Well Data Manager / Well Summary / 16/21a- 18

16/21a- 18

Decommissioned

Well Header

Well No
16/21a- 18
NSTA DEN No
3834
Well Name
--
Drill Seq No
18
Quadrant / Block
16 / 21 a
Surface Location
58.187821, 1.007695
Source Datum
ED50
Subsea Well
No
Platform
--
Slot No
--
Operator
PREMIER OIL E&P UK LIMITED
Original Operator
--
Sub Area Operator
PREMIER OIL E&P UK LIMITED
Licence No
P201
Licence Type
Production
Spud Date
1989-08-13
Source File
nsta_feature_service
Imported
2026-05-22 15:28

Wellbores (2)

16/21a- 18 Original
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Appraisal
Original Intent
Appraisal
Flow Class
Oil Well
Dev Type
--
Convention
--
Primary Target
Y
Well Seq
WB1
Datum Type
Kelly Bushing
Datum Elev (m)
23.470
Ground Elev (m)
--
Water Depth (m)
148.74
TD MD (m)
2271.060
TD TVDSS (m)
2246.681
TD Datum Depth (m)
23.470
TD Datum Type
Kelly Bushing
Spud Date
1989-08-13
TD Reached
1989-09-04
Completion Date
1989-09-29
Release Date
1993-09-29
16/21a- 18Z Sidetrack Z parent: 16/21a- 18
Abandoned Phase 3 View Log Interpreted Data Survey
Current Intent
Appraisal
Original Intent
Appraisal
Flow Class
Oil Show
Dev Type
--
Convention
--
Primary Target
Y
Well Seq
WB2
Datum Type
Kelly Bushing
Datum Elev (m)
25.908
Ground Elev (m)
--
Water Depth (m)
148.74
TD MD (m)
2473.450
TD TVDSS (m)
2214.982
TD Datum Depth (m)
25.908
TD Datum Type
Kelly Bushing
Spud Date
1991-03-19
TD Reached
1991-04-15
Completion Date
1991-04-23
Release Date
1995-04-23

Formation Tops (15)

Wellbore Formation Era MD (m) TVDSS (m) Provider
16/21a- 18 Nordland Cenozoic 172.000 148.530 BGS LithoStrat Upper
Nordland Cenozoic 470.000 446.530 BGS LithoStrat Upper
Nordland Cenozoic 1442.000 1418.530 BGS LithoStrat Upper
Balder Cenozoic 2005.000 1981.530 BGS LithoStrat Upper
Sele Mesozoic 2046.000 2022.530 BGS LithoStrat Upper
Forties Mesozoic 2100.000 2076.530 BGS LithoStrat Upper
Lista Mesozoic 2117.000 2093.530 BGS LithoStrat Upper
Andrew Cenozoic 2149.000 2125.530 BGS LithoStrat Upper
16/21a- 18Z Unknown 175.000 149.092 BGS LithoStrat Upper
Nordland Cenozoic 497.000 471.092 BGS LithoStrat Upper
Balder Cenozoic 2221.000 2195.092 BGS LithoStrat Upper
Sele Mesozoic 2256.000 2230.092 BGS LithoStrat Upper
Forties Mesozoic 2313.000 2287.092 BGS LithoStrat Upper
Lista Mesozoic 2331.000 2305.092 BGS LithoStrat Upper
Andrew Cenozoic 2365.000 2339.092 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
16/21a- 18 0 0 0 8 8 1 3 0 2 View
16/21a- 18Z 0 0 0 7 7 2 3 1 0 View

Hydrocarbon Occurrence (4)

Wellbore Category Code Formation / Litho Top MD (m) Base MD (m) Notes
16/21a- 18 Oil OW Forties Sandstone Member 2099.7672000000002 -- 17 m thick
16/21a- 18 DST DST 1B -- 2105.3 2116.5 Label / Balmoral
16/21a- 18 Oil shows OS Lista Formation 2116.5312 -- 33 m thick
16/21a- 18 DST DST 1A -- 2121.4 2127.5 Not used for labelling, multiple DSTs in same play / Balmoral

