15/5-4
Eksport: PDF
-
Generell informasjon
-
Brønnhistorie
GeneralWell 15/5 4 was drilled on a structure that straddles the border between the U.K. and the Norwegian sector of the North Sea. Hydrocarbons were proven in the structure by three earlier wells drilled in the UK sector (U.K. 16/13a-3, 16/13a-4, and 16/13a-5). Well 16/13a-4 penetrated a gas cap at the top of the structure and an oil column down to base reservoir. The other two wells penetrated an oil zone and a water leg. The objective of well 15/5-4 was to assess the extension of hydrocarbon bearing Sele Formation sand towards the east into PL048. The well position was chosen for possible use as a producer in the event of a positive appraisal. Prognosed total depth was 2300 m.Operations and resultsAppraisal well 15/5-4 was spudded by the semi submersible installation Vildkat Explorer on 6 June 1991 and drilled to TD at 2300 m in rocks of the Paleocene Heimdal Formation. No shallow gas was observed on the predicted sand/gas levels. Drilling proceeded without any significant problems. The well was drilled with spud mud down to 1027 m and with KCl/polymer mud from 1027 m to TD.Thin sands of the Sele Formation were encountered at 2120 m and had good oil shows. The reservoir thickness was calculated to 7.5 m. The sandstones of the Heimdal Formation were penetrated below the oil/water contact and were totally water wet. Weak oil shows was described on sidewall cores from claystone at 1909 m in the Frigg Formation and sandstone at 2182 m in the Lista Formation.A total of six cores were cut from 2106 m to 2147 m over the reservoir section. RFT fluid samples were attempted at 2125.1 m, 2125.3 m, 2125.8 m, and 2129.5 m. Sampling suffered from sand plugging and only the samples from run 1C (2129.5 m) contained traces of oil.The well was permanently abandoned on 3 July 1991 as a well with oil shows.TestingOne DST test was performed over the interval 2123.4 to 2135.9 m in the Sele Formation. Water was produced, but not to surface. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]1040.002300.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12106.02124.8[m ]22124.02129.0[m ]32129.02132.0[m ]42132.02145.9[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]40.7Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
-
Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie1190.0[m]DCRRI1200.0[m]DCRRI1220.0[m]DCRRI1230.0[m]DCRRI1250.0[m]DCRRI1260.0[m]DCRRI1280.0[m]DCRRI1290.0[m]DCRRI1310.0[m]DCRRI1320.0[m]DCRRI1340.0[m]DCRRI1350.0[m]DCRRI1370.0[m]DCRRI1380.0[m]DCRRI1501.0[m]SWCNH1530.0[m]SWCNH1561.0[m]SWCNH1580.0[m]DCRRI1593.0[m]SWCNH1610.0[m]DCRRI1630.0[m]SWCNH1697.0[m]SWCNH1718.0[m]SWCNH1738.0[m]SWCNH1754.0[m]SWCNH1760.0[m]DCRRI1778.0[m]SWCNH1800.0[m]SWCNH1824.0[m]SWCNH1850.0[m]DCRRI1856.0[m]SWCNH1874.0[m]SWCNH1909.0[m]SWCNH1945.0[m]DCRRI1954.0[m]SWCNH1975.0[m]DCRRI1983.0[m]SWCNH2000.0[m]SWCNH2020.0[m]DCRRI2032.0[m]SWCNH2058.0[m]SWCNH2071.0[m]SWCNH2085.0[m]SWCNH2098.0[m]SWCNH2115.0[m]CRRI2120.0[m]CRRI2124.0[m]CRRI2129.0[m]CRRI2134.0[m]CRRI2136.0[m]CRRI2139.0[m]CRRI2145.0[m]CRRI2157.0[m]DCRRI2165.0[m]DCRRI2172.0[m]SWCNH2182.0[m]SWCNH2190.0[m]DCRRI2194.0[m]SWCNH2205.0[m]DCRRI2210.0[m]DCRRI2220.0[m]DCRRI2225.0[m]DCRRI2235.0[m]DCRRI2240.0[m]DCRRI2250.0[m]DCRRI2255.0[m]DCRRI2265.0[m]DCRRI2270.0[m]DCRRI2280.0[m]DCRRI2285.0[m]DCRRI2295.0[m]DCRRI2300.0[m]DCRRI -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet145782896158620722072212021732198 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.15 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf1.77pdf2.96 -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.02124213625.4Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.068Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.0 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CST GR15012194DIL SDL LDL NGL SP CAL AMS10072254DLL MSFL GR CAL AMS20682226FMS4 GR CAL AMS10072229MWD - GR RES DIR1452298RFT HP GR18322134RFT HP GR21252143RFT HP GR21252206VSP8002235 -
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 formasjonstestCONDUCTOR30230.036231.00.00LOTINTERM.13 3/81012.017 1/21027.01.35LOTINTERM.9 5/82248.012 1/42300.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling1861.05WATER BASED2311.05WATER BASED5971.05WATER BASED10271.20WATER BASED10271.20WATER BASED13701.1013.0WATER BASED17021.1815.0WATER BASED19111.2319.0WATER BASED21061.2318.0WATER BASED21151.2519.0WATER BASED21291.2517.0WATER BASED21351.2519.0WATER BASED21471.2618.0WATER BASED22941.2520.0WATER BASED23001.2620.0WATER BASED -
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]pdf0.21