31/26a- 9

Decommissioned

Well Header

Well No
31/26a- 9
NSTA DEN No
4322
Well Name
--
Drill Seq No
9
Quadrant / Block
31 / 26 a
Surface Location
56.002324, 3.183480
Source Datum
ED50
Subsea Well
Unknown
Platform
--
Slot No
--
Operator
HESS LIMITED
Original Operator
--
Sub Area Operator
HESS LIMITED
Licence No
P288
Licence Type
Production
Spud Date
1991-02-01
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (3)

31/26a- 9 Original
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Dry Hole
Dev Type
--
Convention
--
Primary Target
DA
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
24.384
Ground Elev (m)
--
Water Depth (m)
68.58
TD MD (m)
474.878
TD TVDSS (m)
0.000
TD Datum Depth (m)
24.384
TD Datum Type
Kelly Bushing
Spud Date
1991-02-01
TD Reached
1991-02-11
Completion Date
1991-02-12
Release Date
1995-02-12
31/26a- 9A Sidetrack A parent: 31/26a- 9
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Oil Show
Dev Type
--
Convention
--
Primary Target
DA
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
24.384
Ground Elev (m)
--
Water Depth (m)
70.41
TD MD (m)
2941.625
TD TVDSS (m)
0.000
TD Datum Depth (m)
24.384
TD Datum Type
Kelly Bushing
Spud Date
1991-02-14
TD Reached
1991-03-18
Completion Date
1991-04-03
Release Date
1995-04-03
31/26a- 9Z Sidetrack Z parent: 31/26a- 9A
Abandoned Phase 3 Survey
Current Intent
Development
Original Intent
Development
Flow Class
Oil Well
Dev Type
Producer
Convention
--
Primary Target
AC
Well Seq
WB2
Datum Type
Kelly Bushing
Datum Elev (m)
24.384
Ground Elev (m)
--
Water Depth (m)
70.41
TD MD (m)
3236.976
TD TVDSS (m)
2738.994
TD Datum Depth (m)
24.384
TD Datum Type
Kelly Bushing
Spud Date
1995-01-05
TD Reached
1995-01-22
Completion Date
2000-11-15
Release Date
2004-11-15

Formation Tops (46)