Rock Samples (55)

Wellbore Sample Top MD (m) Base MD (m) Key Lab Results Comments Notes
16/21a- 18 Core #1 2097.02 2099.16 CORE LABORATORIES (U.K.) LIMITED SHALE - NO ANALYSIS .
16/21a- 18 ↳ Plug 01 2097.024 -- CORE LABORATORIES (U.K.) LIMITED SHALE - NO ANALYSIS --
16/21a- 18 ↳ Plug 02 2097.329 -- CORE LABORATORIES (U.K.) LIMITED SHALE - NO ANALYSIS --
16/21a- 18 ↳ Plug 03 2097.634 -- CORE LABORATORIES (U.K.) LIMITED SHALE - NO ANALYSIS --
16/21a- 18 ↳ Plug 04 2097.938 -- CORE LABORATORIES (U.K.) LIMITED SHALE - NO ANALYSIS --
16/21a- 18 ↳ Plug 05 2098.243 -- CORE LABORATORIES (U.K.) LIMITED SHALE - NO ANALYSIS --
16/21a- 18 ↳ Plug 06 2098.548 -- CORE LABORATORIES (U.K.) LIMITED SHALE - NO ANALYSIS --
16/21a- 18 ↳ Plug 07 2098.853 -- CORE LABORATORIES (U.K.) LIMITED SHALE - NO ANALYSIS --
16/21a- 18 Core #2 2104.64 2112.57 φ 26.4% (n=26) · Kh 674.7 mD (n=20) · Kv 578.2 mD (n=20) · So 27.2% (n=26) · Sw 63.5% (n=26) · Density 2.66 (n=26) · CORE LABORATORIES (U.K.) LIMITED DAMAGED; FAILED DURING TESTING; FRACTURED; SPLIT | SST GRY CRS-VFGR P SIL CMT; SST GRY CRS-VFGR SIL CMT P SIL CMT; SST GRY F-VFGR SIL CMT; SST GRY F-VFGR SIL CMT CRSGR PTCH; SST GRY F-VFGR SIL CMT SLTY CARB LAM SPLIT; SST GRY F-VFGR SIL CMT SLTY CARB MIC; SST GRY F-VFGR SIL CMT SLTY CARB MIC PYR TR CALC; SST GRY F-VFGR SIL CMT SLTY LAM FRAC; SST GRY F-VFGR SIL CMT SLTY PTCH; SST GRY FGR P SIL CMT SLTY ABD QRTZ GRAN; SST GRY M-VFGR SIL CMT; SST GRY M-VFGR SIL CMT CARB MIC; SST GRY M-VFGR SIL CMT CRS QRTZ GRAN; SST GRY M-VFGR SIL CMT MIC; SST GRY M-VFGR SIL CMT SLTY PTCH; SST GRY P SRT CRS-VFGR V P SIL CMT; SST GRY V P SRT VCRS-VFGR V P SIL CMT; SST GRY VFGR SIL CMT SLTY LAM MIC; SST GYR F-VFGR SIL CMT SLTY CARB SLTY LAM MIC PYR FRAC .
16/21a- 18 ↳ Plug 08 2104.857 -- φ 28.8% · Kh 421.0 mD · Kv 389.0 mD · So 27.8% · Sw 62.9% · Density 2.66 · CORE LABORATORIES (U.K.) LIMITED SST GRY F-VFGR SIL CMT SLTY CARB MIC --
16/21a- 18 ↳ Plug 09 2104.979 -- φ 25.8% · Kh 419.0 mD · Kv 465.0 mD · So 34.7% · Sw 56.1% · Density 2.68 · CORE LABORATORIES (U.K.) LIMITED SST GRY F-VFGR SIL CMT SLTY CARB MIC PYR TR CALC --
16/21a- 18 ↳ Plug 10 2105.376 -- φ 22.5% · Kh 14.3 mD · Kv 0.9 mD · So 18.8% · Sw 69.1% · Density 2.69 · CORE LABORATORIES (U.K.) LIMITED FRACTURED | SST GYR F-VFGR SIL CMT SLTY CARB SLTY LAM MIC PYR FRAC --
