6507/4-2 S
Export: PDF
-
General information
-
Wellbore history
GeneralWell 6507/4-2 S was drilled to test the Dvalin prospect on the Revfallet Fault Complex between the Victoria and rfugl discoveries in the Norwegian Sea. The primary objective for the well was to prove hydrocarbons in the Middle Jurassic Garn Formation in the Fangst Group. The secondary objectives were to prove hydrocarbons in the Cretaceous Lysing and Lange Formations.Operations and resultsWildcat well 6507/4-2 S was spudded with the semi-submersible installation Deepsea Aberdeen on 20 February 2021 and drilled to TD at 4485 m (4430 m TVD) m in the early Jurassic Ror Formation. Non-production time was 19.7 days (22%) mainly due to ruptured BOP control Multiplex cable during a WOW period. This occurred during logging operations in the 8 1/2" section. The well was drilled with seawater and hi-vis pills down to 1500 m and with Innovert NS oil-based mud from 1500 m to TD.The well proved gas in the Garn Fm, with no proven gas-water contact, it proved gas/condensate in the Lysing Fm with gas-water contact at 2923.5 m (2915 m TVD), and it proved gas and oil in four differently pressured sand layers in the Lange Fm. No hydrocarbon contacts were identified in the Lange Formation. Shows were observed in the hydrocarbon bearing sands in the Lange and Garn formations. The deepest show in the Garn Formation was at 4363 m. In the Lysing Formation no shows were observed.Three cores were cut in succession from 4262.4 to 4326.7 m in the Garn Formation. Total recovery was 100%. MDT fluid samples were taken in the Lysing Formation at 2897.5 m (gas condensate), 2909.2 (gas condensate) and 2961.5 m (water), in the Lange Formation at 3597.6 m (wet gas), 3701.6 m (oil) and 3822.3 m (oil), and in the Garn Formation at 4264 m (wet gas), 4268.6 m (wet gas) and 4326.6 m (wet gas).The well was permanently abandoned on 19 May 2021 as an oil and gas discovery.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]1510.004485.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom14262.44273.6[m ]24274.04282.0[m ]34282.04326.7[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]63.9Cores at the Norwegian Offshore Directorate Cores available for sampling?YES -
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 typeCONDUCTOR30541.036544.00.00INTERM.13 3/81454.517 1/21500.01.64FITINTERM.9 7/82832.012 1/42841.01.77LOTLINER7 5/84028.09 1/44029.02.16FITOPEN HOLE4485.06 1/24485.00.00 -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]AIT PEX HNGS MSIP NGI PPC28324020CMR XPT NEXT28503900CMR XPT NEXT42364455ECS43274327LWD - ABG DGR EWR PWD PCDC15002841LWD - AFR ABG PCDC DGR ADR ALD -28414029LWD - COREA142624274LWD - COREA242744282LWD - COREA342824326LWD - CTN XBAT XCAL PWD28414029LWD - DGR EWR PWD PCDC5441500LWD - EWR DGR DM PWD40294262LWD - EWR DGR DM PWD ALD CTN43264485LWD - HO482544LWD - PCDC PWD40294029MDT28973900MDT38224020MDT43274327MDT TLC42644290QAIT PPC ADT APS HLDS HNGS38434487QGEO SS PPC40004472SWC42634365SWC43304365SWC SGT MSCT28324020SWC SGT MSCT28324020USIHD CBL21624025VSP9114355 -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit482487144918961896198819882032210021002342277128902890296335503823382342624262435043614423442344464453 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured3601.031.03.8Sea Water5441.4919.08.6Water Base13821.6736.04.7INNOVERT14521.4926.09.5INNOVERT15031.2918.010.0Water Base16501.5133.09.0Innovert20201.5540.011.9INNOVERT25051.6741.03.3INNOVERT25621.5533.011.4INNOVERT28201.5534.010.0INNOVERT28411.5533.010.0INNOVERT28451.5930.07.1INNOVERT28701.5829.07.1INNOVERT29251.5729.05.7Innovert30411.6129.06.2Innovert30951.6428.07.6Innovert30981.6428.05.7Innovert36901.6531.04.7INNOVERT40291.6728.08.6INNOVERT44851.6740.07.6INNOVERT