7321/9-1
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Generell informasjon
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Brønnhistorie
GeneralWell 7321/9-1 was drilled on a rotated fault block on the southern margin of the Fingerdjupet Sub-basin in the Bjørnøya East area. The main objective was to test the hydrocarbon potential of the structure, with Late Triassic to Middle Jurassic sandstones as primary target horizon with Early Cretaceous and Triassic (Snadd Formation) sandstones as secondary targets. The wildcat well should also gather as much geological information as possible regarding reservoir, source and cap rock intervals. The well was positioned so that it should avoid faults that could disturb the seismic tie and at the same time would leave a minimum of untested potential up-dip from the well location.Operations and resultsWildcat well 7321/9-1 was spudded with the semi-submersible rig Ross Rig 25 October 1988 and drilled to TD at 1800 m in the Late Triassic Snadd Formation. Drilling proceeded to TD without any significant problems, but on the way out of the hole the string got stuck at 1501 m. After several unsuccessful attempts, the string was shot off at 1377 m. As a result of this, and because LWD logs were run only to 1507 m (Baroid "Recorded Lithology Logging" -tool, RLL), the hole below 1507 m was not logged. There were also mechanical problems during plugging. In total as much as 40% of the rig time was thus classified as down time. The well was drilled with seawater and hi-vis sweeps down to 680 m and with KCl / polymer mud from 680 m to TD. There was no shallow gas in the hole.The secondary target, a prognosed sandstone above the Barremian unconformity, was not developed. Instead of a reservoir sandstone a new possible source rock with high organic content was encountered in the Barremian interval from 961 m to 986 m. The primary target reservoir interval (Stø, Nordmela and Fruholmen Formations) was penetrated at 1378.8 m. Approx. 116 m of reservoir rock was found with 35.8 m net sand. The reservoirs were water bearing with only weak indications of hydrocarbons. The prognosed Triassic target in the Snadd Formation did not contain hydrocarbon shows nor significant gas. On this basis it was interpreted as water bearing.Shows were recorded on cuttings from claystones in several intervals from 920 m down to 1500 m. Shows were also recorded in sandstones in the cores in the interval 1373 m to 1398 m and on cuttings from the interval 1730 m to 1750 m.Two cores were cut in the interval 1365 - 1398.2 m, through lower part of the Hekkingen Formation, throughout the Fuglen Formation and most of the Stø Formation. Nineteen attempts of RFT pressure testing were done with only one good measurement at 1359 m. The formation pressure here was measured to be 0.83 SG. No fluid samples were taken. From approximately 1000 m to 670 m the quality of the MSFL and sonic logs was bad due to severe washout of the hole.The well was permanently abandoned on 28 November 1988 as dry with minor shows in the Cretaceous and Jurassic.TestingNo drill stem test was performed -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]690.001800.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet11365.01384.1[m ]21385.21398.2[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]32.1Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie547.0[m]SWCHYDRO552.0[m]SWCHYDRO557.0[m]SWCHYDRO560.0[m]SWCHYDRO563.0[m]SWCHYDRO566.0[m]SWCHYDRO590.0[m]SWCHYDRO608.0[m]SWCHYDRO632.0[m]SWCHYDRO650.0[m]SWCHYDRO674.0[m]SWCHYDRO690.0[m]SWCHYDRO710.0[m]SWCHYDRO730.0[m]DCGEAR752.0[m]SWCHYDRO770.0[m]DCGEAR800.0[m]SWCHYDRO830.0[m]DCGEAR850.0[m]SWCHYDRO860.0[m]SWCHYDRO870.0[m]SWCHYDRO880.0[m]DCGEAR890.0[m]SWCHYDRO900.0[m]SWCHYDRO900.0[m]DCGEAR920.0[m]DCGEAR925.0[m]SWCHYDRO940.0[m]DCGEAR950.0[m]SWCHYDRO955.0[m]SWCHYDRO960.0[m]SWCHYDRO960.0[m]DCGEAR962.5[m]SWCHYDRO965.0[m]SWCHYDRO967.0[m]SWCHYDRO970.0[m]SWCHYDRO974.0[m]SWCHYDRO975.5[m]SWCHYDRO977.0[m]SWCHYDRO979.0[m]SWCHYDRO980.0[m]DCGEARHART982.0[m]SWCHYDRO984.0[m]SWCHYDRO985.0[m]SWCHYDRO987.0[m]SWCHYDRO990.0[m]SWCHYDRO995.0[m]SWCHYDRO1000.0[m]DCGEARHART1000.0[m]SWCHYDRO1020.0[m]DCGEARHART1040.0[m]DCGEARHA1050.0[m]SWCHYDRO1060.0[m]DCGEARHART1080.0[m]DCGEARHA1100.0[m]DCGEARHA1120.0[m]DCGEARHA1140.0[m]DCGEARHA1150.0[m]SWCHYDRO1160.0[m]DCGEARHART1180.0[m]DCGEARHA1200.0[m]DCGEARHA1200.0[m]SWCHYDRO1220.0[m]DCGEARHART1240.0[m]DCGEARHA1250.0[m]SWCHYDRO1260.0[m]DCGEARHART1280.0[m]DCGEARHA1290.0[m]SWCHYDRO1300.0[m]SWCHYDRO1300.0[m]DCGEARHART1302.5[m]SWCHYDRO1307.0[m]SWCHYDRO1308.0[m]SWCHYDRO1311.0[m]SWCHYDRO1312.0[m]DCGEARHART1313.0[m]SWCHYDRO1315.0[m]SWCHYDRO1316.0[m]SWCHYDRO1320.0[m]SWCHYDRO1320.0[m]DCGEARHART1322.0[m]SWCHYDRO1325.0[m]DCGEARHART1325.0[m]SWCHYDRO1328.0[m]SWCHYDRO1330.0[m]SWCHYDRO1335.0[m]DCGEARHART1336.0[m]SWCHYDRO1339.0[m]SWCHYDRO1344.0[m]SWCHYDRO1345.0[m]DCGEARHART1347.5[m]SWCHYDRO1350.0[m]SWCHYDRO1355.0[m]DCGEARHART1355.0[m]SWCHYDRO1360.0[m]SWCHYDRO1362.0[m]SWCHYDRO1365.0[m]DCGEARHART1367.9[m]COD1375.0[m]DCGEARHART1377.5[m]COD1378.8[m]CICHRON1379.6[m]COD1381.6[m]COD1382.5[m]CICHRON1385.0[m]DCGEARHART1390.8[m]COD1391.7[m]CICHRON1395.0[m]DCGEARHART1395.7[m]COD1398.0[m]COD1405.0[m]DCGEARHART1415.0[m]DCGEARHA1425.0[m]DCGEARHA1435.0[m]DCGEARHA1445.0[m]DCGEARHA1455.0[m]DCGEARHA1465.0[m]DCGEARHA1475.0[m]DCGEARHA1485.0[m]DCGEARHA1495.0[m]DCGEARHA1505.0[m]DCGEARHA1515.0[m]DCGEARHA1525.0[m]DCGEARHA1535.0[m]DCGEARHA1545.0[m]DCGEARHA1557.0[m]DCGEARHA1567.0[m]DCGEARHA1587.0[m]DCGEARHA1600.0[m]DCGEARHA1610.0[m]DCGEARHA1620.0[m]DCGEARHA1630.0[m]DCGEARHA1640.0[m]DCGEARHA1650.0[m]DCGEARHA1660.0[m]DCGEARHA1670.0[m]DCGEARHA1680.0[m]DCGEARHA1690.0[m]DCGEARHA1700.0[m]DCGEARHA1710.0[m]DCGEARHA1720.0[m]DCGEARHA1730.0[m]DCGEARHA1740.0[m]DCGEARHA1750.0[m]DCGEARHA1760.0[m]DCGEARHA1770.0[m]DCGEARHA1780.0[m]DCGEARHA1792.0[m]DCGEARHA1797.0[m]DCGEARHA -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet4835585588929861317136713791379141714241572 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.18 -
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]pdf0.21pdf0.15 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf11.59 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CST547677CST6901362DIL LSS SP GR MSFL5401371LDL CNL NGL CAL GR6581371MWD - GR RES DIR5471362MWD - RLL13511506MWD - RLL EWR13511496RFT9371365SHDT6631366VSP4831365 -
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 formasjonstestCONDUCTOR30543.036546.00.00LOTINTERM.13 3/8668.017 1/2680.01.38LOTOPEN HOLE1800.012 1/41800.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling5001.1415.07.0WATER BASED29.11.19885291.05WATER BASED31.10.19885461.05WATER BASED31.10.19885621.05WATER BASED31.10.19886221.1415.07.0WATER BASED24.11.19886801.05WATER BASED01.11.19886801.05WATER BASED02.11.19886801.05WATER BASED31.10.19886801.0813.06.0WATER BASED03.11.198810081.1414.07.0WATER BASED04.11.198812131.1416.07.0WATER BASED07.11.198813301.1416.07.0WATER BASED07.11.198813651.1416.07.0WATER BASED07.11.198813871.1417.010.0WATER BASED10.11.198813981.1417.09.0WATER BASED11.11.198814271.1417.07.0WATER BASED14.11.198815501.1416.011.0WATER BASED15.11.198817231.1418.08.0WATER BASED15.11.198818001.1418.08.0WATER BASED18.11.198818001.1418.08.0WATER BASED15.11.198818001.1417.08.0WATER BASED15.11.198818001.1418.08.0WATER BASED16.11.198818001.1416.07.0WATER BASED21.11.198818001.1115.07.0WATER BASED21.11.198818001.1115.07.0WATER BASED22.11.1988 -
Tynnslip i Sokkeldirektoratet
Tynnslip i Sokkeldirektoratet DybdeEnhet1379.50[m ]1380.75[m ]1388.50[m ]1397.75[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]PDF0.22