16/21a- 18 ↳ Plug 11 2105.589 -- φ 30.7% · Kh 628.0 mD · Kv 879.0 mD · So 26.6% · Sw 64.1% · Density 2.66 · CORE LABORATORIES (U.K.) LIMITED SST GRY F-VFGR SIL CMT SLTY PTCH --
16/21a- 18 ↳ Plug 12 2105.863 -- φ 29.3% · Kh 635.0 mD · Kv 3244.0 mD · So 24.5% · Sw 68.0% · Density 2.65 · CORE LABORATORIES (U.K.) LIMITED SST GRY F-VFGR SIL CMT --
16/21a- 18 ↳ Plug 13 2106.168 -- φ 28.4% · Kh 892.0 mD · Kv 588.0 mD · So 32.6% · Sw 60.8% · Density 2.66 · CORE LABORATORIES (U.K.) LIMITED SST GRY F-VFGR SIL CMT CRSGR PTCH --
16/21a- 18 ↳ Plug 14 2106.473 -- φ 26.4% · Kh 115.0 mD · Kv 563.0 mD · So 24.5% · Sw 63.0% · Density 2.65 · CORE LABORATORIES (U.K.) LIMITED FRACTURED | SST GRY F-VFGR SIL CMT SLTY LAM FRAC --
16/21a- 18 ↳ Plug 15 2106.778 -- φ 27.2% · So 18.6% · Sw 63.6% · Density 2.62 · CORE LABORATORIES (U.K.) LIMITED SPLIT | SST GRY F-VFGR SIL CMT SLTY CARB LAM SPLIT --
16/21a- 18 ↳ Plug 16 2107.082 -- φ 28.4% · Kv 289.0 mD · So 29.0% · Sw 69.4% · Density 2.66 · CORE LABORATORIES (U.K.) LIMITED DAMAGED | SST GRY FGR P SIL CMT SLTY ABD QRTZ GRAN --
16/21a- 18 ↳ Plug 17 2107.509 -- φ 27.5% · Kh 813.0 mD · Kv 366.0 mD · So 31.3% · Sw 61.2% · Density 2.66 · CORE LABORATORIES (U.K.) LIMITED SST GRY M-VFGR SIL CMT --
16/21a- 18 ↳ Plug 18 2107.722 -- φ 24.4% · So 26.5% · Sw 63.3% · Density 2.65 · CORE LABORATORIES (U.K.) LIMITED FAILED DURING TESTING --
16/21a- 18 ↳ Plug 19 2107.997 -- φ 26.9% · So 32.6% · Sw 54.4% · Density 2.66 · CORE LABORATORIES (U.K.) LIMITED FAILED DURING TESTING --
16/21a- 18 ↳ Plug 20 2108.424 -- φ 22.6% · Kh 1156.0 mD · So 27.5% · Sw 67.2% · Density 2.65 · CORE LABORATORIES (U.K.) LIMITED SST GRY P SRT CRS-VFGR V P SIL CMT --
16/21a- 18 ↳ Plug 21 2108.606 -- φ 22.2% · Kh 1322.0 mD · So 29.0% · Sw 66.0% · Density 2.66 · CORE LABORATORIES (U.K.) LIMITED SST GRY P SRT CRS-VFGR V P SIL CMT --
16/21a- 18 ↳ Plug 22 2108.911 -- φ 26.8% · Kh 370.0 mD · Kv 18.6 mD · So 29.4% · Sw 59.2% · Density 2.65 · CORE LABORATORIES (U.K.) LIMITED SST GRY M-VFGR SIL CMT CARB MIC --
16/21a- 18 ↳ Plug 23 2109.216 -- φ 27.0% · Kh 734.0 mD · Kv 749.0 mD · So 29.2% · Sw 62.1% · Density 2.65 · CORE LABORATORIES (U.K.) LIMITED SST GRY M-VFGR SIL CMT --
