Well Data Manager / Well Summary / 21/28b- 7

21/28b- 7

Decommissioned

Well Header

Well No
21/28b- 7
NSTA DEN No
4470
Well Name
--
Drill Seq No
7
Quadrant / Block
21 / 28 b
Surface Location
57.028403, 0.438835
Source Datum
ED50
Subsea Well
Unknown
Platform
--
Slot No
--
Operator
HESS LIMITED
Original Operator
--
Sub Area Operator
HESS LIMITED
Licence No
P652
Licence Type
Production
Spud Date
1991-09-27
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (1)

21/28b- 7 Original
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Exploration
Original Intent
Exploration
Flow Class
Dry Hole
Dev Type
--
Convention
--
Primary Target
A
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
26.822
Ground Elev (m)
--
Water Depth (m)
89.31
TD MD (m)
1981.810
TD TVDSS (m)
0.000
TD Datum Depth (m)
26.822
TD Datum Type
Kelly Bushing
Spud Date
1991-09-27
TD Reached
1991-10-10
Completion Date
1991-10-21
Release Date
1995-10-21

Formation Tops (16)

Wellbore Formation Era MD (m) TVDSS (m) Provider
21/28b- 7 Horda Cenozoic 991.000 963.997 Lloyds Register
Stronsay Cenozoic 991.000 963.997 Lloyds Register
Upper Tay Sandstone 1081.000 1053.960 Lloyds Register
Balder Cenozoic 1252.000 1224.907 Lloyds Register
Moray Mesozoic 1252.000 1224.907 Lloyds Register
Balder Tuff Cenozoic 1274.000 1246.901 Lloyds Register
Sele Mesozoic 1324.000 1296.887 Lloyds Register
Montrose Mesozoic 1444.000 1416.847 Lloyds Register
Lista Mesozoic 1444.000 1416.847 Lloyds Register
Maureen Mesozoic 1461.000 1433.841 Lloyds Register
Chalk Mesozoic 1473.000 1445.837 Lloyds Register
Upper Cretaceous Chalk Mesozoic 1473.000 1445.837 Lloyds Register
Cromer Knoll Mesozoic 1745.000 1717.752 Lloyds Register
Lower Cretaceous Undifferentiated Mesozoic 1745.000 1717.752 Lloyds Register
Heron Palaeozoic 1774.000 1746.746 Lloyds Register
Smith Bank Mesozoic 1774.000 1746.746 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
21/28b- 7 6 8 2 29 16 2 1 0 0 View

Hydrocarbon Occurrence (0)

No hydrocarbon shows or DSTs recorded for this well.

