7121/5-2
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Generell informasjon
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Brønnhistorie
GeneralWell 7121/5-2 is located ca 10 km northeast of the Snøhvit Field. The purpose of the well was to test the hydrocarbon accumulation on the Beta-structure in sandstones of the Early to Middle Jurassic Stø-formation.Operations and resultsThe well was spudded with the semi-submersible installation Ross Isle on 26 May 1986 and drilled to TD at 2543 m in Late Triassic sediments (Rhaetian age). The well was drilled with seawater and hi-vis pills down to 850 m, with gypsum/polymer mud from 850 m to 1977 m, and with gypsum/polymer/NaCl mud from 1977 m to TD.Hydrocarbon bearing Middle Jurassic sandstones in the Stø Formation were encountered at 2323 m. The gas-bearing zone extends from 2323 m to 2346 m. The gas zone is sealed from the underlying oil zone by a 6 m thick dense shale layer, which prevents the exact location of a gas/oil contact. The oil-bearing zone extends from 2352 m 2358.5 m. The oil water contact at 2358.5 m was picked both from logs and core data. Three cores were cut in the Stø formation (2324 m to 2400 m). A total of 9 FMT runs were performed; two to obtain pressure points and 7 to obtain segregated samples. The first run resulted in 32 pre test pressure points out of 38 attempts, in the interval 2323.5 m to 2369.0 m. Eighteen points were taken in the gas zone, 6 in the tight zone, 4 in the oil zone and 4 were in the water zone. The second run resulted in 9 pre test pressure points of nine attempts in the interval 2358 m to 2361 m. Seven attempts to obtain segregated samples resulted in 5 good samples, two at 2355 m, one at 2326 m, and two at 2353.5 m.The well was permanently abandoned on 6 June 1986 as an oil and gas discovery.TestingDue to the presence of hydrogen sulphide in the well, no tests were performed. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]460.002539.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12324.02342.8[m ]22343.02371.0[m ]32371.02399.0[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]74.8Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie1504.0[m]DCGEARHA1516.0[m]DCGEARHA1534.0[m]DCGEARHA1540.0[m]DCGEARHA1552.0[m]DCGEARHA1564.0[m]DCGEARHA1576.0[m]DCGEARHA1588.0[m]DCGEARHA1600.0[m]DCGEARHA1612.0[m]DCGEARHA1624.0[m]DCGEARHA1636.0[m]DCGEARHA1648.0[m]DCGEARHA1660.0[m]DCGEARHA1672.0[m]DCGEARHA1684.0[m]DCGEARHA1696.0[m]DCGEARHA1708.0[m]DCGEARHA1720.0[m]DCGEARHA1735.0[m]DCGEARHA1744.0[m]DCGEARHA1756.0[m]DCGEARHA1768.0[m]DCGEARHA1780.0[m]DCGEARHA1792.0[m]DCGEARHA1804.0[m]DCGEARHA1816.0[m]DCGEARHA1828.0[m]DCGEARHA1840.0[m]DCGEARHA1852.0[m]DCGEARHA1864.0[m]DCGEARHA1876.0[m]DCGEARHA1888.0[m]DCGEARHA1900.0[m]DCGEARHA1912.0[m]DCGEARHA1924.0[m]DCGEARHA1927.5[m]SWCGEARHA1936.0[m]DCGEARHA1951.0[m]DCGEARHA1963.0[m]DCGEARHA1972.0[m]DCGEARHA1982.0[m]SWCSTATOIL1984.0[m]DCGEARHA1996.0[m]DCGEARHA2008.0[m]DCGEARHA2020.0[m]DCGEARHA2032.0[m]DCGEARHA2044.0[m]DCGEARHA2054.0[m]SWCSTATOIL2056.0[m]DCGEARHA2062.0[m]SWCGEARHA2062.0[m]SWCSTATOIL2068.0[m]DCGEARHA2080.0[m]DCGEARHA2080.0[m]SWCSTATOIL2092.0[m]DCGEARHA2104.0[m]DCGEARHA2116.0[m]DCGEARHA2121.0[m]SWCSTATOIL2128.0[m]DCGEARHA2140.0[m]DCGEARHA2152.0[m]DCGEARHA2164.0[m]DCGEARHA2168.0[m]SWCGEARHA2168.0[m]SWCSTATOIL2175.0[m]SWCGEARHA2176