31/6-6
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Generell informasjon
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Brønnhistorie
GeneralWell 31/6-6 was drilled in the Troll East gas province. It was designed to test possible gas accumulations in the Late to Middle Jurassic sandstones and to test the quality of a reservoir siltstone in the Heather Formation.Operations and resultsWell 31/6-6 was spudded with the semi-submersible installation Deepsea Bergen on 22 May 1984 and drilled to TD 2293 m in the Late Triassic Hegre Group. No significant problem was encountered in the operations. The well was drilled with spud mud down to 716 m, with KCl/polymer mud from 716 m to 1771.5 m, and with pre-hydrated bentonite/CMC mud from 1771.5 m to TD.The well encountered gas from top Heather reservoir at 1516 m to a GWC at 1568.5 m, 7.5 m into the Sognefjord Formation. No oil shows were reported from the well. Nine conventional cores were cut in the interval 1525 m to 1771.5 m in the Middle to Late Jurassic. FMT samples were taken at 1571.8 m and 1576.5 m in the Sognefjord Formation. Both contained formation water and mud filtrate.The well was completed on 29 July 1984 as a gas appraisal.TestingTwo drill stem tests were performed in the well. DST 1A tested 1562 m to 1567.5 m in the Sognefjord Formation sandstone. It produced maximum 779 x 10 Sm3 gas /day on a 64/64" choke. DST 2 from 1523 m to 1536 m in the Heather Formation siltstone showed a very low production rate, 10.7 x 10 Sm3/day. The reservoir temperature was 62.5 deg. C in DST 1A and 58 deg. C in DST 2. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]440.002290.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet11525.01544.9[m ]21552.01575.9[m ]31579.51607.4[m ]41607.01633.5[m ]51634.51662.3[m ]61662.31689.4[m ]71689.41716.4[m ]81716.41744.6[m ]91744.61772.6[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]236.2Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie837.0[m]SWCLAP1015.0[m]SWCLAP1242.0[m]SWCLAP1395.0[m]SWCLAP1410.0[m]SWCLAP1425.0[m]SWCLAP1447.0[m]SWCSTAT1450.0[m]SWCLAP1455.0[m]SWCSTATO1460.0[m]SWCSTATO1471.0[m]SWCLAP1481.0[m]SWCSTATO1485.5[m]SWCSTATO1495.0[m]SWCSTATO1498.5[m]SWCLAP1505.5[m]SWCSTATO1510.0[m]SWCLAP1513.0[m]SWCSTATO1516.0[m]SWCSTAT1522.0[m]SWCSTATO1525.1[m]COD1526.5[m]COD1529.5[m]COD1532.8[m]COD1536.0[m]COD1537.7[m]COD1544.0[m]COD1547.0[m]SWCLAP1547.0[m]SWCSTAT1552.0[m]COD1552.1[m]COD1555.6[m]COD1556.5[m]COD1558.5[m]COD1560.5[m]COD1561.7[m]COD1562.2[m]COD1562.5[m]COD1562.9[m]COD1563.5[m]COD1564.0[m]COD1566.1[m]COD1567.5[m]COD1571.1[m]COD1572.8[m]COD1575.9[m]COD1577.0[m]SWCLAP1577.0[m]SWCSTAT1579.5[m]COD1580.0[m]COD1582.6[m]COD1583.1[m]COD1585.0[m]COD1585.6[m]COD1589.6[m]COD1591.2[m]COD1595.6[m]COD1596.1[m]COD1596.5[m]COD1602.5[m]COD1604.5[m]COD1605.5[m]COD1607.0[m]COD1607.5[m]COD1612.4[m]COD1613.2[m]COD1613.3[m]COD1615.5[m]COD1618.3[m]COD1620.1[m]COD1621.7[m]COD1624.0[m]COD1624.5[m]COD1624.6[m]COD1627.0[m]COD1631.4[m]COD1636.0[m]COD1636.5[m]COD1643.6[m]COD1644.5[m]COD1647.1[m]COD1650.5[m]COD1654.5[m]COD1654.6[m]COD1655.0[m]COD1658.8[m]COD1658.9[m]COD1662.9[m]COD1669.3[m]COD1669.5[m]COD1672.6[m]COD1672.8[m]COD1675.4[m]COD1680.2[m]COD1684.5[m]COD1687.8[m]COD1694.9[m]COD1698.0[m]COD1706.4[m]COD1707.6[m]COD1711.0[m]COD1713.8[m]COD1718.4[m]COD1725.4[m]COD1727.4[m]COD1734.4[m]COD1735.4[m]COD1738.0[m]COD1741.4[m]COD1745.8[m]COD1753.7[m]COD1754.0[m]COD1762.9[m]COD1763.6[m]COD1767.8[m]COD1768.6[m]COD1775.0[m]SWCLAP1780.0[m]SWCSTAT1795.0[m]SWCSTAT1805.0[m]SWCSTAT1810.0[m]SWCLAP1820.0[m]SWCSTAT1835.0[m]SWCSTAT1840.0[m]SWCLAP1850.0[m]SWCSTAT1860.0[m]SWCSTAT1870.0[m]SWCLAP1880.0[m]SWCSTAT1890.0[m]SWCSTAT1900.0[m]SWCSTAT1900.0[m]SWCLAP1910.0[m]SWCSTAT1925.0[m]SWCSTAT1935.0[m]SWCLAP1995.0[m]SWCLAP2020.0[m]SWCLAP2035.0[m]SWCLAP2056.0[m]SWCLAP2111.8[m]SWCLAP2134.2[m]SWCLAP2184.0[m]SWCLAP2221.9[m]SWCLAP2241.0[m]SWCLAP -
Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligDSTDST1A0.000.0015.07.1984 - 00:00YESPRODTEST1A0.000.00CONDENSATE15.07.1984 - 03:00YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet336531650650798949101810181025120412041340139213921515156117061719194719762008204520452122219322252277 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.36 -
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]pdf0.24pdf0.25 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf23.66pdf8.01pdf0.39pdf3.77pdf0.34pdf1.14pdf3.82pdf0.16pdf6.33pdf12.62pdf11.08pdf13.55pdf5.05pdf1.33pdf55.71 -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.01563156725.42.01520153312.5Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.0622.044.00011.00062Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.077902.0107 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]ACBL VDL GR3331440ACBL VDL GR11001750CDL CNL GR CAL14392286CDL GR CAL6951455DIFL BHC AC GR SP CAL3302286DIPLOG14432286DLL MLL GR14391768FMT15231601VELOCITY5102275 -
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 formasjonstestCONDUCTOR30423.036425.00.00LOTSURF.COND.20699.026723.01.53LOTINTERM.13 3/81443.017 1/21460.01.55LOTINTERM.9 5/81755.012 1/41771.51.49LOTOPEN HOLE2290.08 1/22290.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling3361.03120.0WATER BASED24.05.19844171.03120.0WATER BASED24.05.19844251.03120.0WATER BASED24.05.19844251.03120.0WATER BASED25.05.19844301.0346.0WATER BASED28.05.19847231.0640.0WATER BASED28.05.19847261.2239.0WATER BASED01.06.19848211.2244.0WATER BASED01.06.198410991.2346.0WATER BASED04.06.198412531.2346.0WATER BASED04.06.198413721.2348.019.0WATER BASED04.06.198414601.2350.019.0WATER BASED05.06.198414601.2351.018.0WATER BASED06.06.198414601.2354.018.0WATER BASED07.06.198414601.2352.019.0WATER BASED08.06.198414601.2350.018.0WATER BASED12.06.198414601.2350.019.0WATER BASED05.06.198414601.2351.018.0WATER BASED06.06.198414601.2354.018.0WATER BASED07.06.198414601.2352.019.0WATER BASED08.06.198414601.2350.018.0WATER BASED12.06.198415251.2149.020.0WATER BASED12.06.198415521.2152.017.0WATER BASED12.06.198415861.2151.017.0WATER BASED12.06.198416271.2152.016.0WATER BASED13.06.198416661.2149.017.0WATER BASED14.06.198417121.2149.017.0WATER BASED15.06.198417461.2149.09.0WATER BASED18.06.198417551.1053.07.0WATER BASED20.06.198417721.2149.08.0WATER BASED18.06.198418971.1049.08.0WATER BASED20.06.198421051.1050.07.0WATER BASED22.06.198422291.1048.013.0WATER BASED22.06.198422901.1043.012.0WATER BASED25.06.198422901.1041.011.0WATER BASED25.06.1984 -
Tynnslip i Sokkeldirektoratet
Tynnslip i Sokkeldirektoratet DybdeEnhet0.00[m ]1637.00[m ]1568.00[m ]1517.50[m ]1513.80[m ]1505.60[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