Rock Samples (21)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
21/28b- 7 Core #1 1090.27 1096.06 φ 34.9% (n=17) · Kh 11575.0 mD (n=14) · So 0.9% (n=17) · Sw 51.2% (n=17) · Density 2.65 (n=17) · ROBERTSON GROUP PLC DAMAGED; MUDSTONE NO ANALYSIS; RUBBLE NO ANALYSIS .
21/28b- 7 ↳ Plug N/A 1090.422 -- ROBERTSON GROUP PLC RUBBLE NO ANALYSIS --
21/28b- 7 ↳ Plug 02 1090.818 -- φ 37.2% · Kh 12200.0 mD · So 1.0% · Sw 56.0% · Density 2.64 · ROBERTSON GROUP PLC -- --
21/28b- 7 ↳ Plug 03 1091.032 -- φ 36.4% · Kh 13100.0 mD · So 1.0% · Sw 57.8% · Density 2.66 · ROBERTSON GROUP PLC -- --
21/28b- 7 ↳ Plug 04 1091.275 -- φ 30.0% · Kh 13500.0 mD · So 1.1% · Sw 55.0% · Density 2.65 · ROBERTSON GROUP PLC -- --
21/28b- 7 ↳ Plug 05 1091.641 -- φ 34.9% · Kh 13300.0 mD · So 1.1% · Sw 46.6% · Density 2.64 · ROBERTSON GROUP PLC -- --
21/28b- 7 ↳ Plug 06 1091.946 -- φ 35.3% · Kh 13000.0 mD · So 1.0% · Sw 38.5% · Density 2.64 · ROBERTSON GROUP PLC -- --
21/28b- 7 ↳ Plug 07 1092.251 -- φ 32.8% · Kh 11300.0 mD · So 1.2% · Sw 55.8% · Density 2.65 · ROBERTSON GROUP PLC -- --
21/28b- 7 ↳ Plug 08 1092.556 -- φ 34.8% · Kh 11000.0 mD · So 1.1% · Sw 64.9% · Density 2.65 · ROBERTSON GROUP PLC -- --
21/28b- 7 ↳ Plug 09 1092.83 -- φ 35.7% · So 1.1% · Sw 53.8% · Density 2.66 · ROBERTSON GROUP PLC DAMAGED --
21/28b- 7 ↳ Plug 10 1093.104 -- φ 34.8% · Kh 8100.0 mD · So 1.0% · Sw 22.5% · Density 2.65 · ROBERTSON GROUP PLC -- --
21/28b- 7 ↳ Plug 11 1093.47 -- φ 34.5% · Kh 16000.0 mD · So 0.4% · Sw 38.2% · Density 2.66 · ROBERTSON GROUP PLC -- --
21/28b- 7 ↳ Plug 12 1093.775 -- φ 35.7% · So 0.4% · Sw 30.0% · Density 2.65 · ROBERTSON GROUP PLC DAMAGED --
21/28b- 7 ↳ Plug 13 1094.08 -- φ 31.4% · So 1.2% · Sw 37.3% · Density 2.64 · ROBERTSON GROUP PLC DAMAGED --
21/28b- 7 ↳ Plug 14 1094.384 -- φ 33.2% · Kh 16300.0 mD · So 1.6% · Sw 41.5% · Density 2.65 · ROBERTSON GROUP PLC -- --
21/28b- 7 ↳ Plug 15 1094.628 -- φ 37.1% · Kh 7620.0 mD · So 0.4% · Sw 84.9% · Density 2.66 · ROBERTSON GROUP PLC -- --
21/28b- 7 ↳ Plug 16 1094.933 -- φ 37.8% · Kh 7120.0 mD · So 0.2% · Sw 73.4% · Density 2.68 · ROBERTSON GROUP PLC -- --
21/28b- 7 ↳ Plug 17 1095.253 -- φ 38.5% · Kh 9610.0 mD · So 0.9% · Sw 41.1% · Density 2.66 · ROBERTSON GROUP PLC -- --
21/28b- 7 ↳ Plug 18 1095.512 -- φ 33.2% · Kh 9900.0 mD · So 1.2% · Sw 72.5% · Density 2.64 · ROBERTSON GROUP PLC -- --
21/28b- 7 ↳ Plug N/A 1095.604 -- ROBERTSON GROUP PLC MUDSTONE NO ANALYSIS --
21/28b- 7 ↳ Plug N/A 1095.908 -- ROBERTSON GROUP PLC MUDSTONE NO ANALYSIS --

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
21/28b- 7 83.97239685058594 2002.9931640625 10 0 2026-08-06 17:29:26.551821+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
21/28b- 7
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density ZDEN CGG Digital Well Logs 464.51520000000005 2002.9932000000001 10096
caliper CAL CGG Digital Well Logs 464.66760000000005 1981.962 9957
caliper CALI CGG Digital Well Logs 464.51520000000005 2002.9932000000001 10096
comp_sonic AC CGG Digital Well Logs 465.27720000000005 1991.2584000000002 10014
deep_resistivity RILD CGG Digital Well Logs 464.66760000000005 1997.5068 10059
density_correction ZCOR CGG Digital Well Logs 464.66760000000005 2002.8408000000002 10094
gamma_ray GR CGG Digital Well Logs 83.97240000000001 1985.9244 12481
gamma_ray GRD CGG Digital Well Logs 444.70320000000004 1997.3544000000002 10189
med_resistivity RILM CGG Digital Well Logs 464.66760000000005 1999.0308 10069
neutron_por CNC CGG Digital Well Logs 464.51520000000005 1997.5068 10060
pef PE CGG Digital Well Logs 464.51520000000005 2002.9932000000001 10096
shallow_resistivity RFOC CGG Digital Well Logs 464.51520000000005 2001.0120000000002 10083

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
21/28b- 7 25 2008.632 1981.343 D:\BigSpatial\nsta_raw\CGG_Deviation\21-28b-7 15222av_CGG-Deviation.xlsx

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