Well Data Manager / Well Summary / 15/23a- 11

15/23a- 11

Decommissioned

Well Header

Well No
15/23a- 11
NSTA DEN No
4333
Well Name
--
Drill Seq No
11
Quadrant / Block
15 / 23 a
Surface Location
58.298892, 0.542185
Source Datum
ED50
Subsea Well
Unknown
Platform
--
Slot No
--
Operator
NEO NEXT + ENERGY RESOURCES UK LIMITED
Original Operator
--
Sub Area Operator
NEO NEXT + ENERGY RESOURCES UK LIMITED
Licence No
P324
Licence Type
Production
Spud Date
1991-02-23
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (2)

15/23a- 11 Original
Abandoned Phase 3 Survey
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Oil Well
Dev Type
Producer
Convention
--
Primary Target
L
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
23.165
Ground Elev (m)
--
Water Depth (m)
149.35
TD MD (m)
489.204
TD TVDSS (m)
466.039
TD Datum Depth (m)
23.470
TD Datum Type
Kelly Bushing
Spud Date
1991-02-23
TD Reached
1991-02-24
Completion Date
1991-03-07
Release Date
1995-03-07
15/23a- 11A Sidetrack A parent: 15/23a- 11
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Oil Show
Dev Type
--
Convention
--
Primary Target
L
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
23.165
Ground Elev (m)
--
Water Depth (m)
149.05
TD MD (m)
4221.480
TD TVDSS (m)
4195.366
TD Datum Depth (m)
23.165
TD Datum Type
Kelly Bushing
Spud Date
1991-03-07
TD Reached
1991-05-28
Completion Date
1991-05-28
Release Date
1995-05-28

Formation Tops (15)

Wellbore Formation Era MD (m) TVDSS (m) Provider
15/23a- 11A Horda Cenozoic 1032.000 1008.667 Lloyds Register
Stronsay Cenozoic 1032.000 1008.667 Lloyds Register
Caran Sanstone 1205.000 1181.643 Lloyds Register
Balder Cenozoic 1676.000 1652.603 Lloyds Register
Moray Mesozoic 1676.000 1652.603 Lloyds Register
Balder Tuff Cenozoic 1695.000 1671.601 Lloyds Register
Sele Mesozoic 1864.000 1840.574 Lloyds Register
Montrose Mesozoic 1962.000 1938.551 Lloyds Register
Lista Mesozoic 1962.000 1938.551 Lloyds Register
Balmoral Sandstone Cenozoic 2065.000 2041.519 Lloyds Register
Andrew Sandstone Cenozoic 2239.000 2215.481 Lloyds Register
Maureen Sandstone Mesozoic 2386.000 2362.468 Lloyds Register
Maureen Mesozoic 2386.000 2362.468 Lloyds Register
Chalk Mesozoic 2593.000 2569.458 Lloyds Register
Ekofisk Mesozoic 2593.000 2569.458 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
15/23a- 11 0 0 0 0 0 0 0 0 0
15/23a- 11A 4 6 5 26 15 2 0 1 1 View

Hydrocarbon Occurrence (6)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
15/23a- 11A Mixed shows OGS Lark Formation 645.8712 -- 385 m thick
15/23a- 11A Oil shows OS VALH 3552.1392 -- 423 m thick
15/23a- 11A Oil shows OS VALB 3975.2016000000003 -- 35 m thick
15/23a- 11A Oil O Upper Kimmeridge Clay 4010.2536 -- 56 m thick
15/23a- 11A DST DST 1 -- 4064.5 4125.5 Label / Upper Jurassic
15/23a- 11A Mixed shows OGS Claymore Sandstone Member 4066.6416000000004 -- 111 m thick

Rock Samples (1)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
15/23a- 11A Cuttings 490.73 4221.48 -- -- .

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
15/23a- 11A 124.51080322265625 4224.37548828125 12 0 2026-08-08 00:44:52.192435+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
15/23a- 11A
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density RHOB OGA Batch Unzipped 3890.772 4225.5948 2195
bulk_density ZDEN CGG Digital Well Logs 3890.6196 4224.3756 2191
cable_tension TENS OGA Batch Unzipped 138.3792 4225.7472 26043
caliper CAL CGG Digital Well Logs 481.8888 4224.3756 24480
caliper CALI CGG Digital Well Logs 3890.4672 4224.2232 2191
comp_sonic AC CGG Digital Well Logs 481.8888 4220.1084 24490
comp_sonic DT OGA Batch Unzipped 481.8888 4221.0228 23795
deep_resistivity RD CGG Digital Well Logs 3891.8388 4211.8788 2101
deep_resistivity RILD CGG Digital Well Logs 482.8032 3902.5068 22409
density_correction ZCOR CGG Digital Well Logs 3890.6196 4224.3756 2191
density_correction DRHO OGA Batch Unzipped 3890.772 4225.29 2193
gamma_ray GRD CGG Digital Well Logs 3847.1856000000002 4217.5176 2431
gamma_ray GR CGG Digital Well Logs 124.5108 4217.3652 26857
med_resistivity RILM CGG Digital Well Logs 482.6508 3903.4212 22416
med_resistivity RES_MED OGA Batch Unzipped 482.8032 3902.964 21703
micro_resistivity RMLL CGG Digital Well Logs 3890.4672 4224.2232 2191
micro_resistivity MLL OGA Batch Unzipped 3913.3272 4225.1376 2044
neutron_por CNC CGG Digital Well Logs 3890.4672 4219.194 2158
neutron_por NEU OGA Batch Unzipped 3856.3296 4221.3276 2395
pef PE CGG Digital Well Logs 3890.6196 4224.3756 2191
pef PEF OGA Batch Unzipped 3890.6196 4225.4424 2195
shallow_resistivity RFOC CGG Digital Well Logs 482.6508 3904.3356000000003 22415
shallow_resistivity RS CGG Digital Well Logs 3891.8388 4211.8788 2101
sp SP OGA Batch Unzipped 1723.9488 3904.9452 14029

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
15/23a- 11 0 -- -- --
15/23a- 11A 182 4221.480 4195.347 D:\BigSpatial\nsta_raw\CGG_Deviation\15-23a-11A 14616bg_CGG-Deviation.xlsx

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