Generated 10.02.2012
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Generated 10.02.2012 |
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| NPDID wellbore: | 376 | |
| Well name: | 30/3-1 | |
| Drilling operator name: | Den norske stats oljeselskap a.s | |
| Geodetic datum: | ED50 | |
| Coordinates: | 60° 54` 15.35`` N | 2° 40` 11.71`` E |
| UTM coordinates: | 6752328.84 N | 482092.77 E |
| UTM zone: | 31 | |
| Drilled in production licence: | 052 | |
| Area: | NORTH SEA | |
| Discovery: | 30/2-1 HULDRA | |
| Field: | HULDRA | |
| Drill permit: | 215-L | |
| Drilling facility: | NORSKALD | |
| Drilling days: | 89 | |
| Wellbore entry date: | 11.06.1979 | |
| Wellbore completion date: | 07.09.1979 | |
| Original wellbore purpose: | WILDCAT | |
| Wellbore purpose: | APPRAISAL | |
| Wellbore status: | SUSP.REENTERED LATER | |
| Wellbore contents: | SHOWS | |
| Discovery wellbore: | NO | |
| Seismic location: | 702 166 SP. 790 | |
| Kelly bushing elevation (KB) [m]: | 25 | |
| Water depth [m]: | 138 | |
| Total Depth (MD) [m]: | 3718 | |
| Final vertical depth (TVD) [m]: | 3716 | |
| Max inclination [°]: | 2.00 | |
| Bottom hole temperature [°C]: | 99 | |
| Oldest penetrated age: | EARLY CRETACEOUS | |
| Oldest penetrated formation: | ÅSGARD FM | |
| Note: All depths, except the water depth, are relative to kelly bushing (RKB) | ||
General
Well 30/3-1 is located just north of the Huldra Discovery. It was planned to be drilled in two phases and the primary objective was to test sandstones of the Brent Group. Secondary objectives were sandstones in the Paleocene and in the Lower Jurassic, Cook and Statfjord formations.
Operations and results
Well 30/3-1, Phase I was spudded with the semi-submersible installation Nordskald and drilled to 3718 m in claystone and marls of the Early Cretaceous Cromer Knoll Group. Phase I was drilled without serious problems but the 12 1/4" hole section had to be cut shorter than originally planned due to lost circulation and possibly higher pore pressures than prognosed. The mud gas readings were relatively high through the 17 1/2" section causing long periods of circulation. The well was drilled with seawater and hi-vis pills down to 212 m, with a gel mud from 212 m to 985 m, and with a Spersene XP 20/Magcogel/nut plug mud from 985 m to TD.
The Paleocene did not contain good reservoirs. Shows and live oil in the mud were however recorded in predominant claystone lithology from 1910 m to 2470 m. No conventional cores were cut and no fluid samples taken.
The well was suspended on 7 September as a dry hole after the 9 5/8" casing was run. The plan was to re-enter the well later, using a rig equipped with a 15000 psi BOP stack and drill through the Jurassic sandstones.
Testing
No drill stem test was performed
Interval [m]: 220.00 - 4421.50
No cores in this wellbore.
No scanned core photos available
No oil samples available.
| Type | Casing diam. [inch] | Depth below KB [m] | Hole diam. [inch] | Hole depth below KB [m] | Lot mud eqv. [g/cm3] |
|---|---|---|---|---|---|
| CONDUCTOR | 30 | 212.0 | 36 | 212.0 | |
| SURF.COND. | 20 | 985.0 | 26 | 999.0 | 1.38 |
| LINER | 16 | 1804.0 | 19 1/2 | 1804.0 | 1.52 |
| INTERM. | 13 3/8 | 2423.0 | 17 1/2 | 2430.0 | 1.96 |
| INTERM. | 9 5/8 | 3718.0 | 12 1/4 | 3718.0 |
| Depth MD [m] | Mud weight [g/cm3] | Visc. [MPa.s] | Yield [pnt Pa.] | Mud type | Date measured |
|---|---|---|---|---|---|
| 212 | 1.01 | 54.0 | 12.0 | seawater | |
| 987 | 1.10 | 55.0 | 9.0 | seawater | |
| 2468 | 1.66 | 56.0 | 14.0 | seawater | |
| 2787 | 1.85 | 60.0 | 15.0 | seawater | |
| 3709 | 1.85 | 67.0 | 16.0 | seawater |
No drill stem test in this wellbore.
| Log type | Intervals logged [m] |
|---|---|
| ISF SON GR SP | 160 - 3714 |
| FDC CNL GR CAL | 212 - 1802 |
| FDC CNL GR CAL | 2418 - 3714 |
| DLL MSFL GR | 3125 - 3713 |
| CBL | 521 - 2419 |
| CNL | 2000 - 2175 |
| VEL | 410 - 3710 |
| Top depth [m] | Litostratigraphic unit |
|---|---|
| 163 | NORDLAND GP |
| 826 | UTSIRA FM |
| 950 | HORDALAND GP |
| 1174 | SKADE FM |
| 1360 | NO FORMAL NAME |
| 1661 | GRID FM |
| 1682 | NO FORMAL NAME |
| 1930 | ROGALAND GP |
| 1930 | BALDER FM |
| 1995 | SELE FM |
| 2016 | LISTA FM |
| 2124 | VÅLE FM |
| 2160 | SHETLAND GP |
| 2160 | JORSALFARE FM |
| 2472 | KYRRE FM |
| 3410 | TRYGGVASON FM |
| 3605 | BLODØKS FM |
| 3616 | CROMER KNOLL GP |
| 3616 | RØDBY FM |
| 3637 | SOLA FM |
| 3673 | ÅSGARD FM |
No composite log presently available.
| Geochemical_evaluation_of_the_Statoil_30_3_1_well | (Format:PDF. Size: 0.578 Mb ) |
| Phase_I_Organic_geochemistry_results_from_well_30_3_1 | (Format:PDF. Size: 1.236 Mb ) |
| File 3 | (Format:PDF. Size: 0.791 Mb ) |
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| Completion_Report | (Format:PDF. Size: 36.214 Mb ) |
| Completion_Report_Appendix | (Format:PDF. Size: 5.075 Mb ) |
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| WDSS_General_Information | (Format:PDF. Size: 0.108 Mb ) |
| WDSS_completion_log | (Format:PDF. Size: 0.204 Mb ) |
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You need an ACROBAT reader from ADOBE to display the reports in pdf format. |