Wellbore Formation Era MD (m) TVDSS (m) Provider
31/26a- 9 Horda Cenozoic 1823.000 1798.616 Lloyds Register
Stronsay Cenozoic 1823.000 1798.616 Lloyds Register
Moray Mesozoic 2324.000 2299.616 Lloyds Register
Balder Tuff Cenozoic 2324.000 2299.616 Lloyds Register
Balder Cenozoic 2324.000 2299.616 Lloyds Register
Sele Mesozoic 2333.000 2308.616 Lloyds Register
Montrose Mesozoic 2360.000 2335.616 Lloyds Register
Lista Mesozoic 2360.000 2335.616 Lloyds Register
Maureen Mesozoic 2400.000 2375.616 Lloyds Register
Chalk Mesozoic 2411.000 2386.616 Lloyds Register
Ekofisk Mesozoic 2411.000 2386.616 Lloyds Register
Upper Cretaceous Chalk Mesozoic 2472.000 2447.616 Lloyds Register
Cromer Knoll Mesozoic 2563.000 2538.616 Lloyds Register
Valhall Mesozoic 2563.000 2538.616 Lloyds Register
Humber Mesozoic 2568.000 2543.616 Lloyds Register
Kimmeridge Clay 2568.000 2543.616 Lloyds Register
Fulmar Mesozoic 2577.000 2552.616 Lloyds Register
Heron Palaeozoic 2718.000 2693.616 Lloyds Register
Smith Bank Mesozoic 2718.000 2693.616 Lloyds Register
Turbot Anhydrite Palaeozoic 2823.000 2798.616 Lloyds Register
Zechstein Palaeozoic 2823.000 2798.616 Lloyds Register
Halibut Carbonate Palaeozoic 2889.000 2864.616 Lloyds Register
Kupferschiefer Palaeozoic 2905.000 2880.616 Lloyds Register
Auk 2907.000 2882.616 Lloyds Register
Rotliegend 2907.000 2882.616 Lloyds Register
31/26a- 9A Nordland Cenozoic 96.000 71.616 BGS LithoStrat Upper
Hordaland Cenozoic 1403.000 1378.616 BGS LithoStrat Upper
Hordaland Cenozoic 1823.000 1798.616 BGS LithoStrat Upper
Hordaland Cenozoic 2262.000 2237.616 BGS LithoStrat Upper
Balder Cenozoic 2324.000 2299.616 BGS LithoStrat Upper
Sele Mesozoic 2333.000 2308.616 BGS LithoStrat Upper
Sele Mesozoic 2353.000 2328.616 BGS LithoStrat Upper
Lista Mesozoic 2360.000 2335.616 BGS LithoStrat Upper
Maureen Mesozoic 2400.000 2375.616 BGS LithoStrat Upper
Ekofisk Mesozoic 2411.000 2386.616 BGS LithoStrat Upper
Tor Mesozoic 2472.000 2447.616 BGS LithoStrat Upper
Tor Mesozoic 2509.000 2484.616 BGS LithoStrat Upper
Hod Mesozoic 2530.000 2505.616 BGS LithoStrat Upper
Valhall Mesozoic 2563.000 2538.616 BGS LithoStrat Upper
Kimmeridge Clay 2568.000 2543.616 BGS LithoStrat Upper
Kimmeridge Clay 2572.000 2547.616 BGS LithoStrat Upper
Fulmar Sandstone 2577.000 2552.616 BGS LithoStrat Upper
Smith Bank Mesozoic 2718.000 2693.616 BGS LithoStrat Upper
Zechstein Palaeozoic 2823.000 2798.616 BGS LithoStrat Upper
Kupferschiefer Palaeozoic 2905.000 2880.616 BGS LithoStrat Upper
Rotliegendes 2907.000 2882.616 BGS LithoStrat Upper

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
31/26a- 9 9 15 1 0 25 2 3 0 0 View
31/26a- 9A 0 0 0 21 21 2 2 1 2 View
31/26a- 9Z 0 0 0 0 0 0 0 0 0

Hydrocarbon Occurrence (9)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
31/26a- 9A Oil shows OS Ekofisk Formation 2410.6632 -- 61 m thick
31/26a- 9A Oil shows OS Tor Formation 2471.6232 -- 37 m thick
31/26a- 9A DST DST 2 -- 2471.9 2487.2 Label / Upper Cretaceous
31/26a- 9A Oil shows OS Hod Formation [Norwegian Classification - reserved for possible future use] 2529.84 -- 34 m thick
31/26a- 9A Oil shows OS VALH 2563.368 -- 5 m thick
31/26a- 9A Oil shows OS Kimmeridge Clay Formation 2568.2448 -- 4 m thick
31/26a- 9A Oil shows OS Kimmeridge Clay Formation 2571.9024 -- 5 m thick
31/26a- 9A DST DST 1 -- 2575.0 2611.5 Label / Upper Jurassic
31/26a- 9A Oil O Fulmar Formation 2577.0840000000003 -- 141 m thick

Rock Samples (6)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
31/26a- 9 Core #1 2563.37 2590.16 -- -- .
31/26a- 9 Core #2 2591.1 2618.54 -- -- .
31/26a- 9 Core #3 2618.23 2646.27 -- -- .
31/26a- 9A Cuttings 1463.04 3233.32 -- -- in as 31/26a-A 2
31/26a- 9A Core #1 2943.76 2958.45 -- -- in as 31/26a-A 2 (synonomous well)
31/26a- 9A Core #2 2951.68 2967.5 -- -- rubble bags

Wireline Log Inventory (Ingested Curves)

No wireline log curves ingested for this well.

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser

No scanned LAS source files matched to this well.

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
31/26a- 9 0 -- -- --
31/26a- 9A 0 -- -- --
31/26a- 9Z 0 -- -- --

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