30/11-10 A

Exploration · Appraisal · P&A · Oil · Statoil Petroleum AS · Munin · PL 035

30/11-10 A is an appraisal exploration wellbore in the North Sea, drilled by Statoil Petroleum AS, entered Dec 28, 2014, to 3,948 m in the Ness Fm.

Discovery 30/11-8 S Munin · On the map →

3,948: m total depth · 3,696 m vertical
104: m water depth
Dec 28, 2014: entered · completed Feb 13, 2015
Ness Fm: at total depth · Middle Jurassic
—: m of core
129: °C bottom-hole temperature

SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED FEB 13, 2017

On file for this wellbore

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

Drilling

Drilling facility: TRANSOCEAN LEADER · Semisub steel
Drilling days: 45
Kelly bushing elevation: 23.5 m
Maximum inclination: 44.40000153°
Drilling permit: 1549-L
Licensing round: 2-A
Plugged and abandoned: Feb 13, 2015
Core samples available: Yes
Cuttings samples available: Yes
Position · ED50: 60.23452° N, 2.51032° E
Hydrocarbons in: Tarbert Fm · Middle Jurassic

Well history

WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE

General

Well 30/11-10 A was drilled as a geological sidetrack to 30/11-10 in order to appraise the Krafla discovery made by well 30/11-8 S in 2011. Krafla is located south of and close to the Krafla North discovery made by the 30/11-10 well, on the edge of the Horda Platform towards the Viking Graben. The primary objective was to reduce uncertainty in oil-in-place in Krafla and to verify communication with Krafla North. Secondary objective was to obtain high-quality fluid samples from Krafla Tarbert Formation.

Operations and results

Wildcat well 30/11-10 A was kicked off from 2001 m in 30/11-10 on 28 December 2014. It was drilled with the semi-submersible installation Transocean Leader to TD at 3948 m (3696 m TVD) m in the Middle Jurassic Ness Formation. On 10 January 2015, at 3777 m in the 8 1/2" section, drilling was discontinued for 12 days due to damaged top drive and bad weather. Otherwise, no significant problem was encountered in the operations. The well was drilled with XP-07 oil based mud from kick-off to TD.

Top Brent Group, Tarbert Formation was penetrated at 3610 m (3359.2 m TVD). Hydrocarbons were proven in the Tarbert Formation from 3654 m (3403 m TVD) with a main oil bearing sandstone between 3717 to 3731 m (3466 to 3480 m TVD). Pressure points and logs indicate an OWC around 3753 m (3502 m TVD). Shows were described in Tarbert and Ness formations.

No cores were cut in the well. Pressures in Tarbert Formation are close to those seen in 30/11-10 Krafla North, but variable pressure measurements in Krafla North did not provide reliable gradients so communication within Tarbert between Krafla and Krafla North cannot be concluded. Pressures within the Ness Formation does

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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