Generated 11.02.2012
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Generated 11.02.2012 |
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| NPDID wellbore: | 3703 | |
| Well name: | 9/2-9 | |
| Drilling operator name: | Den norske stats oljeselskap a.s | |
| Geodetic datum: | ED50 | |
| Coordinates: | 57° 45` 15.19`` N | 4° 21` 20.58`` E |
| UTM coordinates: | 6402299.56 N | 580684.43 E |
| UTM zone: | 31 | |
| Drilled in production licence: | 114 | |
| Area: | NORTH SEA | |
| Discovery: | 9/2-9 S | |
| Field: | YME | |
| Drill permit: | 948-L | |
| Drilling facility: | BYFORD DOLPHIN | |
| Drilling days: | 112 | |
| Wellbore entry date: | 29.06.1999 | |
| Wellbore completion date: | 18.10.1999 | |
| Original wellbore purpose: | WILDCAT | |
| Wellbore purpose: | WILDCAT | |
| Wellbore status: | RE-CLASS TO DEV (9/2-B-4 H) | |
| Wellbore contents: | OIL | |
| Discovery wellbore: | YES | |
| Formation/age with hydrocarbons 1: | SANDNES FM / MIDDLE JURASSIC | |
| Seismic location: | ST 9413- INLINE 646 & X-LINE 646 | |
| Kelly bushing elevation (KB) [m]: | 25 | |
| Water depth [m]: | 77 | |
| Total Depth (MD) [m]: | 4367 | |
| Final vertical depth (TVD) [m]: | 3386 | |
| Max inclination [°]: | ||
| Bottom hole temperature [°C]: | ||
| Oldest penetrated age: | MIDDLE JURASSIC | |
| Oldest penetrated formation: | BRYNE FM | |
| Note: All depths, except the water depth, are relative to kelly bushing (RKB) | ||
General
Well 9/2-9 S was drilled on the Beta West South structure on the Yme field. The objective of the well was to discover hydrocarbons in sandstones of Middle to Upper Jurassic age (Sandnes and Bryne Formations) in two different fault compartments, to establish the oil-water contact, and to get an exact depth of top Bryne Formation.
Operations and results
The deviated wildcat well 9/2-9 S was spudded with the semi-submersible installation "Byford Dolphin" on 29 June 1999, and drilled to TD at 4367 m (3386 m TVD RKB) in the Middle Jurassic Bryne Formation. The well was drilled with seawater and hi-vis pills down to 1944.5 m and with "Ultidrill" oil based mud from 1944.5 m to TD. The base oil in the "Ultidrill" mud system consists of olefins. Top Bryne Formation was penetrated at 4365 m. Definite oil/water contact was proved in the Middle Jurassic. The discovered hydrocarbon pool was modest however, and it was decided not to drill more wells on the Yme structures. One core was cut in the Sandnes Formation from 3995 m to 4012 m. A FMT oil sample was taken at 3990 m in the Sandnes Formation. The well was completed as an oil discovery on 18 October 1999 and re-classed to development well 9/2-B-4 H.
Testing
No drill stem test was performed.
No cuttings in this wellbore.
Core length [m]: 15.70
| Core number | Interval |
|---|---|
| 1 | 3995.00-4010.73 |
 3995-4000m |
 4000-4005m |
 4005-4010m |
 4010-4011m |
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 | 161.0 | 36 | 165.0 | |
| INTERM. | 20 | 1062.0 | 26 | 1071.0 | |
| INTERM. | 13 3/8 | 1944.0 | 17 1/2 | 1954.0 | 1.60 |
| INTERM. | 9 5/8 | 3868.0 | 12 1/4 | 3878.0 | 1.61 |
| OPEN HOLE | 4367.0 | 8 1/2 | 4367.0 |
| Depth MD [m] | Mud weight [g/cm3] | Visc. [MPa.s] | Yield [pnt Pa.] | Mud type | Date measured |
|---|---|---|---|---|---|
| 390 | 1.03 | DUMMY | |||
| 1071 | 1.03 | DUMMY | |||
| 1290 | 1.03 | SEAWATER/BENT. | |||
| 1481 | 1.03 | DUMMY | |||
| 1621 | 1.03 | DUMMY | |||
| 1729 | 1.03 | DUMMY | |||
| 1911 | 1.03 | DUMMY | |||
| 1954 | 1.03 | SEAWATER/BENT. | |||
| 2200 | 1.56 | DUMMY | |||
| 2700 | 1.54 | 40.0 | ULTIDRILL | ||
| 3464 | 1.60 | 36.0 | ULTIDRILL | ||
| 3500 | 1.60 | 38.0 | ULTIDRILL | ||
| 3878 | 1.30 | 32.0 | ULTIDRILL | ||
| 3995 | 1.25 | 24.0 | ULTIDRILL | ||
| 4058 | 1.25 | 25.0 | ULTIDRILL | ||
| 4312 | 1.25 | 27.0 | ULTIDRILL | ||
| 4367 | 1.25 | 26.0 | ULTIDRILL |
No drill stem test in this wellbore.
| Log type | Intervals logged [m] |
|---|---|
| MWD GR RT DIR NBI | 1954 - 3878 |
| MWD GR RES DIR PRES | 3878 - 3995 |
| MWD GR RES DEN NEU DIR | 3995 - 4367 |
| FMT CHT GR | 3893 - 4326 |
| Top depth [m] | Litostratigraphic unit |
|---|---|
| 102 | NORDLAND GP |
| 415 | HORDALAND GP |
| 940 | ROGALAND GP |
| 940 | BALDER FM |
| 980 | SELE FM |
| 1005 | LISTA FM |
| 1045 | VÅLE FM |
| 1050 | SHETLAND GP |
| 1050 | EKOFISK FM |
| 1160 | TOR FM |
| 1545 | HOD FM |
| 1868 | BLODØKS FM |
| 1908 | CROMER KNOLL GP |
| 1908 | RØDBY FM |
| 1953 | SOLA FM |
| 2019 | ÅSGARD FM |
| 2710 | BOKNFJORD GP |
| 2710 | FLEKKEFJORD FM |
| 2823 | SAUDA FM |
| 3551 | TAU FM |
| 3669 | EGERSUND FM |
| 3844 | VESTLAND GP |
| 3844 | SANDNES FM |
| 4365 | BRYNE FM |
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Composite log (Format:PDF. Size: 0.348 Mb) |
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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.
