30/2-2
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Generell informasjon
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Brønnhistorie
GeneralWell 30/2-2 was drilled on the Mokkukalven Fault Complex north of the Oseberg Field in the North Sea. The objective was to test possible hydrocarbon accumulations in the Huldra Field, on a structural high that is separated from Huldra discovery well 30/2-1 with significant faults. Well 30/2-1 encountered a 119 m gas column in the Brent Group with a down-to contact at 3793 m. The actual gas/water or oil/water contact could not be established. The main target for 30/2-2 was the Brent Group, believed to be some 70 m deeper than the gas column in 30/2-1.Operations and resultsAppraisal well 30/2-2 was spudded with the semi-submersible installation Dyvi Delta on 19 December 1984 and drilled to TD at 4172 m in the Early Jurassic Drake Formation. When doing the reservoir logging, a radioactive part of the logging tool was left in the hole. This accident caused a sidetrack from 3894 m KB to TD. The sidetrack ran parallel to the original hole at a distance of approximately 20 m. The intention was to drill 50 m into the Statfjord Formation, but the well was finished in the Drake Formation due to hole conditions. The well was drilled with spud mud down to 214 m, with gel/seawater from 214 m to 1023 m, with gypsum/CMC mud from 1023 m to 3802 m, and with gel/lignosulphonate from 3802 m to TD.Gas bearing Brent sandstone was encountered at 3935 m, with the gas-water contact somewhere in the interval 3975 - 4080 m. No distinct contact was possible to recognize from logs or shows, but later geochemical analyses of the corers indicated a contact at ca 3984 m. Fluorescence indicating shows was first recorded on claystone/limestone cuttings in the interval 2204 m to 2267 m in the Lista Formation. Intermittent golden cut was observed on cuttings samples in the interval 2489 m to 2585 m in the Shetland Group. Otherwise, oil/condensate shows were recorded on sandstones from the Brent Group through the hydrocarbon-bearing reservoir. Below the contact, weak shows believed to relate to in-situ kerogen in coals and shales were recorded down to TD.A total of 157 m conventional core was recovered in eighteen cores in the interval from 3908 m in the lower Heather Formation, through all of Brent Group and down to 4139.1 m in the uppermost Drake Formation. All cores were cut in the original hole, before side-tracking. Log runs 1 to 5 were also run in the original hole, while run 6 and 7 were run in the sidetrack. No wire line fluid samples were taken.The well was permanently abandoned on 4 May 1985 as a gas appraisal well.TestingThree drill stem tests were conducted in the Brent Group.DST 1B tested the interval 4071 - 4076 m in the Etive Formation. The test flowed water at only five m3/day through a 19.05 mm choke during a 7.07 hours flow period. The maximum temperature reading was 150 °C. DST 1A failed due to technical problems.DST 2B tested the intervals 4011-4013 m, 4017-4025 m, and 4035 - 4042 m in the Ness Formation. The test flowed water at only eight m3/day through a 19.05 mm choke during a 13.5 hours flow period. The maximum temperature reading was 148 °C. DST 2A failed due to technical problems.DST 3 tested the intervals 3935 - 3949 m, 3955 – 3959 m, and 3967-3974 m in the Tarbert Formation. It produced 227600 Sm3 gas and 105 Sm3 condensate /day through a 19.05 mm choke. The GOR was 2170 Sm3/Sm3. The maximum temperature reading was 137 °C. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?NOBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]220.004172.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet13908.03912.5[m ]23939.03957.3[m ]33957.33965.8[m ]43966.03979.8[m ]53979.83987.6[m ]63987.83989.6[m ]73989.63993.5[m ]83993.53997.5[m ]94014.04025.6[m ]104026.04027.9[m ]114029.04031.6[m ]124031.84047.7[m ]134047.74048.9[m ]144048.94052.5[m ]154076.04093.8[m ]164094.04112.3[m ]174112.34130.3[m ]184130.54135.5[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]158.4Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligDSTTEST33935.003974.0023.04.1985 - 00:00YES -
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 formasjonstestCONDUCTOR30214.536214.50.00LOTSURF.COND.201008.0261023.01.61LOTINTERM.13 3/82350.017 1/22365.02.03LOTINTERM.9 5/83778.012 1/43802.02.14LOTLINER74170.08 1/24170.00.00LOT -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.04071407619.12.04011404219.13.03935397419.1Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.02.03.0Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.02.03.01052260000.8080.7342160 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL7222345CBL24253788CBL36004127CDL CNS GR2144163DIL BCS CAL GR2144164DLL MSF GR10062718FED23452716NGT36654175SFT39374100VELOCITY8004125 -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet1527838928921967196720412063222422242533344236793702370237763776382439353935395940704075409841354135 -
Geokjemisk informasjon
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Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf5.09pdf29.56 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.30pdf0.30 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling16701.119.07.3WATERBASED04.01.198516701.119.07.3WATER BASED04.01.198518701.259.010.0WATER BASED07.01.198518701.259.010.0WATERBASED07.01.198519781.3510.013.0WATER BASED07.01.198519781.3510.013.0WATERBASED07.01.198521221.4515.015.2WATER BASED07.01.198521221.4515.015.2WATERBASED07.01.198522581.4516.08.3WATERBASED07.01.198522581.4516.08.3WATER BASED07.01.198523651.5016.08.4WATER BASED09.01.198523651.5317.08.9WATER BASED09.01.198523651.5516.07.0WATER BASED14.01.198523651.5016.08.4WATERBASED09.01.198523650.0017.08.9WATERBASED09.01.198523650.0016.07.0WATERBASED14.01.198524721.5518.07.4WATERBASED14.01.198524721.5518.07.4WATER BASED14.01.198525331.6020.07.9WATER BASED15.01.198525331.6020.07.9WATERBASED15.01.198525561.7021.07.4WATERBASED15.01.198525561.7021.07.4WATER BASED15.01.198526051.7022.07.9WATER BASED16.01.198526051.7022.07.9WATERBASED16.01.198526191.7322.07.4WATER BASED16.01.198526191.7322.07.4WATERBASED16.01.198527041.7722.07.0WATERBASED17.01.198527041.7722.07.0WATER BASED17.01.198528021.7519.07.0WATER BASED18.01.198528021.7519.07.0WATERBASED18.01.198529091.7822.08.0WATERBASED21.01.198529091.7822.08.0WATER BASED21.01.198529801.7922.08.0WATERBASED28.01.198529801.7922.08.0WATER BASED28.01.198538021.8222.06.0WATERBASED11.02.198538021.8222.06.0WATER BASED11.02.198538841.9125.08.0WATER BASED18.02.198538841.9125.08.0WATERBASED18.02.198539381.9635.08.0WATER BASED01.04.198539381.9635.08.0WATERBASED01.04.198539501.9635.08.0WATERBASED01.04.198539501.9635.08.0WATER BASED01.04.198540131.9426.08.8WATERBASED26.02.198540131.9426.08.8WATER BASED26.02.198540191.9635.08.0WATER BASED01.04.198540191.9635.08.0WATERBASED01.04.198541001.9635.08.0WATERBASED01.04.198541001.9635.08.0WATER BASED01.04.198541721.9635.08.4WATER BASED26.03.198541721.9635.08.4WATERBASED26.03.198541741.9426.08.8WATER BASED06.03.198541741.9426.08.8WATERBASED06.03.1985 -
Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie2000.0[m]CGEOST2018.0[m]CGEOST2030.0[m]CGEOST2048.0[m]CGEOST2060.0[m]CGEOST2078.0[m]CGEOST2090.0[m]CGEOST2108.0[m]CGEOST2120.0[m]CGEOST2138.0[m]CGEOST2150.0[m]CGEOST2168.0[m]CGEOST2180.0[m]CGEOST2198.0[m]CGEOST2210.0[m]CGEOST2228.0[m]CGEOST2240.0[m]CGEOST2264.0[m]CGEOST2270.0[m]CGEOST2288.0[m]CGEOST2300.0[m]CGEOST2318.0[m]CGEOST2330.0[m]CGEOST2348.0[m]CGEOST2360.0[m]CGEOST2378.0[m]CGEOST2390.0[m]CGEOST2408.0[m]CGEOST2420.0[m]CGEOST2438.0[m]CGEOST2450.0[m]CGEOST2468.0[m]CGEOST2480.0[m]CGEOST2496.0[m]CGEOST2518.0[m]CGEOST2528.0[m]CGEOST2542.0[m]CGEOST2558.0[m]CGOEST2570.0[m]CGEOST2585.0[m]CGEOST2600.0[m]CGEOST2618.0[m]CGEOST2630.0[m]CGEOST2648.0[m]CGEOST2660.0[m]CGEOST2678.0[m]CGEOST2690.0[m]CGEOST2708.0[m]CGEOST2720.0[m]DCGEOST2738.0[m]CGEOST2750.0[m]CGEOST2753.0[m]CGEOST2768.0[m]CGEOST2780.0[m]CGEOST2798.0[m]CGEOST2810.0[m]CGEOST2828.0[m]CGEOST2840.0[m]CGEOST2858.0[m]CGEOST2870.0[m]CGEOST2888.0[m]CGEOST2900.0[m]CGEOST2918.0[m]CGEOST2930.0[m]CGEOST2948.0[m]CGEOST2960.0[m]DCGEOST2978.0[m]CGEOST2990.0[m]CGEOST3008.0[m]CGEOST3020.0[m]CGEOST3038.0[m]CGEOST3068.0[m]CGEOST3080.0[m]CGEOST3098.0[m]CGEOST3110.0[m]CGEOST3128.0[m]CGEOST3140.0[m]CGEOST3158.0[m]CGEOST3170.0[m]CGEOST3188.0[m]CGEOST3200.0[m]CGEOST3230.0[m]CGEOST3248.0[m]CGEOST3260.0[m]CGEOST3278.0[m]CGEOST3290.0[m]CGEOST3308.0[m]CGEOST3320.0[m]CGEOST3338.0[m]CGEOST3350.0[m]CGEOST3368.0[m]CGEOST3380.0[m]CGEOST3398.0[m]CGEOST3410.0[m]CGEOST3428.0[m]CGEOST3440.0[m]CGEOST3458.0[m]CGEOST3470.0[m]CGEOST3488.0[m]CGEOST3500.0[m]CGEOST3518.0[m]CGEOST3530.0[m]CGEOST3548.0[m]CGEOST3560.0[m]CGEOST3578.0[m]CGEOST3590.0[m]CGEOST3608.0[m]CGEOST3620.0[m]CGEOST3638.0[m]CGEOST3650.0[m]CGEOST3668.0[m]CGEOST3680.0[m]CGEOST3698.0[m]CGEOST3710.0[m]CGEOST3728.0[m]CGEOST3740.0[m]CGEOST3758.0[m]CGEOST3761.0[m]CGEOST3770.0[m]CGEOST3788.0[m]CGEOST3800.0[m]CGEOST3818.0[m]CGEOST3830.0[m]CGEOST3839.0[m]CGEOST3848.0[m]CGEOST3860.0[m]CGEOST3869.0[m]CGEOST3878.0[m]CGEOST3890.0[m]CGEOST3899.0[m]CGEOST3908.0[m]CGEOST3920.0[m]CGEOST3938.0[m]CGEOST3940.0[m]CGEOST3944.0[m]SWCGEOST3950.0[m]DCGEOST3953.0[m]CGEOST3956.0[m]CGEOST3956.0[m]DCGEOST3964.0[m]CGEOST3968.0[m]DCGEOST3970.0[m]CGEOST3975.0[m]CGEOST3976.0[m]CGEOST3977.0[m]DCGEOST3978.0[m]CGEOST3980.0[m]DCGEOST3980.0[m]CGEOST3983.0[m]CGEOST3985.0[m]DCGEOST3990.0[m]DCGEOST3994.0[m]DCGEOST3995.0[m]SWCGEOST3998.0[m]DCGEOST4004.0[m]SWCGEOST4010.0[m]DCGEOST4014.0[m]CGEOST4018.0[m]CGEOST4024.0[m]CGEOST4027.0[m]CGEOST4028.0[m]DCGEOST4029.0[m]DCGEOST4030.0[m]CGEOST4036.0[m]CGEOST4040.0[m]DCGEOST4040.0[m]CGEOST4043.0[m]CGEOST4044.0[m]DCGEOST4046.0[m]DCGEOST4047.0[m]DCGEOST4048.0[m]DCGEOST4048.0[m]CGEOST4049.0[m]CGEOST4051.0[m]DCGEOST4051.0[m]CGEOST4052.0[m]CGEOST4058.0[m]DCGEOST4061.0[m]SWCGEOST4070.0[m]SWCGEOST4070.0[m]DCGEOST4079.0[m]SWCGEOST4088.0[m]DCGEOST4089.0[m]CGEOST4093.0[m]DCGEOST4093.0[m]CGEOST4095.0[m]DCGEOST4096.0[m]DCGEOST4097.0[m]CGEOST4098.0[m]CGEOST4100.0[m]DCGEOST4106.0[m]SWCGEOST4115.0[m]SWCGEOST4118.0[m]SWCGEOST4118.0[m]DCGEOST4126.0[m]DCGEOST4128.0[m]CGEOST4130.0[m]DCGEOST4132.0[m]CGEOST4134.0[m]CGEOST4135.0[m]DCGEOST4148.0[m]DCGEOST4160.0[m]DCGEOST4172.0[m]DCGEOST -
Tynnslip i Sokkeldirektoratet
Tynnslip i Sokkeldirektoratet DybdeEnhet4134.68[m ]4132.38[m ]4124.70[m ]4106.35[m ]4106.02[m ]4098.90[m ]4093.30[m ]4089.65[m ]4086.65[m ]4082.65[m ]4078.65[m ]4040.25[m ]4020.73[m ]3984.42[m ]3973.67[m ]3968.45[m ]4116.65[m ]3963.74[m ]3957.82[m ]3955.70[m ]3951.45[m ]3944.90[m ]3939.95[m ]4022.30[m ]3945.00[m ]4102.00[m ]3974.90[m ]3949.40[m ]4042.90[m ]4079.40[m ]