6406/3-8

Exploration · Wildcat · P&A · Oil · Wintershall Norge ASA · Maria · PL 475 BS

6406/3-8 is a wildcat exploration wellbore in the Norwegian Sea, drilled by Wintershall Norge ASA, entered May 16, 2010, to 4,216 m in the Tilje Fm.

Discovery 6406/3-8 Maria · On the map →

4,216: m total depth · 4,138 m vertical
303: m water depth
May 16, 2010: entered · completed Aug 10, 2010
Tilje Fm: at total depth · Early Jurassic
83.5: m of core in 2 cores
—: °C bottom-hole temperature

SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED AUG 10, 2012

On file for this wellbore

What the Directorate holds from this wellbore. Each opens the section that lists it.

Drilling

Drilling facility: SONGA DELTA · Semisub steel
Drilling days: 87
Kelly bushing elevation: 29 m
Maximum inclination: 21.60000038°
Drilling permit: 1303-L
Licensing round: TFO2008
Plugged and abandoned: —
Core samples available: Yes
Cuttings samples available: Yes
Position · ED50: 64.93592° N, 6.94262° E
Hydrocarbons in: Garn Fm · Middle Jurassic

Well history

WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE

General

Well 6406/3-8 was drilled on the Maria prospect located is located in the Haltenbanken area, offshore Mid Norway. The prospect area is surrounded by producing fields and discoveries; Kristin (W), Smørbukk Sør (NW), Smørbukk (NW), Heidrun (N), Midgard (E), Tyrihans (SE) and Trestakk (SW). The primary objective was to confirm petroleum in the Middle Jurassic Garn Formation, with the deeper Ile and Tilje formations as secondary objectives. Also the Cretaceous Lysing Formation was seen at potentially hydrocarbon bearing.

Operations and results

Wildcat well 6406/3-8 was drilled with the semi-submersible installation Songa Delta. The well was spudded on three different locations with a 9 7/8" pilot hole assembly, due to shallow gas zones at 569 m, 620 m, and 670 m. The third pilot hole was drilled to revised 20" setting depth, at 545 m. Technical problems with lost circulation in the 14 3/4"x 17 1/2" hole led to a sidetrack at 1727 m (6406/3-8 T2) from the 16" liner shoe around the problem section, and back to the planned trajectory towards the end of the 12 1/4" section. This gave significant deviation from the vertical trajectory. The well was drilled to 4216 m (4138 m TVD) in the Early Jurassic Tilje Formation. The well was drilled with sea water down to 541 m and with Carbo-Sea oil based mud from 541 m to TD.

The Lysing Formation was found tight and water bearing. Clear hydrocarbon shows and increased gas values were observed when penetrating the Middle Jurassic Garn Formation at 3841 m (3771 m TVD). Based on log and pressure data an OWC was established at 3907 m (3837 m TVD) giving an oil column of 66 m TVD in the well. No gas cap was observed. Two parallel oil gradients of 0.66 g/cc with a separ

Around this wellbore

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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). 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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