30/6-21
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Generell informasjon
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Brønnhistorie
GeneralWell 30/6-21 was drilled on the Alpha North structure in the Oseberg fault block. Well 30/6-7 proved oil in the Ness Formation in 1982. The main purpose of well 30/6-21 was to test the hydrocarbon content in the Oseberg Formations. The well was located in a position where it could be utilized as a subsea oil producer/PTS well.Operations and resultsAppraisal well 30/6-21 was spudded with the semi-submersible rig Vildkat Explorer on 22 February 1987 and drilled to TD at 3100 m in Early Jurassic rocks of the Statfjord Group. Drilling proceeded without significant problems except for some tight hole problems in the upper Oseberg Formation. The well was drilled with sea water and hi-vis pills down to 664 m and with Enviromul oil based mud from 664 m to TD.Top Brent Group, Ness Formation was penetrated at 2575 m and proved to be oil filled down to top Dunlin at 2670.5 m. This was a down-to oil contact. The RFT data showed a fluid density of .66 g/cc. The Ness Formation proved not to be a reservoir rock due to lack of sand, while the Oseberg Formation had a net/gross ratio close to 1.0. The Cook- and Statfjord formations were both water filled.Four cores were cut from 2563 m at base Shetland to 2669 m at top Dunlin with close to 100% recovery. RFT fluid samples were taken at 2590 m, 2619 m, and 2660 m.The well was suspended on 9 April 1987 as an oil appraisal well.TestingOne Drill Stem Test was performed in the interval 2645 to 2657 m in the Oseberg Formation. It produced 342 Sm3 oil and 50885 Sm3 gas /day through a 9.5 mm choke. The GOR was 149 Sm3/Sm3, the oil density was 0.847, and the gas gravity was 0.724 (air = 1). The test temperature was 106.1 deg C. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]660.003100.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12563.02580.3[m ]22581.02596.7[m ]32597.02651.9[m ]42652.02668.7[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]104.6Borekjerner 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 tilgjengeligDSTDST12645.502657.50YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet13770689519931993207521542265227925752575261526702670285429223052 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.38pdf0.29 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf2.57pdf3.49 -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.0264626589.5Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.0106Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.0342510000.8470.724149 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL VDL CET GR23932770CBL VDL GR12751701CBL VDL GR21352543CST26723094DIL LSS GR26003105DIL LSS GR CAL6502564DITE SDT GR25432671EPT25452930LDL CNL GR22342673LDL CNL NGT GR CAL25403106MWD - GR RES1371720RFT25782660RFT25900RFT25902665RFT26173093RFT26190RFT26600VSP12301720 -
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 formasjonstestCONDUCTOR30221.036225.00.00LOTSURF.COND.20650.026665.00.00LOTINTERM.13 3/81704.017 1/21720.01.59LOTINTERM.9 5/82543.012 1/42560.01.60LOTLINER72856.08 1/23100.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling1301.5035.011.0OIL BASED16.03.19872251.05WATER23.02.19872250.00WATER24.02.19873001.00OIL BASED08.04.19873001.00OIL BASED13.04.19874531.06WATER25.02.19876151.17WATER26.02.19876641.35WATER27.02.19876640.0034.016.0OIL02.03.19877271.3534.016.0OIL02.03.198711151.3635.014.0OIL02.03.198711150.0032.013.0OIL03.03.198712881.3637.013.0OIL04.03.198713511.3534.012.0OIL05.03.198717201.3632.012.0OIL06.03.198717200.0028.09.0OIL09.03.198717231.5034.011.0OIL10.03.198720091.4933.011.0OIL11.03.198723471.4934.012.0OIL12.03.198725601.5035.011.0OIL BASED13.03.198725601.3523.08.0OIL BASED16.03.198726521.3620.07.0OIL BASED17.03.198726691.3721.07.0OIL BASED18.03.198727341.3620.06.0OIL BASED19.03.198727991.2519.05.0OIL BASED25.03.198727991.2519.05.0OIL BASED26.03.198727991.2520.05.0OIL BASED30.03.198727991.2519.06.0OIL BASED30.03.198727991.2523.06.0OIL BASED01.04.198727991.2521.06.0OIL BASED01.04.198727991.2521.05.0OIL BASED02.04.198727991.2622.05.0OIL BASED03.04.198727991.2522.06.0OIL BASED06.04.198727991.2522.08.0OIL BASED06.04.198727991.2523.06.0OIL BASED07.04.198728561.3721.06.0OIL BASED24.03.198728601.3720.06.0OIL BASED30251.3720.07.0OIL BASED20.03.198731001.3721.07.0OIL BASED58101.3523.08.0OIL BASED16.03.1987 -
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]pdf0.22