Well Data Manager / Well Summary / 21/28a- 2

21/28a- 2

Decommissioned

Well Header

Well No
21/28a- 2
NSTA DEN No
3044
Well Name
--
Drill Seq No
2
Quadrant / Block
21 / 28 a
Surface Location
57.151625, 0.551030
Source Datum
ED50
Subsea Well
No
Platform
--
Slot No
--
Operator
ANTRIM ENERGY (VENTURES) LIMITED
Original Operator
--
Sub Area Operator
ANTRIM ENERGY (VENTURES) LIMITED
Licence No
P77
Licence Type
Production
Spud Date
1986-11-05
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

21/28a- 2 Original
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Oil Well
Dev Type
--
Convention
--
Primary Target
NE
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
25.908
Ground Elev (m)
--
Water Depth (m)
87.17
TD MD (m)
1874.520
TD TVDSS (m)
1848.612
TD Datum Depth (m)
25.908
TD Datum Type
Kelly Bushing
Spud Date
1986-11-05
TD Reached
1986-11-30
Completion Date
2015-09-15
Release Date
2019-09-15

Formation Tops (21)

Wellbore Formation Era MD (m) TVDSS (m) Provider
21/28a- 2 Horda Cenozoic 1226.000 1199.989 Lloyds Register
Stronsay Cenozoic 1226.000 1199.989 Lloyds Register
Upper Tay Sandstone 1369.000 1342.986 Lloyds Register
Moray Mesozoic 1405.000 1378.984 Lloyds Register
Balder Cenozoic 1405.000 1378.984 Lloyds Register
Balder Sandstone 1407.000 1380.984 Lloyds Register
Lista Mesozoic 1415.000 1388.984 Lloyds Register
Montrose Mesozoic 1415.000 1388.984 Lloyds Register
Maureen Mesozoic 1504.000 1477.981 Lloyds Register
Ekofisk Mesozoic 1527.000 1500.979 Lloyds Register
Chalk Mesozoic 1527.000 1500.979 Lloyds Register
Upper Cretaceous Chalk Mesozoic 1538.000 1511.978 Lloyds Register
Lower Cretaceous Undifferentiated Mesozoic 1726.000 1699.912 Lloyds Register
Cromer Knoll Mesozoic 1726.000 1699.912 Lloyds Register
Kimmeridge Clay 1756.000 1729.890 Lloyds Register
Humber Mesozoic 1756.000 1729.890 Lloyds Register
Fulmar Mesozoic 1806.000 1779.842 Lloyds Register
Smith Bank Mesozoic 1834.000 1807.809 Lloyds Register
Heron Palaeozoic 1834.000 1807.809 Lloyds Register
Zechstein Palaeozoic 1856.000 1829.783 Lloyds Register
Turbot Anhydrite Palaeozoic 1856.000 1829.783 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
21/28a- 2 8 11 2 23 21 3 2 1 3 View

Hydrocarbon Occurrence (4)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
21/28a- 2 Mixed OG Strathtay Formation 1327.404 -- 66 m thick
21/28a- 2 DST DST 2 -- 1368.2 1415.5 Not used for labelling, multiple DSTs in same play / Alba
21/28a- 2 DST DST 3 -- 1368.3 1415.5 Label / Alba
21/28a- 2 DST DST 1 -- 1382.3 1388.4 Not used for labelling, multiple DSTs in same play / Alba

