9/11a- 9

Decommissioned

Well Header

Well No
9/11a- 9
NSTA DEN No
6040
Well Name
--
Drill Seq No
9
Quadrant / Block
9 / 11 a
Surface Location
59.582067, 1.062661
Source Datum
ED50
Subsea Well
Unknown
Platform
--
Slot No
--
Operator
ADURA OPERATIONS LIMITED
Original Operator
--
Sub Area Operator
ADURA OPERATIONS LIMITED
Licence No
P335
Licence Type
Production
Spud Date
1997-01-09
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (4)

9/11a- 9 Original
Current Intent
Appraisal
Original Intent
Appraisal
Flow Class
Oil Well
Dev Type
--
Convention
--
Primary Target
H2
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
24.994
Ground Elev (m)
--
Water Depth (m)
108.20
TD MD (m)
1515.770
TD TVDSS (m)
--
TD Datum Depth (m)
24.994
TD Datum Type
Kelly Bushing
Spud Date
1997-01-09
TD Reached
1997-01-20
Completion Date
1998-03-09
Release Date
2002-03-09
9/11a- 9X Sidetrack X parent: 9/11a- 9Y
Current Intent
Appraisal
Original Intent
Appraisal
Flow Class
Oil Well
Dev Type
--
Convention
--
Primary Target
ST4
Well Seq
WB4
Datum Type
Kelly Bushing
Datum Elev (m)
22.860
Ground Elev (m)
--
Water Depth (m)
108.20
TD MD (m)
1943.710
TD TVDSS (m)
1539.850
TD Datum Depth (m)
22.860
TD Datum Type
Kelly Bushing
Spud Date
1998-02-25
TD Reached
1998-03-05
Completion Date
1998-03-09
Release Date
2002-03-09
9/11a- 9Y Sidetrack Y parent: 9/11a- 9
Current Intent
Appraisal
Original Intent
Appraisal
Flow Class
Oil Well
Dev Type
--
Convention
--
Primary Target
ST3
Well Seq
WB3
Datum Type
Kelly Bushing
Datum Elev (m)
22.860
Ground Elev (m)
--
Water Depth (m)
108.20
TD MD (m)
2775.204
TD TVDSS (m)
1521.562
TD Datum Depth (m)
22.860
TD Datum Type
Kelly Bushing
Spud Date
1998-02-15
TD Reached
1998-02-23
Completion Date
1998-02-25
Release Date
2002-02-25
9/11a- 9Z Sidetrack Z parent: 9/11a- 9
Current Intent
Appraisal
Original Intent
Appraisal
Flow Class
Oil Well
Dev Type
--
Convention
--
Primary Target
ST2
Well Seq
WB2
Datum Type
Kelly Bushing
Datum Elev (m)
22.860
Ground Elev (m)
--
Water Depth (m)
108.20
TD MD (m)
2611.526
TD TVDSS (m)
1460.053
TD Datum Depth (m)
22.860
TD Datum Type
Kelly Bushing
Spud Date
1998-02-03
TD Reached
1998-02-11
Completion Date
1998-02-13
Release Date
2002-02-13

Formation Tops (50)

