15/18- 1

Decommissioned

Well Header

Well No
15/18- 1
NSTA DEN No
637
Well Name
--
Drill Seq No
1
Quadrant / Block
15 / 18
Surface Location
58.456982, 0.415831
Source Datum
ED50
Subsea Well
No
Platform
--
Slot No
--
Operator
SHELL U.K. LIMITED
Original Operator
--
Sub Area Operator
SHELL U.K. LIMITED
Licence No
P233
Licence Type
Production
Spud Date
1974-09-13
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

15/18- 1 Original
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Oil Show
Dev Type
--
Convention
--
Primary Target
--
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
23.774
Ground Elev (m)
--
Water Depth (m)
143.26
TD MD (m)
2976.370
TD TVDSS (m)
2949.056
TD Datum Depth (m)
23.774
TD Datum Type
Kelly Bushing
Spud Date
1974-09-13
TD Reached
1974-11-08
Completion Date
1974-11-25
Release Date
1978-11-25

Formation Tops (34)

Wellbore Formation Era MD (m) TVDSS (m) Provider
15/18- 1 Grid Sandstone Cenozoic 651.000 627.205 Lloyds Register
Horda Cenozoic 651.000 627.205 Lloyds Register
Stronsay Cenozoic 651.000 627.205 Lloyds Register
Middle Mousa 754.000 730.192 Lloyds Register
Horda Cenozoic 1098.000 1074.128 Lloyds Register
Balder Cenozoic 1245.000 1221.117 Lloyds Register
Moray Mesozoic 1245.000 1221.117 Lloyds Register
Balder Tuff Cenozoic 1249.000 1225.117 Lloyds Register
Upper Dornoch Sandstone Cenozoic 1345.000 1321.110 Lloyds Register
Dornoch Mesozoic 1345.000 1321.110 Lloyds Register
Lower Dornoch Sandstone Cenozoic 1471.000 1447.094 Lloyds Register
Lista Mesozoic 1540.000 1516.081 Lloyds Register
Montrose Mesozoic 1540.000 1516.081 Lloyds Register
Balmoral Sandstone Cenozoic 1566.000 1542.075 Lloyds Register
Andrew Sandstone Cenozoic 1828.000 1803.985 Lloyds Register
Maureen Mesozoic 2134.000 2109.535 Lloyds Register
Maureen Sandstone Mesozoic 2143.000 2118.520 Lloyds Register
Chalk Mesozoic 2283.000 2258.265 Lloyds Register
Ekofisk Mesozoic 2283.000 2258.265 Lloyds Register
Upper Cretaceous Chalk Mesozoic 2301.000 2276.227 Lloyds Register
Valhall Mesozoic 2588.000 2562.755 Lloyds Register
Cromer Knoll Mesozoic 2588.000 2562.755 Lloyds Register
Humber Mesozoic 2607.000 2581.700 Lloyds Register
Piper Mesozoic 2607.000 2581.700 Lloyds Register
Pentland Mesozoic 2680.000 2654.490 Lloyds Register
Fladen Mesozoic 2680.000 2654.490 Lloyds Register
Rattray Volcanics Mesozoic 2708.000 2682.410 Lloyds Register
Heron Palaeozoic 2784.000 2758.191 Lloyds Register
Smith Bank Mesozoic 2784.000 2758.191 Lloyds Register
Zechstein Palaeozoic 2824.000 2798.052 Lloyds Register
Zechstein Undifferentiated 2824.000 2798.052 Lloyds Register
Kupferschiefer Palaeozoic 2904.000 2877.409 Lloyds Register
Carboniferous Palaeozoic 2906.000 2879.389 Lloyds Register
Carboniferous Undifferentiated Palaeozoic 2906.000 2879.389 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
15/18- 1 10 16 8 19 34 3 5 1 0 View

Hydrocarbon Occurrence (3)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
15/18- 1 Oil shows OS FNSS 1338.0720000000001 -- 182 m thick
15/18- 1 Oil shows OS CGCF 1520.3424 -- 24 m thick
15/18- 1 Oil shows OS HASF 1544.4216000000001 -- 132 m thick