16/21a- 18 ↳ Plug 24 2109.521 -- φ 27.5% · Kh 526.0 mD · Kv 264.0 mD · So 27.9% · Sw 66.0% · Density 2.66 · CORE LABORATORIES (U.K.) LIMITED SST GRY M-VFGR SIL CMT SLTY PTCH --
16/21a- 18 ↳ Plug 25 2109.826 -- φ 22.9% · Kh 951.0 mD · Kv 391.0 mD · So 31.8% · Sw 62.7% · Density 2.66 · CORE LABORATORIES (U.K.) LIMITED SST GRY V P SRT VCRS-VFGR V P SIL CMT --
16/21a- 18 ↳ Plug 26 2110.344 -- φ 26.4% · Kh 228.0 mD · Kv 432.0 mD · So 32.0% · Sw 59.8% · Density 2.67 · CORE LABORATORIES (U.K.) LIMITED SST GRY M-VFGR SIL CMT --
16/21a- 18 ↳ Plug 27 2110.435 -- φ 26.8% · Kh 595.0 mD · Kv 485.0 mD · So 28.5% · Sw 62.6% · Density 2.66 · CORE LABORATORIES (U.K.) LIMITED SST GRY M-VFGR SIL CMT --
16/21a- 18 ↳ Plug 28 2110.74 -- φ 27.0% · Kh 651.0 mD · Kv 381.0 mD · So 30.6% · Sw 60.2% · Density 2.66 · CORE LABORATORIES (U.K.) LIMITED SST GRY M-VFGR SIL CMT --
16/21a- 18 ↳ Plug 29 2111.045 -- φ 22.1% · Kv 446.0 mD · So 12.4% · Sw 76.7% · Density 2.68 · CORE LABORATORIES (U.K.) LIMITED DAMAGED | SST GRY VFGR SIL CMT SLTY LAM MIC --
16/21a- 18 ↳ Plug 30 2111.35 -- φ 29.2% · So 31.3% · Sw 65.2% · Density 2.65 · CORE LABORATORIES (U.K.) LIMITED DAMAGED | SST GRY M-VFGR SIL CMT MIC --
16/21a- 18 ↳ Plug 31 2111.654 -- φ 26.3% · Kh 1085.0 mD · Kv 388.0 mD · So 26.8% · Sw 63.4% · Density 2.65 · CORE LABORATORIES (U.K.) LIMITED SST GRY CRS-VFGR SIL CMT P SIL CMT --
16/21a- 18 ↳ Plug 32 2111.959 -- φ 27.9% · Kh 970.0 mD · Kv 454.0 mD · So 20.6% · Sw 63.2% · Density 2.65 · CORE LABORATORIES (U.K.) LIMITED SST GRY M-VFGR SIL CMT CRS QRTZ GRAN --
16/21a- 18 ↳ Plug 33 2112.294 -- φ 24.5% · Kh 968.0 mD · Kv 772.0 mD · So 22.7% · Sw 60.0% · Density 2.66 · CORE LABORATORIES (U.K.) LIMITED SST GRY CRS-VFGR P SIL CMT --
16/21a- 18 Core #3 2113.79 2118.36 φ 15.9% (n=11) · Kh 146.0 mD (n=9) · Kv 185.3 mD (n=6) · So 9.2% (n=11) · Sw 81.4% (n=11) · Density 2.66 (n=11) · CORE LABORATORIES (U.K.) LIMITED DAMAGED; SLTST/SHALE - NO ANALYSIS | SST GRY M-VFGR EX CALC CMT; SST GRY P SRT CRS-VFGR SIL CMT; SST GRY VFGR SIL CMT SLTY CARB LAM; SST GYR M-VFGR EX CALC CMT; SST GYR M-VFGR SIL CMT; SST/SLTST GRY MGR-SLT SIL CMT P SNDY/SLTY LAM; SST/SLTST GRY MGR-SLT SIL CMT P SNDY/SLTY LAM C LENS MIC PYR .
16/21a- 18 ↳ Plug 34 2113.94 -- φ 25.2% · Kh 714.0 mD · Kv 258.0 mD · So 18.5% · Sw 61.7% · Density 2.67 · CORE LABORATORIES (U.K.) LIMITED SST GRY P SRT CRS-VFGR SIL CMT --