Wellbore Formation Era MD (m) TVDSS (m) Provider
9/11a- 9 Beauly Cenozoic 964.000 938.924 Ternan
Beauly Cenozoic 964.000 938.924 Ternan
Upper Dornoch Sst 1021.000 995.922 Ternan
Maureen Sst Mesozoic 1449.000 1423.761 Ternan
Old Red Sandstone 1504.000 1478.751 Ternan
9/11a- 9X Dornoch Mesozoic 1151.000 1047.150 BGS LithoStrat Upper
Dornoch Mudstone Unit Cenozoic 1360.000 1146.834 BGS LithoStrat Upper
Lista Mesozoic 1368.000 1150.742 BGS LithoStrat Upper
Heimdal Sandstone Unit H20 Palaeozoic 1565.000 1256.593 BGS LithoStrat Upper
Heimdal Sandstone Member Mesozoic 1572.000 1261.052 BGS LithoStrat Upper
Maureen Mesozoic 1704.000 1341.389 BGS LithoStrat Upper
Lista Mesozoic 1719.000 1350.743 BGS LithoStrat Upper
Maureen Sand Member 1843.000 1431.095 BGS LithoStrat Upper
Maureen Sand Member 1906.000 1473.822 BGS LithoStrat Upper
Unknown 1939.000 1496.691 BGS LithoStrat Upper
9/11a- 9Y Mousa Formation Cenozoic 771.000 748.057 BGS LithoStrat Upper
Balder Cenozoic 958.000 921.185 BGS LithoStrat Upper
Dornoch Sandstone Member Palaeozoic 1061.000 996.280 BGS LithoStrat Upper
Lista Mesozoic 1792.000 1144.004 BGS LithoStrat Upper
Heimdal Sandstone Unit H40 Palaeozoic 1828.000 1148.657 BGS LithoStrat Upper
Heimdal Sandstone Member Mesozoic 2287.000 1242.358 BGS LithoStrat Upper
Heimdal Sandstone Unit H30 Palaeozoic 2317.000 1252.881 BGS LithoStrat Upper
Heimdal Sandstone Member Mesozoic 2323.000 1255.090 BGS LithoStrat Upper
Heimdal Sandstone Unit H20 Palaeozoic 2379.000 1276.634 BGS LithoStrat Upper
Heimdal Sandstone Member Mesozoic 2495.000 1330.757 BGS LithoStrat Upper
Heimdal Sandstone Member H10 Mesozoic 2583.000 1381.540 BGS LithoStrat Upper
Lista Mesozoic 2627.000 1409.165 BGS LithoStrat Upper
Maureen Mesozoic 2687.000 1448.263 BGS LithoStrat Upper
Maureen Sand Member 2706.000 1460.779 BGS LithoStrat Upper
Chalk Mesozoic 2762.000 1497.855 BGS LithoStrat Upper
Unknown 2768.000 1501.847 BGS LithoStrat Upper
9/11a- 9Z Mousa Formation Cenozoic 771.000 748.059 BGS LithoStrat Upper
Mousa Formation Cenozoic 774.000 751.059 BGS LithoStrat Upper
Balder Cenozoic 949.000 920.928 BGS LithoStrat Upper
Dornoch Sandstone Member Palaeozoic 1042.000 995.668 BGS LithoStrat Upper
Dornoch Sandstone Member Palaeozoic 1072.000 1016.167 BGS LithoStrat Upper
Dornoch Mudstone Unit Cenozoic 1291.000 1091.805 BGS LithoStrat Upper
Lista Mesozoic 1522.000 1141.352 BGS LithoStrat Upper
Heimdal Sandstone Unit H40 Palaeozoic 1628.000 1156.964 BGS LithoStrat Upper
Heimdal Sandstone Member Mesozoic 1788.000 1190.932 BGS LithoStrat Upper
Heimdal Sandstone Unit H30 Palaeozoic 1833.000 1203.621 BGS LithoStrat Upper
Heimdal Sandstone Unit H30 Palaeozoic 1867.000 1214.042 BGS LithoStrat Upper
Heimdal Sandstone Member Mesozoic 1913.000 1228.217 BGS LithoStrat Upper
Heimdal Sandstone Unit H20 Palaeozoic 2193.000 1309.354 BGS LithoStrat Upper
Heimdal Sandstone Member Mesozoic 2201.000 1312.077 BGS LithoStrat Upper
Heimdal Sandstone Member H10 Mesozoic 2430.000 1390.897 BGS LithoStrat Upper
Lista Mesozoic 2510.000 1420.368 BGS LithoStrat Upper
Maureen Mesozoic 2547.000 1433.354 BGS LithoStrat Upper
Maureen Sand Member 2563.000 1438.523 BGS LithoStrat Upper
Maureen Sand Member 2634.000 1460.756 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
9/11a- 9 0 0 0 18 5 0 3 1 0 View
9/11a- 9X 0 0 0 10 10 0 0 1 0 View
9/11a- 9Y 0 0 0 16 16 0 0 1 0 View
9/11a- 9Z 0 0 0 18 19 0 0 1 0 View

