Well Data Manager / Well Summary / 21/15a- 2

21/15a- 2

Decommissioned

Well Header

Well No
21/15a- 2
NSTA DEN No
1704
Well Name
--
Drill Seq No
2
Quadrant / Block
21 / 15 a
Surface Location
57.658931, 0.891798
Source Datum
ED50
Subsea Well
No
Platform
--
Slot No
--
Operator
CNOOC PETROLEUM EUROPE LIMITED
Original Operator
--
Sub Area Operator
CNOOC PETROLEUM EUROPE LIMITED
Licence No
P120
Licence Type
Production
Spud Date
1981-06-19
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

21/15a- 2 Original
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Gas and Oil Well
Dev Type
--
Convention
--
Primary Target
A
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
24.384
Ground Elev (m)
--
Water Depth (m)
118.57
TD MD (m)
4236.720
TD TVDSS (m)
4211.242
TD Datum Depth (m)
24.384
TD Datum Type
Kelly Bushing
Spud Date
1981-06-19
TD Reached
1981-08-04
Completion Date
1981-08-24
Release Date
1985-08-24

Formation Tops (23)

Wellbore Formation Era MD (m) TVDSS (m) Provider
21/15a- 2 Horda Cenozoic 1949.000 1924.557 Lloyds Register
Stronsay Cenozoic 1949.000 1924.557 Lloyds Register
Balder Cenozoic 2283.000 2258.525 Lloyds Register
Moray Mesozoic 2283.000 2258.525 Lloyds Register
Balder Tuff Cenozoic 2292.000 2267.523 Lloyds Register
Sele Mesozoic 2323.000 2298.517 Lloyds Register
Forties Sandstone Mesozoic 2354.000 2329.512 Lloyds Register
Lista Mesozoic 2467.000 2442.486 Lloyds Register
Montrose Mesozoic 2467.000 2442.486 Lloyds Register
Balmoral Sandstone Cenozoic 2528.000 2503.470 Lloyds Register
Maureen Sandstone Mesozoic 2760.000 2735.392 Lloyds Register
Maureen Mesozoic 2760.000 2735.392 Lloyds Register
Chalk Mesozoic 2843.000 2818.370 Lloyds Register
Ekofisk Mesozoic 2843.000 2818.370 Lloyds Register
Upper Cretaceous Chalk Mesozoic 2905.000 2880.362 Lloyds Register
Cromer Knoll Mesozoic 3511.000 3486.153 Lloyds Register
Valhall Mesozoic 3511.000 3486.153 Lloyds Register
Humber Mesozoic 3565.000 3540.090 Lloyds Register
Kimmeridge Clay 3565.000 3540.090 Lloyds Register
Fulmar Mesozoic 3601.000 3576.040 Lloyds Register
Pentland Mesozoic 3619.000 3594.012 Lloyds Register
Fladen Mesozoic 3619.000 3594.012 Lloyds Register
Rattray Volcanics Mesozoic 3619.000 3594.012 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
21/15a- 2 7 11 5 22 23 2 3 1 1 View

Hydrocarbon Occurrence (5)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
21/15a- 2 Oil shows OS Forties Sandstone Member 2353.6656000000003 -- 284 m thick
21/15a- 2 Oil shows OS VALH 3510.9912000000004 -- 54 m thick
21/15a- 2 Oil shows OS Kimmeridge Clay Formation 3565.2456 -- 36 m thick
21/15a- 2 Oil shows OS JUSD 3601.212 -- 17 m thick
21/15a- 2 DST DST 1 -- 3602.7 3614.9 Label / Upper Jurassic

