Well Data Manager / Well Summary / 205/05a- 1

205/05a- 1

Present

Well Header

Well No
205/05a- 1
NSTA DEN No
17624
Well Name
--
Drill Seq No
1
Quadrant / Block
205 / 5 a
Surface Location
60.871823, -3.137265
Source Datum
ED50
Subsea Well
Unknown
Platform
--
Slot No
--
Operator
PRAX UPSTREAM LIMITED
Original Operator
--
Sub Area Operator
PRAX UPSTREAM LIMITED
Licence No
P1159
Licence Type
Production
Spud Date
2007-06-13
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

205/05a- 1 Original
Abandoned Phase 1 View Log Interpreted Data Survey
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Gas Well
Dev Type
--
Convention
--
Primary Target
A
Well Seq
WB1
Datum Type
Rotary Table
Datum Elev (m)
26.400
Ground Elev (m)
--
Water Depth (m)
610.60
TD MD (m)
3963.000
TD TVDSS (m)
3936.370
TD Datum Depth (m)
26.400
TD Datum Type
Rotary Table
Spud Date
2007-06-13
TD Reached
2007-08-03
Completion Date
2007-09-28
Release Date
2010-09-28

Formation Tops (9)

Wellbore Formation Era MD (m) TVDSS (m) Provider
205/05a- 1 Unknown 637.000 610.600 BGS LithoStrat Upper
Stronsay Group Cenozoic 1990.000 1963.569 BGS LithoStrat Upper
Balder Cenozoic 2353.000 2326.564 BGS LithoStrat Upper
Flett Formation Cenozoic 2450.000 2423.562 BGS LithoStrat Upper
Lamba Formation Cenozoic 3040.000 3013.554 BGS LithoStrat Upper
Kettla Tuff Mesozoic 3498.000 3471.541 BGS LithoStrat Upper
Vaila Formation Cenozoic 3586.000 3559.533 BGS LithoStrat Upper
Laggan Sandstone Pre-Cambrian 3778.000 3751.484 BGS LithoStrat Upper
Vaila Formation Cenozoic 3811.000 3784.469 BGS LithoStrat Upper

Lithology Intervals

205/05a- 1 Curve: SANDCOUNT 319 intervals  ·  MD 2015.947 – 3926.434 m G:/NSTA_BigFiles/NSTA_Packages/Lloyds_Register/WoS_ArcGIS...
Sandstone (199)
Limestone (86)
Coal (25)
Tuff (9)

Interpreted Data Inventory (LR / WellStrat)

Open Interpreted Data Log
Wellbore Groups Formations Members Strat Intervals Tops HC Occ Core Cuttings DSTs
205/05a- 1 3 5 5 9 9 1 0 0 1 View

Hydrocarbon Occurrence (2)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
205/05a- 1 Gas GCW Laggan Sandstone Formation 3778.0000000000005 -- 33 m thick
205/05a- 1 DST DST 1 -- 3799.94 3810.92 Label / Vaila

Rock Samples (0)

No cuttings, core, or plug samples recorded for this well.

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
205/05a- 1 696.0744018554688 3948.89990234375 11 0 2026-08-06 10:00:18.322365+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
205/05a- 1
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density DENS UKCS JDWL 30th Round 1998.0276 3934.8792 12710
caliper CALI UKCS JDWL 30th Round 1994.9796 3933.8124 12723
comp_sonic DTC UKCS JDWL 30th Round 1998.0276 3926.3448 12654
deep_resistivity RT UKCS JDWL 30th Round 1998.0276 3935.946 12717
deep_resistivity A40H UKCS JDWL 30th Round 3728.5296 3948.9 1447
deep_resistivity P40H UKCS JDWL 30th Round 3728.5296 3948.9 1447
density_correction DENC UKCS JDWL 30th Round 1998.0276 3934.8792 12710
gamma_ray GR UKCS JDWL 30th Round 696.0744 3931.8312 21227
med_resistivity P28H UKCS JDWL 30th Round 3728.5296 3948.9 1447
med_resistivity A28H UKCS JDWL 30th Round 3728.5296 3948.9 1447
med_resistivity A34H UKCS JDWL 30th Round 3728.5296 3948.9 1447
med_resistivity P34H UKCS JDWL 30th Round 3728.5296 3948.9 1447
neutron_por NEUT UKCS JDWL 30th Round 1998.0276 3933.66 12702
pef PEF UKCS JDWL 30th Round 1998.0276 3933.8124 12703
rxo_resistivity RXOZ UKCS JDWL 30th Round 1998.0276 3933.8124 12703
shallow_resistivity P22H UKCS JDWL 30th Round 3728.5296 3948.9 1447
shallow_resistivity P16H UKCS JDWL 30th Round 3728.5296 3948.9 1447
shallow_resistivity A22H UKCS JDWL 30th Round 3728.5296 3948.9 1447
shallow_resistivity A16H UKCS JDWL 30th Round 3728.5296 3948.9 1447

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
205/05a- 1 69 3963.000 3936.381 G:\NSTA_BigFiles\NSTA_Packages\UKCS_JDWL_30thRound\WOS\205_05a-1_DEVIATION_SURVEY_QC.xlsm

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