23/21- 1

Decommissioned

Well Header

Well No
23/21- 1
NSTA DEN No
391
Well Name
--
Drill Seq No
1
Quadrant / Block
23 / 21
Surface Location
57.293302, 2.159958
Source Datum
ED50
Subsea Well
No
Platform
--
Slot No
--
Operator
CHRYSAOR LIMITED
Original Operator
--
Sub Area Operator
CHRYSAOR LIMITED
Licence No
P101
Licence Type
Production
Spud Date
1972-02-29
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

23/21- 1 Original
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Gas and Condensate Well
Dev Type
--
Convention
--
Primary Target
A
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
34.442
Ground Elev (m)
--
Water Depth (m)
85.95
TD MD (m)
2987.040
TD TVDSS (m)
2950.336
TD Datum Depth (m)
34.442
TD Datum Type
Kelly Bushing
Spud Date
1972-02-29
TD Reached
1972-04-20
Completion Date
1972-05-07
Release Date
1976-05-07

Formation Tops (18)

Wellbore Formation Era MD (m) TVDSS (m) Provider
23/21- 1 Moray Mesozoic 2526.000 2491.558 Lloyds Register
Balder Tuff Cenozoic 2526.000 2491.558 Lloyds Register
Balder Cenozoic 2526.000 2491.558 Lloyds Register
Sele Mesozoic 2539.000 2504.558 Lloyds Register
Forties Sandstone Mesozoic 2556.000 2521.558 Lloyds Register
Lista Mesozoic 2637.000 2602.558 Lloyds Register
Montrose Mesozoic 2637.000 2602.558 Lloyds Register
Balmoral Sandstone Cenozoic 2637.000 2602.558 Lloyds Register
Maureen Mesozoic 2734.000 2699.558 Lloyds Register
Ekofisk Mesozoic 2785.000 2750.558 Lloyds Register
Chalk Mesozoic 2785.000 2750.558 Lloyds Register
Upper Cretaceous Chalk Mesozoic 2851.000 2816.558 Lloyds Register
Lower Cretaceous Undifferentiated Mesozoic 2916.000 2881.558 Lloyds Register
Cromer Knoll Mesozoic 2916.000 2881.558 Lloyds Register
Ula 2923.000 2888.558 Lloyds Register
Humber Mesozoic 2923.000 2888.558 Lloyds Register
Heron Palaeozoic 2939.000 2904.558 Lloyds Register
Smith Bank Mesozoic 2939.000 2904.558 Lloyds Register

Lithology Intervals

23/21- 1 Curve: SANDCOUNT 60 intervals  ·  MD 217.780 – 2972.714 m G:/NSTA_BigFiles/NSTA_Packages/Lloyds_Register/NSTA Centr...
Sandstone (58)
Limestone (2)

Interpreted Data Inventory (LR / WellStrat)

Open Interpreted Data Log
Wellbore Groups Formations Members Strat Intervals Tops HC Occ Core Cuttings DSTs
23/21- 1 6 9 3 8 18 1 1 1 1 View

Hydrocarbon Occurrence (1)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
23/21- 1 DST DST 1 -- 2650.2 2653.3 Label / Forties

