30/6-18
Export: PDF
-
General information
-
Wellbore history
GeneralWell 30/6-18 was drilled on the Kappa structure, which is located in the south-western corner of the block. Kappa is an elongated down faulted block bounded by north south trending major faults to the east and the west. The structure is an easterly tilted fault block where the Base Cretaceous truncates both the Brent Group and the Statfjord Formation. The main objective of the well was to prove hydrocarbons in the Statfjord Formation by drilling on a location that leaves a minimum of possible reserves up dip of the well. Secondary objectives were to improve stratigraphical and structural knowledge of the area and to acquire input data for further exploration activity in blocks 30/6 and 30/9.Operations and resultsWildcat well 30/6-18 was spudded with the semi-submersible installation Byford Dolphin 1 August 1985 and drilled to TD at 3690 m in Late Triassic rocks. Drilling proceeded without any significant problems. The well was drilled with spud mud down to 658 m and with a KCl polymer mud from 658 m to TD. The Statfjord Formation came in 120 m higher than prognosed. The logs show that the Statfjord Formation contains 16 m of gas and 44 m of oil. Oi1/water contact was defined at 3181 m. The reservoir quality seems to be good. There is a separate column of 19 m oil further down in the Statfjord Formation. A thick shale sequence from 3287 to 3305 m separates the upper reservoir unit from the lower. The lower oil column is probably restricted to only one layer of sand with a gas cap on top. Eight cores were cut in the Statfjord Formation in the interval 3126 - 3215 m. Three sets of segregated RFT samples were retrieved from 3165 m, 3125.5 m, and 3312.8 m in the Statfjord Formation. The well was plugged and abandoned on 23 November 1985 as an oil and gas discovery.TestingThree drill stem tests were performed in this well. The intervals were 3306 m - 3323 m, 3198 m - 3210 m and 3164 m & 3173.2 m. -
Cuttings at the Norwegian Offshore Directorate
Cuttings at the Norwegian Offshore Directorate Cuttings available for sampling?NOCuttings at the Norwegian Offshore Directorate Cutting sample, top depth [m]Cutting samples, bottom depth [m]230.003690.00 -
Cores at the Norwegian Offshore Directorate
Cores at the Norwegian Offshore Directorate Core sample numberCore sample - top depthCore sample - bottom depthCore sample depth - uom13126.03128.5[m ]23139.03146.2[m ]33146.23148.0[m ]43148.03166.6[m ]53166.63184.0[m ]63184.03187.6[m ]73192.03210.3[m ]83210.33215.0[m ]Cores at the Norwegian Offshore Directorate Total core sample length [m]74.0Cores at the Norwegian Offshore Directorate Cores available for sampling?YES -
Core photos
-
Oil samples at the Norwegian Offshore Directorate
Oil samples at the Norwegian Offshore Directorate Test typeBottle numberTop depth
MD [m]Bottom depth
MD [m]Fluid typeTest timeSamples availableDSTDST1A3307.003324.0020.10.1985 - 00:00YES -
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 typeCONDUCTOR30219.036219.00.00LOTSURF.COND.20643.526654.01.43LOTINTERM.13 3/81598.017 1/21613.01.79LOTINTERM.9 5/83413.012 1/43486.01.76LOTOPEN HOLE3690.08 3/83690.00.00LOT -
Drill stem tests (DST)
Drill stem tests (DST) Test numberFrom depth MD
[m]To depth MD
[m]Choke size
[mm]1.03307332414.02.03198321014.03.03164317314.0Drill stem tests (DST) Test numberFinal shut-in pressure
[MPa]Final flow pressure
[MPa]Bottom hole pressure
[MPa]Downhole temperature
[°C]1.01262.01223.0119Drill stem tests (DST) Test numberOil
[Sm3/day]Gas
[Sm3/day]Oil density
[g/cm3]Gas grav. rel.airGOR
[m3/m3]1.06091619700.8112652.087128323.09571897440.8450.705198 -
Logs
Logs Log typeLog top depth [m]Log bottom depth [m]CBL VDL4301598CET CBL VDL11523400CST19973116CST19973122CST30353383CST34353690DLL MSFL GR30853210DLL MSFL GR31813415HRT501700ISF LSS SP GR321652ISF LSS SP GR6441599ISF LSS SP GR15983211ISF LSS SP GR31863424ISF LSS SP GR34193692LDT CAL GR6441598LDT CNL CAL GR15983213LDT CNL NGT CAL GR30503423LDT CNL NGT CAL GR34193693MWD - RES GR16503185RFT31223195RFT31223402RFT31253126RFT34293683SHDT15983418SHDT34193692VSP8983379 -
Lithostratigraphy
Lithostratigraphy Top depth [mMD RKB]Lithostrat. unit13359781589392795211011339143914541480157920472047212921972362238023802400258029132913298331213670 -
