Well Data Manager / Well Summary / 9/23a- 28

9/23a- 28

Decommissioned

Well Header

Well No
9/23a- 28
NSTA DEN No
4625
Well Name
--
Drill Seq No
28
Quadrant / Block
9 / 23 a
Surface Location
59.326537, 1.564603
Source Datum
ED50
Subsea Well
Unknown
Platform
--
Slot No
--
Operator
NEO NEXT+ ENERGY E&P NORTH SEA UK LIMITED
Original Operator
--
Sub Area Operator
NEO NEXT+ ENERGY E&P NORTH SEA UK LIMITED
Licence No
P257
Licence Type
Production
Spud Date
1992-01-21
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

9/23a- 28 Original
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Appraisal
Original Intent
Appraisal
Flow Class
Oil Show
Dev Type
--
Convention
--
Primary Target
F
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
24.384
Ground Elev (m)
--
Water Depth (m)
113.39
TD MD (m)
1958.035
TD TVDSS (m)
1933.651
TD Datum Depth (m)
24.384
TD Datum Type
Kelly Bushing
Spud Date
1992-01-21
TD Reached
1992-01-31
Completion Date
1992-02-05
Release Date
1996-02-05

Formation Tops (12)

Wellbore Formation Era MD (m) TVDSS (m) Provider
9/23a- 28 Unknown 138.000 113.615 BGS LithoStrat Upper
Oligocene Clay Unit 664.000 639.602 BGS LithoStrat Upper
Oligocene Clay Unit 902.000 877.583 BGS LithoStrat Upper
Grid Formation 942.000 917.582 BGS LithoStrat Upper
Horda Formation Cenozoic 1147.000 1122.576 BGS LithoStrat Upper
Upper Frigg Formation 1563.000 1538.509 BGS LithoStrat Upper
Upper Balder Cenozoic 1666.000 1641.489 BGS LithoStrat Upper
Middle Balder Cenozoic 1722.000 1697.478 BGS LithoStrat Upper
Lower Balder Cenozoic 1765.000 1740.470 BGS LithoStrat Upper
Sele Mesozoic 1797.000 1772.463 BGS LithoStrat Upper
Lista Mesozoic 1920.000 1895.437 BGS LithoStrat Upper
Lista Mesozoic 1958.000 1933.429 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
9/23a- 28 0 0 0 0 12 0 1 1 0 View

Hydrocarbon Occurrence (0)

No hydrocarbon shows or DSTs recorded for this well.

Rock Samples (30)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
9/23a- 28 Cuttings 908.3 1958.04 -- -- .
9/23a- 28 Core #1 1770.58 1785.82 φ 31.0% (n=20) · Kh 2721.3 mD (n=18) · Kv 2175.0 mD (n=2) · Density 2.66 (n=20) · SIMON ROBERTSON FRACTURES NO ANALYSIS; MUDSTONE NO ANALYSIS; SLEEVED SAMPLE .
9/23a- 28 ↳ Core Plug #1 1770.583 -- SIMON ROBERTSON MUDSTONE NO ANALYSIS --
9/23a- 28 ↳ Core Plug #1 1771.193 -- SIMON ROBERTSON MUDSTONE NO ANALYSIS --
9/23a- 28 ↳ Plug 04 1771.467 -- φ 27.0% · Kh 147.0 mD · Density 2.75 · SIMON ROBERTSON SLEEVED SAMPLE --
9/23a- 28 ↳ Core Plug #1 1771.802 -- SIMON ROBERTSON FRACTURES NO ANALYSIS --
9/23a- 28 ↳ Core Plug #1 1772.107 -- SIMON ROBERTSON FRACTURES NO ANALYSIS --
9/23a- 28 ↳ Plug 07 1772.442 -- φ 29.8% · Kh 2910.0 mD · Density 2.65 · SIMON ROBERTSON SLEEVED SAMPLE --
9/23a- 28 ↳ Plug 08 1772.717 -- φ 30.1% · Kh 2790.0 mD · Density 2.66 · SIMON ROBERTSON SLEEVED SAMPLE --
9/23a- 28 ↳ Plug 09 1773.037 -- φ 28.2% · Kh 2100.0 mD · Density 2.66 · SIMON ROBERTSON SLEEVED SAMPLE --
9/23a- 28 ↳ Plug 10 1773.281 -- φ 28.9% · Kh 2710.0 mD · Density 2.66 · SIMON ROBERTSON SLEEVED SAMPLE --
9/23a- 28 ↳ Plug 11V 1773.555 -- φ 30.1% · Kv 2650.0 mD · Density 2.65 · SIMON ROBERTSON SLEEVED SAMPLE --
9/23a- 28 ↳ Plug 11 1773.631 -- φ 29.4% · Kh 3490.0 mD · Density 2.66 · SIMON ROBERTSON SLEEVED SAMPLE --
9/23a- 28 ↳ Plug 12 1773.936 -- φ 30.8% · Kh 4030.0 mD · Density 2.65 · SIMON ROBERTSON SLEEVED SAMPLE --
9/23a- 28 ↳ Plug 13 1774.134 -- φ 27.1% · Kh 1110.0 mD · Density 2.66 · SIMON ROBERTSON SLEEVED SAMPLE --
9/23a- 28 ↳ Core Plug #1 1774.546 -- SIMON ROBERTSON MUDSTONE NO ANALYSIS --
9/23a- 28 ↳ Core Plug #1 1778.203 -- SIMON ROBERTSON MUDSTONE NO ANALYSIS --
9/23a- 28 ↳ Plug 27 1778.538 -- φ 30.0% · Kh 3680.0 mD · Density 2.65 · SIMON ROBERTSON SLEEVED SAMPLE --
9/23a- 28 ↳ Plug 28 1778.691 -- φ 30.0% · Kh 2470.0 mD · Density 2.66 · SIMON ROBERTSON SLEEVED SAMPLE --
9/23a- 28 ↳ Core Plug #1 1779.118 -- SIMON ROBERTSON MUDSTONE NO ANALYSIS --
9/23a- 28 ↳ Core Plug #1 1783.08 -- SIMON ROBERTSON MUDSTONE NO ANALYSIS --
9/23a- 28 ↳ Plug 43 1783.415 -- φ 32.6% · Kh 967.0 mD · Density 2.67 · SIMON ROBERTSON SLEEVED SAMPLE --
9/23a- 28 ↳ Plug 44 1783.72 -- φ 33.6% · Kh 4100.0 mD · Density 2.66 · SIMON ROBERTSON SLEEVED SAMPLE --
9/23a- 28 ↳ Plug 45 1783.994 -- φ 33.1% · Kh 4550.0 mD · Density 2.66 · SIMON ROBERTSON SLEEVED SAMPLE --
9/23a- 28 ↳ Plug 46 1784.36 -- φ 34.8% · Kh 3400.0 mD · Density 2.66 · SIMON ROBERTSON SLEEVED SAMPLE --
9/23a- 28 ↳ Plug 47V 1784.482 -- φ 33.6% · Kv 1700.0 mD · Density 2.66 · SIMON ROBERTSON SLEEVED SAMPLE --
9/23a- 28 ↳ Plug 47 1784.604 -- φ 33.2% · Kh 2590.0 mD · Density 2.66 · SIMON ROBERTSON SLEEVED SAMPLE --
9/23a- 28 ↳ Plug 48 1784.878 -- φ 31.3% · Kh 2090.0 mD · Density 2.67 · SIMON ROBERTSON SLEEVED SAMPLE --
9/23a- 28 ↳ Plug 49 1785.168 -- φ 33.9% · Kh 1650.0 mD · Density 2.67 · SIMON ROBERTSON SLEEVED SAMPLE --
9/23a- 28 ↳ Plug 50 1785.442 -- φ 32.0% · Kh 4200.0 mD · Density 2.66 · SIMON ROBERTSON SLEEVED SAMPLE --

