21/11- 7

Decommissioned

Well Header

Well No
21/11- 7
NSTA DEN No
5556
Well Name
--
Drill Seq No
7
Quadrant / Block
21 / 11
Surface Location
57.509621, 0.063974
Source Datum
ED50
Subsea Well
Unknown
Platform
--
Slot No
--
Operator
SPIRIT ENERGY NORTH SEA OIL LIMITED
Original Operator
--
Sub Area Operator
SPIRIT ENERGY NORTH SEA OIL LIMITED
Licence No
P883
Licence Type
Production
Spud Date
1995-06-23
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

21/11- 7 Original
Current Intent
Appraisal
Original Intent
Appraisal
Flow Class
Oil Show
Dev Type
--
Convention
--
Primary Target
G
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
25.908
Ground Elev (m)
--
Water Depth (m)
89.31
TD MD (m)
2179.320
TD TVDSS (m)
2153.412
TD Datum Depth (m)
25.908
TD Datum Type
Rotary Table
Spud Date
1995-06-23
TD Reached
1995-07-16
Completion Date
1995-07-18
Release Date
1999-07-18

Formation Tops (24)

Wellbore Formation Era MD (m) TVDSS (m) Provider
21/11- 7 Horda Cenozoic 1118.000 1091.905 Lloyds Register
Stronsay Cenozoic 1118.000 1091.905 Lloyds Register
Upper Tay Sandstone 1204.000 1177.860 Lloyds Register
Balder Cenozoic 1285.000 1258.818 Lloyds Register
Moray Mesozoic 1285.000 1258.818 Lloyds Register
Sele Mesozoic 1381.000 1354.765 Lloyds Register
Montrose Mesozoic 1478.000 1451.711 Lloyds Register
Lista Mesozoic 1478.000 1451.711 Lloyds Register
Balmoral Sandstone Cenozoic 1582.000 1555.657 Lloyds Register
Maureen Mesozoic 1638.000 1611.629 Lloyds Register
Maureen Reworked Unit Mesozoic 1655.000 1628.620 Lloyds Register
Chalk Mesozoic 1676.000 1649.609 Lloyds Register
Ekofisk Mesozoic 1676.000 1649.609 Lloyds Register
Tor Mesozoic 1701.000 1674.597 Lloyds Register
Upper Cretaceous Chalk Mesozoic 1798.000 1771.560 Lloyds Register
Plenus Marl 1976.000 1949.508 Lloyds Register
Hidra Mesozoic 1980.000 1953.507 Lloyds Register
Rodby Mesozoic 2008.000 1981.501 Lloyds Register
Cromer Knoll Mesozoic 2008.000 1981.501 Lloyds Register
Kimmeridge Clay 2090.000 2063.480 Lloyds Register
Humber Mesozoic 2090.000 2063.480 Lloyds Register
Fulmar Mesozoic 2101.000 2074.478 Lloyds Register
Heron Palaeozoic 2123.000 2096.473 Lloyds Register
Smith Bank Mesozoic 2123.000 2096.473 Lloyds Register

Lithology Intervals

No lithology intervals ingested for this well.

Interpreted Data Inventory (LR / WellStrat)

Open Interpreted Data Log
Wellbore Groups Formations Members Strat Intervals Tops HC Occ Core Cuttings DSTs
21/11- 7 7 13 4 20 24 1 2 1 0 View

Hydrocarbon Occurrence (1)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
21/11- 7 Oil shows OS Kimmeridge Clay Formation 2102.2056000000002 -- 21 m thick

Rock Samples (12)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
21/11- 7 Cuttings 780.29 2179.32 -- -- --
21/11- 7 Core #1 2106.17 2108.85 φ 25.4% (n=2) · Density 2.64 (n=2) · GEOCHEM GROUP LIMITED FRAC --
21/11- 7 ↳ Plug 01 2107.783 -- φ 26.9% · Density 2.63 · GEOCHEM GROUP LIMITED FRAC --
21/11- 7 ↳ Plug 02 2108.302 -- φ 23.8% · Density 2.65 · GEOCHEM GROUP LIMITED FRAC --
21/11- 7 Core #2 2111.35 2139.64 φ 18.4% (n=3) · Density 2.74 (n=7) · GEOCHEM GROUP LIMITED FRAC --
21/11- 7 ↳ Plug 03 2117.141 -- Density 2.80 · GEOCHEM GROUP LIMITED FRAC --
21/11- 7 ↳ Plug 04 2118.451 -- Density 2.69 · GEOCHEM GROUP LIMITED FRAC --
21/11- 7 ↳ Plug 05 2118.726 -- Density 2.80 · GEOCHEM GROUP LIMITED FRAC --
21/11- 7 ↳ Plug 06 2120.92 -- φ 18.5% · Density 2.73 · GEOCHEM GROUP LIMITED FRAC --
21/11- 7 ↳ Plug 07 2122.079 -- φ 16.9% · Density 2.71 · GEOCHEM GROUP LIMITED FRAC --
21/11- 7 ↳ Plug 08 2122.505 -- Density 2.72 · GEOCHEM GROUP LIMITED FRAC --
21/11- 7 ↳ Plug 09 2124.243 -- φ 19.8% · Density 2.75 · GEOCHEM GROUP LIMITED FRAC --

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
21/11- 7 34.74720001220703 2171.395263671875 11 0 2026-08-06 10:12:23.316431+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
21/11- 7
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density RHOB CGG Digital Well Logs 762.3048 2153.1072 8863
caliper CALI CGG Digital Well Logs 762.3048 2153.1072 9008
comp_sonic DTLF CGG Digital Well Logs 775.4112 2165.9088 9006
deep_resistivity LLD CGG Digital Well Logs 763.2192 2171.3952 9185
density_correction DRHO CGG Digital Well Logs 763.0668000000001 2153.1072 8962
gamma_ray SGR CGG Digital Well Logs 34.7472 2144.5728 13845
gamma_ray CGR CGG Digital Well Logs 34.7472 2144.5728 13845
micro_resistivity MSFL CGG Digital Well Logs 776.3256 2156.46 9007
neutron_por NPHI CGG Digital Well Logs 762.3048 2148.2304 8905
pef PEF CGG Digital Well Logs 782.1168 2153.1072 8735
potassium POTA CGG Digital Well Logs 688.6956 2144.5728 9554
shallow_resistivity LLS CGG Digital Well Logs 763.2192 2171.3952 9187
sp SP CGG Digital Well Logs 765.5052000000001 2137.8672 8748
thorium THOR CGG Digital Well Logs 688.6956 2144.5728 9554
uranium URAN CGG Digital Well Logs 688.6956 2144.5728 9554

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
21/11- 7 72 2179.320 2152.781 D:\BigSpatial\nsta_raw\CGG_Deviation\21-11-7 22817aj_CGG-Deviation.xlsx

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