Rock Samples (49)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
21/28a- 2 Cuttings 192.02 1874.52 -- -- .
21/28a- 2 Core #2 1341.12 1358.04 φ 35.7% (n=1) · Kh 2050.0 mD (n=1) · Density 2.72 (n=1) · ROBERTSON RESEARCH PLUG AND CHIP SAMPLES FAILED DURING ANALYSIS DUE TO VERY ARGILLACEOUS NATURE OF CORE | SST, F, V SL CMT. .
21/28a- 2 ↳ Plug 01 1345.006 -- ROBERTSON RESEARCH PLUG AND CHIP SAMPLES FAILED DURING ANALYSIS DUE TO VERY ARGILLACEOUS NATURE OF CORE --
21/28a- 2 ↳ Plug 12 1356.793 -- ROBERTSON RESEARCH PLUG AND CHIP SAMPLES FAILED DURING ANALYSIS DUE TO VERY ARGILLACEOUS NATURE OF CORE --
21/28a- 2 ↳ Plug 13 1357.655 -- φ 35.7% · Kh 2050.0 mD · Density 2.72 · ROBERTSON RESEARCH SST, F, V SL CMT. --
21/28a- 2 Core #3 1818.13 1834.59 φ 19.3% (n=38) · Kh 19.6 mD (n=38) · Density 2.69 (n=38) · ROBERTSON RESEARCH NO SAMPLES POSSIBLE HEAVILY FRACTURED CORE.; NPP - HEAVILY FRACTURED CORE; NPP - SATURATION SAMPLE; PLUG FRACTURED UNDER TESTING. | SST BRECCI, CLASTS OF F SST, SL ARG, MOD CMT.; SST BRECCIA CLASTS OF F LAM SST, MOD CMT, SL PYR.; SST BRECCIA, CLASTS OF F LAM SST, SL MATRIX OF ARG SST, MOD CMT, CMN PYR.; SST BRECCIA, CLASTS OF F SST AND CLYST, MOD CMT, SL PYR.; SST BRECCIA, CLASTS OF F SST AND MIC SST , MOD CMT, OCC PYR.; SST BRECCIA, CLASTS OF F SST AND MINOR CLYST, SL ARG, MOD CMT, OCC MIC, SL PYR.; SST BRECCIA, CLASTS OF F SST WITH MIC AND PYR LAMS, MOD CMT, CLOSED FRACS.; SST BRECCIA, CLASTS OF F SST WITH MIC AND PYR LAMS, OCC ARG SST MATRIX, MOD CMT, OCC PYR NODS.; SST BRECCIA, CLASTS OF F SST, LAM SST AND CLYST, MOD CMT.; SST BRECCIA, CLASTS OF F SST, MINOR CLYST, MOD CMT, SL PYR.; SST BRECCIA, CLASTS OF F SST, MOD ARG MATRIX, MOD CMT, PART OPEN FRACS.; SST BRECCIA, CLASTS OF F SST, MOD CMT, CLOSED FRACS.; SST BRECCIA, CLASTS OF F SST, MOD CMT, OCC MIC, OCC PYR.; SST BRECCIA, CLASTS OF F SST, MOD CMT, SL PYR.; SST BRECCIA, CLASTS OF F SST, MOD MATRIX OF ARG SST, MOD CMT.; SST BRECCIA, CLASTS OF F SST, OCC ARG, MOD CMT, SL PYR, CLOSED FRAC.; SST BRECCIA, CLASTS OF F SST, OCC ARG, MOD CMT, TR CARB.; SST BRECCIA, CLASTS OF F SST, OCC ARG, MOD CMT.; SST BRECCIA, CLASTS OF F SST, SL ARG, MOD CMT, CLOSED FRACS.; SST BRECCIA, CLASTS OF F SST, SL ARG, MOD CMT, OCC MIC, SL PYR, CLOSED FRACS.; SST BRECCIA, CLASTS OF F SST, SL ARG, MOD CMT, SL PYR, PARTLY OPEN FRACS.; SST BRECCIA, CLASTS OF F SST, SL MATRIX OF ARG SST, MOD CMT, MOD PYR.; SST BRECCIA, CLASTS OF F SST, SL MATRIX OF ARG SST, MOD CMT, OCC PYR.; SST BRECCIA, CLASTS OF F SST, SL MATRIX OF ARG SST, MOD CMT, SL PYR.; SST BRECCIA, CLASTS OF VL AND F SST, MOD CMT, SL PYR.; SST BRECCIA, SST BRECCIA, CLASTS OF F SST, SL ARG, MOD CMT, SL PYR, PARTLY OPEN FRACS.; SST BRECCIA, SST, SL MATRIX OF ARG SST, MOD CMT, SL MIC.; SST PB, F, MOD CMT, CMN CMTD FRACS PARTLY BY PYR.; SST, BRECCIA, CLASTS OF F SST AND ARG SST, MOD CMT, OCC PYR.; SST, BRECCIA, CLASTS OF F SST, MOD CMT, CLOSED FRACS.; SST, BRECCIA, CLASTS OF F SST, MOD CMT, SL PYR.; SST, BRECCIA, CLASTS OF F SST, SL MATRIX OF ARG SST, MOD CMT, OCC PYR.; SST, BRECCIA, CLASTS OF F SST, SL MATRIX OF ARG SST, MOD CMT, SL PYR.; SST, PB, F, MOD CMT, SL PYR.; SST, SL MATRIX OF ARG SST, MOD CMT, SL MIC. .
