Well Data Manager / Well Summary / 21/30- 12

21/30- 12

Decommissioned

Well Header

Well No

21/30- 12

NSTA DEN No

2450

Well Name

Drill Seq No

Quadrant / Block

21 / 30

Surface Location

57.037055, 0.833933

Source Datum

ED50

Subsea Well

Platform

Slot No

Operator

PERENCO UK LIMITED

Original Operator

Sub Area Operator

PERENCO UK LIMITED

Licence No

P13

Licence Type

Production

Spud Date

1984-07-26

Source File

nsta_feature_service

Imported

2026-05-22 15:28

Wellbores (1)

21/30- 12 Original

Abandoned Phase 3 View Log Interpreted Data Survey

Current Intent

Exploration

Original Intent

Exploration

Flow Class

Oil Well

Dev Type

Convention

Primary Target

Well Seq

WB1

Datum Type

Kelly Bushing

Datum Elev (m)

24.994

Ground Elev (m)

Water Depth (m)

92.35

TD MD (m)

2507.285

TD TVDSS (m)

0.000

TD Datum Depth (m)

24.994

TD Datum Type

Kelly Bushing

Spud Date

1984-07-26

TD Reached

1984-09-03

Completion Date

1984-09-19

Release Date

1988-09-19

Formation Tops (22)

Wellbore	Formation	Era	MD (m)	TVDSS (m)	Provider
21/30- 12	Stronsay	Cenozoic	1576.000	1550.946	Lloyds Register
	Horda	Cenozoic	1576.000	1550.946	Lloyds Register
	Lower Tay Sandstone		1754.000	1728.917	Lloyds Register
	Balder	Cenozoic	1802.000	1776.913	Lloyds Register
	Moray	Mesozoic	1802.000	1776.913	Lloyds Register
	Montrose	Mesozoic	1822.000	1796.912	Lloyds Register
	Lista	Mesozoic	1822.000	1796.912	Lloyds Register
	Maureen	Mesozoic	1865.000	1839.911	Lloyds Register
	Chalk	Mesozoic	1916.000	1890.910	Lloyds Register
	Ekofisk	Mesozoic	1916.000	1890.910	Lloyds Register
	Upper Cretaceous Chalk	Mesozoic	1933.000	1907.910	Lloyds Register
	Cromer Knoll	Mesozoic	2232.000	2206.901	Lloyds Register
	Rodby	Mesozoic	2232.000	2206.901	Lloyds Register
	Sola		2241.000	2215.901	Lloyds Register
	Valhall	Mesozoic	2293.000	2267.895	Lloyds Register
	Humber	Mesozoic	2316.000	2290.894	Lloyds Register
	Kimmeridge Clay		2316.000	2290.894	Lloyds Register
	Fulmar	Mesozoic	2432.000	2406.831	Lloyds Register
	Skagerrak	Mesozoic	2459.000	2433.806	Lloyds Register
	Heron	Palaeozoic	2459.000	2433.806	Lloyds Register
	Turbot Anhydrite	Palaeozoic	2476.000	2450.792	Lloyds Register
	Zechstein	Palaeozoic	2476.000	2450.792	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
21/30- 12	8	13	1	39	22	3	6	1	2	View

Hydrocarbon Occurrence (4)

Wellbore	Category	Code	Formation / Litho	Top MD (m)	Base MD (m)	Notes
21/30- 12	Mixed	OG	Strathtay Formation	1734.9216000000001	--	67 m thick
21/30- 12	DST	DST 2	--	1779.4	1789.2	Label / Frigg
21/30- 12	DST	DST 1	--	1782.8	1789.2	Not used for labelling, multiple DSTs in same play / Frigg
21/30- 12	Oil shows	OS	Fulmar Formation	2431.9992	--	27 m thick

Rock Samples (35)

