Well Data Manager / Well Summary / 21/29b- 1

21/29b- 1

Decommissioned

Well Header

Well No
21/29b- 1
NSTA DEN No
1148
Well Name
--
Drill Seq No
1
Quadrant / Block
21 / 29 b
Surface Location
57.040806, 0.714775
Source Datum
ED50
Subsea Well
No
Platform
--
Slot No
--
Operator
PREMIER OIL (ENCORE PETROLEUM) LIMITED
Original Operator
--
Sub Area Operator
PREMIER OIL (ENCORE PETROLEUM) LIMITED
Licence No
P215
Licence Type
Production
Spud Date
1978-01-26
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

21/29b- 1 Original
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Dry Hole
Dev Type
--
Convention
--
Primary Target
--
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
26.822
Ground Elev (m)
--
Water Depth (m)
88.39
TD MD (m)
2076.298
TD TVDSS (m)
1919.630
TD Datum Depth (m)
26.822
TD Datum Type
Kelly Bushing
Spud Date
1978-01-26
TD Reached
1978-02-13
Completion Date
1978-02-15
Release Date
1982-02-15

Formation Tops (14)

Wellbore Formation Era MD (m) TVDSS (m) Provider
21/29b- 1 Horda Cenozoic 1340.000 1313.154 Lloyds Register
Stronsay Cenozoic 1340.000 1313.154 Lloyds Register
Balder Cenozoic 1607.000 1580.136 Lloyds Register
Moray Mesozoic 1607.000 1580.136 Lloyds Register
Balder Tuff Cenozoic 1615.000 1588.135 Lloyds Register
Sele Mesozoic 1629.000 1602.134 Lloyds Register
Forties Sandstone Mesozoic 1716.000 1689.127 Lloyds Register
Lista Mesozoic 1764.000 1737.124 Lloyds Register
Montrose Mesozoic 1764.000 1737.124 Lloyds Register
Balmoral Sandstone Cenozoic 1811.000 1784.120 Lloyds Register
Maureen Mesozoic 1885.000 1858.114 Lloyds Register
Maureen Sandstone Mesozoic 1885.000 1858.114 Lloyds Register
Chalk Mesozoic 1946.000 1919.109 Lloyds Register
Upper Cretaceous Chalk Mesozoic 1946.000 1919.109 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
21/29b- 1 4 6 4 14 14 1 0 1 0 View

Hydrocarbon Occurrence (0)

No hydrocarbon shows or DSTs recorded for this well.

Rock Samples (1)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
21/29b- 1 Cuttings 466.34 2103.12 -- -- .

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
21/29b- 1 111.55680084228516 2102.35791015625 9 0 2026-08-06 10:24:20.445468+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
21/29b- 1
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density RHOB CGG Digital Well Logs 1645.4628 2102.358 2999
caliper CALI CGG Digital Well Logs 1642.872 2102.358 3016
comp_sonic DT CGG Digital Well Logs 470.154 2090.928 10596
deep_resistivity ILD CGG Digital Well Logs 469.2396 2100.5292 10705
density_correction DRHO CGG Digital Well Logs 1645.4628 2102.358 2999
gamma_ray GRD CGG Digital Well Logs 1645.4628 2102.358 2999
gamma_ray GR CGG Digital Well Logs 111.55680000000001 2100.5292 13052
neutron_por NPHI CGG Digital Well Logs 1646.2248000000002 2102.358 2994
shallow_resistivity SFL CGG Digital Well Logs 468.9348 2100.6816 10708
sp SP CGG Digital Well Logs 468.7824 2100.5292 10708

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
21/29b- 1 10 2103.120 2076.215 D:\BigSpatial\nsta_raw\CGG_Deviation\21-29b-1 1075s-CGG-deviation.xls

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