21/28a- 2 ↳ Plug 14 1818.184 -- φ 24.5% · Kh 15.0 mD · Density 2.70 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST AND CLYST, MOD CMT, SL PYR. --
21/28a- 2 ↳ Plug 15 1818.437 -- φ 20.3% · Kh 15.0 mD · Density 2.68 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST, MINOR CLYST, MOD CMT, SL PYR. --
21/28a- 2 ↳ Plug 16 1818.97 -- φ 19.2% · Kh 16.0 mD · Density 2.68 · ROBERTSON RESEARCH SST PB, F, MOD CMT, CMN CMTD FRACS PARTLY BY PYR. --
21/28a- 2 ↳ Plug 17 1819.251 -- φ 21.8% · Kh 16.0 mD · Density 2.67 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST, MOD CMT, OCC MIC, OCC PYR. --
21/28a- 2 ↳ Plug 18 1819.504 -- φ 21.5% · Kh 2.2 mD · Density 2.66 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST, OCC ARG, MOD CMT, SL PYR, CLOSED FRAC. --
21/28a- 2 ↳ Plug 19 1819.656 -- φ 22.3% · Kh 5.0 mD · Density 2.66 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST, OCC ARG, MOD CMT, TR CARB. --
21/28a- 2 ↳ Plug 20 1819.985 -- φ 24.7% · Kh 145.0 mD · Density 2.66 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST, MOD CMT, CLOSED FRACS. --
21/28a- 2 ↳ Plug 21 1820.442 -- φ 25.6% · Kh 53.0 mD · Density 2.66 · ROBERTSON RESEARCH SST, BRECCIA, CLASTS OF F SST, MOD CMT, CLOSED FRACS. --
21/28a- 2 ↳ Plug 22 1820.775 -- φ 21.7% · Kh 8.9 mD · Density 2.65 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST, SL ARG, MOD CMT, CLOSED FRACS. --
21/28a- 2 ↳ Plug 23 1821.052 -- φ 21.4% · Kh 10.9 mD · Density 2.69 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST, SL ARG, MOD CMT, OCC MIC, SL PYR, CLOSED FRACS. --
21/28a- 2 ↳ Plug 24 1821.256 -- φ 19.1% · Kh 147.0 mD · Density 2.70 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST, SL ARG, MOD CMT, SL PYR, PARTLY OPEN FRACS. --
21/28a- 2 ↳ Plug 25 1821.637 -- φ 25.4% · Kh 97.0 mD · Density 2.68 · ROBERTSON RESEARCH SST BRECCIA, SST BRECCIA, CLASTS OF F SST, SL ARG, MOD CMT, SL PYR, PARTLY OPEN FRACS. --
21/28a- 2 ↳ Plug 26 1821.79 -- φ 19.6% · Kh 11.2 mD · Density 2.66 · ROBERTSON RESEARCH SST, PB, F, MOD CMT, SL PYR. --
21/28a- 2 ↳ Plug 27 1822.094 -- ROBERTSON RESEARCH NPP - SATURATION SAMPLE --
21/28a- 2 ↳ Plug 28 1822.475 -- φ 19.3% · Kh 4.2 mD · Density 2.67 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST AND MINOR CLYST, SL ARG, MOD CMT, OCC MIC, SL PYR. --
21/28a- 2 ↳ Plug 29 1822.704 -- ROBERTSON RESEARCH NPP - HEAVILY FRACTURED CORE --
21/28a- 2 ↳ Plug 30 1823.137 -- ROBERTSON RESEARCH PLUG FRACTURED UNDER TESTING. --
21/28a- 2 ↳ Plug 31 1823.314 -- ROBERTSON RESEARCH NO SAMPLES POSSIBLE HEAVILY FRACTURED CORE. --
21/28a- 2 ↳ Plug 39 1825.752 -- ROBERTSON RESEARCH NO SAMPLES POSSIBLE HEAVILY FRACTURED CORE. --
21/28a- 2 ↳ Plug 40 1826.185 -- φ 21.2% · Kh 37.0 mD · Density 2.65 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST, MOD CMT, SL PYR. --
21/28a- 2 ↳ Plug 41 1826.438 -- φ 17.2% · Kh 3.6 mD · Density 2.67 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF VL AND F SST, MOD CMT, SL PYR. --
21/28a- 2 ↳ Plug 42 1826.691 -- φ 19.4% · Kh 11.9 mD · Density 2.66 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST, MOD CMT, SL PYR. --
21/28a- 2 ↳ Plug 43 1826.996 -- φ 19.3% · Kh 13.0 mD · Density 2.65 · ROBERTSON RESEARCH SST, BRECCIA, CLASTS OF F SST, MOD CMT, SL PYR. --
