Well Data Manager / Well Summary / 21/23b- 6

21/23b- 6

Decommissioned

Well Header

Well No
21/23b- 6
NSTA DEN No
4736
Well Name
--
Drill Seq No
6
Quadrant / Block
21 / 23 b
Surface Location
57.297198, 0.501414
Source Datum
ED50
Subsea Well
Unknown
Platform
--
Slot No
--
Operator
DANA PETROLEUM (E&P) LIMITED
Original Operator
--
Sub Area Operator
DANA PETROLEUM (E&P) LIMITED
Licence No
P353
Licence Type
Production
Spud Date
1992-05-11
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

21/23b- 6 Original
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Appraisal
Original Intent
Appraisal
Flow Class
Oil Well
Dev Type
--
Convention
--
Primary Target
H
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
25.908
Ground Elev (m)
--
Water Depth (m)
83.52
TD MD (m)
2068.680
TD TVDSS (m)
2033.562
TD Datum Depth (m)
25.908
TD Datum Type
Kelly Bushing
Spud Date
1992-05-11
TD Reached
1992-06-08
Completion Date
1992-06-11
Release Date
1996-06-11

Formation Tops (9)

Wellbore Formation Era MD (m) TVDSS (m) Provider
21/23b- 6 Horda Cenozoic 1501.000 1468.279 Lloyds Register
Stronsay Cenozoic 1501.000 1468.279 Lloyds Register
Upper Tay Sandstone 1643.000 1609.522 Lloyds Register
Lower Tay Sandstone 1765.000 1731.125 Lloyds Register
Montrose Mesozoic 1876.000 1841.764 Lloyds Register
Lista Mesozoic 1876.000 1841.764 Lloyds Register
Maureen Mesozoic 1935.000 1900.510 Lloyds Register
Ekofisk Mesozoic 2020.000 1985.090 Lloyds Register
Chalk Mesozoic 2020.000 1985.090 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
21/23b- 6 3 4 2 11 9 1 1 1 0 View

Hydrocarbon Occurrence (2)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
21/23b- 6 Oil shows OS Nordland Group 1615.7448000000002 -- 27 m thick
21/23b- 6 Oil shows OS Strathtay Formation 1642.872 -- 107 m thick

