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Generated 11.02.2012 |
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| NPDID wellbore: | 5192 | |
| Well name: | 1/2-2 | |
| Drilling operator name: | Paladin Resources Norge AS | |
| Geodetic datum: | ED50 | |
| Coordinates: | 56° 59` 32.00`` N | 2° 29` 47.66`` E |
| UTM coordinates: | 6316774.33 N | 469410.10 E |
| UTM zone: | 31 | |
| Drilled in production licence: | 143-CS | |
| Area: | NORTH SEA | |
| Drill permit: | 1103-L | |
| Drilling facility: | MÆRSK GIANT | |
| Drilling days: | 51 | |
| Wellbore entry date: | 14.12.2005 | |
| Wellbore completion date: | 02.02.2006 | |
| Original wellbore purpose: | WILDCAT | |
| Wellbore purpose: | WILDCAT | |
| Wellbore status: | P&A | |
| Wellbore contents: | OIL SHOWS | |
| Discovery wellbore: | NO | |
| Seismic location: | inline 7429-trace 4824 Survey PGS CGMNOR | |
| Kelly bushing elevation (KB) [m]: | 40 | |
| Water depth [m]: | 74 | |
| Total Depth (MD) [m]: | 3434 | |
| Final vertical depth (TVD) [m]: | 3432 | |
| Max inclination [°]: | 4.90 | |
| Bottom hole temperature [°C]: | 138 | |
| Oldest penetrated age: | PALEOCENE | |
| Oldest penetrated formation: | EKOFISK FM | |
| Note: All depths, except the water depth, are relative to kelly bushing (RKB) | ||
The 1/2-2 well was drilled to evaluate the prospect named Hummer, located in the Central Graben in the North Sea ca 4.5 km east of the UK border. The prospect was a relatively simple four-way dip closure structure, with the primary target being the Palaeocene Forties Sandstone Member of the Sele Formation. There was a secondary target in the underlying Mey Sandstone Member of the Lista Formation. The Hummer prospect was located between several proven hydrocarbon accumulations in the Forties Sandstone, including the Blane oil discovery in PL 143BS, approximately 11 km to the south, the 7/11-3 gas condensate discovery on the flank of the Cod Field, 5 km to the North, and the Olselvar gas condensate discovery 12 km to the east in Block 1/3.
Operations and results
Well 1/2-2 was spudded with the jack-up installation Mærsk Giant on 14 December 2005 and drilled to TD at 3434 m in the Paleocene Ekofisk Formation. There were no serious technical problems in the operations, but due mainly to hole problems and WOW the well was completed ca 15 days after schedule. The well was drilled with seawater and pre-hydrated bentonite sweeps down to703 m, with Performadrill KCl mud from 703 m to 1507 m, and with Enviromul oil based mud from 1507 m to TD.
A Forties reservoir was penetrated at 3135 m, +3m low from the prognosis. No hydrocarbons were encountered, but oil shows were recorded in the upper part of the Forties Formation and in a sandstone stringer further down in the Lista Formation.
A 46 m core (4") was cut in the Forties sandstone Member, from 3141.5 m to 3187.5 m. The core recovery was 98% (44.9 m). Wire line logging was according to dry hole case with no wire line fluid samples taken.
The well was permanently abandoned on 2 February 2006 as a dry well.
Testing
No drill stem test was performed.
Interval [m]: 200.00 - 3434.00
Core length [m]: 44.90
| Core number | Interval |
|---|---|
| 1 | 3141.5-3186.4 |
No scanned core photos available
No palynological slides in this wellbore.
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 | 173.0 | 36 | 176.0 | |
| SURF.COND. | 20 | 697.0 | 24 | 703.0 | 1.61 |
| INTERM. | 13 3/8 | 1497.0 | 17 1/2 | 1507.0 | 1.81 |
| OPEN HOLE | 3434.0 | 8 1/2 | 3434.0 |
| Depth MD [m] | Mud weight [g/cm3] | Visc. [MPa.s] | Yield [pnt Pa.] | Mud type | Date measured |
|---|---|---|---|---|---|
| 130 | 1.55 | 88.0 | OIL BASED | ||
| 176 | 1.50 | WATER BASED | |||
| 466 | 1.12 | 31.0 | WATER BASED | ||
| 703 | 1.14 | WATER BASED | |||
| 1377 | 1.55 | 88.0 | OIL BASED | ||
| 1492 | 1.55 | 85.0 | WATER BASED | ||
| 1707 | 1.54 | OIL BASED | |||
| 2838 | 1.54 | OIL BASED | |||
| 2960 | 1.58 | 85.0 | OIL BASED | ||
| 3434 | 1.58 | 76.0 | OIL BASED |
No drill stem test in this wellbore.
| Log type | Intervals logged [m] |
|---|---|
| MWD LWD - DGR EWR P4 DIR PWD | 176 - 3434 |
| AIT DSI PEX NGT | 1496 - 3415 |
| CHECKSHOT | 624 - 3380 |
| Top depth [m] | Litostratigraphic unit |
|---|---|
| 114 | NORDLAND GP |
| 1675 | HORDALAND GP |
| 3077 | ROGALAND GP |
| 3077 | BALDER FM |
| 3094 | SELE FM |
| 3135 | FORTIES FM |
| 3296 | LISTA FM |
| 3368 | MAUREEN FM |
| 3418 | SHETLAND GP |
| 3418 | EKOFISK FM |
No composite log presently available.
No geochemical data presently available. Regional geochemical studies which include data from this well may however be filed on a different well.
No documents presently available.