21/28a- 2 ↳ Plug 44 1827.428 -- φ 17.8% · Kh 3.0 mD · Density 2.69 · ROBERTSON RESEARCH SST, BRECCIA, CLASTS OF F SST AND ARG SST, MOD CMT, OCC PYR. --
21/28a- 2 ↳ Plug 45 1827.605 -- φ 18.4% · Kh 4.0 mD · Density 2.67 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST AND MIC SST , MOD CMT, OCC PYR. --
21/28a- 2 ↳ Plug 46 1827.91 -- φ 17.0% · Kh 2.1 mD · Density 2.68 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST, SL MATRIX OF ARG SST, MOD CMT, OCC PYR. --
21/28a- 2 ↳ Plug 47 1828.19 -- φ 19.7% · Kh 9.3 mD · Density 2.67 · ROBERTSON RESEARCH SST, BRECCIA, CLASTS OF F SST, SL MATRIX OF ARG SST, MOD CMT, OCC PYR. --
21/28a- 2 ↳ Plug 48 1828.623 -- φ 19.5% · Kh 9.2 mD · Density 2.64 · ROBERTSON RESEARCH SST, BRECCIA, CLASTS OF F SST, SL MATRIX OF ARG SST, MOD CMT, OCC PYR. --
21/28a- 2 ↳ Plug 49 1828.8 -- φ 15.0% · Kh 2.2 mD · Density 2.80 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST, SL MATRIX OF ARG SST, MOD CMT, MOD PYR. --
21/28a- 2 ↳ Plug 50 1829.157 -- φ 18.4% · Kh 8.5 mD · Density 2.66 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST, SL MATRIX OF ARG SST, MOD CMT, SL PYR. --
21/28a- 2 ↳ Plug 51 1829.41 -- φ 15.2% · Kh 1.1 mD · Density 2.64 · ROBERTSON RESEARCH SST, BRECCIA, CLASTS OF F SST, SL MATRIX OF ARG SST, MOD CMT, SL PYR. --
21/28a- 2 ↳ Plug 52 1829.739 -- φ 20.3% · Kh 5.0 mD · Density 2.66 · ROBERTSON RESEARCH SST BRECCIA CLASTS OF F LAM SST, MOD CMT, SL PYR. --
21/28a- 2 ↳ Plug 53 1830.071 -- φ 18.2% · Kh 11.0 mD · Density 2.71 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST WITH MIC AND PYR LAMS, MOD CMT, CLOSED FRACS. --
21/28a- 2 ↳ Plug 54 1830.376 -- φ 15.6% · Kh 2.4 mD · Density 2.82 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST WITH MIC AND PYR LAMS, OCC ARG SST MATRIX, MOD CMT, OCC PYR NODS. --
21/28a- 2 ↳ Plug 55 1830.681 -- φ 18.7% · Kh 6.7 mD · Density 2.66 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST, LAM SST AND CLYST, MOD CMT. --
21/28a- 2 ↳ Plug 56 1831.01 -- φ 20.9% · Kh 40.0 mD · Density 2.69 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST, MOD ARG MATRIX, MOD CMT, PART OPEN FRACS. --
21/28a- 2 ↳ Plug 57 1831.315 -- φ 22.7% · Kh 18.0 mD · Density 2.62 · ROBERTSON RESEARCH SST BRECCI, CLASTS OF F SST, SL ARG, MOD CMT. --
21/28a- 2 ↳ Plug 58 1831.796 -- φ 16.5% · Kh 1.4 mD · Density 2.65 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST, OCC ARG, MOD CMT. --
21/28a- 2 ↳ Plug 59 1832.101 -- φ 15.5% · Kh 1.2 mD · Density 2.66 · ROBERTSON RESEARCH SST, SL MATRIX OF ARG SST, MOD CMT, SL MIC. --
21/28a- 2 ↳ Plug 60 1832.281 -- φ 16.7% · Kh 1.3 mD · Density 2.65 · ROBERTSON RESEARCH SST BRECCIA, SST, SL MATRIX OF ARG SST, MOD CMT, SL MIC. --
21/28a- 2 ↳ Plug 61 1832.482 -- φ 16.5% · Kh 2.8 mD · Density 2.65 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST, SL MATRIX OF ARG SST, MOD CMT, SL PYR. --
21/28a- 2 ↳ Plug 62 1832.814 -- φ 10.5% · Kh 1.2 mD · Density 3.30 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F LAM SST, SL MATRIX OF ARG SST, MOD CMT, CMN PYR. --
21/28a- 2 ↳ Plug 63 1833.092 -- φ 18.1% · Kh 1.8 mD · Density 2.64 · ROBERTSON RESEARCH SST BRECCIA, CLASTS OF F SST, MOD MATRIX OF ARG SST, MOD CMT. --