16/21a- 18 ↳ Plug 35 2114.093 -- φ 23.8% · Kh 595.0 mD · Kv 715.0 mD · So 8.1% · Sw 76.7% · Density 2.65 · CORE LABORATORIES (U.K.) LIMITED SST GRY P SRT CRS-VFGR SIL CMT --
16/21a- 18 ↳ Plug 36 2114.58 -- φ 18.2% · Kh 1.1 mD · So 4.6% · Sw 84.1% · Density 2.63 · CORE LABORATORIES (U.K.) LIMITED SST GRY VFGR SIL CMT SLTY CARB LAM --
16/21a- 18 ↳ Plug 37 2114.733 -- φ 14.3% · Kh 1.4 mD · So 5.6% · Sw 85.1% · Density 2.69 · CORE LABORATORIES (U.K.) LIMITED SST GRY M-VFGR EX CALC CMT --
16/21a- 18 ↳ Plug 38 2115.221 -- φ 23.0% · So 11.0% · Sw 82.0% · Density 2.65 · CORE LABORATORIES (U.K.) LIMITED DAMAGED | SST GYR M-VFGR SIL CMT --
16/21a- 18 ↳ Plug 39 2115.495 -- φ 22.1% · Kv 139.0 mD · So 3.9% · Sw 86.8% · Density 2.65 · CORE LABORATORIES (U.K.) LIMITED DAMAGED | SST GYR M-VFGR SIL CMT --
16/21a- 18 ↳ Plug 40 2115.647 -- φ 6.5% · Kh 0.1 mD · So 10.6% · Sw 76.5% · Density 2.67 · CORE LABORATORIES (U.K.) LIMITED SST GYR M-VFGR EX CALC CMT --
16/21a- 18 ↳ Plug 41 2116.074 -- φ 2.3% · Kh 0.0 mD · Kv 0.0 mD · So 10.9% · Sw 81.5% · Density 2.68 · CORE LABORATORIES (U.K.) LIMITED SST GYR M-VFGR EX CALC CMT --
16/21a- 18 ↳ Plug 42 2116.226 -- φ 1.8% · Kh 0.0 mD · Kv 0.0 mD · So 13.2% · Sw 81.3% · Density 2.67 · CORE LABORATORIES (U.K.) LIMITED SST GYR M-VFGR EX CALC CMT --
16/21a- 18 ↳ Plug 43 2116.592 -- φ 20.7% · Kh 2.0 mD · So 7.0% · Sw 91.9% · Density 2.66 · CORE LABORATORIES (U.K.) LIMITED SST/SLTST GRY MGR-SLT SIL CMT P SNDY/SLTY LAM --
16/21a- 18 ↳ Plug 44 2116.836 -- φ 17.3% · Kh 0.3 mD · Kv 0.1 mD · So 7.8% · Sw 88.0% · Density 2.66 · CORE LABORATORIES (U.K.) LIMITED SST/SLTST GRY MGR-SLT SIL CMT P SNDY/SLTY LAM C LENS MIC PYR --
16/21a- 18 ↳ Plug 45 2117.141 -- CORE LABORATORIES (U.K.) LIMITED SLTST/SHALE - NO ANALYSIS --
16/21a- 18 ↳ Plug 46 2117.446 -- CORE LABORATORIES (U.K.) LIMITED SLTST/SHALE - NO ANALYSIS --
16/21a- 18 ↳ Plug 47 2117.75 -- CORE LABORATORIES (U.K.) LIMITED SLTST/SHALE - NO ANALYSIS --
16/21a- 18 ↳ Plug 48 2118.055 -- CORE LABORATORIES (U.K.) LIMITED SLTST/SHALE - NO ANALYSIS --
16/21a- 18Z Cuttings 502.92 2473.45 -- -- wet samples .
16/21a- 18Z Core #1 2292.1 2309.16 -- -- .
16/21a- 18Z Core #2 2310.38 2328.67 -- -- .
16/21a- 18Z Core #3 2328.67 2337.36 -- -- .

