Well Data Manager / Well Summary / 207/01a- 4

207/01a- 4

Decommissioned

Well Header

Well No
207/01a- 4
NSTA DEN No
4153
Well Name
--
Drill Seq No
4
Quadrant / Block
207 / 1 a
Surface Location
60.892189, -1.971429
Source Datum
ED50
Subsea Well
Unknown
Platform
--
Slot No
--
Operator
TEXACO NORTH SEA U.K. LIMITED
Original Operator
TEXACO BRITAIN LIMITED
Sub Area Operator
TEXACO NORTH SEA U.K. LIMITED
Licence No
P183
Licence Type
Production
Spud Date
1990-08-11
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (2)

207/01a- 4 Original
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Oil Show
Dev Type
--
Convention
--
Primary Target
B
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
25.298
Ground Elev (m)
--
Water Depth (m)
128.02
TD MD (m)
1600.200
TD TVDSS (m)
0.000
TD Datum Depth (m)
25.298
TD Datum Type
Kelly Bushing
Spud Date
1990-08-11
TD Reached
1990-08-30
Completion Date
1990-09-05
Release Date
1994-09-05
207/01a- 4Z Sidetrack Z parent: 207/01a- 4
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Dry Hole
Dev Type
--
Convention
--
Primary Target
B
Well Seq
WB2
Datum Type
Kelly Bushing
Datum Elev (m)
25.298
Ground Elev (m)
--
Water Depth (m)
128.02
TD MD (m)
2656.942
TD TVDSS (m)
2271.370
TD Datum Depth (m)
25.298
TD Datum Type
Kelly Bushing
Spud Date
1990-09-05
TD Reached
1990-10-01
Completion Date
1990-10-14
Release Date
1994-10-14

Formation Tops (7)

Wellbore Formation Era MD (m) TVDSS (m) Provider
207/01a- 4 Moray Mesozoic 841.000 662.312 Ternan Atlantic Margin
Shetland Mesozoic 969.000 790.297 Ternan Atlantic Margin
207/01a- 4Z Moray Mesozoic 857.000 674.569 Ternan Atlantic Margin
Shetland Mesozoic 977.000 788.274 Ternan Atlantic Margin
Victory 2263.000 1773.378 Ternan Atlantic Margin
Humber Mesozoic 2581.000 2033.087 Ternan Atlantic Margin
Clair 2605.000 2053.165 Ternan Atlantic Margin

Lithology Intervals

207/01a- 4Z Curve: SANDCOUNT 75 intervals  ·  MD 573.024 – 1617.726 m G:/NSTA_BigFiles/NSTA_Packages/Lloyds_Register/WoS_ArcGIS...
Limestone (121)
Sandstone (100)
Igneous (2)
Tuff (1)
207/01a- 4Z Curve: SANDCOUNT 149 intervals  ·  MD 618.896 – 2678.735 m G:/NSTA_BigFiles/NSTA_Packages/Lloyds_Register/WoS_ArcGIS...
Limestone (121)
Sandstone (100)
Igneous (2)
Tuff (1)

Interpreted Data Inventory (LR / WellStrat)

Open Interpreted Data Log
Wellbore Groups Formations Members Strat Intervals Tops HC Occ Core Cuttings DSTs
207/01a- 4 0 0 0 5 2 3 1 1 0 View
207/01a- 4Z 6 5 1 9 5 3 0 1 0 View

Hydrocarbon Occurrence (1)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
207/01a- 4 Oil shows OS SHEQ 969.264 -- 616 m thick

Rock Samples (3)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
207/01a- 4 Cuttings 905.26 1624.58 -- -- .
207/01a- 4 Core #1 1613.31 1614.83 -- -- --
207/01a- 4Z Cuttings 621.79 2682.24 -- -- .

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
207/01a- 4 153.3144073486328 1609.343994140625 10 0 2026-08-06 20:40:55.813478+00 View Log
207/01a- 4Z 618.7440185546875 2682.239990234375 9 0 2026-08-06 10:07:16.39168+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
207/01a- 4
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density DENS UKCS JDWL 30th Round 1386.8400000000001 1609.344 1461
caliper CALI UKCS JDWL 30th Round 1380.7440000000001 1580.0832 1309
comp_sonic DTC UKCS JDWL 30th Round 1402.0800000000002 1597.7616 1285
deep_resistivity RDEP UKCS JDWL 30th Round 1396.8984 1607.5152 1383
density_correction DENC UKCS JDWL 30th Round 1386.8400000000001 1609.344 1461
gamma_ray GR UKCS JDWL 30th Round 153.3144 1604.4672 9523
micro_resistivity RMIC UKCS JDWL 30th Round 1386.8400000000001 1579.7784000000001 1267
neutron_por NEUT UKCS JDWL 30th Round 1386.8400000000001 1609.344 1461
shallow_resistivity RSHAL UKCS JDWL 30th Round 1396.8984 1607.5152 1383
sp SP UKCS JDWL 30th Round 1386.8400000000001 1580.6928 1273
207/01a- 4Z
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density DENS UKCS JDWL 30th Round 1693.4688 2682.2400000000002 6489
caliper CALI UKCS JDWL 30th Round 1686.4584 2682.2400000000002 6535
comp_sonic DTC UKCS JDWL 30th Round 622.4016 2670.6576 13287
deep_resistivity RDEP UKCS JDWL 30th Round 618.744 2682.2400000000002 13346
density_correction DENC UKCS JDWL 30th Round 1693.4688 2682.2400000000002 6489
gamma_ray GR UKCS JDWL 30th Round 618.744 2682.2400000000002 13364
med_resistivity RMED UKCS JDWL 30th Round 618.744 2682.2400000000002 13346
neutron_por NEUT UKCS JDWL 30th Round 1693.4688 2682.2400000000002 6489
sp SP UKCS JDWL 30th Round 618.744 2682.2400000000002 13374

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
207/01a- 4 47 1380.884 1202.174 G:\NSTA_BigFiles\NSTA_Packages\UKCS_JDWL_30thRound\WOS\207_01a-4_DEVIATION_SURVEY_QC.xlsm
207/01a- 4Z 95 2672.755 2110.087 G:\NSTA_BigFiles\NSTA_Packages\UKCS_JDWL_30thRound\WOS\207_01a-4Z_DEVIATION_SURVEY_QC.xlsm

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