7120/10-2
Eksport: PDF
-
Generell informasjon
-
Brønnhistorie
GeneralBlock 7120/10 is situated on the southwest margin of the Hammerfest Basin with the Tromsø Basin to the west, and the Troms-Finnmark Platform to the south. Well 7120/10-2 was designed to drill Valanginian submarine fan sandstones, where the hydrocarbon trap is formed by up dip sand pinch out to the south and west combined with structural dip to the northeast. The reservoir was prognosed to be penetrated at 2080 m sub sea. The source kitchen for the prospect was expected to be the Hekkingen Formation of Late Jurassic, which is good to rich source rocks and contains oil prone kerogen. Surface to 214 m subsea could contain boulders and thus cause drilling problems.Operations and resultsWildcat well 7120/10-2 was spudded with the semi-submersible installation Byford Dolphin on 20 July 1990 and drilled to TD at 2500 m in the Late Jurassic Hekkingen Formation. Three incidents delayed the drilling for a total of 13.5 days: 1) A boulder bed in the 36" section made it necessary to make a trip to change the BHA. The old hole could not be located on this wiper trip so the string was pulled to re-spud; 2) A wellhead connector leak needed to be diagnosed and repaired; 3) Logs hung up at ledges formed when the shale/ claystone was washed out while resistant limestone were not. As a consequence of the latter no wire line logs were obtained over the interval 2106 m to 1935 m. This interval comprises predominantly shale but does include two sandstone beds (2052 m to 2059 m and 2036 m to 2038 m). The well was drilled with seawater down to 523 m and with lignosulphonate/seawater/gel from 523 m to TD.The well penetrated the primary objective, Valanginian sandstones, at 2125 m within the Knurr Formation. These reservoir quality rocks comprised of sandstones with minor interbedded siltstones and shales for a thickness of 178 m down to the contact with the Late Jurassic Hekkingen Shale at 2303 m. These reservoir sands all proved water wet. The well penetrated 197 m of Late Jurassic source rock of variable richness. No truly "hot" shale was penetrated, although the Hekkingen Formation did contain organic rich material and showed a significant gas increase with moderately bright cut and crush cut fluorescence throughout. One core was cut in the interval from 2127 to 2136 m. The core was cut close to the top of the sand-prone section. No fluid sample was taken.The well was permanently abandoned as a dry hole on 5 September 1990.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]540.002500.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12127.02135.6[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]8.6Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
-
Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie551.0[m]SWC560.0[m]DC584.0[m]SWC630.0[m]DC647.0[m]SWCESSO670.0[m]DC698.0[m]SWC708.0[m]SWCESSO728.0[m]SWCESSO754.0[m]SWCESSO758.0[m]SWCESSO797.0[m]SWCESSO824.0[m]SWCESSO854.0[m]SWCESSO864.0[m]SWCESSO891.0[m]SWCESSO918.0[m]SWCESSO941.0[m]SWCESSO970.0[m]DC1000.0[m]SWCESSO1020.0[m]DC1047.0[m]SWCESSO1088.0[m]SWCESSO1126.0[m]SWCESSO1175.0[m]SWCESSO1191.0[m]SWCESSO1217.0[m]SWCESSO1240.0[m]DC1268.0[m]SWCESSO1286.0[m]SWCESSO1320.0[m]DC1340.0[m]DC1365.0[m]DC1390.0[m]DC1415.0[m]DC1440.0[m]DC1465.0[m]DC1490.0[m]DC1515.0[m]DC1540.0[m]DC1565.0[m]DC1590.0[m]DC1615.0[m]DC1640.0[m]DC1665.0[m]DC1690.0[m]DC1715.0[m]DC1740.0[m]DC1748.0[m]DC1765.0[m]DC1790.0[m]DC1815.0[m]DC1840.0[m]DC1865.0[m]DC1865.0[m]DC1890.0[m]DC1915.0[m]DC1940.0[m]DC1965.0[m]DC1990.0[m]DC2015.0[m]DC2040.0[m]DC2045.0[m]DC2065.0[m]DC2090.0[m]DC2100.0[m]DC2115.0[m]DC2120.0[m]DC2128.5[m]CESSO2130.6[m]CESSO2132.1[m]CESSO2134.0[m]CESSO2135.0[m]CESSO2135.4[m]CESSO2140.0[m]DC2165.0[m]DC2190.0[m]DC2205.0[m]DC2215.0[m]DC2240.0[m]DC2265.0[m]DC2290.0[m]DC2290.0[m]DC2310.0[m]DC2315.0[m]DC2320.0[m]DC2340.0[m]DC2365.0[m]DC2375.0[m]DC2395.0[m]DC2415.0[m]DC2420.0[m]DC2425.0[m]DC2430.0[m]DC2450.0[m]DC2475.0[m]DC2500.0[m]DC -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet211468468647647703703144219222303 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.34 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.19pdf0.16 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf1.25pdf41.58 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL VDL GR6851321DIL GR CAL SP FGT CNL21062493DIL GR LSS SP CAL5211313DIL GR LSS SP CAL13121878DIL GR LSS SP CAL18371935LDL CNL GR CAL13121878LDL CNL GR CAL18371935MWD2492500SWC5511286VELOCITY3751930 -
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 formasjonstestCONDUCTOR30248.036250.00.00LOTINTERM.13 3/8523.017 1/2533.01.86LOTINTERM.9 5/81311.012 1/41321.01.85LOTOPEN HOLE2500.08 1/22500.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling2241.031.0WATER BASED23.07.19902491.031.0WATER BASED25.07.19902491.031.0WATER BASED23.07.19902491.031.0WATER BASED24.07.19902491.00WATER BASED23.07.19905361.031.0WATER BASED26.07.19905361.0713.03.4WATER BASED30.07.19905361.03WATER BASED30.07.19905361.077.05.3WATER BASED30.07.19906851.085.05.7WATER BASED31.07.199010141.138.06.7WATER BASED01.08.199011901.2515.00.5WATER BASED03.09.199013001.2515.01.9WATER BASED03.09.199013211.157.08.1WATER BASED03.08.199013211.2112.06.7WATER BASED09.08.199013211.2112.06.7WATER BASED13.08.199013211.2112.06.7WATER BASED14.08.199013211.157.08.1WATER BASED02.08.199013211.1510.09.1WATER BASED06.08.199013211.167.08.1WATER BASED06.08.199013211.169.07.7WATER BASED06.08.199013211.2112.06.7WATER BASED10.08.199013211.2112.06.7WATER BASED13.08.199014541.1710.07.7WATER BASED15.08.199016701.1811.09.6WATER BASED15.08.199018651.1610.07.7WATER BASED16.08.199018861.1810.06.7WATER BASED17.08.199020761.2314.07.7WATER BASED21.08.199020861.2312.08.6WATER BASED21.08.199021271.2312.07.7WATER BASED21.08.199021361.2311.07.2WATER BASED21.08.199021951.2315.07.2WATER BASED22.08.199025001.2012.07.2WATER BASED27.08.199025001.2617.08.1WATER BASED27.08.199025001.2615.06.7WATER BASED27.08.199025001.2613.06.7WATER BASED28.08.199025001.2615.06.7WATER BASED29.08.199025001.2611.05.3WATER BASED30.08.199025001.2712.04.8WATER BASED31.08.199025001.2614.04.8WATER BASED03.09.1990 -
Tynnslip i Sokkeldirektoratet
Tynnslip i Sokkeldirektoratet DybdeEnhet2127.55[m ]2129.50[m ]2134.92[m ]