32/4-1
Export:
PDF
![PDF icon](https://factpages.sodir.no/Images/file-pdf.png)
-
General information
-
Wellbore history
GeneralWildcat well 32/4-1 was the first well drilled in Production Licence 205. It is located on the Horda Platform in the Northern North Sea about five kilometers east of the East Troll Gas Field. The primary objective of the well was to prove commercial reserves within the Upper Jurassic Sognefjord Formation sand reservoirs. The Alpha prospect was believed to be filled with oil spilled from the Troll Field. Secondary objectives were present in potential stacked Upper, Middle and Lower Jurassic sand reservoirs, in Triassic, and in possible Paleozoic sand reservoirs.Operations and resultsWell 32/4-1 was spudded 21 October 1996, using the semi-submersible drilling rig "Transocean 8". The first attempt to drill the well failed after experiencing problems when running the 13 3/8" casing. The casing unscrewed and parted at 619 m. The hole was filled with cement and abandoned. The rig was moved about 50 m to the north and the well was respudded. The well was drilled without major drilling problems, except for some difficulties with getting the 9 5/8" casing hanger through the BOP stack and mud losses when drilling through the Viking Group. The well was drilled into Basement rocks at a total depth of 3186 m. The well was drilled with spud mud to 720 m and water based KCl/Drispac with glycol from 720 m to TD.
The Upper Jurassic reservoir interval was encountered 6 m shallower than prognosed and contained 65.5 m of water-wet Sognefjord sandstones. In addition, water wet sandstones of the secondary targets were present as the Fensfjord, Krossfjord, Cook, Statfjord and Lunde Formations.
Four cores were cut in the Upper Jurassic. The two first were cut in the Heather Formation silt- and sandstones, while core 3 and 4 were cut in sandstones of the Sognefjord Formation (1220-1235.5 m, 1232.5-1237.5 m, 1237.5-1256 m and 1257-1275 m, respectively). A FMT water sample was collected from 1359 m.
The well was permanently plugged and abandoned as a dry well.TestingNo drill stem test was performed. -
Cuttings at the Norwegian Offshore Directorate
Cuttings at the Norwegian Offshore Directorate Cuttings available for sampling?YESCuttings at the Norwegian Offshore Directorate Cutting sample, top depth [m]Cutting samples, bottom depth [m]730.003186.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom11220.01232.6[m ]21232.61237.1[m ]31237.51242.1[m ]41256.01275.2[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]40.9Cores at the Norwegian Offshore Directorate Cores available for sampling?YES -
Core photos
-
Casing and leak–off tests
Casing and leak–off tests Casing typeCasing diam.
[inch]Casing depth
[m]Hole diam.
[inch]Hole depth
[m]LOT/FIT mud eqv.
[g/cm3]Formation test typeCONDUCTOR30394.036395.00.00LOTINTERM.13 3/8709.017 1/2710.00.00LOTINTERM.9 5/83186.012 1/43186.00.00LOT -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]DLL MLL MAC ORIT CN ZDL DSL11373155DLL MLL MAC ORIT DSL7081138FMT GR12471367MWD LWD DGR EWR43993132VSP GR6703170ZDL GR11373164 -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit336535535652837846846849894940956108110811106110911091216123813061366159515981645165016501655168016801733178317851791181618323132 -
Composite logs
Composite logs Document nameDocument formatDocument size [MB]pdf0.37 -
Geochemical information
-
Documents – reported by the production licence (period for duty of secrecy expired)
Documents – reported by the production licence (period for duty of secrecy expired) Document nameDocument formatDocument size [MB]pdf25.30 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured3521.30WATER BASED3701.10WATER BASED3951.20WATER BASED3991.202.0WATER BASED5561.202.0WATER BASED7201.207.0WATER BASED7231.1030.0WATER BASED9201.1046.0WATER BASED11531.1021.0WATER BASED11561.1037.0WATER BASED12321.1040.0WATER BASED12740.0024.0WATER BASED15410.0030.0WATER BASED19150.0024.0WATER BASED19800.0024.0WATER BASED20330.0028.0WATER BASED20720.0024.0WATER BASED22491.4131.0WATER BASED22840.0026.0WATER BASED24250.0031.0WATER BASED25880.0036.0WATER BASED29910.0029.0WATER BASED31320.0026.0WATER BASED31760.0030.0WATER BASED31860.0030.0WATER BASED -
Palynological slides at the Norwegian Offshore Directorate
Palynological slides at the Norwegian Offshore Directorate Sample depthDepth unitSample typeLaboratory730.0[m]DCRRI760.0[m]DCRRI800.0[m]DCRRI820.0[m]DCRRI840.0[m]DCRRI860.0[m]DCRRI880.0[m]DCRRI890.0[m]DCRRI910.0[m]DCRRI940.0[m]DCRRI960.0[m]DCRRI980.0[m]DCRRI1000.0[m]DCRRI1020.0[m]DCRRI1040.0[m]DCRRI1070.0[m]DCRRI1100.0[m]DCRRI1120.0[m]DCRRI1140.0[m]DCRRI1150.0[m]DCRRI1156.0[m]DCRRI1162.0[m]DCRRI1171.0[m]DCRRI1180.0[m]DCRRI1189.0[m]DCRRI1198.0[m]DCRRI1207.0[m]DCRRI1216.0[m]DCRRI1220.4[m]DCRRI1226.4[m]DCRRI1233.0[m]DCRRI1240.0[m]DCRRI1240.6[m]DCRRI1260.6[m]DCRRI1266.8[m]DCRRI1277.0[m]DCRRI1310.0[m]DCRRI1316.0[m]DCRRI1328.0[m]DCRRI1340.0[m]DCRRI1368.0[m]DCRRI1374.0[m]DCRRI1395.0[m]DCRRI1404.0[m]DCRRI1410.0[m]DCRRI1416.0[m]DCRRI1422.0[m]DCRRI1431.0[m]DCRRI1440.0[m]DCRRI1458.0[m]DCRRI1467.0[m]DCRRI1476.0[m]DCRRI1494.0[m]DCRRI1503.0[m]DCRRI1524.0[m]DCRRI1653.0[m]DCRRI1662.0[m]DCRRI1674.0[m]DCRRI1680.0[m]DCRRI1704.0[m]DCRRI1707.0[m]DCRRI1719.0[m]DCRRI1737.0[m]DCRRI1747.0[m]DCRRI1765.0[m]DCRRI1783.0[m]DCRRI1794.0[m]DCRRI1801.0[m]DCRRI1815.0[m]DCRRI1833.0[m]DCRRI1845.0[m]DCRRI1872.0[m]DCRRI1959.0[m]DCRRI2079.0[m]DCRRI2133.0[m]DCRRI2160.0[m]DCRRI2250.0[m]DCRRI2343.0[m]DCRRI2403.0[m]DCRRI2463.0[m]DCRRI2553.0[m]DCRRI2613.0[m]DCRRI2703.0[m]DCRRI2787.0[m]DCRRI2853.0[m]DCRRI2913.0[m]DCRRI3003.0[m]DCRRI3093.0[m]DCRRI3141.0[m]DCRRI3180.0[m]DCRRI