone down to ca 2969 m. All sands are fully water bearing below this depth. Both the undifferentiated unit and the Jorsalfare Formation were aquiferous with very good and poor to very good reservoir quality, respectively. The water zone is 70 metres in total. Wireline pressure measurements show depletion due to production in the D-template area. Pressure depletion relative to the closest exploration well 6305/7-1 vary from a h
Around this wellbore
This wellbore on Sodir FactPages → · Press release →
About this data
Norwegian Offshore Directorate (Sodir) FactPages, mirrored nightly and used under the Norwegian Licence for Open Government Data (NLOD). Depths are metres along the wellbore from the kelly bushing unless a row gives its own unit; older cores are filed in feet. A zero the Directorate files for an unmeasured pressure, density, or temperature is shown as a dash.
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