Generated 11.02.2012
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Generated 11.02.2012 |
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| NPDID wellbore: | 4301 | |
| Well name: | 34/7-31 | |
| Drilling operator name: | Norsk Hydro Produksjon AS | |
| Geodetic datum: | ED50 | |
| Coordinates: | 61° 18` 37.51`` N | 2° 3` 59.80`` E |
| UTM coordinates: | 6797883.12 N | 450008.95 E |
| UTM zone: | 31 | |
| Drilled in production licence: | 089 | |
| Area: | NORTH SEA | |
| Discovery: | 34/7-23 S | |
| Field: | VIGDIS | |
| Drill permit: | 1002-L | |
| Drilling facility: | SCARABEO 6 | |
| Drilling days: | 13 | |
| Wellbore entry date: | 13.04.2001 | |
| Wellbore completion date: | 25.04.2001 | |
| Original wellbore purpose: | APPRAISAL | |
| Wellbore purpose: | APPRAISAL | |
| Wellbore status: | P&A | |
| Wellbore contents: | OIL | |
| Discovery wellbore: | NO | |
| Formation/age with hydrocarbons 1: | INTRA DRAUPNE FM SS / LATE JURASSIC | |
| Seismic location: | SG9701& inline 1800/6456 | |
| Kelly bushing elevation (KB) [m]: | 26 | |
| Water depth [m]: | 207 | |
| Total Depth (MD) [m]: | 3454 | |
| Final vertical depth (TVD) [m]: | 2355 | |
| Max inclination [°]: | 131.00 | |
| Bottom hole temperature [°C]: | 89 | |
| Oldest penetrated age: | MIDDLE JURASSIC | |
| Oldest penetrated formation: | HEATHER FM | |
| Note: All depths, except the water depth, are relative to kelly bushing (RKB) | ||
General
Well 34/7-31 A is a sidetrack to 34/7-31, which found a ca 35 m net column of oil in Intra-Draupne Formation Sandstone. The sidetrack was drilled to map the extent of HC-filled Intra Draupne Formation.
Operations and results
Appraisal well 34/7-31 A was kicked off at 1788 m, just below the 13 3/8" casing in well 34/7-31 on 15 April 2001. The semi-submersible installation Scarabeo 6 was used for the operations. The deviation angle increased throughout the well bore to ca 130 deg at TD, and was between 80 to 90 deg through the Intra-Draupne Formation Sandstone. Only MWD logs are available from the well, no wire line logging was performed. The well was drilled with oil-based mud (Versavert) from kick-off to TD.
The well penetrated 260 m MD of oil-filled Intra-Draupne Formation Sandstone. After that ca 15 m of Draupne Formation shale and 281 m of Heather Formation was penetrated before the younger Cromer Knoll Group was encountered. The eastern development of the Intra Draupne Formation Sandstone was thus mapped practically in-well.
There are no cores from this well bore. No fluid samples were taken.
The well was permanently plugged and abandoned on 25 April 2001as an oil appraisal.
Testing
No drill stem test was performed
Interval [m]: 1800.00 - 3450.00
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 | 1779.0 | 12 1/4 | 1779.0 | 1.82 | |
| OPEN HOLE | 3454.0 | 9 5/8 | 3454.0 |
| Depth MD [m] | Mud weight [g/cm3] | Visc. [MPa.s] | Yield [pnt Pa.] | Mud type | Date measured |
|---|---|---|---|---|---|
| 1650 | 1.51 | 42.0 | OIL BASED | ||
| 1788 | 1.50 | 38.0 | OIL BASED | ||
| 2304 | 1.50 | 40.0 | OIL BASED | ||
| 3022 | 1.50 | 41.0 | OIL BASED | ||
| 3089 | 1.50 | 44.0 | OIL BASED | ||
| 3454 | OIL BASED |
No drill stem test in this wellbore.
| Log type | Intervals logged [m] |
|---|---|
| MWD - VISION ADT | 1788 - 3454 |
| Top depth [m] | Litostratigraphic unit |
|---|---|
| 233 | NORDLAND GP |
| 924 | UTSIRA FM |
| 1062 | HORDALAND GP |
| 1268 | NO FORMAL NAME |
| 1301 | NO FORMAL NAME |
| 1470 | NO FORMAL NAME |
| 1482 | NO FORMAL NAME |
| 1700 | ROGALAND GP |
| 1700 | BALDER FM |
| 1738 | LISTA FM |
| 1892 | SHETLAND GP |
| 1892 | JORSALFARE FM |
| 2175 | KYRRE FM |
| 2815 | CROMER KNOLL GP |
| 2815 | RØDBY FM |
| 2820 | MIME FM |
| 2830 | VIKING GP |
| 2830 | INTRA DRAUPNE FM SS |
| 3090 | DRAUPNE FM |
| 3105 | HEATHER FM |
| 3386 | CROMER KNOLL GP |
| 3386 | MIME FM |
| 3393 | RØDBY FM |
| 3395 | SHETLAND GP |
| 3395 | KYRRE 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.