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
21/28a- 2 106.68000030517578 1870.2528076171875 11 0 2026-08-06 17:29:06.17951+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
21/28a- 2
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density ZDEN CGG Digital Well Logs 1249.5276000000001 1869.0336000000002 4066
caliper CAL CGG Digital Well Logs 989.3808 1869.0336000000002 5773
caliper CALS CGG Digital Well Logs 1294.4856 1863.0900000000001 3732
comp_sonic AC CGG Digital Well Logs 989.3808 1856.2320000000002 5689
deep_resistivity RILD CGG Digital Well Logs 990.6 1869.3384 5767
density_correction ZCOR CGG Digital Well Logs 1249.68 1869.0336000000002 4065
gamma_ray GR CGG Digital Well Logs 106.68 1864.1568000000002 11533
gamma_ray GRD CGG Digital Well Logs 1325.1180000000002 1864.0044 3537
med_resistivity RILM CGG Digital Well Logs 990.4476000000001 1870.2528000000002 5774
micro_resistivity RMLL CGG Digital Well Logs 1293.114 1863.0900000000001 3741
neutron_por CNC CGG Digital Well Logs 1249.5276000000001 1540.6116000000002 1911
pef PE CGG Digital Well Logs 1325.1180000000002 1868.8812 3569
sp SP CGG Digital Well Logs 990.1428000000001 1870.2528000000002 5776

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
21/28a- 2 59 1860.194 1833.972 D:\BigSpatial\nsta_raw\CGG_Deviation\21-28a-2 4190ak_CGG-Deviation.xlsx

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