6507/3-4
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General information
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Wellbore history
GeneralWell 6507/3-4 is located on the Alve structure, which is a horst, located in the north central part of block 6507/3 on the Dønna Terrace. The main objective of this appraisal well was to prove down flank oil resources in the Middle Jurassic sandstones of the Garn and upper Not Formations. The secondary objective was to prove oil in the Ile Formation.Operations and resultsWell was spudded with the vessel West Navigator on 14 March 2004 and drilled to TD at 4092 m in the Early Jurassic Åre Formation. The well was drilled with seawater and bentonite down to 1250 m, with KCl/polymer/glycol from 1250 m to 2300 m, and with oil based mud (Paratherm) from 2300 m to TD. A shallow gas warning class 1 was given for the interval between 950 to 1370 m, based on gas peaks observed in well 6507/3-1. A pilot hole was drilled down to 1250 m. No shallow gas was observed.The well penetrated the reservoir below the hydrocarbon-water contact in the Garn, Not and Ile Formations. Top Garn Formation was encountered 7 m below prognosis. Moveable hydrocarbons were not proven, only shows throughout the Garn and Not Formations and discontinuous weak to moderate shows in the Ile, Ror, and Tilje Formations from 3805 m to 4000 m. Two cores were cut in the Garn, Not and Ile Formations and nine MDT water samples were collected in Garn, Ile and Tilje Formations. The Garn sample from 3726 m contained approx 2 dl of hydrocarbon fluid, which proved to be mud filtrate (base oil) with some dissolved residual oil from the formation.The well was permanently abandoned on 30 April 2004 as a dry well with showsTestingNo 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]1260.004092.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom13728.03762.2[m ]23764.03818.3[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]88.5Cores at the Norwegian Offshore Directorate Cores available for sampling?YES -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit408408131316201620190019001942199519952124282428832883304031613161318537253725373837863856385639194047 -
Geochemical information
Geochemical information Document nameDocument formatDocument size [MB]pdf2.48 -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]AIT MSIP EMS GR ACTS ECRD36004092DSI IPLT GR ACTS17003686DSI ZVSP GPIT GR12504055IPLT ECS CMR200 GR ACTS ECRD36504092MDT GR ACTS ECRD37254045MDT GR ACTS ECRD37253949MDT GR ACTS ECRD37360MSCT GR ACTS37253980MWD - DIR GR RES PRESS12532310MWD - GR RES PWD SURV36863728MWD - GR RES PWD SURV MRIL38194092MWD - MPR DCP DIR4701250MWD MPR DCP - DIR GR RES PRESS23103686 -
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 typeCONDUCTOR30468.036470.00.00LOTSURF.COND.201241.0261250.01.57LOTINTERM.13 3/82300.017 1/22310.01.80LOTINTERM.9 5/83677.012 1/43686.01.55LOTOPEN HOLE4092.08 1/24092.00.00LOT -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured12501.3514.0SW / BENTONITE 119301.5425.0GLYDRIL 1223101.5425.0GLYDRIL 1230301.5029.0PARATHERM36771.3724.0PARATHERM37261.3724.0PARATHERM37271.3724.0PARATHERM -
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]pdf0.28