NORWAY · WELLBORES · NPDID 4541
35/1-1
Exploration · Wildcat · P&A · Dry · Phillips Petroleum Company Norway · PL 269
35/1-1 is a wildcat exploration wellbore in the North Sea, drilled by Phillips Petroleum Company Norway, entered May 28, 2002, to 4,540 m in the Lunde Fm.
- 4,540
- m total depth · 4,540 m vertical
- 408
- m water depth
- May 28, 2002
- entered · completed Jul 18, 2002
- Lunde Fm
- at total depth · Late Triassic
- —
- m of core
- 152
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED JUL 18, 2004
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- DEEPSEA BERGEN decom · Semisub steel
- Drilling days
- 52
- Kelly bushing elevation
- 23 m
- Maximum inclination
- 0°
- Drilling permit
- 1038-L
- Licensing round
- NST2000
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 61.83586° N, 3.07339° E
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
The objectives of drilling the Sturlason 35/1-1 well were to test the hydrocarbon potential of the Jurassic Cook and Statfjord Formations and the Triassic Lunde Formation in the Marflo Ridge structural complex located northeast of the Tampen Spur. The well location was designed to test a significant hydrocarbon column height that would potentially spill into additional fault blocks without leaving commercial reserves up dip. The location should further, if possible, evaluate Paleocene potential without compromising the Mesozoic target.
Operations and results
Exploration well 35/1-1 was spudded with the semi-submersible installation Deepsea Bergen on 28 May 2002 and drilled to TD at 4540 m.
Site survey and gravity coring showed that the shallow geology at the well site consists of soft, silty clay down to 16-18 meters below the seabed. A flat topography is interspersed by frequent pockmarks (seabed depressions). These pockmarks are up to 100 meters in diameter and up to 5 meters deep and are scattered throughout the survey area. The closest pockmark is 50 m south of the 35/1-1 location. Pockmarks are believed to have formed as a result of fluid or gas escape originating in or beneath the soft surface sediments.
The well was drilled with seawater and bentonite sweeps down to 878 m, with KCl brine/Glydril from 878 m to 2245 m, and with Versaport oil based mud from 2245 m to TD No shallow high-pressured water pocket was encountered in the 35/1-1 drilling operation.
No producible hydrocarbons were encountered in the well. The well did not encounter any potential reservoir in the Paleocene interval. All three potential reservoir intervals were evaluated by MWD/LWD log and open hole wire line data. In the 8 1/2" hole section sidewall cores were collected and one run was performed using Schlumbergers Modular Formation Dynamics Tester (MDT) for pressure measurements and fluid sampling. The MDT tool was co
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.
Developers: this page as JSON is GET /v1/data/norway/wells/4541, documented in the API reference.