6407/7-2
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Generell informasjon
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Brønnhistorie
GeneralWell 6407/7-2 was drilled on the Njord A-structure in the southern part of the Halten Terrace. The Njord structure is located ca 30 km west of the Draugen Field. The primary objectives of the well were to test the reservoir properties of the pre-Tilje sequence and to find the oil-water contact in the central part of the A-structure. By this the volumetric potential of the structure could be established. The well would furthermore obtain seismic calibration to the base Cretaceous and intra Jurassic and intra Triassic events. It should penetrate a flat seismic event at approximately 2570 ms TWT. A Rogn Formation sand unit was expected at 2598 +/- 65 m.Operations and resultsWell 6407/7-2 was spudded with the semi-submersible installation Polar Pioneer on 20 November 1986. The 36" hole was drilled to 361 m where the MWD showed an inclination of 7.1 degrees. A respud was thus decided. The well was respudded on 20 November and drilled without significant problems to TD at 3320 m in the Triassic Red Beds. It was drilled with spud mud down to 780 m and with KCl/polymer mud from 780 m to TD.No Rogn Formation was encountered. Hydrocarbons were encountered in two different pressured reservoir zones in the Middle to Early Jurassic. The upper reservoir was a 14 m gas/condensate zone in the Ile Formation from 2697.5 m to 2711.5 m. A segregated RFT sample from this zone recovered gas and condensate. The lower and main reservoir zone was encountered from 2771 to 2877.5 m in the Tilje Formation and contained oil. Two drill stem testes were performed in this zone. The Åre Formation was encountered at 2877.5 m and consisted of sandstones with minor claystones and siltstones. The Åre Formation sandstones were cemented and with low porosity. The logs and cores proved the Åre Formation to be water bearing, although moderate quality RFT pressure data gave an oil gradient in the interval 2896 to 2925 m.Eleven cores were cut in the well with a total recovery of 171.25 m (87%). The first core was cut in the interval 2673 - 2688 m, two cores in the interval 2701 - 2742 m, and 8 cores in the interval 2775 - 2915 m. A segregated RFT sample from 2701.9 m recovered 2.1 Sm3 gas, 1.85 l condensate, and 0.9 l filtrate.The well was suspended on 21 January 1987 as a possible future development well or for long term testing. It is classified as an oil appraisal well.TestingTwo drill stem tests were performed in the Tilje Formation main reservoir.DST 1 in the interval 2869.8 - 2878.8 m produced 125 Sm3 oil and 23750 Sm3 gas /day through a 12.7 mm choke. The GOR was 190, the oil density was 0.829 g/cm3, and the gas gravity was 0.744 (air = 1). The CO2 content was 1.5 percent and the H2S content was 0.2 ppm. The down hole temperature measured in the test was 109.0 deg C.DST 2 in the interval 2801.5 - 2819.5 m produced 575 Sm3 oil and 105800 Sm3 gas /day through a 12.7 mm choke. The GOR was 184, the oil density was 0.825 g/cm3, and the gas gravity was 0.0.685 (air = 1). The CO2 content was 1.5 percent and the H2S content was 1.5 ppm. The down hole temperature measured in the test was 111.2 deg C. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]780.003320.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12673.02686.9[m ]22701.02718.9[m ]32723.02739.6[m ]42775.02787.1[m ]52791.52803.2[m ]62804.52823.5[m ]72823.52841.1[m ]82841.52869.4[m ]92869.52869.8[m ]102879.02896.0[m ]112896.02913.6[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]171.3Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie2675.9[m]COD2676.1[m]COD -
Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligDST2869.002878.0006.01.1987 - 00:00YESDSTDST22801.502819.50OIL12.01.1987 - 00:00YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet361361107817231723178619592467263726372652266826682681269727122771287829342980 -