Rock Samples (63)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
21/23b- 6 Cuttings 512.06 2069.59 -- -- .
21/23b- 6 Core #1 1637.69 1656.28 φ 39.1% (n=42) · Kh 2793.1 mD (n=18) · Kv 1478.2 mD (n=3) · Density 2.66 (n=42) · GEOCHEM GROUP LIMITED FRACTURED; N.P.P.; RUBBLE; SILTSTONE --
21/23b- 6 ↳ Plug 01 1637.69 -- GEOCHEM GROUP LIMITED SILTSTONE --
21/23b- 6 ↳ Plug 02 1637.995 -- φ 25.8% · Kh 81.0 mD · Kv 4.7 mD · Density 2.75 · GEOCHEM GROUP LIMITED -- --
21/23b- 6 ↳ Plug 03 1638.3 -- GEOCHEM GROUP LIMITED SILTSTONE --
21/23b- 6 ↳ Plug 04 1638.605 -- φ 24.2% · Kh 442.0 mD · Density 2.67 · GEOCHEM GROUP LIMITED -- --
21/23b- 6 ↳ Plug 05 1638.91 -- GEOCHEM GROUP LIMITED SILTSTONE --
21/23b- 6 ↳ Plug 06 1639.214 -- GEOCHEM GROUP LIMITED SILTSTONE --
21/23b- 6 ↳ Plug 07 1639.519 -- GEOCHEM GROUP LIMITED SILTSTONE --
21/23b- 6 ↳ Plug 08 1639.824 -- GEOCHEM GROUP LIMITED SILTSTONE --
21/23b- 6 ↳ Plug 09 1640.129 -- GEOCHEM GROUP LIMITED SILTSTONE --
21/23b- 6 ↳ Plug 10 1640.342 -- φ 28.7% · Kh 775.0 mD · Density 2.67 · GEOCHEM GROUP LIMITED -- --
21/23b- 6 ↳ Plug 11 1640.83 -- φ 24.6% · Kh 643.0 mD · Density 2.70 · GEOCHEM GROUP LIMITED -- --
21/23b- 6 ↳ Plug 12 1641.043 -- φ 33.3% · Kh 2820.0 mD · Kv 2440.0 mD · Density 2.66 · GEOCHEM GROUP LIMITED -- --
21/23b- 6 ↳ Plug 13 1641.348 -- GEOCHEM GROUP LIMITED N.P.P. --
21/23b- 6 ↳ Plug 14 1641.653 -- GEOCHEM GROUP LIMITED N.P.P. --
21/23b- 6 ↳ Plug 15 1641.958 -- φ 35.2% · Kh 1340.0 mD · Density 2.70 · GEOCHEM GROUP LIMITED -- --
21/23b- 6 ↳ Plug 16 1642.262 -- GEOCHEM GROUP LIMITED N.P.P. --
21/23b- 6 ↳ Plug 17 1642.567 -- GEOCHEM GROUP LIMITED N.P.P. --
21/23b- 6 ↳ Plug 18 1642.872 -- GEOCHEM GROUP LIMITED N.P.P. --
21/23b- 6 ↳ Plug 19 1643.146 -- φ 34.0% · Kh 3860.0 mD · Density 2.64 · GEOCHEM GROUP LIMITED -- --
21/23b- 6 ↳ Plug 20 1643.451 -- φ 42.9% · Density 2.64 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 21 1643.786 -- GEOCHEM GROUP LIMITED N.P.P. --
21/23b- 6 ↳ Plug 22 1644.244 -- φ 40.6% · Density 2.64 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 23 1644.487 -- φ 39.0% · Density 2.61 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 24 1644.701 -- φ 42.3% · Density 2.64 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 25 1645.006 -- GEOCHEM GROUP LIMITED N.P.P. --
21/23b- 6 ↳ Plug 26 1645.31 -- φ 44.0% · Density 2.65 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 27 1645.615 -- GEOCHEM GROUP LIMITED N.P.P. --
21/23b- 6 ↳ Plug 28 1645.92 -- φ 42.9% · Density 2.64 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 29 1646.225 -- φ 44.8% · Density 2.64 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 30 1646.438 -- φ 43.6% · Density 2.66 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 31 1646.804 -- φ 41.7% · Density 2.66 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 32 1647.139 -- φ 43.5% · Density 2.63 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 33 1647.292 -- φ 40.4% · Density 2.65 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 34 1647.718 -- φ 41.3% · Density 2.65 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 35 1648.054 -- φ 40.4% · Density 2.64 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 36 1648.297 -- φ 39.9% · Density 2.65 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 37 1648.663 -- φ 39.8% · Density 2.65 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 38 1648.968 -- φ 39.3% · Kh 4150.0 mD · Density 2.65 · GEOCHEM GROUP LIMITED -- --
21/23b- 6 ↳ Plug 39 1649.364 -- φ 38.3% · Kh 1780.0 mD · Density 2.67 · GEOCHEM GROUP LIMITED -- --
21/23b- 6 ↳ Plug 40 1649.578 -- φ 38.1% · Density 2.66 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 41 1649.882 -- φ 38.4% · Density 2.65 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 42 1650.248 -- φ 38.6% · Density 2.66 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 43 1650.492 -- φ 41.0% · Kh 3100.0 mD · Density 2.65 · GEOCHEM GROUP LIMITED -- --
21/23b- 6 ↳ Plug 44 1650.797 -- φ 40.5% · Kh 3180.0 mD · Density 2.65 · GEOCHEM GROUP LIMITED -- --
21/23b- 6 ↳ Plug 45 1651.163 -- φ 39.5% · Kh 1820.0 mD · Density 2.66 · GEOCHEM GROUP LIMITED -- --
21/23b- 6 ↳ Plug 46 1651.406 -- φ 39.2% · Kh 3980.0 mD · Density 2.66 · GEOCHEM GROUP LIMITED -- --
21/23b- 6 ↳ Plug 47 1651.803 -- φ 42.4% · Density 2.66 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 48 1652.107 -- φ 39.1% · Kh 4070.0 mD · Density 2.66 · GEOCHEM GROUP LIMITED -- --
21/23b- 6 ↳ Plug 49 1652.321 -- φ 40.2% · Density 2.68 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 50 1652.626 -- φ 38.4% · Kv 1990.0 mD · Density 2.67 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 51 1652.93 -- GEOCHEM GROUP LIMITED N.P.P. --
21/23b- 6 ↳ Plug 52 1653.235 -- φ 41.1% · Kh 935.0 mD · Density 2.69 · GEOCHEM GROUP LIMITED -- --
21/23b- 6 ↳ Plug 53 1653.54 -- φ 38.3% · Density 2.72 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 54 1653.845 -- GEOCHEM GROUP LIMITED SILTSTONE --
21/23b- 6 ↳ Plug 55 1654.18 -- φ 47.1% · Density 2.66 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 56 1654.454 -- φ 42.5% · Density 2.65 · GEOCHEM GROUP LIMITED FRACTURED --
21/23b- 6 ↳ Plug 57 1654.607 -- φ 43.0% · Kh 2400.0 mD · Density 2.68 · GEOCHEM GROUP LIMITED -- --
21/23b- 6 ↳ Plug 58 1655.034 -- φ 41.6% · Kh 6660.0 mD · Density 2.66 · GEOCHEM GROUP LIMITED -- --
21/23b- 6 ↳ Plug 59 1655.338 -- φ 41.7% · Kh 8240.0 mD · Density 2.65 · GEOCHEM GROUP LIMITED -- --
21/23b- 6 ↳ Plug 60 1655.674 -- GEOCHEM GROUP LIMITED N.P.P. --
21/23b- 6 ↳ Plug 61 1655.978 -- GEOCHEM GROUP LIMITED RUBBLE --

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
21/23b- 6 91.44000244140625 2065.32470703125 11 0 2026-08-06 10:21:24.957336+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
21/23b- 6
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density RHOB CGG Digital Well Logs 498.348 2053.7424 10207
caliper CALI CGG Digital Well Logs 498.8052 2053.7424 10204
caliper CALS CGG Digital Well Logs 1546.5552 2060.2956 3372
comp_sonic DT CGG Digital Well Logs 499.5672 1555.0896 6927
comp_sonic DT4P CGG Digital Well Logs 1546.7076000000002 2062.4292 3385
deep_resistivity LLD CGG Digital Well Logs 498.8052 2065.3248000000003 6329
density_correction DRHO CGG Digital Well Logs 499.11 2053.7424 10202
gamma_ray GR CGG Digital Well Logs 91.44 2042.16 12801
micro_resistivity MSFL CGG Digital Well Logs 1546.5552 2060.6004000000003 3374
neutron_por NPHI CGG Digital Well Logs 1546.4028 2049.3228 3301
pef PEF CGG Digital Well Logs 498.6528 2053.7424 10205
shallow_resistivity LLS CGG Digital Well Logs 498.9576 2065.3248000000003 6328
sp SP CGG Digital Well Logs 498.8052 917.9052 2751

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
21/23b- 6 105 2068.678 2033.559 D:\BigSpatial\nsta_raw\CGG_Deviation\21-23b-6 16011dd-CGG_Deviation.xlsx

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