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
9/23a- 28 105.15599822998047 1958.1876220703125 8 0 2026-08-06 16:07:35.137872+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
9/23a- 28
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density DEN OGA Batch Unzipped 889.254 1956.3588000000002 7003
bulk_density CDEN Energective CorrectedLOGS 906.7800000000001 1956.5112000000001 6889
bulk_density RHOB CGG Digital Well Logs 890.3208000000001 1955.4444 6990
caliper CALI CGG Digital Well Logs 889.5588 1944.0144 6920
caliper CLD Energective CorrectedLOGS 888.7968000000001 1955.2920000000001 6999
comp_sonic DTC Energective CorrectedLOGS 906.018 1945.8432 6824
comp_sonic DT CGG Digital Well Logs 889.5588 1945.6908 6931
deep_resistivity ILD Energective CorrectedLOGS 890.0160000000001 1958.1876000000002 7010
deep_resistivity RES_DEP OGA Batch Unzipped 888.9492 1958.1876000000002 7017
density_correction CDRH Energective CorrectedLOGS 888.7968000000001 1954.8348 6996
density_correction DRHO CGG Digital Well Logs 889.7112000000001 1955.1396000000002 6992
gamma_ray SGR CGG Digital Well Logs 843.0768 1950.2628000000002 7266
gamma_ray CGR CGG Digital Well Logs 843.2292 1950.2628000000002 7265
gamma_ray GR CGG Digital Well Logs 105.3084 1954.0728000000001 12132
gamma_ray GRI Energective CorrectedLOGS 105.156 1954.3776 12135
med_resistivity ILM Energective CorrectedLOGS 888.9492 1955.4444 6999
med_resistivity RES_MED OGA Batch Unzipped 888.9492 1958.1876000000002 7017
neutron_por CNEU Energective CorrectedLOGS 845.3628 1953.3108000000002 7271
neutron_por NEU OGA Batch Unzipped 888.9492 1953.6156 6987
neutron_por NPHI CGG Digital Well Logs 889.7112000000001 1953.1584 6979
potassium POTA CGG Digital Well Logs 843.2292 1950.2628000000002 7265
thorium THOR CGG Digital Well Logs 843.2292 1950.2628000000002 7265
tvdss SS Energective CorrectedLOGS 105.156 1958.3400000000001 12161
uranium URAN CGG Digital Well Logs 843.2292 1950.2628000000002 7265

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
9/23a- 28 29 1958.035 1933.464 D:\BigSpatial\nsta_raw\CGG_Deviation\9-23a-28 15565ac_CGG-Deviation.xlsx

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