Hydrocarbon Occurrence (19)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
9/11a- 9 Oil O Dornoch Formation 1021.08 -- 14 m thick
9/11a- 9 Oil O Lista Formation 1176.528 -- 55 m thick
9/11a- 9 Oil O Lista Formation 1231.6968000000002 -- 92 m thick
9/11a- 9 Oil O HEIM 1325.5752 -- 37 m thick
9/11a- 9 Oil O HEIM 1379.22 -- 5 m thick
9/11a- 9 Oil O Lista Formation 1384.7064 -- 54 m thick
9/11a- 9 Oil O MASD 1448.7144 -- 22 m thick
9/11a- 9X Oil shows OS Heimdal Sandstone Member 1565.4528 -- 6 m thick
9/11a- 9Y Oil shows OS DRSM 1060.704 -- 731 m thick
9/11a- 9Y Oil shows OS Lista Formation 1791.6144000000002 -- 36 m thick
9/11a- 9Y Oil shows OS Heimdal Sandstone Member 1827.8856 -- 459 m thick
9/11a- 9Y Oil shows OS Heimdal Sandstone Member 2322.576 -- 56 m thick
9/11a- 9Y Oil shows OS Heimdal Sandstone Member 2378.964 -- 116 m thick
9/11a- 9Y Oil shows OS MASD 2706.3192 -- 56 m thick
9/11a- 9Z Oil shows OS DRSM 1041.5016 -- 31 m thick
9/11a- 9Z Oil shows OS Dowbridge Mudstone Formation 1290.828 -- 231 m thick
9/11a- 9Z Oil shows OS Heimdal Sandstone Member 1628.2416 -- 160 m thick
9/11a- 9Z Oil shows OS Heimdal Sandstone Member 1833.0672000000002 -- 34 m thick
9/11a- 9Z Oil shows OS Heimdal Sandstone Member 2193.036 -- 8 m thick

Rock Samples (7)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
9/11a- 9 Cuttings 804.67 1540.76 -- -- --
9/11a- 9 Core #1 1457.55 1465.94 -- -- --
9/11a- 9 Core #2 1466.7 1470.92 -- -- --
9/11a- 9 Core #3 1471.27 1479.5 -- -- --
9/11a- 9X Cuttings 1152.14 1965.96 -- -- --
9/11a- 9Y Cuttings 786.38 2795.02 -- -- --
9/11a- 9Z Cuttings 786.38 2634.39 -- -- sidetrack 2