Wellbore	Sample	Top MD (m)	Base MD (m)	Key Lab Results	Comments	Notes
21/30- 12	Cuttings	237.74	2505.46	--	--	.
21/30- 12	Core #1	1764.91	1776.07	φ 34.8% (n=4) · Kh 3687.5 mD (n=4) · Density 2.65 (n=4) · CORE LABORATORIES	--	.
21/30- 12	↳ Plug 01	1766.225	--	φ 36.2% · Kh 2220.0 mD · Density 2.62 · CORE LABORATORIES	--	--
21/30- 12	↳ Plug 02	1766.987	--	φ 32.1% · Kh 4150.0 mD · Density 2.68 · CORE LABORATORIES	--	--
21/30- 12	↳ Plug 03	1767.23	--	φ 34.8% · Kh 2260.0 mD · Density 2.64 · CORE LABORATORIES	--	--
21/30- 12	↳ Plug 04	1767.627	--	φ 35.9% · Kh 6120.0 mD · Density 2.64 · CORE LABORATORIES	--	--
21/30- 12	Core #2	1776.07	1781.1	φ 34.9% (n=7) · Kh 5462.9 mD (n=7) · Density 2.64 (n=7) · CORE LABORATORIES	--	.
21/30- 12	↳ Plug 05	1776.466	--	φ 36.3% · Kh 4660.0 mD · Density 2.65 · CORE LABORATORIES	--	--
21/30- 12	↳ Plug 06	1776.74	--	φ 36.2% · Kh 4730.0 mD · Density 2.62 · CORE LABORATORIES	--	--
21/30- 12	↳ Plug 07	1778.66	--	φ 36.4% · Kh 6710.0 mD · Density 2.63 · CORE LABORATORIES	--	--
21/30- 12	↳ Plug 08	1779.636	--	φ 35.0% · Kh 6370.0 mD · Density 2.63 · CORE LABORATORIES	--	--
21/30- 12	↳ Plug 09	1780.215	--	φ 31.7% · Kh 6400.0 mD · Density 2.64 · CORE LABORATORIES	--	--
21/30- 12	↳ Plug 10	1780.428	--	φ 33.3% · Kh 3920.0 mD · Density 2.66 · CORE LABORATORIES	--	--
21/30- 12	↳ Plug 11	1780.733	--	φ 35.2% · Kh 5450.0 mD · Density 2.66 · CORE LABORATORIES	--	--
21/30- 12	Core #3	1781.86	1784.12	φ 32.5% (n=3) · Kh 4433.3 mD (n=3) · Density 2.65 (n=3) · CORE LABORATORIES	--	.
21/30- 12	↳ Plug 12	1781.952	--	φ 31.4% · Kh 2690.0 mD · Density 2.66 · CORE LABORATORIES	--	--
21/30- 12	↳ Plug 13	1782.409	--	φ 33.1% · Kh 4730.0 mD · Density 2.63 · CORE LABORATORIES	--	--
21/30- 12	↳ Plug 14	1783.05	--	φ 33.0% · Kh 5880.0 mD · Density 2.65 · CORE LABORATORIES	--	--
21/30- 12	Core #4	1919.02	1928.16	CORE LABORATORIES	NO ANALYSIS	.
21/30- 12	↳ Core Plug #4	1919.021	--	CORE LABORATORIES	NO ANALYSIS	--
21/30- 12	Core #5	2435.96	2453.94	Kh 11.1 mD (n=5) · Density 2.69 (n=5) · CORE LABORATORIES	NO POROSITY \| SST GRY F-MGR SIL CMT; SST GRY MGR SIL CMT PYR NODS; SST GRY VF-MGR SIL CMT FRACS; SST GRY VF-MGR SIL CMT TR MICA; SST/SLTST GRY VF-FGR SIL CMT FRAC	.
21/30- 12	↳ Plug 01	2436.602	--	Kh 11.0 mD · Density 2.70 · CORE LABORATORIES	NO POROSITY \| SST/SLTST GRY VF-FGR SIL CMT FRAC	--
21/30- 12	↳ Plug 02	2440.595	--	Kh 0.3 mD · Density 2.68 · CORE LABORATORIES	NO POROSITY \| SST GRY VF-MGR SIL CMT FRACS	--
21/30- 12	↳ Plug 03	2442.301	--	Kh 0.3 mD · Density 2.69 · CORE LABORATORIES	NO POROSITY \| SST GRY VF-MGR SIL CMT TR MICA	--
21/30- 12	↳ Plug 04	2444.252	--	Kh 13.0 mD · Density 2.67 · CORE LABORATORIES	NO POROSITY \| SST GRY F-MGR SIL CMT	--
21/30- 12	↳ Plug 05	2448.977	--	Kh 31.0 mD · Density 2.72 · CORE LABORATORIES	NO POROSITY \| SST GRY MGR SIL CMT PYR NODS	--
21/30- 12	Core #6	2453.94	2470.1	Kh 2.0 mD (n=7) · Density 2.77 (n=7) · CORE LABORATORIES	DISINTEGRATED DURING EXTRACTION; NO POROSITY \| LAM SST GRY VF-FGR CALC CMT MICA CARB; SST GRY F-MGR SIL CMT; SST GRY VF-FGR SIL CMT ANHY VNS FRACS; SST GRY VFGR SIL CMT PYR; SST/DOL VFGR ANHY VNS	.
21/30- 12	↳ Plug 06	2454.128	--	Kh 0.1 mD · Density 2.77 · CORE LABORATORIES	NO POROSITY \| SST GRY VFGR SIL CMT PYR	--
21/30- 12	↳ Plug 07	2455.438	--	Kh 0.6 mD · Density 2.65 · CORE LABORATORIES	NO POROSITY \| LAM SST GRY VF-FGR CALC CMT MICA CARB	--
21/30- 12	↳ Plug 08	2456.2	--	Kh 5.6 mD · Density 2.68 · CORE LABORATORIES	NO POROSITY \| SST GRY F-MGR SIL CMT	--
21/30- 12	↳ Plug 09	2457.663	--	Kh 7.1 mD · Density 2.68 · CORE LABORATORIES	NO POROSITY \| SST GRY F-MGR SIL CMT	--
21/30- 12	↳ Plug 10	2459.888	--	CORE LABORATORIES	DISINTEGRATED DURING EXTRACTION	--
21/30- 12	↳ Plug 11	2464.369	--	Kh 0.0 mD · Density 2.92 · CORE LABORATORIES	NO POROSITY \| SST/DOL VFGR ANHY VNS	--
21/30- 12	↳ Plug 12	2466.381	--	Kh 0.1 mD · Density 2.89 · CORE LABORATORIES	NO POROSITY \| SST/DOL VFGR ANHY VNS	--
21/30- 12	↳ Plug 13	2469.154	--	Kh 0.5 mD · Density 2.79 · CORE LABORATORIES	NO POROSITY \| SST GRY VF-FGR SIL CMT ANHY VNS FRACS	--