Composite logs
Composite logs Document nameDocument formatDocument size [MB]pdf0.64 -
Geochemical information
Geochemical information Document nameDocument formatDocument size [MB]pdf0.15 -
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]pdf2.80pdf28.30 -
Drilling mud
Drilling mud Depth MD [m]Mud weight [g/cm3]Visc. [mPa.s]Yield point [Pa]Mud typeDate measured1501.03WATER BASED25.11.19852141.05WATER BASED02.08.19852141.05WATER BASED06.08.19852141.05WATER BASED06.08.19855251.075.035.0WATER BASED06.08.19856541.165.021.0WATER BASED06.08.19856541.165.022.0WATER BASED06.08.19856541.165.023.0WATER BASED08.08.19856541.1516.011.0WATER BASED13.08.19856541.165.022.0WATER BASED06.08.19856541.1516.010.0WATER BASED09.08.19856541.1516.011.0WATER BASED13.08.19856541.1516.010.0WATER BASED09.08.19856541.165.023.0WATER BASED08.08.19858811.2015.011.0WATER BASED13.08.198512821.2122.012.0WATER BASED14.08.198514941.2827.014.0WATER BASED19.08.198516131.3030.016.0WATER BASED21.08.198516131.3026.013.0WATER BASED21.08.198516131.3027.012.0WATER BASED21.08.198516131.2626.012.0WATER BASED21.08.198516501.3537.013.0WATER BASED22.08.198519821.3537.016.0WATER BASED23.08.198521721.3823.011.0WATER BASED27.08.198523861.3827.011.0WATER BASED27.08.198524641.3930.012.0WATER BASED27.08.198526071.3910.018.0WATER BASED29.08.198527271.3923.08.0WATER BASED29.08.198527711.3920.07.0WATER BASED30.08.198528671.3920.08.0WATER BASED03.09.198529181.3919.07.0WATER BASED03.09.198530211.4118.06.0WATER BASED03.09.198530701.4221.07.0WATER BASED03.09.198531261.4219.08.0WATER BASED05.09.198531341.34WATER BASED22.11.198531361.4221.08.0WATER BASED06.09.198531461.4227.09.0WATER BASED06.09.198531641.34WATER BASED20.11.198531641.34WATER BASED21.11.198531661.4124.09.0WATER BASED09.09.198531821.34WATER BASED04.11.198531821.34WATER BASED05.11.198531821.34WATER BASED06.11.198531821.34WATER BASED12.11.198531821.34WATER BASED10.11.198531821.34WATER BASED20.11.198531821.34WATER BASED07.11.198531841.4124.08.0WATER BASED09.09.198531921.3927.09.0WATER BASED09.09.198531951.3521.08.0WATER BASED16.09.198531971.34WATER BASED04.11.198532151.3522.07.0WATER BASED16.09.198532151.3923.08.0WATER BASED12.09.198532151.3521.07.0WATER BASED16.09.198532151.3923.08.0WATER BASED11.09.198532151.3922.08.0WATER BASED12.09.198532151.3321.08.0WATER BASED13.09.198532851.3524.010.0WATER BASED24.09.198533041.34WATER BASED23.10.198533041.34WATER BASED29.10.198533041.34WATER BASED30.10.198533041.34WATER BASED31.10.198533221.3526.09.0WATER BASED24.09.198533711.3527.010.0WATER BASED24.09.198533721.3321.06.0WATER BASED09.10.198533721.3321.06.0WATER BASED09.10.198533721.3324.010.0WATER BASED10.10.198533721.36WATER BASED16.10.198533721.35WATER BASED17.10.198533721.35WATER BASED18.10.198533721.34WATER BASED21.10.198533721.34WATER BASED22.10.198533721.34WATER BASED20.10.198533721.34WATER BASED24.10.198533721.34WATER BASED23.10.198533901.3321.06.0WATER BASED07.10.198534281.3528.012.0WATER BASED24.09.198534281.3529.011.0WATER BASED24.09.198534281.3529.012.0WATER BASED24.09.198534281.3527.09.0WATER BASED25.09.198534281.3527.09.0WATER BASED03.10.198534281.3527.09.0WATER BASED27.09.198534511.3123.05.0WATER BASED03.10.198535271.3125.06.0WATER BASED03.10.198535881.3125.08.0WATER BASED03.10.198536501.3125.08.0WATER BASED03.10.198536901.3326.07.0WATER BASED07.10.1985 -
Palynological slides at the Norwegian Offshore Directorate
Palynological slides at the Norwegian Offshore Directorate Sample depthDepth unitSample typeLaboratory2626.0[m]SWCRRI2785.0[m]SWCRRI2880.0[m]DCRRI2890.0[m]DCRRI2900.0[m]SWCRRI2908.0[m]SWCRRI2912.0[m]SWCRRI2915.0[m]SWCRRI2918.0[m]SWCRRI2930.0[m]DCRRI2935.0[m]SWCRRI2952.5[m]SWCRRI2965.0[m]SWCRRI2970.0[m]DCRRI2975.0[m]SWCRRI2982.0[m]SWCRRI2990.0[m]SWCRRI2996.0[m]SWCRRI3000.0[m]DCRRI3001.5[m]SWCRRI3015.0[m]DCRRI3025.0[m]SWCRRI3058.0[m]SWCRRI3090.0[m]DCRRI3100.0[m]DCRRI3117.0[m]DCRRI3126.3[m]CRRI3128.5[m]CRRI3137.0[m]DCRRI3148.8[m]CRRI3159.2[m]CRRI3187.3[m]CRRI3193.1[m]CRRI3215.5[m]CRRI3238.0[m]SWCRRI3300.0[m]DCRRI3315.0[m]DCRRI3330.0[m]DCRRI3345.0[m]DCRRI3357.0[m]SWCRRI3360.0[m]DCRRI3375.0[m]DCRRI3383.2[m]SWCRRI3390.0[m]DCRRI3417.0[m]DCRRI3427.0[m]DCRRI3545.0[m]DCRRI3555.0[m]DCRRI