Rock Samples (29)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
15/18- 1 Cuttings 496.82 2950.46 -- -- .
15/18- 1 Core #1 1520.95 1530.1 CORE LABORATORIES INC. NO ANALYSIS incl 4 polybags debris .
15/18- 1 ↳ Core Plug #1 1520.952 -- CORE LABORATORIES INC. NO ANALYSIS --
15/18- 1 ↳ Core Plug #1 1528.267 -- CORE LABORATORIES INC. NO ANALYSIS --
15/18- 1 ↳ Core Plug #1 1528.267 -- CORE LABORATORIES INC. NO ANALYSIS --
15/18- 1 Core #2 1530.1 1533.75 -- -- incl 1 polybags debris .
15/18- 1 Core #3 1626.41 1628.85 CORE LABORATORIES INC. NO ANALYSIS in 12 special bags .
15/18- 1 ↳ Core Plug #3 1626.413 -- CORE LABORATORIES INC. NO ANALYSIS --
15/18- 1 Core #4 2954.12 2955.04 φ 12.9% (n=2) · Kh 5.5 mD (n=2) · Density 2.67 (n=2) · CORE LABORATORIES INC. SS/SLTST, RUBBLE - NO ANALYSIS | VFG SS, LT GY, W STD, F W CMTD.; VFG SS, LT PK, W STD, V W CMTD. .
15/18- 1 ↳ Plug 01 2954.122 -- φ 18.6% · Kh 11.0 mD · Density 2.65 · CORE LABORATORIES INC. VFG SS, LT GY, W STD, F W CMTD. --
15/18- 1 ↳ Plug 02 2954.426 -- φ 7.3% · Kh 0.1 mD · Density 2.70 · CORE LABORATORIES INC. VFG SS, LT PK, W STD, V W CMTD. --
15/18- 1 ↳ Plug 03 2954.731 -- CORE LABORATORIES INC. SS/SLTST, RUBBLE - NO ANALYSIS --
15/18- 1 ↳ Plug 04 2955.036 -- CORE LABORATORIES INC. SS/SLTST, RUBBLE - NO ANALYSIS --
15/18- 1 Core #5 2969.06 2973.93 φ 14.7% (n=13) · Kh 20.2 mD (n=13) · Density 2.68 (n=13) · CORE LABORATORIES INC. FISSILE - MICACEOUS SHALE - NO ANALYSIS; MICACEOUS SILTY SHALE - NO ANALYSIS | NG SS, WH, MOD STD, SH, SUBRDD, F FRI.; SLTST, DK GY, W STD, V W CMTD, MICA.; VFG SS, PK, W STD, W CMTD.; VFG SS, WH-LT GY, W STD, W CMTD, F W CMTD, F W CMTD, F FRAC.; VFG SS, WH-LT GY, W STD, W CMTD, F W CMTD.; VFG SS, WH-LT GY, W STD, W CMTD.; VFG SS-SLTST, RD-BRN, W STD, W CMTD + MICA.; VFG SS-SLTST, RD-BRN, W STD, W CMTD, ANH.; VFG SS-SLTST, RD-BRN, W STD, W CMTD, CALC FRAC.; VFG SS-SLTST, RD-BRN, W STD, W CMTD. .
15/18- 1 ↳ Plug 06 2969.362 -- CORE LABORATORIES INC. MICACEOUS SILTY SHALE - NO ANALYSIS --
15/18- 1 ↳ Plug 07 2969.666 -- φ 3.5% · Kh 0.0 mD · Density 2.67 · CORE LABORATORIES INC. SLTST, DK GY, W STD, V W CMTD, MICA. --
15/18- 1 ↳ Plug 08 2969.971 -- φ 5.3% · Kh 0.0 mD · Density 2.71 · CORE LABORATORIES INC. SLTST, DK GY, W STD, V W CMTD, MICA. --
15/18- 1 ↳ Plug 09 2970.276 -- φ 11.8% · Kh 0.2 mD · Density 2.72 · CORE LABORATORIES INC. VFG SS-SLTST, RD-BRN, W STD, W CMTD, CALC FRAC. --
