7120/10-1
Export: PDF
-
General information
-
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
-
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 -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]CST13061995ISF SLS GR CAL2101999LDL CNL GR CAL5222000RFT GR15701989SHDT13022000TEMP2101200VELOCITY9002000 -
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 -
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 -
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 -
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 ]