Generated 11.02.2012
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Generated 11.02.2012 |
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| NPDID wellbore: | 6080 | |
| Well name: | 34/7-34 | |
| Drilling operator name: | StatoilHydro ASA | |
| Geodetic datum: | ED50 | |
| Coordinates: | 61° 23` 22.40`` N | 2° 8` 32.30`` E |
| UTM coordinates: | 6806642.39 N | 454178.68 E |
| UTM zone: | 31 | |
| Drilled in production licence: | 089 | |
| Area: | NORTH SEA | |
| Discovery: | 34/7-34 | |
| Field: | VIGDIS | |
| Drill permit: | 1236-L | |
| Drilling facility: | BORGLAND DOLPHIN | |
| Drilling days: | 11 | |
| Wellbore entry date: | 10.03.2009 | |
| Wellbore completion date: | 20.03.2009 | |
| Original wellbore purpose: | APPRAISAL | |
| Wellbore purpose: | APPRAISAL | |
| Wellbore status: | P&A | |
| Wellbore contents: | OIL | |
| Discovery wellbore: | NO | |
| Formation/age with hydrocarbons 1: | STATFJORD FM / EARLY JURASSIC | |
| Seismic location: | inline3210 & crossline 5806(3D survey SG9701STR05 PSDM) | |
| Kelly bushing elevation (KB) [m]: | 31 | |
| Water depth [m]: | 292 | |
| Total Depth (MD) [m]: | 3022 | |
| Final vertical depth (TVD) [m]: | 2733 | |
| Max inclination [°]: | 65.30 | |
| Bottom hole temperature [°C]: | ||
| Oldest penetrated age: | LATE TRIASSIC | |
| Oldest penetrated formation: | LUNDE FM | |
| Note: All depths, except the water depth, are relative to kelly bushing (RKB) | ||
General
Well 34/7-34 A is a sidetrack on 34/7-34, drilled on theVigdis Nord&st prospect located centrally in Block 34/7 on the Tampen Spur in the northern North Sea. As an oil down to situation was encountered in the main well bore, the sidetrack was drilled to determine the OWC.
Operations and results
Appraisal well 34/7-34 A kicked off from cement plug number 3 at 2120 m in main well 34/7-34 on 10 March 2009. It was drilled deviated downflank on the structure to TD at 3022 m (2733 m TVD) in the Late Triassic Lunde Formation. No significant technical problems occurred in the operations. The well was drilled with Low ECD oil based mud from kick-off to TD.
In the sidetrack the pressure points obtained indicated an oil gradient which is the same as in the main bore and a water gradient of 1.03 g/cm3. Due to the poor quality of some of the pressure measurements obtained in the water zone, there is uncertainty in the free water level and the best estimate based on the pressure points is approximately 2631 m (2600 m TVD MSL).
No cores were cut and no wire line fluid samples were taken.
The well was permanently abandoned on 20 March 2009 as an oil appraisal.
Testing
No drill stem test was performed.
Interval [m]: 2130.00 - 3022.00
No cores in this wellbore.
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] |
|---|---|---|---|---|---|
| OPEN HOLE | 3022.0 | 8 1/2 | 3022.0 |
| Depth MD [m] | Mud weight [g/cm3] | Visc. [MPa.s] | Yield [pnt Pa.] | Mud type | Date measured |
|---|---|---|---|---|---|
| 400 | 1.51 | 18.0 | OBM-Low ECD | ||
| 1695 | 1.62 | 19.0 | OBM-Low ECD | ||
| 2455 | 1.62 | 19.0 | OBM-Low ECD | ||
| 2661 | 1.62 | 18.0 | OBM-Low ECD | ||
| 2661 | 1.62 | 20.0 | OBM-Low ECD | ||
| 2999 | 1.62 | 22.0 | OBM-Low ECD | ||
| 3022 | 1.62 | 18.0 | OBM-Low ECD |
No drill stem test in this wellbore.
| Log type | Intervals logged [m] |
|---|---|
| MWD - POWERPULSE | 323 - 385 |
| MWD - ARCVRES9 POWERPULSE | 386 - 1189 |
| MWD - ARCVRES8 POWERPULSE | 1189 - 2111 |
| MWD - ECO & TELE & STETHOSCOPE | 2120 - 3022 |
| Top depth [m] | Litostratigraphic unit |
|---|---|
| 323 | NORDLAND GP |
| 986 | UTSIRA FM |
| 1108 | HORDALAND GP |
| 1680 | ROGALAND GP |
| 1680 | BALDER FM |
| 1719 | LISTA FM |
| 1860 | SHETLAND GP |
| 2365 | DUNLIN GP |
| 2365 | AMUNDSEN FM |
| 2639 | NO GROUP DEFINED |
| 2639 | STATFJORD FM |
| 2972 | HEGRE GP |
| 2972 | LUNDE FM |
No composite log presently available.
| 34_7_34A_gch_transfer_1 | (Format:TXT. Size: 0.000 Mb ) |
| 34_7_34A_gch_results_1 | (Format:TXT. Size: 0.033 Mb ) |
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