35/11-13
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Generell informasjon
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Brønnhistorie
GeneralWell 35/11-13 is an exploration well in PL 090B on the Astero prospect, which is located north of the Fram West field. The primary objectives were to test the presence and type of hydrocarbons in the Oxfordian Turbidite sands of the Astero prospect. The chosen location was designed to test the Astero prospect within structural closure and stratigraphic trap, close to the top of the structure, in an area where there was good HC indication with thick reservoir sand thickness, leaving acceptable up dip volumes.Operations and resultsWell 35/11-13 was spudded with the semi-submersible installation Deepsea Trym on 18 March 2005 and drilled to TD at 3296 m in sediments of the Late Jurassic Heather Formation. The well was drilled without significant technical problems or delays. The mud used was spud mud down to 701 m and "Aquadrill" glycol mud from 701 m to TD.Water wet Paleocene sandstones were penetrated at 1697 - 1752 m (Heimdal Formation) and at 1842 - 1923 m (Ty Formation). The well encountered a 111 m thick Draupne Formation at 2902 m. The Heather Formation was encountered at 3013 m with Intra-Heather Oxfordian turbiditic sandstones from 3096 m to 3206 m. The sandstones were hydrocarbon bearing and from MDT pressure test results, a gas oil contact was inferred at 3098 m and an oil water contact (FWL) at 3137 m.Two cores were cut in the interval 3100 to 3142 m in the Oxfordian turbidites. They cores comprised mainly sandstones with occasional thin siltstones. MDT fluid samples were taken at four levels across the reservoir: 3097.0 m (gas and 0.789 g/cm3 oil), 3107.0 m (0.848 g/cm3 Oil), 3128.0 m (Oil), and 3157.5 m (Water).The well was permanently abandoned on 28 May 2005 as an oil and gas discovery.TestingA Drill Stem Test was undertaken at 3111.5 to 3130 m in the oil-bearing zone of the Oxfordian sands. A fixed choke size of 32/64" was selected for the main flow period achieving average flow rates of 500 m3/day oil and 78000 m3/day of gas (a total of 2.7 m3 produced water was recorded). A maximum of 2.5 ppm H2S and 6 % CO2 was measured during this period. The oil gravity at 15 deg C was 36 deg API and the GOR was 160 Sm3/Sm3. The formation temperature at mid perforation was determined to 118 deg C. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]710.003292.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet13100.03114.4[m ]23115.03134.3[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]33.7Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie3104.4[m]CGEOSTRAT3105.3[m]CGEOSTR3106.8[m]CGEOSTR3109.5[m]CGEOSTR3115.2[m]CGEOSTR3125.8[m]CGEOSTR3127.5[m]CGEOSTR3132.8[m]CGEOSTR3133.7[m]CGEOSTR -
Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligDSTTEST 10.000.00OIL12.05.2005 - 17:15YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet38776315411541155315981697175217691842192319381938208825652626264626712671270029022902301330963206 -
Geokjemisk informasjon
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Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]MDT GR30973205MDT GR30973157MSCT GR29603151MWD LWD - DIR ECD386476MWD LWD - DIR GR RES ECD4763291SP DSI HRLA PEX ECS29253268VSP GR16113290 -
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 formasjonstestCONDUCTOR30471.036474.00.00LOTSURF.COND.20695.026701.01.47LOTINTERM.13 3/81751.017 1/21757.01.64LOTINTERM.9 5/82924.012 1/42932.01.70LOTLINER73290.08 1/23291.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling4411.05WATER BASED4741.50WATER BASED7011.2013.0WATER BASED9231.2012.0WATER BASED15001.3011.0WATER BASED17571.3417.0WATER BASED17811.3016.0WATER BASED25551.3015.0WATER BASED26901.3011.0WATER BASED28141.3014.0WATER BASED29321.3016.0WATER BASED31001.3015.0WATER BASED31421.3017.0WATER BASED32901.10WATER BASED32911.3018.0WATER BASED -
Tynnslip i Sokkeldirektoratet
Tynnslip i Sokkeldirektoratet DybdeEnhet3133.00[m ]3123.76[m ]3111.43[m ]3103.50[m ] -
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]pdf0.22