7120/10-1
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General information
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Wellbore history
GeneralWildcat well 7120/10-1 is located in the Troms I area in the southwestern part of the Hammerfest Basin, close to the Troms-Finnmark Fault Complex. The main objective of the well was to test the Middle to Early Jurassic sands of the B-prospect located in the south-eastern part of the blockOperations and resultsThe well was spudded with the semi-submersible installation Zapata Ugland on 10 September 1984 and drilled to TD at 2000 m in the Late Triassic. While drilling the 36" hole a boulder zone was encountered at 210 m to 248 m, which made it difficult to set the 30" casing. When pressure testing the seal assembly before drilling out of the 9 5/8" casing shoe, a leak was found in the well head connector. The leakage was repaired before drilling of the 8 1/2" hole section. The well was drilled using gel/seawater down to 534 m, with bentonite/CMC from 534 m to 1302 m, and with gel/lignosulphonate/seawater from 1302 m to TD.No hydrocarbons were encountered in the well. No potential reservoir sands were present above the Middle Jurassic. In the Middle Jurassic to Top Triassic interval a net 200 m of good quality potential reservoir sandstone was penetrated.One core was cut in the Middle Jurassic Stø Formation from 1570 m to 1584 m. Twenty-two RFT pressure readings were obtained from 1570 m to 1589 m, showing a saltwater pressure gradient. A fluid sample was taken at 1573.9 m. The sample contained mud filtrate without any gas or any smell or sign of hydrocarbons.The well was permanently abandoned on 8 September 1984 as a dry hole.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]250.001998.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom11570.01583.5[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]13.5Cores at the Norwegian Offshore Directorate Cores available for sampling?YES -
Core photos
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Palynological slides at the Norwegian Offshore Directorate
Palynological slides at the Norwegian Offshore Directorate Sample depthDepth unitSample typeLaboratory270.0[m]DC300.0[m]DC330.0[m]DC360.0[m]DC390.0[m]DC420.0[m]DC450.0[m]DC480.0[m]DC510.0[m]DC540.0[m]DC570.0[m]DC580.0[m]DC600.0[m]DC630.0[m]DC660.0[m]DC690.0[m]DC720.0[m]DC750.0[m]DC760.0[m]DC780.0[m]DC810.0[m]DC820.0[m]DC840.0[m]DC870.0[m]DC900.0[m]DC930.0[m]DC960.0[m]DC990.0[m]DC1020.0[m]DC1050.0[m]DC1080.0[m]DC1090.0[m]DC1110.0[m]DC1140.0[m]DC1170.0[m]DC1200.0[m]DC1210.0[m]DC1230.0[m]DC1240.0[m]DC1260.0[m]DC1290.0[m]DC1317.0[m]DC1331.0[m]SWCRRI1350.0[m]DC1360.0[m]SWCRRI1380.0[m]DC1398.0[m]SWCRRI1405.0[m]SWCRRI1410.0[m]DC1440.0[m]DC1442.0[m]SWCRRI1467.0[m]SWC1470.0[m]DC1500.0[m]DC1522.0[m]SWC1530.0[m]DC1537.0[m]SWCRRI1560.0[m]DC1590.0[m]DC1615.0[m]SWCRRI1620.0[m]DC1650.0[m]DC1680.0[m]DC1710.0[m]DC1740.0[m]DC1770.0[m]DC1800.0[m]DC1830.0[m]DC1860.0[m]DC1890.0[m]DC1893.0[m]SWCRRI1920.0[m]DC1926.0[m]SWCRRI1926.0[m]SWCRRI1940.0[m]SWCRRI1950.0[m]DC1956.0[m]DC1965.0[m]DC1980.0[m]DC1998.0[m]DC -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit210444444531531694694121013531394153315681568165517961914 -
Composite logs
Composite logs Document nameDocument formatDocument size [MB]pdf0.36 -
Geochemical information
Geochemical information Document nameDocument formatDocument size [MB]pdf0.63 -
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]pdf9.65pdf17.86pdf1.47 -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]CST13061995ISF SLS GR CAL2101999LDL CNL GR CAL5222000RFT GR15701989SHDT13022000TEMP2101200VELOCITY9002000 -
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 typeCONDUCTOR30244.036257.00.00LOTINTERM.13 3/8521.017 1/2610.00.00LOTINTERM.9 5/81300.012 1/41317.01.88LOTOPEN HOLE2000.08 1/22000.00.00LOT -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured2161.00WATER BASED15.08.19842371.00WATER BASED15.08.19842481.00WATER BASED15.08.19842531.12WATER BASED15.08.19842531.0615.023.9WATER BASED15.08.19842531.0615.023.9WATER BASED15.08.19844401.099.05.3WATER BASED16.08.19845351.1010.04.8WATER BASED21.08.19845351.1010.04.8WATER BASED21.08.19845351.1010.04.8WATER BASED17.08.19845861.1511.012.9WATER BASED21.08.19849001.1816.07.7WATER BASED21.08.198411961.2213.09.6WATER BASED21.08.198413171.2213.012.9WATER BASED22.08.198413171.2613.012.5WATER BASED23.08.198413171.2613.012.5WATER BASED23.08.198413501.3312.06.2WATER BASED06.09.198413711.2611.05.3WATER BASED28.08.198415011.2614.08.6WATER BASED29.08.198415701.3012.06.7WATER BASED30.08.198415841.2811.05.3WATER BASED31.08.198416111.3414.08.6WATER BASED03.09.198418161.3413.09.6WATER BASED03.09.198419201.3614.07.7WATER BASED03.09.198419611.3414.08.1WATER BASED04.09.1984 -
Thin sections at the Norwegian Offshore Directorate
Thin sections at the Norwegian Offshore Directorate DepthUnit1570.00[m ]1571.00[m ]1572.00[m ]1573.00[m ]1574.00[m ]1576.00[m ]1578.00[m ]1580.00[m ]1581.00[m ]1583.00[m ] -
Pressure plots
Pressure plots The pore pressure data is sourced from well logs if no other source is specified. In some wells where pore pressure logs do not exist, information from Drill stem tests and kicks have been used. The data has been reported to the NPD, and further processed and quality controlled by IHS Markit.Pressure plots Document nameDocument formatDocument size [MB]pdf0.25