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]pdf0.45pdf0.26 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf9.41pdf9.10 -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.02870287912.72.02802282012.7Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.02.0Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.0125240000.8290.7441902.05751060000.8250.685184 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL VDL4351501CBL VDL13003248CET GR24913184CST GR17082550CST GR25523315CST GR25533315DIL LSS GR SP15012548DITE LSS MSFL GR SP25333320DLL SP26003000LDL CNL NGT25333321MWD - GR RES DIR3612520MWD - GR RES DIR30253305RFT GR26982884RFT GR27012925RFT GR28163093SHDT GR15012550SHDT GR25333320VSP10803260 -
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 formasjonstestCONDUCTOR30445.036446.00.00LOTINTERM.13 3/8757.017 1/21517.01.76LOTINTERM.9 5/82535.012 1/42550.01.87LOTLINER73316.08 1/23320.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling3821.0599.099.0WATERBASED20.11.19864061.0599.099.0WATERBASED21.11.19864461.05WATERBASED24.11.19866500.00WATERBASED19.01.19877801.05WATERBASED24.11.19867800.0018.010.0WATERBASED26.11.198610001.4711.012.0WATER BASED22.03.199011601.2024.018.0WATERBASED25.11.198615171.3020.013.0WATERBASED27.11.198615170.0020.015.0WATERBASED30.11.198615170.0022.09.0WATERBASED30.11.198618391.6030.015.0WATERBASED30.11.198620161.6033.010.0WATER BASED02.12.198621901.6028.08.0WATER BASED02.12.198622301.6028.08.0WATERBASED03.12.198623101.6030.010.0WATERBASED04.12.198623721.4819.011.0WATER BASED22.03.199024091.6025.07.0WATERBASED06.12.198624641.4719.010.0WATER BASED22.03.199025131.6027.09.0WATERBASED06.12.198625351.4920.04.0WATERBASED10.12.198625350.0021.05.0WATERBASED11.12.198625501.6025.08.0WATERBASED06.12.198625500.0029.09.0WATERBASED09.12.198625500.0029.09.0WATERBASED08.12.198625531.4817.08.0WATERBASED14.12.198625821.4820.08.0WATERBASED14.12.198626511.4824.08.0WATERBASED14.12.198626801.4821.08.0WATERBASED15.12.198627011.4821.08.0WATERBASED16.12.198627311.4819.07.0WATERBASED17.12.198627751.4822.08.0WATERBASED18.12.198627941.4811.07.0WATER BASED22.03.199027961.4820.06.0WATERBASED19.01.198728051.4823.08.0WATERBASED20.12.198628191.4824.08.0WATERBASED14.01.198728190.0020.06.0WATERBASED19.01.198728190.0020.06.0WATERBASED15.01.198728190.0020.06.0WATERBASED16.01.198728421.4822.08.0WATERBASED20.12.198628591.4823.08.0WATERBASED13.01.198728611.4819.07.0WATERBASED12.01.198728791.4823.07.0WATERBASED20.12.198629151.4824.08.0WATERBASED23.12.198629701.4818.011.0WATER BASED22.03.199029941.4825.09.0WATERBASED29.12.198630281.4823.08.0WATERBASED30.12.198630391.4823.08.0WATERBASED30.12.198630781.4823.08.0WATERBASED30.12.198631821.4824.09.0WATERBASED30.12.198632651.4822.07.0WATERBASED06.01.198732650.0022.07.0WATERBASED06.01.198732650.0022.07.0WATERBASED07.01.198732650.0021.05.0WATERBASED09.01.198732650.0023.06.0WATERBASED12.01.198732650.0018.06.0WATERBASED12.01.198732651.4817.012.0WATER BASED22.03.199032651.4817.016.0WATER BASED22.03.199032651.4818.015.0WATER BASED23.03.199032651.4817.014.0WATER BASED26.03.199032651.4717.014.0WATER BASED26.03.199032651.4714.013.0WATER BASED27.03.199032651.4714.012.0WATER BASED28.03.199032651.4715.014.0WATER BASED02.04.199032651.4815.013.0WATER BASED02.04.199032651.4815.013.0WATER BASED02.04.199032651.4815.013.0WATER BASED04.04.199032651.4815.013.0WATER BASED04.04.199032651.4715.012.0WATER BASED06.04.199032651.4815.013.0WATER BASED09.04.199032651.4815.013.0WATER BASED09.04.199032651.4815.013.0WATER BASED10.04.199032651.4815.013.0WATER BASED11.04.199032651.4815.013.0WATER BASED18.04.199032651.4815.012.0WATER BASED18.04.199032651.4814.09.0WATER BASED18.04.199032651.4715.014.0WATER BASED18.04.199032651.021.01.0WATER BASED18.04.199032651.4715.014.0WATER BASED24.04.199032651.4715.014.0WATER BASED24.04.199032651.4715.014.0WATER BASED24.04.199032651.4715.014.0WATER BASED24.04.199032651.4713.013.0WATER BASED27.04.199032651.4513.012.0WATER BASED27.04.199032651.4812.012.0WATER BASED30.03.199032651.4815.017.0WATER BASED30.03.199032651.4815.013.0WATER BASED05.04.199032651.4815.013.0WATER BASED09.04.199032651.4715.014.0WATER BASED18.04.199032651.4715.014.0WATER BASED25.04.199032650.0022.07.0WATERBASED09.01.198732661.4925.06.0WATERBASED05.01.198732761.4824.010.0WATERBASED30.12.198633200.0024.06.0WATERBASED05.01.198733201.4823.08.0WATERBASED30.12.198633200.0023.08.0WATERBASED02.01.198733200.0024.08.0WATERBASED02.01.1987 -
Tynnslip i Sokkeldirektoratet
Tynnslip i Sokkeldirektoratet DybdeEnhet2701.60[m ]2710.90[m ]2806.90[m ]2811.60[m ]2842.60[m ]2853.60[m ]2868.30[m ]2895.40[m ]2911.90[m ] -
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]pdf0.28