Generated 11.02.2012
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Generated 11.02.2012 |
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| NPDID wellbore: | 4425 | |
| Well name: | 30/6-27 | |
| Drilling operator name: | Norsk Hydro Produksjon AS | |
| Geodetic datum: | ED50 | |
| Coordinates: | 60° 33` 28.86`` N | 2° 40` 45.58`` E |
| UTM coordinates: | 6713759.92 N | 482414.88 E |
| UTM zone: | 31 | |
| Drilled in production licence: | 053 | |
| Area: | NORTH SEA | |
| Discovery: | 30/6-27 | |
| Field: | OSEBERG | |
| Drill permit: | 1017-L | |
| Drilling facility: | TRANSOCEAN ARCTIC | |
| Drilling days: | 23 | |
| Wellbore entry date: | 08.10.2001 | |
| Wellbore completion date: | 30.10.2001 | |
| Original wellbore purpose: | WILDCAT | |
| Wellbore purpose: | WILDCAT | |
| Wellbore status: | P&A | |
| Wellbore contents: | OIL/GAS | |
| Discovery wellbore: | YES | |
| Formation/age with hydrocarbons 1: | STATFJORD FM / EARLY JURASSIC | |
| Seismic location: | NH 154-15,NH 154-403 | |
| Kelly bushing elevation (KB) [m]: | 24 | |
| Water depth [m]: | 112 | |
| Total Depth (MD) [m]: | 3432 | |
| Final vertical depth (TVD) [m]: | 3378 | |
| Max inclination [°]: | 26.60 | |
| Bottom hole temperature [°C]: | 124 | |
| Oldest penetrated age: | LATE TRIASSIC | |
| Oldest penetrated formation: | STATFJORD FM | |
| Note: All depths, except the water depth, are relative to kelly bushing (RKB) | ||
Well 30/6-27 is located a few km west of the Oseberg Field in the Northern North Sea. The main objective of the well was to prove sufficient volumes of oil and/or gas in The Statfjord Formation on the Kappa Nord structure for a joint sub sea development with the Kappa Main and Gamma Vest structures, and to confirm the seismic interpretation.
Operations and results
Wildcat well 30/7-26 was spudded with the semi-submersible installation Transocean Arctic on 8 October 2001 and drilled to TD at 3432 m (3378 m TVD RKB) in Late Triassic sediments of the Statfjord Formation. The well was vertical down to the 13 3/8" casing depth, but significant deviation from a vertical well path occurred below this depth. Maximum deviation, 26.6 deg, was recorded at 1946 m and at TD the displacement from the surface location was 287.5 m in an east-northeast direction. The well was drilled with seawater and hi-vis pills down to 1287 m and with Versavert oil based mud from 1287 m to TD.
Top reservoir was penetrated at 3101 m, 49 m shallower than prognosed. The uppermost ?25 m of the Statfjord Formation may be missing due to a fault. The well proved two gas columns (respectively 25 m and 4 m) and two oil columns in the Upper Statfjord Formation. Gas-oil-contacts were interpreted at 3145 m (3067 m TVD SS) and 3162 m (3084 m TVD SS). The shallowest oil column had an oil-down-to contact at 3169 m (3091 m TVD SS). The second of these two oil columns was difficult to interpret because no obvious oil and water gradients could be derived from the pressure data. An oil-down-to contact was assumed at 3187 m (3109 m TVD SS), giving an oil column thickness of 25 m. A third oil column (5m) without gas cap was proven in the Lower Statfjord Formation at 3350 - 3355 m (3272 - 3277 m TVD SS).
One 27 m core, with 100 % recovery, was cut in the upper Statfjord Formation (3162 - 3189 m). MDT fluid sampling was performed at 3352.5 m (oil), 3202.5 m (water), 3179.5 m (oil showing on OFA), 3162.5 m (oil), 3150.5 m (oil), and 3129 m RKB (gas).
The well was permanently abandoned on 30 October 2001 as an oil and gas discovery.
Testing
No drill stem test was performed.
Interval [m]: 1300.00 - 3432.00
Core length [m]: 26.90
| Core number | Interval |
|---|---|
| 1 | 3162.00-3188.90 |
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 | 196.0 | 36 | 198.0 | |
| SURF.COND. | 13 3/8 | 1250.0 | 17 1/2 | 1256.0 | |
| INTERM. | 9 5/8 | 3096.0 | 12 1/4 | 3102.0 | |
| OPEN HOLE | 3446.0 | 8 1/2 | 3446.0 |
| Depth MD [m] | Mud weight [g/cm3] | Visc. [MPa.s] | Yield [pnt Pa.] | Mud type | Date measured |
|---|---|---|---|---|---|
| 360 | OIL BASED | ||||
| 1287 | 1.39 | 16.0 | WATER BASED | ||
| 2010 | 1.45 | 29.0 | OIL BASED | ||
| 3061 | 1.50 | 30.0 | OIL BASED | ||
| 3070 | 1.35 | 23.0 | OIL BASED | ||
| 3432 | 1.35 | 26.0 | OIL BASED |
No drill stem test in this wellbore.
| Log type | Intervals logged [m] |
|---|---|
| MWD - GR RES DENS NEU DIR | 136 - 3432 |
| GR MDT | 3126 - 3404 |
| GR MDT | 3129 - 3352 |
| GR VSP DSI | 2185 - 2400 |
| Top depth [m] | Litostratigraphic unit |
|---|---|
| 136 | NORDLAND GP |
| 652 | UTSIRA FM |
| 947 | HORDALAND GP |
| 1015 | SKADE FM |
| 1048 | NO FORMAL NAME |
| 1235 | NO FORMAL NAME |
| 1303 | NO FORMAL NAME |
| 1365 | NO FORMAL NAME |
| 1417 | NO FORMAL NAME |
| 2051 | ROGALAND GP |
| 2051 | BALDER FM |
| 2133 | SELE FM |
| 2241 | LISTA FM |
| 2377 | VÅLE FM |
| 2396 | SHETLAND GP |
| 2396 | HARDRÅDE FM |
| 2405 | JORSALFARE FM |
| 2670 | KYRRE FM |
| 2996 | TRYGGVASON FM |
| 3095 | DUNLIN GP |
| 3095 | AMUNDSEN FM |
| 3101 | NO GROUP DEFINED |
| 3101 | STATFJORD FM |
No composite log presently available.
| File 1 | (Format:PDF. Size: 0.286 Mb ) |
| File 2 | (Format:PDF. Size: 2.229 Mb ) |
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