.0[m]DCGEARHA2178.0[m]SWCGEARHA2178.0[m]DCSTATOIL2184.0[m]SWCGEARHA2187.0[m]SWCGEARHA2187.0[m]SWCSTATOIL2188.0[m]DCGEARHA2195.0[m]SWCGEARHA2200.0[m]DCGEARHA2207.0[m]SWCGEARHA2207.0[m]SWCSTATOIL2212.0[m]DCGEARHA2220.5[m]SWCSTATOIL2224.0[m]DCGEARHA2236.0[m]DCGEARHA2248.0[m]DCGEARHA2249.0[m]SWCGEARHA2260.0[m]DCGEARHA2264.5[m]SWCGEARHA2272.0[m]DCGEARHA2284.0[m]DCGEARHA2286.0[m]SWCGEARHA2296.0[m]DCGEARHA2303.0[m]SWCGEARHA2308.0[m]DCGEARHA2312.5[m]SWCGEARHA2320.0[m]DCGEARHA2321.0[m]SWCGEARHA2324.5[m]CGEARHA2328.6[m]CGEARHA2332.0[m]DCGEARHA2339.9[m]CGEARHA2344.0[m]DCGEARHA2344.0[m]DCGEARHA2344.8[m]CGEARHA2350.4[m]CGEARHA2356.0[m]DCGEARHA2363.0[m]CGEARHA2368.0[m]DCGEARHA2375.1[m]CGEARHA2380.0[m]DCGEARHA2382.7[m]CGEARHA2397.0[m]CGEARHA2398.7[m]CGEARHA2404.0[m]DCGEARHA2416.0[m]DCGEARHA2425.0[m]DCGEARHA2432.0[m]SWCGEARHA2440.0[m]DCGEARHA2446.0[m]DCGEARHA2449.0[m]SWCGEARHA2452.0[m]DCGEARHA2460.0[m]SWCGEARHA2461.0[m]DCGEARHA2475.0[m]DCGEARHA2480.0[m]DCGEARHA2488.0[m]DCGEARHA2500.0[m]DCGEARHA2503.5[m]SWCGEARHA2512.0[m]DCGEARHA2519.0[m]SWCGEARHA2524.0[m]DCGEARHA2528.0[m]DCGEARHA2534.0[m]SWCGEARHA2539.0[m]DCGEARHA -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet350449449934934977977182020792260230523232323240024502503 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.33 -
Geokjemisk informasjon
Geokjemisk informasjon Dokument navnDokument formatDokumentstørrelse [MB]pdf2.43 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.21pdf0.22 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf21.23 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]BHC AC CDL VDL GR3441898CDL CNL GR18972544CDL GR8291939COREGUN19272540DIFL BHC AC CDL GR SP CAL8291958DIFL BHC AC GR SP CAL18972644DLL MLL GR22932544FMT23232369FMT23282355HR DIP18972540MWD - GR RES4991035RLL - GR RES23002550 -
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 formasjonstestCONDUCTOR30449.036452.00.00LOTSURF.COND.20829.0261035.01.53LOTINTERM.13 3/81898.417 1/21977.01.48LOTOPEN HOLE2543.012 1/42543.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling3901.08WATER BASED26.05.19864531.08WATER BASED26.05.19864530.00800.011.0WATERBASED05.06.19865241.10600.012.7WATER BASED05.06.19868481.10600.014.8WATER BASED05.06.198610351.10600.013.5WATER BASED05.06.198610350.00800.029.4WATERBASED05.06.198610351.081000.028.3WATER BASED05.06.198610351.102400.07.2WATER BASED08.06.198610351.08900.028.8WATER BASED05.06.198611691.102400.08.0WATER BASED08.06.198614151.132300.09.3WATER BASED09.06.198615801.142200.010.1WATER BASED11.06.198617541.152000.09.7WATER BASED12.06.198618741.162200.09.3WATER BASED15.06.198619770.002100.08.0WATERBASED15.06.198619771.302600.08.4WATER BASED15.06.198619771.162000.09.3WATERBASED15.06.198620601.302200.07.2WATERBASED17.06.198621351.281900.07.2WATERBASED18.06.198622171.261900.06.3WATER BASED19.06.198622931.251900.05.1WATERBASED23.06.198623241.282000.05.5WATERBASED23.06.198623631.271900.05.9WATER BASED23.06.198623991.271800.05.9WATER BASED23.06.198624311.271900.06.3WATER BASED24.06.198624701.262000.06.3WATER BASED25.06.198624841.262100.06.5WATER BASED30.06.198625071.262100.06.5WATER BASED26.06.198625071.262100.06.5WATER BASED30.06.198625431.262400.07.6WATERBASED30.06.198625431.262400.07.8WATER BASED30.06.198625431.262200.07.8WATER BASED30.06.1986 -
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