25/10-8 A
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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. No drillstem test was performed in 25/10-8 A. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]1080.003460.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet13110.03147.6[m ]23147.03164.6[m ]33165.03202.0[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]92.2Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie2400.0[m]DCRRI2420.0[m]DCRRI2440.0[m]DCRRI2460.0[m]DCRRI2480.0[m]DCRRI2500.0[m]DCRRI2520.0[m]DCRRI2540.0[m]DCRRI2560.0[m]DCRRI2580.0[m]DCRRI2600.0[m]DCRRI2620.0[m]DCRRI3110.0[m]CAPT3118.8[m]CAPT3130.6[m]CAPT3140.3[m]CAPT3155.5[m]CAPT3160.7[m]CAPT3168.7[m]CAPT3179.4[m]CAPT3192.7[m]CAPT3202.0[m]CAPT3210.0[m]DCAPT3216.0[m]DCAPT3222.0[m]DCAPT3228.0[m]DCAPT3234.0[m]DCAPT3240.0[m]DCAPT3246.0[m]DCAPT3250.0[m]DCAPT3260.0[m]DCAPT3270.0[m]DCAPT3280.0[m]DCAPT3290.0[m]DCAPT3300.0[m]DCAPT3310.0[m]DCAPT3320.0[m]DCAPT3330.0[m]DCAPT3340.0[m]DCAPT3350.0[m]DCAPT3360.0[m]DCAPT3370.0[m]DCAPT3370.0[m]DCAPT3380.0[m]DCAPT3390.0[m]DCAPT3400.0[m]DCAPT3410.0[m]DCAPT3430.0[m]DCAPT3440.0[m]DCAPT -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet1406727808508501023110712371737181024172417250525842662275928532884288429863090309032453420 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.30 -
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]pdf58.55 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]GR RES DEN NEU DIR34603460GR RES DENS NEU30703406GR RES DIR10773110GR RES DIR31473165GR RES DIR31653202GR RES DIR32023460 -
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 3/81070.017 1/21080.01.56LOTOPEN HOLE3460.08 1/23460.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling2001.75low solids2001.75spud mud10341.75low solids10811.7435.050.0oil based12441.3034.0oil based19391.3036.0oil based23471.3038.060.5oil based24651.4048.052.0oil based29431.3037.054.0oil based29591.4043.054.0oil based31031.3837.058.0oil based31101.3838.056.0oil based31481.3839.054.0oil based31651.3836.054.0oil based32021.3835.050.0oil based33481.3835.048.0oil based33851.4035.0oil based34601.3838.052.0oil based34601.4436.050.0oil based