15/21a-E1

Present

Well Header

Well No
15/21a-E1
NSTA DEN No
5496
Well Name
--
Drill Seq No
1
Quadrant / Block
15 / 21 a
Surface Location
58.247947, 0.177671
Source Datum
ED50
Subsea Well
Yes
Platform
E
Slot No
EA
Operator
CNOOC PETROLEUM EUROPE LIMITED
Original Operator
--
Sub Area Operator
CNOOC PETROLEUM EUROPE LIMITED
Licence No
P218
Licence Type
Production
Spud Date
1995-04-03
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (3)

15/21a-E1 Original
Current Intent
Development
Original Intent
Development
Flow Class
Oil Well
Dev Type
Producer
Convention
--
Primary Target
--
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
26.213
Ground Elev (m)
--
Water Depth (m)
140.21
TD MD (m)
4401.920
TD TVDSS (m)
3808.622
TD Datum Depth (m)
26.213
TD Datum Type
Kelly Bushing
Spud Date
1995-04-03
TD Reached
1995-05-12
Completion Date
1995-05-12
Release Date
1999-05-12
15/21a-E1Y Sidetrack Y parent: 15/21a-E1
Completed (Shut In) Interpreted Data Survey
Current Intent
Development
Original Intent
Development
Flow Class
Oil Well
Dev Type
Producer
Convention
--
Primary Target
--
Well Seq
WB3
Datum Type
Kelly Bushing
Datum Elev (m)
26.213
Ground Elev (m)
--
Water Depth (m)
140.21
TD MD (m)
4563.470
TD TVDSS (m)
4070.909
TD Datum Depth (m)
26.213
TD Datum Type
Kelly Bushing
Spud Date
1995-08-14
TD Reached
1995-08-28
Completion Date
1995-09-27
Release Date
1999-09-27
15/21a-E1Z Sidetrack Z parent: 15/21a-E1
Current Intent
Development
Original Intent
Development
Flow Class
Oil Well
Dev Type
Producer
Convention
--
Primary Target
--
Well Seq
WB2
Datum Type
Kelly Bushing
Datum Elev (m)
26.213
Ground Elev (m)
--
Water Depth (m)
140.21
TD MD (m)
4233.670
TD TVDSS (m)
3894.707
TD Datum Depth (m)
26.213
TD Datum Type
Kelly Bushing
Spud Date
1995-07-07
TD Reached
1995-08-01
Completion Date
1995-08-09
Release Date
1999-08-09

Formation Tops (0)

No formation tops ingested for this well.

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
15/21a-E1 0 0 0 0 0 0 0 1 0 View
15/21a-E1Y 0 0 0 0 0 0 3 1 0 View
15/21a-E1Z 0 0 0 0 0 0 2 1 0 View

Hydrocarbon Occurrence (0)

No hydrocarbon shows or DSTs recorded for this well.

Rock Samples (8)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
15/21a-E1 Cuttings 701.04 4401.31 -- -- in as 15/21a-SP1
15/21a-E1Y Cuttings 3471.67 4562.86 -- -- --
15/21a-E1Y Core #1 4206.85 4240.68 -- -- --
15/21a-E1Y Core #2 4240.68 4265.37 -- -- --
15/21a-E1Y Core #3 4266.59 4284.88 -- -- --
15/21a-E1Z Cuttings 1627.63 4230.62 -- -- some bags illegible
15/21a-E1Z Core #1 4020.31 4050.06 -- -- --
15/21a-E1Z Core #2 4051.1 4083.92 -- -- --

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
15/21a-E1Z 2519.172119140625 4071.9755859375 1 0 2026-08-06 08:25:07.856269+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
15/21a-E1Z
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
gamma_ray GR OGA Batch Unzipped 2519.172 4071.9756 5592

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
15/21a-E1 0 -- -- --
15/21a-E1Y 0 -- -- --
15/21a-E1Z 328 4233.672 3894.699 G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_15\15_21a-E1Z\WELL_PATH\WDD_QC\15_21a-E1Z_wdd_WDD_FILE_1678387_DATACO_MAPPED.csv

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