Wireline Log Inventory (Ingested Curves)

Wellbore Depth Start (m) Depth Stop (m) Typed Curves Auto-scaled Ingested
16/21a- 18 2068.830078125 2270.150390625 10 0 2026-08-06 09:18:54.469964+00 View Log
16/21a- 18Z 174.65040588378906 2473.147216796875 10 0 2026-08-06 09:18:56.848436+00 View Log

Source LAS Manifest (Best Curve per Type)

Open full Manifest browser
16/21a- 18
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density DEN OGA Batch Unzipped 2082.3936 2270.1504 1233
cable_tension TENS OGA Batch Unzipped 2063.8008 2270.1504 1355
deep_resistivity RES_DEP OGA Batch Unzipped 2082.3936 2265.2736 1201
density_correction DENC OGA Batch Unzipped 2082.3936 2270.1504 1233
micro_resistivity RES_MIC OGA Batch Unzipped 2082.3936 2261.0064 1173
neutron_por NEU OGA Batch Unzipped 2068.83 2265.5784000000003 1292
pef PEF OGA Batch Unzipped 2082.3936 2270.1504 1233
porosity PHIE OGA Batch Unzipped 2081.784 2264.664 1201
potassium POTA OGA Batch Unzipped 2068.83 2261.616 1266
shallow_resistivity RES_SLW OGA Batch Unzipped 2082.3936 2265.2736 1201
thorium THOR OGA Batch Unzipped 2068.83 2261.616 1266
uranium URAN OGA Batch Unzipped 2068.83 2261.616 1266
vshale VCALY OGA Batch Unzipped 2081.784 2264.664 1201
water_sat SW OGA Batch Unzipped 2081.784 2264.664 1201
16/21a- 18Z
Curve Type Best Mnemonic Source Depth Start (m) Depth Stop (m) Samples
bulk_density DEN OGA Batch Unzipped 519.6840000000001 2421.9408000000003 12398
caliper CALI OGA Batch Unzipped 1988.5152 2419.9596 2423
comp_sonic DT OGA Batch Unzipped 444.70320000000004 2473.1472000000003 13239
deep_resistivity RES_DEP OGA Batch Unzipped 444.70320000000004 2473.1472000000003 13305
density_correction DENC OGA Batch Unzipped 2225.3448000000003 2421.9408000000003 1291
gamma_ray GR OGA Batch Unzipped 174.65040000000002 2473.1472000000003 14948
med_resistivity RES_MED OGA Batch Unzipped 444.70320000000004 2473.1472000000003 13305
neutron_por NEU OGA Batch Unzipped 1989.4296000000002 2421.9408000000003 2448
shallow_resistivity RES_SLW OGA Batch Unzipped 174.65040000000002 2473.1472000000003 15068
sp SP OGA Batch Unzipped 174.65040000000002 2473.1472000000003 15069

Survey Inventory (Deviation)

Open full Survey detail
Wellbore Stations Max MD (m) Max TVDSS (m) Survey File
16/21a- 18 0 -- -- --
16/21a- 18Z 0 -- -- --

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