Generated 02.09.2010
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The NPD's Fact-pages |
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Generated 02.09.2010 |
| NPDID wellbore: | 5439 | |
| Well name: | 7122/7-5 | |
| Drilling operator name: | Eni Norge AS | |
| Geodetic datum: | ED50 | |
| Coordinates: | 71° 16` 24.70`` N | 22° 16` 40.43`` E |
| UTM coordinates: | 7908600.89 N | 545789.79 E |
| UTM zone: | 34 | |
| Drilled in production licence: | 229 | |
| Area: | BARENTS SEA | |
| Drill permit: | 1125-L | |
| Drilling facility: | POLAR PIONEER | |
| Drilling days: | 26 | |
| Wellbore entry date: | 28.11.2006 | |
| Wellbore completion date: | 23.12.2006 | |
| Original wellbore purpose: | WILDCAT | |
| Wellbore purpose: | WILDCAT | |
| Wellbore status: | P&A | |
| Wellbore contents: | DRY | |
| Discovery wellbore: | NO | |
| Seismic location: | inline 1548-crossline 2959(Survey Na01M1 3D) | |
| Kelly bushing elevation (KB) [m]: | 23 | |
| Water depth [m]: | 370 | |
| Total Depth (MD) [m]: | 2228 | |
| Final vertical depth (TVD) [m]: | 2227 | |
| Max inclination [°]: | 2.40 | |
| Bottom hole temperature [°C]: | 59 | |
| Oldest penetrated age: | EARLY TRIASSIC | |
| Oldest penetrated formation: | KLAPPMYSS FM | |
| Note: All depths, except the water depth, are relative to kelly bushing (RKB) | ||
The 7122/7-5 well was drilled as an exploration/appraisal well on the Goliat West Prospect, a downthrown fault compartment compared to the proved hydrocarbon accumulations of Goliat. The purpose of the well was to investigate the hydrocarbon potential of the Early Jurassic/Late Triassic Kap Toscana Group, the Late Triassic Snadd Formation, and the Middle Triassic Kobbe Formation and into the Early Triassic Havert Formation.
Operations and results
Wildcat well 7122/7-5 was spudded with the semi-submersible installation Polar Pioneer on 28 November 2006 and drilled to TD at 2228 m. No significant technical problems were encountered during the operations. The well was drilled with sea water and hi-vis sweeps down to 1060 m. Formate mud previously used for drilling the 7122/7-1, -2, -3 and -4S was used from 1050 m to TD. The re-used formate mud was mixed with fresh formate mud in the proportion ca 1:2.
The top of the Kap Toscana reservoir was found at 1181 m as prognosed. The top Snadd Formation reservoir was encountered at 1281 m, 12 m deeper than the prognosis. The third reservoir, in the Kobbe Formation was found at 1868 m, 4m deeper than the prognosis. A fourth reservoir in the Klappmyss Formation was encountered at 2126 m, 43m deeper than prognosis. The reservoirs were not hydrocarbon bearing. Oil shows were recorded on cuttings and core chips from 1868 to 1910 m in the upper part of the Kobbe Formation; otherwise no shows were reported from the well.
One core was cut from 1900 to 1910.7 m in the Kobbe Formation. No wire line fluid samples were taken.
The well was plugged back to 995 m and abandoned on 23 December as a dry well. It was decided to drill a sidetrack (7122/7-5 A) in order to explore the potential of the Kobbe Formation on the east up thrown side of the fault.
Testing
No drill stem test was performed.
Interval [m]: 1065.00 - 2228.00
Core length [m]: 10.80
| Core number | Interval |
|---|---|
| 1 | 1900-1910.8 |
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 | 441.0 | 36 | 445.0 | |
| SURF.COND. | 13 3/8 | 1015.0 | 17 1/2 | 1060.0 | 1.65 |
| OPEN HOLE | 2228.0 | 12 1/4 | 2228.0 |
| Depth MD [m] | Mud weight [g/cm3] | Visc. [MPa.s] | Yield [pnt Pa.] | Mud type | Date measured |
|---|---|---|---|---|---|
| 445 | 1.03 | SEAWATER | |||
| 893 | 1.03 | SEAWATER | |||
| 1060 | 1.03 | SEAWATER | |||
| 1060 | 1.17 | 8.0 | NACL | ||
| 1060 | 1.17 | 8.0 | NACL | ||
| 1070 | 1.25 | 13.0 | NACL | ||
| 1475 | 1.25 | 12.0 | FORMPRO | ||
| 1900 | 1.30 | 12.0 | FORMPRO | ||
| 2111 | 1.30 | 13.0 | FORMPRO | ||
| 2228 | 1.32 | 13.0 | FORMPRO |
No drill stem test in this wellbore.
| Log type | Intervals logged [m] |
|---|---|
| MWD - GR RES DIR PRESSURE | 394 - 445 |
| MWD - GR RES SON DIR PRESSURE | 445 - 1060 |
| MWD - GR RES DIR PRESSURE | 445 - 2222 |
| MRLA TLD CNL GR ACTS | 1015 - 2224 |
| MDT GR MSIP ACTS | 1015 - 2224 |
| Top depth [m] | Litostratigraphic unit |
|---|---|
| 394 | NORDLAND GP |
| 643 | NYGRUNNEN GP |
| 643 | KVITING FM |
| 655 | ADVENTDALEN GP |
| 655 | KOLMULE FM |
| 961 | KOLJE FM |
| 998 | KNURR FM |
| 1083 | HEKKINGEN FM |
| 1168 | FUGLEN FM |
| 1181 | KAPP TOSCANA GP |
| 1181 | FRUHOLMEN FM |
| 1281 | SNADD FM |
| 1868 | SASSENDALEN GP |
| 1868 | KOBBE FM |
| 2126 | KLAPPMYSS 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.
