25/10-8
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Generell informasjon
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Brønnhistorie
GeneralWell 25/10-8 was drilled with "Deep Sea Trym" to test the Hanz prospect with multiple targets. The well found gas and oil in the Upper Jurassic. A sidetrack, 25/10-8 A, was drilled to test the extension of this discovery to the east.Operations and resultsExploration well 25/10-8 was spudded with the semi-submersible installation "Deepsea Trym" 17 February 1997 and drilled to a total depth of 2653 m in the Early Permian Rotliegend Group. Water based mud was used down to 1080 m and an AncoVert oil based mud from 1080 to TD. Well 25/10-8 found the Heimdal Fm to be water wet, the Upper Jurassic sands to contain gas and oil and the Middle Jurassic and Rotliegendes sands to be water wet. A core was cut from 2080 - 2107 m in the Heimdal Formation, a second core was cut from 2518 - 2546 m in Callovian Jurassic to Triassic sediments. After testing the well was plugged back to the 13 3/8" casing on 4 April 1997 as an oil and gas discovery. Sidetrack 25/10-8 A was kicked off from 1067 m and drilled to a total depth of 3460 m (2537 m TVD RKB) in Late Jurassic. An 8 1/2" hole was drilled to core point at 3110 m using oil based mud. Three cores were cut in the Late Jurassic; 3110 to 3147 m, 3147 to 3165 m , and 3165 to 3202 m. No wireline logs were run in well 25/10-8 A, only MWD. No fluid samples were taken. All reservoir sands were found water wet and sidetrack 25/10-8 A was permanently abandoned as a dry well on 27 April 1997.TestingWell 25/10-8 was perforated from 2391.4 - 2398.4 m in the Upper Jurassic. The drill stem test flowed 692 Sm3/D oil of density 0.84 g/cm3 -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]1090.002652.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12080.02107.9[m ]22518.02546.5[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]56.4Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligDSTDST12392.002398.0030.03.1997 - 09:20YES -
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 formasjonstestCONDUCTOR30201.036201.00.00LOTSURF.COND.13 3/81067.017 1/21080.01.56LOTINTERM.9 5/82249.012 1/42249.00.00LOTLINER72653.08 1/22653.00.00LOT -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.02392239815.9Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.024.00025.00094Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.06920.8400.700116 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBIL GR CHT23452650DPR - GR RES DIR67214DPR - GR RES DIR10702066DPR - GR RES DIR22352505DPR - GR RES DIR25052596DPR - GR RES MDL MNP20232235DPR GRC MDL MNP23562639GR CCL22412364HDLL MAC DGR10502649MRIL ZDL CND DSL10652637RCI GR20782629RCI GR21172528RCI GR23722397SWC GR15022598VSP4602650 -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet140682794846846102011071232155116131941194119872047207721222204220922092266235423542372245025112511253625772601 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.45 -
Geokjemisk informasjon
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Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf80.09 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling2001.75spud mud2001.75low solids10341.75low solids10801.4036.0oil based10811.4036.0oil based10811.74low solids10831.3330.0oil based11841.3232.0oil based14921.3237.0oil based15811.3234.0oil based17701.3235.0oil based18841.3233.0oil based20801.3234.0oil based20921.3232.0oil based21071.3230.0oil based22491.3232.0oil based23601.3232.0oil based25181.3233.0oil based25451.3233.0oil based26101.3230.0oil based26531.3228.0oil based -
Palynologiske preparater i Sokkeldirektoratet
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