Rock Samples (45)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
23/21- 1 Cuttings 429.77 2987.04 -- -- .
23/21- 1 Core #2 2561.84 2575.56 φ 24.1% (n=43) · Kh 44.4 mD (n=40) · Kv 39.0 mD (n=41) · Density 2.87 (n=43) · EXPLORATION LOGGING Damaged Plugs core 1 ends 8415 .
23/21- 1 ↳ Plug 01 2562.149 -- φ 21.2% · Kh 1.7 mD · Kv 4.0 mD · Density 2.77 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 02 2562.484 -- φ 21.0% · Kh 0.7 mD · Kv 0.9 mD · Density 2.78 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 03 2562.85 -- φ 22.4% · Kh 0.5 mD · Kv 0.8 mD · Density 2.84 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 04 2563.155 -- φ 10.5% · Kh 0.5 mD · Density 2.95 · EXPLORATION LOGGING Damaged Plugs --
23/21- 1 ↳ Plug 05 2563.368 -- φ 21.6% · Kh 0.8 mD · Kv 1.0 mD · Density 2.85 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 06 2563.642 -- φ 19.1% · Kh 2.4 mD · Kv 0.6 mD · Density 2.87 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 07 2564.16 -- φ 21.3% · Kh 0.9 mD · Kv 0.8 mD · Density 2.91 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 08 2564.465 -- φ 15.7% · Kh 1.4 mD · Kv 0.6 mD · Density 2.81 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 09 2564.709 -- φ 18.7% · Kv 1.3 mD · Density 2.80 · EXPLORATION LOGGING Damaged Plugs --
23/21- 1 ↳ Plug 10 2564.983 -- φ 10.7% · Kh 4.9 mD · Kv 5.7 mD · Density 2.32 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 11 2565.38 -- φ 18.6% · Kh 1.4 mD · Kv 0.8 mD · Density 2.85 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 12 2565.624 -- φ 31.6% · Kh 10.4 mD · Kv 12.5 mD · Density 2.92 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 13 2565.989 -- φ 32.5% · Kh 9.5 mD · Kv 11.4 mD · Density 3.03 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 14 2566.264 -- φ 30.7% · Kv 30.2 mD · Density 2.97 · EXPLORATION LOGGING Damaged Plugs --
23/21- 1 ↳ Plug 15 2566.599 -- φ 19.1% · Kh 1.5 mD · Kv 0.8 mD · Density 2.90 · EXPLORATION LOGGING Damaged Plugs --
23/21- 1 ↳ Plug 16 2566.904 -- φ 6.5% · Kh 4.2 mD · Kv 1.0 mD · Density 2.46 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 17 2567.026 -- φ 18.1% · Kh 0.9 mD · Kv 1.0 mD · Density 2.89 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 18 2567.3 -- φ 22.6% · Kh 1.6 mD · Kv 1.3 mD · Density 2.88 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 19 2567.818 -- φ 26.8% · Kh 113.8 mD · Kv 118.8 mD · Density 2.90 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 20 2568.123 -- φ 37.4% · Kh 99.3 mD · Kv 73.3 mD · Density 2.89 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 21 2568.275 -- φ 24.4% · Kh 31.1 mD · Kv 8.6 mD · Density 3.01 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 22 2568.854 -- φ 16.2% · Kh 2.9 mD · Kv 1.4 mD · Density 2.82 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 23 2569.434 -- φ 47.2% · Kh 8.0 mD · Kv 8.0 mD · Density 2.90 · EXPLORATION LOGGING Damaged Plugs --
23/21- 1 ↳ Plug 24 2569.555 -- φ 27.2% · Kh 17.9 mD · Kv 59.0 mD · Density 2.90 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 25 2569.738 -- φ 15.3% · Kh 67.0 mD · Kv 38.6 mD · Density 2.53 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 26 2569.86 -- φ 24.2% · Kh 64.5 mD · Kv 36.5 mD · Density 2.83 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 27 2570.104 -- φ 37.4% · Kh 382.2 mD · Kv 514.8 mD · Density 3.05 · EXPLORATION LOGGING Damaged Plugs --
23/21- 1 ↳ Plug 28 2570.683 -- φ 33.5% · Kh 152.2 mD · Kv 106.8 mD · Density 3.02 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 29 2570.988 -- φ 23.0% · Kh 3.1 mD · Kv 3.0 mD · Density 2.98 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 30 2571.293 -- φ 26.3% · Kh 121.4 mD · Kv 90.3 mD · Density 2.86 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 31 2571.598 -- φ 30.1% · Kh 302.5 mD · Kv 287.8 mD · Density 2.80 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 32 2571.902 -- φ 30.1% · Kh 0.9 mD · Kv 1.4 mD · Density 2.88 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 33 2571.933 -- φ 22.5% · Kh 4.6 mD · Kv 4.2 mD · Density 2.94 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 34 2572.512 -- φ 29.8% · Kh 91.4 mD · Kv 29.1 mD · Density 2.99 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 35 2572.817 -- φ 24.6% · Kh 40.6 mD · Kv 38.2 mD · Density 2.86 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 36 2573.122 -- φ 24.4% · Kh 28.8 mD · Kv 15.8 mD · Density 2.86 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 37 2573.426 -- φ 33.2% · Kh 85.1 mD · Kv 47.6 mD · Density 3.04 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 38 2573.731 -- φ 23.1% · Kh 12.4 mD · Kv 6.9 mD · Density 2.90 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 39 2574.036 -- φ 22.7% · Kh 2.3 mD · Kv 1.5 mD · Density 2.83 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 40 2574.341 -- φ 22.8% · Kh 30.2 mD · Kv 13.9 mD · Density 2.91 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 41 2574.646 -- φ 20.3% · Kh 2.0 mD · Kv 1.7 mD · Density 2.87 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 43 2575.042 -- φ 26.2% · Density 3.09 · EXPLORATION LOGGING -- --
23/21- 1 ↳ Plug 42 2575.53 -- φ 26.6% · Kh 69.0 mD · Kv 15.3 mD · Density 2.86 · EXPLORATION LOGGING -- --

Wireline Log Inventory (Ingested Curves)

No wireline log curves ingested for this well.

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser

No scanned LAS source files matched to this well.

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
23/21- 1 0 -- -- --

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