NORWAY · WELLBORES · NPDID 3719
35/10-3
Exploration · Wildcat · P&A · Dry · Den norske stats oljeselskap a.s · PL 173
35/10-3 is a wildcat exploration wellbore in the North Sea, drilled by Den norske stats oljeselskap a.s, entered Jun 23, 1999, to 2,250 m in the Jorsalfare Fm.
- 2,250
- m total depth · 2,247 m vertical
- 363
- m water depth
- Jun 23, 1999
- entered · completed Jul 14, 1999
- Jorsalfare Fm
- at total depth · Late Cretaceous
- —
- m of core
- 65
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED FEB 20, 2026 · RELEASED JUL 14, 2001
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- TRANSOCEAN ARCTIC · Semisub steel
- Drilling days
- 22
- Kelly bushing elevation
- 24 m
- Maximum inclination
- 4.4000001°
- Drilling permit
- 950-L
- Licensing round
- 13
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 61.04666° N, 3.12784° E
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Production License 173, block 35/10, is located north-northwest of the Troll, approximately 80 km off-shore Western Norway. Well 35/10-3 is the third well drilled within the PL 173 licence area. The objective of the well was to test the hydrocarbon potential of Paleocene deep marine sandstones (Hermod Formation) of the Sele Formation in the southern part of block 35/10, known as the the Graben Fill prospect. The reservoir was expected to consist of two deep marine fans, stacked on each other.
Operations and results
Wildcat well 35/10-3 was spudded 23 June 1999 with the semi-submersible installation "Transocean Arctic". First attempt to spud failed due to boulders at 427 m. The installation was moved 20 m and after a successful second spud it was drilled to a total depth of 2250 m in the Late Cretaceous Jorsalfare Formation. The well was drilled with bentonite/PAC down to 655 m and KCl polymer mud (Ultidrill) from 655 m to TD. No shallow gas was encountered. A class 2 warning (over-pressured shallow gas) was given for a sand layer prognosed at 675 m. The Hermod Formation was penetrated at 1948 m and consisted of 35 m sandstone, as prognosed. The sandstone was water filled. Weak direct fluorescence and a few grams with cut fluorescence and increase in heavy components in the background gas was described. The prognosed lower fan proved to consist of claystone. No conventional cores were cut and no fluid samples were taken.
The well was permanently plugged and abandoned as a dry well on 14 July 1999.
Testing
No drill stem test was performed
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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