Well Data Manager / Well Summary / 23/26a- 18

23/26a- 18

Decommissioned

Well Header

Well No
23/26a- 18
NSTA DEN No
4868
Well Name
--
Drill Seq No
18
Quadrant / Block
23 / 26 a
Surface Location
57.080580, 2.083709
Source Datum
ED50
Subsea Well
Yes
Platform
--
Slot No
--
Operator
BP EXPLORATION OPERATING COMPANY LIMITED
Original Operator
--
Sub Area Operator
BP EXPLORATION OPERATING COMPANY LIMITED
Licence No
P57
Licence Type
Production
Spud Date
1992-11-07
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (2)

23/26a- 18 Original
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Appraisal
Original Intent
Appraisal
Flow Class
Oil Show
Dev Type
--
Convention
--
Primary Target
X
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
32.180
Ground Elev (m)
--
Water Depth (m)
85.14
TD MD (m)
3338.000
TD TVDSS (m)
2333.930
TD Datum Depth (m)
26.001
TD Datum Type
Kelly Bushing
Spud Date
1992-11-07
TD Reached
1992-12-14
Completion Date
1993-01-02
Release Date
1997-01-02
23/26a- 18Z Sidetrack Z parent: 23/26a- 18
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Development
Original Intent
Appraisal
Flow Class
Oil Show
Dev Type
Injector
Convention
--
Primary Target
X
Well Seq
WB2
Datum Type
Rotary Table
Datum Elev (m)
26.001
Ground Elev (m)
--
Water Depth (m)
85.14
TD MD (m)
3170.000
TD TVDSS (m)
2233.800
TD Datum Depth (m)
26.001
TD Datum Type
Kelly Bushing
Spud Date
1993-11-05
TD Reached
1993-12-10
Completion Date
1993-12-13
Release Date
1997-12-13

Formation Tops (19)

Wellbore Formation Era MD (m) TVDSS (m) Provider
23/26a- 18 Nordland Cenozoic 111.000 78.820 BGS LithoStrat Upper
Nordland Cenozoic 1035.000 977.965 BGS LithoStrat Upper
Balder Cenozoic 2257.000 1700.636 BGS LithoStrat Upper
Sele Mesozoic 2334.000 1744.880 BGS LithoStrat Upper
Forties Mesozoic 2352.000 1755.184 BGS LithoStrat Upper
Maureen Mesozoic 2373.000 1767.178 BGS LithoStrat Upper
Maureen Mesozoic 2427.000 1799.176 BGS LithoStrat Upper
Ekofisk Mesozoic 2445.000 1810.525 BGS LithoStrat Upper
Tor Mesozoic 2508.000 1850.018 BGS LithoStrat Upper
Tor Mesozoic 2965.000 2119.691 BGS LithoStrat Upper
Tor Mesozoic 3018.000 2150.834 BGS LithoStrat Upper
Hod Mesozoic 3092.000 2194.107 BGS LithoStrat Upper
Hod Mesozoic 3135.000 2218.744 BGS LithoStrat Upper
Rodby Mesozoic 3160.000 2232.873 BGS LithoStrat Upper
Zechstein Palaeozoic 3183.000 2245.895 BGS LithoStrat Upper
Tor Mesozoic 3239.000 2278.024 BGS LithoStrat Upper
23/26a- 18Z Montrose Mesozoic 2380.000 1777.234 BGS LithoStrat Upper
Ekofisk Mesozoic 2481.000 1835.116 BGS LithoStrat Upper
Tor Mesozoic 2586.000 1896.831 BGS LithoStrat Upper

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
23/26a- 18 0 0 0 16 16 1 0 1 0 View
23/26a- 18Z 0 0 0 3 3 1 0 1 2 View

Hydrocarbon Occurrence (2)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
23/26a- 18Z DST DST 1 -- 2560.6 3169.9 Not used for labelling, multiple DSTs in same play / Upper Cretaceous
23/26a- 18Z DST DST 1A -- 2560.6 3169.9 Label / Upper Cretaceous

Rock Samples (2)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
23/26a- 18 Cuttings 1044.0 3333.0 -- -- --
23/26a- 18Z Cuttings 2385.0 3170.0 -- -- --

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
23/26a- 18 93.57360076904297 3323.996337890625 12 0 2026-08-06 18:03:11.426559+00 View Log
23/26a- 18Z 2308.70751953125 3164.73828125 9 0 2026-08-06 12:24:28.932533+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
23/26a- 18
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density ZDEN CGG Digital Well Logs 2337.9684 3311.652 6165
caliper CAL CGG Digital Well Logs 1023.2136 3323.9964 9140
caliper CALI CGG Digital Well Logs 2435.1996 3312.8712 5760
caliper CALS CGG Digital Well Logs 2380.1832 3323.6916 6192
comp_sonic AC CGG Digital Well Logs 1023.9756 3318.9672 9151
deep_resistivity RD CGG Digital Well Logs 2373.63 3310.5852 6149
deep_resistivity RILD CGG Digital Well Logs 1024.7376 1478.8896 2981
density_correction ZCOR CGG Digital Well Logs 2373.1728 3319.272 6185
gamma_ray GR CGG Digital Well Logs 93.5736 3313.938 21132
gamma_ray GRD CGG Digital Well Logs 2345.2836 3306.0132 6305
med_resistivity RILM CGG Digital Well Logs 1024.89 1479.804 2986
micro_resistivity RMLL CGG Digital Well Logs 2373.1728 3323.844 6239
neutron_por CNC CGG Digital Well Logs 2373.1728 3304.3368 6111
pef PE CGG Digital Well Logs 2373.1728 3311.8044 6160
potassium K CGG Digital Well Logs 2370.4296 3313.7856 6191
shallow_resistivity RS CGG Digital Well Logs 2373.3252 3310.5852 6151
sp SP CGG Digital Well Logs 2373.1728 3299.7648 6081
thorium TH CGG Digital Well Logs 2370.4296 3313.7856 6191
23/26a- 18Z
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density RHOB CGG Digital Well Logs 2373.1728 3161.3856 5173
caliper CALI CGG Digital Well Logs 2373.1728 3161.3856 5173
comp_sonic DT4P CGG Digital Well Logs 2336.292 3154.68 5371
deep_resistivity IDPH CGG Digital Well Logs 2373.7824 3164.7384 5191
density_correction DRHO CGG Digital Well Logs 2373.1728 3161.3856 5173
gamma_ray GR CGG Digital Well Logs 2335.0728 3153.4608 5371
gamma_ray GRD CGG Digital Well Logs 2308.7076 3161.3856 5596
med_resistivity IMPH CGG Digital Well Logs 2373.7824 3164.7384 5191
neutron_por NPHI CGG Digital Well Logs 2309.3172 3161.3856 5565
pef PEF CGG Digital Well Logs 2373.1728 3161.3856 5173
shear_sonic DT4S CGG Digital Well Logs 2336.292 3154.68 5296

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
23/26a- 18 109 3338.343 2334.048 D:\BigSpatial\nsta_raw\CGG_Deviation\23-26a-18 17525da_CGG-Deviation.xlsx
23/26a- 18Z 104 3176.330 2240.124 D:\BigSpatial\nsta_raw\CGG_Deviation\23-26a-18Z 26897az_CGG-Deviation.xlsx

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