Well Data Manager / Well Summary / 21/18- 1

21/18- 1

Decommissioned

Well Header

Well No
21/18- 1
NSTA DEN No
--
Well Name
--
Drill Seq No
1
Quadrant / Block
21 / 18
Surface Location
57.337589, 0.465328
Source Datum
ED50
Subsea Well
Unknown
Platform
--
Slot No
--
Operator
CNR INTERNATIONAL (U.K.) LIMITED
Original Operator
RANGER OIL LTD
Sub Area Operator
CNR INTERNATIONAL (U.K.) LIMITED
Licence No
P229
Licence Type
Production
Spud Date
1975-07-05
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (2)

21/18- 1 Original
Abandoned Phase 3 Survey
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Dry Hole
Dev Type
--
Convention
--
Primary Target
--
Well Seq
--
Datum Type
--
Datum Elev (m)
--
Ground Elev (m)
--
Water Depth (m)
84.43
TD MD (m)
217.630
TD TVDSS (m)
191.720
TD Datum Depth (m)
--
TD Datum Type
--
Spud Date
1975-07-05
TD Reached
1975-07-06
Completion Date
1975-07-07
Release Date
1979-07-07
21/18- 1A Sidetrack A
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)
26.213
Ground Elev (m)
--
Water Depth (m)
84.43
TD MD (m)
2112.569
TD TVDSS (m)
2086.661
TD Datum Depth (m)
26.213
TD Datum Type
Kelly Bushing
Spud Date
1975-07-07
TD Reached
1975-07-22
Completion Date
1975-07-23
Release Date
1979-07-23

Formation Tops (13)

Wellbore Formation Era MD (m) TVDSS (m) Provider
21/18- 1A Horda Cenozoic 1535.000 1508.787 Lloyds Register
Stronsay Cenozoic 1535.000 1508.787 Lloyds Register
Upper Tay Sandstone 1687.000 1660.787 Lloyds Register
Lower Tay Sandstone 1845.000 1818.787 Lloyds Register
Balder Cenozoic 1926.000 1899.787 Lloyds Register
Balder Tuff Cenozoic 1926.000 1899.787 Lloyds Register
Moray Mesozoic 1926.000 1899.787 Lloyds Register
Sele Mesozoic 1945.000 1918.787 Lloyds Register
Lista Mesozoic 1969.000 1942.787 Lloyds Register
Montrose Mesozoic 1969.000 1942.787 Lloyds Register
Maureen Mesozoic 1999.000 1972.787 Lloyds Register
Chalk Mesozoic 2088.000 2061.787 Lloyds Register
Ekofisk Mesozoic 2088.000 2061.787 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
21/18- 1 0 0 0 0 0 0 0 0 0
21/18- 1A 4 6 3 1 13 1 3 1 0 View

Hydrocarbon Occurrence (0)

No hydrocarbon shows or DSTs recorded for this well.

Rock Samples (9)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
21/18- 1A Cuttings 389.84 2103.12 -- -- .
21/18- 1A Core #1 1874.52 1878.42 CORE LABORATORIES INC. NO ANALYSIS loose in polybags .
21/18- 1A ↳ Core Plug #1 1874.52 -- CORE LABORATORIES INC. NO ANALYSIS --
21/18- 1A Core #2 1879.4 1880.62 -- -- loose in polybags .
21/18- 1A Core #3 1913.84 1916.89 φ 31.7% (n=3) · Kh 2975.7 mD (n=3) · Kv 2656.7 mD (n=3) · Density 2.64 (n=3) · CORE LABORATORIES INC. SHALE - NO ANALYSIS | SS, CLR-LT GY, F-MG MOD W STD, MOD CONS, SUBANG-SUBRDD, TR MICA, OCC ARG INCLS.; SS, LT GY-CLR-OCC LT GY TN, FG, MOD CONS, F W STD, TR MICA, OCC ARG INCLS. incl 6 cloth bags .
21/18- 1A ↳ Core Plug #3 1916.125 -- CORE LABORATORIES INC. SHALE - NO ANALYSIS --
21/18- 1A ↳ Plug 01 1916.278 -- φ 30.1% · Kh 2051.0 mD · Kv 1645.0 mD · Density 2.64 · CORE LABORATORIES INC. SS, LT GY-CLR-OCC LT GY TN, FG, MOD CONS, F W STD, TR MICA, OCC ARG INCLS. --
21/18- 1A ↳ Plug 02 1916.582 -- φ 31.8% · Kh 3414.0 mD · Kv 3500.0 mD · Density 2.64 · CORE LABORATORIES INC. SS, CLR-LT GY, F-MG MOD W STD, MOD CONS, SUBANG-SUBRDD, TR MICA, OCC ARG INCLS. --
21/18- 1A ↳ Plug 03 1916.887 -- φ 33.2% · Kh 3462.0 mD · Kv 2825.0 mD · Density 2.63 · CORE LABORATORIES INC. SS, CLR-LT GY, F-MG MOD W STD, MOD CONS, SUBANG-SUBRDD, TR MICA, OCC ARG INCLS. --

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
21/18- 1A 99.05999755859375 2112.72119140625 8 0 2026-08-06 10:16:22.69215+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
21/18- 1A
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density RHOB CGG Digital Well Logs 997.1532000000001 2112.7212 7321
caliper CALI CGG Digital Well Logs 382.0668 2112.4164 11336
comp_sonic DT CGG Digital Well Logs 381.1524 2111.1972 11333
deep_resistivity ILD CGG Digital Well Logs 384.048 2112.264 8942
deep_resistivity LLD CGG Digital Well Logs 1934.1084 2107.692 1140
density_correction DRHO CGG Digital Well Logs 997.1532000000001 2112.7212 7321
gamma_ray GRL CGG Digital Well Logs 1933.8036000000002 2109.8256 1156
gamma_ray GR CGG Digital Well Logs 99.06 2107.0824000000002 13177
gamma_ray GRD CGG Digital Well Logs 967.1304 2104.7964 7466
shallow_resistivity LLS CGG Digital Well Logs 1933.8036000000002 2107.8444 1143
sp SP CGG Digital Well Logs 384.2004 2112.4164 8942

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
21/18- 1 0 -- -- --
21/18- 1A 0 -- -- --

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