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
9/11a- 9 133.65480041503906 1538.61328125 12 0 2026-08-06 15:15:30.617236+00 View Log
9/11a- 9X 1150.6199951171875 1949.1864013671875 7 0 2026-08-06 15:15:33.2155+00 View Log
9/11a- 9Y 751.7891845703125 2776.118408203125 4 0 2026-08-06 15:15:34.312976+00 View Log
9/11a- 9Z 770.534423828125 2615.618896484375 4 0 2026-08-06 15:15:35.484183+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
9/11a- 9
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density CDEN Energective CorrectedLOGS 771.8982275999999 1533.58416168 4999
caliper CLD Energective CorrectedLOGS 757.1156104800001 1532.3649921600002 5088
comp_sonic DTC Energective CorrectedLOGS 776.92736664 1497.31341888 4715
deep_resistivity AT90 Energective CorrectedLOGS 771.8982275999999 1538.61330072 5032
density_correction CDRH Energective CorrectedLOGS 771.8982275999999 1536.1749312000002 5016
gamma_ray GRI Energective CorrectedLOGS 133.6548 1527.3358531200001 9033
med_resistivity AT20 Energective CorrectedLOGS 771.8982275999999 1538.61330072 5032
med_resistivity AT60 Energective CorrectedLOGS 771.8982275999999 1538.61330072 5032
med_resistivity AT30 Energective CorrectedLOGS 771.8982275999999 1538.61330072 5032
micro_resistivity MINV Energective CorrectedLOGS 769.6122580800001 1534.04136168 5017
micro_resistivity MNOR Energective CorrectedLOGS 769.6122580800001 1533.88896168 5016
neutron_por CNEU Energective CorrectedLOGS 771.8982275999999 1532.66979216 4993
pef CPEF Energective CorrectedLOGS 771.8982275999999 1534.34616168 5004
shallow_resistivity AT10 Energective CorrectedLOGS 771.8982275999999 1538.61330072 5032
sp SP Energective CorrectedLOGS 732.12231528 1538.61330072 5293
tvdss SS Energective CorrectedLOGS 133.5024 1538.61330072 9221
9/11a- 9X
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density LDL Energective CorrectedLOGS 1150.6200000000001 1943.54756832 3917
deep_resistivity ILD Energective CorrectedLOGS 1150.6200000000001 1946.9003073600002 5226
density_correction DRH Energective CorrectedLOGS 1150.6200000000001 1943.54756832 3917
gamma_ray GRI Energective CorrectedLOGS 1150.6200000000001 1949.1862768800002 5241
med_resistivity ILM Energective CorrectedLOGS 1150.6200000000001 1946.9003073600002 5226
micro_resistivity MSF Energective CorrectedLOGS 1150.6200000000001 1946.9003073600002 5226
neutron_por CNLC Energective CorrectedLOGS 1150.6200000000001 1940.1947988000002 3896
tvdss SS Energective CorrectedLOGS 1150.3152 1949.1862768800002 5243
9/11a- 9Y
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density LRHO Energective CorrectedLOGS 1158.5448000000001 2770.4796 10578
density_correction LDRH Energective CorrectedLOGS 1158.5448000000001 2770.4796 10578
gamma_ray GRLW Energective CorrectedLOGS 751.7892 2776.1184000000003 13284
neutron_por LTNP Energective CorrectedLOGS 1155.3444 2767.1268 10577
tvdss SS Energective CorrectedLOGS 751.6368 2776.4232 13287
9/11a- 9Z
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density LRHO Energective CorrectedLOGS 1245.5594088 2609.82762768 8900
density_correction DRH Energective CorrectedLOGS 1245.5594088 2609.82762768 8900
gamma_ray GRLW Energective CorrectedLOGS 770.5344 2615.61876672 12058
neutron_por LTNP Energective CorrectedLOGS 1241.9018697600002 2606.62725816 8874
tvdss SS Energective CorrectedLOGS 770.2296 2615.77116672 12111

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
9/11a- 9 50 1541.069 1515.814 G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_9\9_11a- 9\WELL_PATH\WDD_QC\9_11a-_9_wdd_WDD_FILE_1918267_DATACO_MAPPED.csv
9/11a- 9X 215 1966.570 1515.842 D:\BigSpatial\nsta_raw\CGG_Deviation\9-11a-9X 12334q-CGG_Deviation.xlsx
9/11a- 9Y 232 2798.064 1521.846 G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_9\9_11a- 9Y\WELL_PATH\WDD_QC\9_11a-_9Y_wdd_WDD_FILE_1918268_DATACO_MAPPED.csv
9/11a- 9Z 211 2634.386 1460.877 G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_9\9_11a- 9Z\WELL_PATH\WDD_QC\9_11a-_9Z_wdd_WDD_FILE_1918269_DATACO_MAPPED.csv

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