15/18- 1 ↳ Plug 10 2970.581 -- CORE LABORATORIES INC. FISSILE - MICACEOUS SHALE - NO ANALYSIS --
15/18- 1 ↳ Plug 11 2970.886 -- φ 14.8% · Kh 0.0 mD · Density 2.77 · CORE LABORATORIES INC. VFG SS-SLTST, RD-BRN, W STD, W CMTD, ANH. --
15/18- 1 ↳ Plug 12 2971.19 -- φ 11.4% · Kh 0.2 mD · Density 2.70 · CORE LABORATORIES INC. VFG SS-SLTST, RD-BRN, W STD, W CMTD. --
15/18- 1 ↳ Plug 13 2971.495 -- φ 12.1% · Kh 0.2 mD · Density 2.70 · CORE LABORATORIES INC. VFG SS-SLTST, RD-BRN, W STD, W CMTD + MICA. --
15/18- 1 ↳ Plug 14 2971.876 -- φ 16.6% · Kh 1.9 mD · Density 2.65 · CORE LABORATORIES INC. VFG SS, PK, W STD, W CMTD. --
15/18- 1 ↳ Plug 15 2972.105 -- φ 15.8% · Kh 1.0 mD · Density 2.67 · CORE LABORATORIES INC. VFG SS, PK, W STD, W CMTD. --
15/18- 1 ↳ Plug 16 2972.41 -- φ 15.7% · Kh 6.1 mD · Density 2.67 · CORE LABORATORIES INC. VFG SS, WH-LT GY, W STD, W CMTD. --
15/18- 1 ↳ Plug 17 2972.714 -- φ 19.9% · Kh 79.0 mD · Density 2.65 · CORE LABORATORIES INC. VFG SS, WH-LT GY, W STD, W CMTD, F W CMTD. --
15/18- 1 ↳ Plug 18 2973.019 -- φ 20.6% · Kh 75.0 mD · Density 2.66 · CORE LABORATORIES INC. VFG SS, WH-LT GY, W STD, W CMTD, F W CMTD, F W CMTD, F FRAC. --
15/18- 1 ↳ Plug 19 2973.324 -- φ 17.4% · Kh 1.5 mD · Density 2.67 · CORE LABORATORIES INC. VFG SS, WH-LT GY, W STD, W CMTD, F W CMTD, F W CMTD, F FRAC. --
15/18- 1 ↳ Plug 20 2973.681 -- φ 25.7% · Kh 97.0 mD · Density 2.63 · CORE LABORATORIES INC. NG SS, WH, MOD STD, SH, SUBRDD, F FRI. --

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
15/18- 1 471.8304138183594 2968.599609375 8 0 2026-08-06 08:17:29.574393+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
15/18- 1
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
caliper CALI OGA Batch Unzipped 471.8304 2968.5996 16369
comp_sonic DT OGA Batch Unzipped 473.0496 2968.1424 16349
deep_resistivity RES_DEP OGA Batch Unzipped 1278.9408 1706.2704 2805
gamma_ray GR OGA Batch Unzipped 471.8304 2968.5996 16349
micro_resistivity RES_MIC OGA Batch Unzipped 1278.9408 1782.4704000000002 3305
neutron_por NEU OGA Batch Unzipped 1278.3312 2968.5996 11082
shallow_resistivity RES_SLW OGA Batch Unzipped 473.0496 2968.1424 16346
sp SP OGA Batch Unzipped 473.0496 2968.1424 9202

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
15/18- 1 25 2976.372 2949.047 G:\NSTA_BigFiles\OGA_Batch_Unzipped\UK_15\15_18- 1\WELL_PATH\WDD_QC\15_18-_1_wdd_WDD_FILE_1676467_DATACO_MAPPED.csv

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