Wireline Log Inventory (Ingested Curves)

Wellbore	Depth Start (m)	Depth Stop (m)	Typed Curves	Auto-scaled	Ingested
21/30- 12	116.7384033203125	2538.984130859375	10	0	2026-08-06 17:29:47.534494+00	View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser

21/30- 12

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
bulk_density	DEN	CGG Digital Well Logs	953.5668000000001	2537.7648	10396
caliper	MCAL	CGG Digital Well Logs	1673.5044	1891.1316000000002	1429
caliper	CALI	CGG Digital Well Logs	950.8236	2538.984	10422
caliper	CAL	CGG Digital Well Logs	939.2412	1912.3152	6386
comp_sonic	AC	CGG Digital Well Logs	221.43720000000002	2534.8692	15181
deep_resistivity	RD	CGG Digital Well Logs	946.0992	1905.9144000000001	6299
density_correction	CORR	CGG Digital Well Logs	950.0616	2537.6124	10418
gamma_ray	GR	CGG Digital Well Logs	116.73840000000001	2531.5164	15846
gamma_ray	GRL	CGG Digital Well Logs	1673.6568	1892.046	1434
micro_resistivity	RMLL	CGG Digital Well Logs	946.8612	1911.2484000000002	6329
neutron_por	CN	CGG Digital Well Logs	951.2808	2535.0216	10393
shallow_resistivity	RS	CGG Digital Well Logs	946.0992	1913.2296000000001	6347
sp	SP	CGG Digital Well Logs	221.43720000000002	2538.984	15208

Survey Inventory (Deviation)

Open full Survey detail

Wellbore	Stations	Max MD (m)	Max TVDSS (m)	Survey File
21/30- 12	84	2532.280	2507.039	D:\BigSpatial\nsta_raw\CGG_Deviation\21-30-12 7067bt-CGG-deviation.xlsx

21/30- 12

Well Header

Wellbores (1)

Formation Tops (22)

Lithology Intervals

Interpreted Data Inventory (LR / WellStrat)

Hydrocarbon Occurrence (4)

Rock Samples (35)

Wireline Log Inventory (Ingested Curves)

Source LAS Manifest (Best Curve per Type)

Survey Inventory (Deviation)

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