Rock Samples (21)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
21/15a- 2 Cuttings 496.82 4236.72 -- -- .
21/15a- 2 Core #1 3609.14 3613.3 φ 19.4% (n=11) · Kh 38.2 mD (n=11) · Kv 21.0 mD (n=11) · Density 2.69 (n=11) · THE ANALYSTS. SCAL | GEN SST: GY - LT BRN, VFN - FN GRN SUB ANG - SUB RND, OCC CARB STRKS, VFN GRN, HD, CARD STRKS.; SST: GY - LT BRN, VFN - FN GRN SUB ANG - SUB RND, OCC CARB STRKS. --
21/15a- 2 ↳ Plug 02 3609.442 -- THE ANALYSTS. SCAL --
21/15a- 2 ↳ Plug 03 3609.746 -- φ 25.4% · Kh 130.0 mD · Kv 76.0 mD · Density 2.68 · THE ANALYSTS. SST: GY - LT BRN, VFN - FN GRN SUB ANG - SUB RND, OCC CARB STRKS. --
21/15a- 2 ↳ Plug 04 3610.051 -- φ 22.6% · Kh 58.0 mD · Kv 31.0 mD · Density 2.68 · THE ANALYSTS. SST: GY - LT BRN, VFN - FN GRN SUB ANG - SUB RND, OCC CARB STRKS. --
21/15a- 2 ↳ Plug 05 3610.356 -- φ 24.4% · Kh 130.0 mD · Kv 73.0 mD · Density 2.66 · THE ANALYSTS. SST: GY - LT BRN, VFN - FN GRN SUB ANG - SUB RND, OCC CARB STRKS. --
21/15a- 2 ↳ Plug 06 3610.661 -- φ 19.2% · Kh 7.1 mD · Kv 2.5 mD · Density 2.67 · THE ANALYSTS. SST: GY - LT BRN, VFN - FN GRN SUB ANG - SUB RND, OCC CARB STRKS. --
21/15a- 2 ↳ Plug 07 3610.966 -- φ 18.5% · Kh 4.4 mD · Kv 0.8 mD · Density 2.68 · THE ANALYSTS. SST: GY - LT BRN, VFN - FN GRN SUB ANG - SUB RND, OCC CARB STRKS. --
21/15a- 2 ↳ Plug 08 3611.27 -- THE ANALYSTS. SCAL --
21/15a- 2 ↳ Plug 09 3611.575 -- φ 23.8% · Kh 73.0 mD · Kv 36.0 mD · Density 2.67 · THE ANALYSTS. SST: GY - LT BRN, VFN - FN GRN SUB ANG - SUB RND, OCC CARB STRKS. --
21/15a- 2 ↳ Plug 10 3611.88 -- φ 14.5% · Kh 0.1 mD · Kv 0.1 mD · Density 2.74 · THE ANALYSTS. GEN SST: GY - LT BRN, VFN - FN GRN SUB ANG - SUB RND, OCC CARB STRKS, VFN GRN, HD, CARD STRKS. --
21/15a- 2 ↳ Plug 11 3612.185 -- φ 19.7% · Kh 8.0 mD · Kv 4.9 mD · Density 2.69 · THE ANALYSTS. GEN SST: GY - LT BRN, VFN - FN GRN SUB ANG - SUB RND, OCC CARB STRKS, VFN GRN, HD, CARD STRKS. --
21/15a- 2 ↳ Plug 12 3612.49 -- φ 20.5% · Kh 8.4 mD · Kv 6.3 mD · Density 2.67 · THE ANALYSTS. GEN SST: GY - LT BRN, VFN - FN GRN SUB ANG - SUB RND, OCC CARB STRKS, VFN GRN, HD, CARD STRKS. --
21/15a- 2 ↳ Plug 13 3612.794 -- φ 16.1% · Kh 1.0 mD · Kv 0.3 mD · Density 2.70 · THE ANALYSTS. GEN SST: GY - LT BRN, VFN - FN GRN SUB ANG - SUB RND, OCC CARB STRKS, VFN GRN, HD, CARD STRKS. --
21/15a- 2 ↳ Plug 14 3613.099 -- φ 8.3% · Kh 0.7 mD · Kv 0.3 mD · Density 2.70 · THE ANALYSTS. GEN SST: GY - LT BRN, VFN - FN GRN SUB ANG - SUB RND, OCC CARB STRKS, VFN GRN, HD, CARD STRKS. --
21/15a- 2 Core #2 3613.4 3622.85 THE ANALYSTS. MAINLY SHALE/CLAYSTONE AND NO PLUGS WERE TAKEN.; SCAL --
21/15a- 2 ↳ Core Plug #2 3613.404 -- THE ANALYSTS. MAINLY SHALE/CLAYSTONE AND NO PLUGS WERE TAKEN. --
21/15a- 2 ↳ Core Plug #2 3613.404 -- THE ANALYSTS. SCAL --
21/15a- 2 ↳ Core Plug #2 3622.548 -- THE ANALYSTS. MAINLY SHALE/CLAYSTONE AND NO PLUGS WERE TAKEN. --
21/15a- 2 ↳ Core Plug #2 3622.548 -- THE ANALYSTS. MAINLY SHALE/CLAYSTONE AND NO PLUGS WERE TAKEN. --
21/15a- 2 Core #3 3622.85 3632.61 -- -- --

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
21/15a- 2 127.40640258789062 4237.78662109375 11 0 2026-08-06 10:14:42.06946+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
21/15a- 2
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density RHOB CGG Digital Well Logs 3351.2760000000003 3814.2672000000002 3029
caliper CALI CGG Digital Well Logs 3351.4284000000002 3814.2672000000002 3023
caliper CALS CGG Digital Well Logs 3352.038 3689.9088 2201
comp_sonic DT CGG Digital Well Logs 490.728 4227.4236 24472
deep_resistivity LLD CGG Digital Well Logs 3353.2572 3689.9088 2180
deep_resistivity ILD CGG Digital Well Logs 484.7844 4235.805600000001 24614
density_correction DRHO CGG Digital Well Logs 3351.8856 3814.2672000000002 3026
gamma_ray GRL CGG Digital Well Logs 3346.0944 3689.9088 2219
gamma_ray GR CGG Digital Well Logs 127.4064 4230.1668 26922
gamma_ray GRD CGG Digital Well Logs 3344.7228 3805.2756000000004 3023
med_resistivity ILM CGG Digital Well Logs 484.9368 4236.4152 24617
micro_resistivity MSFL CGG Digital Well Logs 3352.6476000000002 3689.9088 2202
neutron_por NPHI CGG Digital Well Logs 3351.4284000000002 3808.476 3000
shallow_resistivity LLS CGG Digital Well Logs 3352.9524 3689.9088 2173
shallow_resistivity SFLU CGG Digital Well Logs 484.7844 4237.0248 24622
sp SP CGG Digital Well Logs 484.4796 4237.7868 24629
sp SPL CGG Digital Well Logs 3352.4952000000003 3689.9088 2125

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
21/15a- 2 138 4236.720 4211.245 D:\BigSpatial\nsta_raw\CGG_Deviation\21-15a-2 1047ap_CGG-Deviation.xlsx

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