30/9-5 S
Eksport: PDF
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Generell informasjon
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Brønnhistorie
GeneralWell 30/9-5 S was drilled on the "J" prospect close to the western margin of the Horda Platform. The structure is bounded by Jurassic strata dipping down into the north, east and south and by the main Horda Platform fault to the west. The primary objective was to prove hydrocarbon accumulation in the Etive Formation of the Brent Group. Secondary objectives were possible hydrocarbons in sandstones if present in the Heather-Drake- and Cook Formations.Operations and resultsWildcat well 30/9-5 S was spudded with the semi-submersible installation Treasure Seeker on 27 May 1985 and drilled to TD at 2980 m (2963 m TVD) in the Triassic Hegre Group. Due to shallow gas indications on the site survey seismic the well location was moved approximately 150 m. The well was then deviated from a kick off point at 1000 m to reach the planned target. No significant problem was encountered in the operations. The well was drilled with seawater and gel down to 910 m, with KCl/polymer mud from 910 m to 1935 m, and with NaCl/polymer mud from 1935 m to TD.The well encountered a gas bearing Cook Formation and minor amounts of gas in the Brent Group. No additional hydrocarbon bearing reservoirs were encountered by the well.The Brent Group (2236-2253 m, 2222-2239 m TVD) was found severely eroded in the well with poorly developed sands. The net sand distribution is limited to a thin layer at the top of the formation. The rest of the formation appears to be very silty. The gross thickness is 17 m with a net pay of only 0.5 m. The average porosity is 20.2% and the water saturation 58.2%. The Cook Formation (2447-2466 m, 2433-2452 m TVD) has moderately good reservoir qualities in the upper part but is silty and tight in the lower part. The gross thickness is 19 m and the net pay is 7.9 m. The average porosity is 20.4% and the water saturation 24.7%. The Statfjord Formation was encountered water bearing at 2604 m (2589.5 m TVD). In addition to shows in the hydrocarbon-bearing sandstones in the Brent and Cook formations, local weak shows were recorded in the uppermost Statfjord Group sandstone, while continuous shows were described in dolomite stringers at 1945 m to 1960 m in the Balder Formation and at 2160 m to 2185 m in the massive limestones at the top of the Shetland Group.Two conventional cores were cut in the well, one in the Cook Formation from 2455 m to 2473.2 m, and one in the Statfjord Formation from 2608 m to 2626.3 m. Two RFT runs were performed and 25 pressure recordings were done. Segregated samples were taken at 2452 m in the Cook Formation (gas, a little condensate, and water) and at 2238.5 m in the Brent Group (gas, trace condensate, and water).The well was permanently abandoned on 19 July 1985 as a gas discovery.TestingNo drill stem test was performed. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?NOBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]220.002980.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12455.02472.3[m ]22608.02626.2[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]35.5Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie2242.0[m]SWCRRI2248.0[m]SWCRRI2251.0[m]SWCRRI2253.0[m]SWCRRI2255.0[m]SWCRRI2258.0[m]SWCRRI2262.0[m]SWCRRI2266.0[m]SWCRRI2281.0[m]SWCRRI2298.0[m]SWCRRI2305.0[m]SWCRRI2320.0[m]SWCRRI2334.0[m]SWCRRI2349.0[m]SWCRRI2357.0[m]SWCRRI2368.0[m]SWCRRI2382.0[m]SWCRRI2392.0[m]SWCRRI2404.0[m]SWCRRI2414.0[m]SWCRRI2425.0[m]SWCRRI2435.0[m]SWCRRI2448.0[m]SWCRRI2470.0[m]CRRI2488.0[m]SWCRRI2618.0[m]CRRI2624.0[m]CRRI -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet12864481519201920196920182157216122362253225324472466252726042872 -
Geokjemisk informasjon
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Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.26pdf0.24 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf3.81pdf13.49 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL VDL1251908CST20802502CST25222979DLL MSFL GR CAL22202645ISF LSS GR SP1262985LDL CNL CAL GR19082985LDL GR CAL8951912MWD RESISTIVITY20282929NGT22202979RFT22382940RFT22380SHDT19082985VSP1282985 -
Foringsrør og formasjonsstyrketester
Foringsrør og formasjonsstyrketester Type utforingUtforing diam.
[tommer]Utforing dybde
[m]Brønnbane diam.
[tommer]Brønnbane dyp
[m]LOT/FIT slam eqv.
[g/cm3]Type formasjonstestCONDUCTOR30216.036219.00.00LOTSURF.COND.20894.026910.01.66LOTINTERM.13 3/81908.017 1/21935.01.65LOTOPEN HOLE2980.012 1/42980.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling2191.05WATER BASED29.05.19852191.05WATER BASED31.05.19852191.05WATER BASED31.05.19855491.103.025.0WATER BASED31.05.19858851.096.014.0WATER BASED03.06.19858851.098.034.0WATER BASED03.06.19858851.098.034.0WATER BASED03.06.19858971.209.014.0WATER BASED03.06.19859101.03WATER BASED06.06.19859101.1214.05.0WATER BASED06.06.19859101.03WATER BASED06.06.19859101.2321.015.0WATER BASED06.06.19859101.1214.05.0WATER BASED06.06.198510001.1516.06.0WATER BASED06.06.198511881.1721.010.0WATER BASED10.06.198513431.2522.011.0WATER BASED10.06.198515251.3027.013.0WATER BASED10.06.198517141.3528.012.0WATER BASED10.06.198517461.3524.012.0WATER BASED11.06.198519351.3022.09.0WATER BASED16.06.198519350.00WATER BASED30.06.198519351.3029.011.0WATER BASED13.06.198519351.3124.010.0WATER BASED16.06.198519351.3022.09.0WATER BASED16.06.198519351.3027.08.0WATER BASED30.06.198519351.3030.013.0WATER BASED13.06.198519351.3029.011.0WATER BASED13.06.198519351.3124.010.0WATER BASED16.06.198519350.00WATER BASED16.06.198519350.00WATER BASED23.06.198519350.00WATER BASED26.06.198519351.3027.08.0WATER BASED30.06.198520281.3023.09.0WATER BASED30.06.198521711.3025.09.0WATER BASED01.07.198522501.2926.09.0WATER BASED02.07.198523671.2526.011.0WATER BASED03.07.198524551.2524.010.0WATER BASED04.07.198524711.2526.09.0WATER BASED10.07.198525291.2525.010.0WATER BASED10.07.198525881.2525.010.0WATER BASED10.07.198526081.2526.011.0WATER BASED10.07.198526591.2526.010.0WATER BASED10.07.198527751.2522.09.0WATER BASED10.07.198529051.2527.012.0WATER BASED14.07.198529471.2524.010.0WATER BASED14.07.198529801.2526.011.0WATER BASED14.07.198529801.2527.013.0WATER BASED15.07.198529801.2625.010.0WATER BASED17.07.198529801.2529.013.0WATER BASED14.07.198529801.2528.013.0WATER BASED16.07.198529801.2529.013.0WATER BASED14.07.198529801.2527.013.0WATER BASED15.07.198529801.2528.013.0WATER BASED16.07.198529801.2625.010.0WATER BASED17.07.1985 -
Trykkplott
Trykkplott Porertrykksdataene kommer fra logging i brønnen hvis ingen annen kilde er oppgitt. I noen brønner der trykk ikke er logget, er det brukt informasjon fra formasjonstester eller brønnspark. Trykkdataene er rapportert inn til Oljedirektoratet og videre prosessert og kvalitetssikret av IHS Markit.Trykkplott Dokument navnDokument formatDokumentstørrelse [MB]pdf0.23