Well Data Manager / Well Summary / 99/18- 1

99/18- 1

Decommissioned

Well Header

Well No

99/18- 1

NSTA DEN No

2376

Well Name

Drill Seq No

Quadrant / Block

99 / 18

Surface Location

50.486251, -0.564010

Source Datum

ED50

Subsea Well

Platform

Slot No

Operator

TOTAL MINATOME OIL & GAS (UK) LIMITED

Original Operator

Sub Area Operator

TOTAL MINATOME OIL & GAS (UK) LIMITED

Licence No

P392

Licence Type

Production

Spud Date

1984-05-01

Source File

nsta_feature_service

Imported

2026-05-22 15:28

Wellbores (3)

99/18- 1 Original

Abandoned Phase 3 Survey

Current Intent

Exploration

Original Intent

Exploration

Flow Class

Unknown

Dev Type

Convention

Primary Target

Well Seq

WB1

Datum Type

Kelly Bushing

Datum Elev (m)

31.394

Ground Elev (m)

Water Depth (m)

64.01

TD MD (m)

110.642

TD TVDSS (m)

0.000

TD Datum Depth (m)

25.908

TD Datum Type

Kelly Bushing

Spud Date

1984-05-01

TD Reached

1984-05-01

Completion Date

1984-05-01

Release Date

1988-05-01

99/18- 1A Sidetrack A parent: 99/18- 1

Abandoned Phase 3 Survey

Current Intent

Exploration

Original Intent

Exploration

Flow Class

Unknown

Dev Type

Convention

Primary Target

Well Seq

WB1

Datum Type

Kelly Bushing

Datum Elev (m)

31.394

Ground Elev (m)

Water Depth (m)

64.01

TD MD (m)

149.352

TD TVDSS (m)

117.950

TD Datum Depth (m)

25.908

TD Datum Type

Kelly Bushing

Spud Date

1984-05-04

TD Reached

1984-05-07

Completion Date

1984-05-07

Release Date

1988-05-07

99/18- 1B Sidetrack B parent: 99/18- 1A

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)

31.394

Ground Elev (m)

Water Depth (m)

67.67

TD MD (m)

1431.650

TD TVDSS (m)

1246.420

TD Datum Depth (m)

31.394

TD Datum Type

Kelly Bushing

Spud Date

1984-05-07

TD Reached

1984-06-04

Completion Date

1984-06-07

Release Date

1988-06-07

Formation Tops (22)

Wellbore	Formation	Era	MD (m)	TVDSS (m)	Provider
99/18- 1B	Sea Bed		99.000	67.601	BGS
	Top Chalk Gp		99.000	67.601	BGS
	Top Selborne Gp		482.000	450.395	BGS
	Top Upper Greensand Fm		482.000	450.395	BGS
	Top Gault Clay Fm		497.000	465.386	BGS
	Top Lower Greensand Gp		535.000	503.365	BGS
	Top Wealden Gp		548.000	516.357	BGS
	Top Purbeck Gp		710.000	678.265	BGS
	Top Portland Gp		768.000	736.232	BGS
	Top Kimmeridge Clay Fm	Mesozoic	791.000	759.219	BGS
	Top Corallian Gp		925.000	893.143	BGS
	Top Oxford Clay Fm	Mesozoic	972.000	940.117	BGS
	Top Kellaways Fm		1057.000	1025.069	BGS
	Top Great Oolite Gp	Mesozoic	1084.000	1052.053	BGS
	Top Cornbrash Fm		1084.000	1052.053	BGS
	Top Chalfield Oolite Fm		1101.000	1069.044	BGS
	Top Fullers Earth Fm	Mesozoic	1151.000	1119.015	BGS
	Top Inferior Oolite Gp	Mesozoic	1218.000	1185.977	BGS
	Top Lias Gp		1266.000	1233.950	BGS
	Top Lower Lias	Mesozoic	1294.000	1261.934	BGS
	Top Sherwood Sandstone Gp	Mesozoic	1311.000	1278.925	BGS
	Top Metamorphic Basement		1358.000	1325.898	BGS

Lithology Intervals

99/18- 1B Curve: SANDCOUNT 84 intervals · MD 152.552 – 1429.969 m G:/NSTA_BigFiles/NSTA_Packages/Lloyds_Register/SW Approac...

Limestone (48)

Sandstone (30)

Coal (5)

Metamorphic (1)

Interpreted Data Inventory (LR / WellStrat)

Open Interpreted Data Log

Wellbore	Groups	Formations	Members	Strat Intervals	Tops	HC Occ	Core	Cuttings
99/18- 1	0	0	0	0	0	0	0	0
99/18- 1A	0	0	0	0	0	0	0	0
99/18- 1B	12	13	1	24	22	4	1	1	View

Hydrocarbon Occurrence (0)

No hydrocarbon shows or DSTs recorded for this well.

Rock Samples (2)

Wellbore	Sample	Top MD (m)	Base MD (m)	Key Lab Results	Comments	Notes
99/18- 1B	Cuttings	149.35	1353.31	--	--	.
99/18- 1B	Core #1	1427.07	1430.73	--	--	.

Wireline Log Inventory (Ingested Curves)

Wellbore	Depth Start (m)	Depth Stop (m)	Typed Curves	Auto-scaled	Ingested
99/18- 1B	97.53600311279297	1427.988037109375	11	0	2026-08-06 16:20:53.896252+00	View Log

Source LAS Manifest (Best Curve per Type)

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99/18- 1B

Curve Type	Best Mnemonic	Source	Depth Start (m)	Depth Stop (m)	Samples
bulk_density	RHOB	CGG Digital Well Logs	341.98560000000003	1427.988	7118
caliper	CALI	CGG Digital Well Logs	341.98560000000003	1427.988	7117
comp_sonic	DT	CGG Digital Well Logs	342.13800000000003	1416.558	6991
deep_resistivity	ILD	CGG Digital Well Logs	343.05240000000003	1425.8544000000002	7106
density_correction	DRHO	CGG Digital Well Logs	341.98560000000003	1427.988	7117
gamma_ray	GR	CGG Digital Well Logs	327.66	1418.082	7156
gamma_ray	GRD	CGG Digital Well Logs	97.536	1423.1112	8699
med_resistivity	ILM	CGG Digital Well Logs	342.74760000000003	1427.0736000000002	7115
neutron_por	NPHI	CGG Digital Well Logs	341.98560000000003	1421.4348	7035
pef	PEF	CGG Digital Well Logs	341.98560000000003	1427.988	7118
shallow_resistivity	SFLU	CGG Digital Well Logs	342.59520000000003	1426.1592	7111
sp	SP	CGG Digital Well Logs	342.44280000000003	1427.6832000000002	7122

Survey Inventory (Deviation)

Open full Survey detail

Wellbore	Stations	Max MD (m)	Max TVDSS (m)	Survey File
99/18- 1	0	--	--	--
99/18- 1A	0	--	--	--
99/18- 1B	19	1431.950	1399.806	D:\BigSpatial\nsta_raw\CGG_Deviation\99-18-1B 8250u-CGG_Deviation.xls

99/18- 1

Well Header

Wellbores (3)

Formation Tops (22)

Lithology Intervals

Interpreted Data Inventory (LR / WellStrat)

Hydrocarbon Occurrence (0)

Rock Samples (2)

Wireline Log Inventory (Ingested Curves)

Source LAS Manifest (Best Curve per Type)

Survey Inventory (Deviation)

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