24/6-4
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Generell informasjon
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Brønnhistorie
GeneralWell 24/6-4 (Boa) was originally spudded as 24/6-3, which was junked for technical reasons. The well was designed to appraise the Kameleon 24/6-2 discovery made in 1998. The well objectives were: to verify the field wide extent of fluid and gas contacts, eliminate geologic risk associated with the Boa structure, provide additional time-depth control, provide gas, oil and water samples, and to test local stratigraphic control of the T57 shale horizon.Operations and resultsWell 24/6-4 was spudded 22 April 2003 with the semi-submersible installation Deepsea Bergen. The well was drilled to 1329 m when hole problems occurred and a technical sidetrack (24/6-4 T2) was decided. The sidetrack was kicked off at 1010 m and drilled slightly deviated to 1340 m (maximum deviation was 11.6°) where a vertical path was re-established. The well was ten drilled as planned to TD at 2325 m in the Paleocene Heimdal Formation. Water based bentonite mud spotted with KCl mud was used in the first well bore down to 1329 m. The sidetrack was drilled with oil-based mud.Apart from the target Heimdal Formation the only sandy formation penetrated was the Grid Formation from 1147 m to 1301 m. The Heimdal Sandstone was encountered at 2123 m and proved to be both gas and oil-bearing with a gas-oil contact (GOC) at 2147.7 m MD (2118.5 m TVD SS) and an oil-water contact (OWC) at 2176.3 m (2147.1 m TVD SS). This was consistent with shows described from core and cuttings within the Heimdal. No shows were recorded below 2177 m, apart from a possible trace of residual oil, at 2315 m. The GOC in 24/6-2 (Kameleon) was found at 2125 m TVD SS, ca 5 m deeper than in 24/6-4, and the OWC in 24/6-2 was found at 2143 m TVD SS, ca 4 m higher than in 24/6-4. Formation pressure measurements in the two wells showed 2 bars lower pressure in the 24/6-2 hydrocarbon column than in the 24/6-4 HC column. Communication between the two wells was thus found to be unlikely.A total of 54.65 m of core was cut in two cores in the Heimdal formation, with 99.3% recovery. Coring point was at 2124 m, determined by cuttings and drilling parameter changes. A total of 32 MDT formation pressures were obtained in 39 attempts from 2125.0 m to 2276.0 m. A total of 23 MDT fluid samples, 10 gas samples from 2138 m and 13 oil samples from 2162 m, were obtained.The well was permanently abandoned as a gas and oil discovery on 24 March 1969.TestingNo drill stem test was performed. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]1510.002325.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12124.02151.7[m ]22151.72178.3[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]54.3Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligDST0.000.00YES -
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 formasjonstestCONDUCTOR30205.036207.00.00LOTSURF.COND.13 3/8760.017 1/21329.00.00LOTINTERM.9 5/8987.012 1/41344.00.00LOTOPEN HOLE2325.08 1/22325.00.00LOT -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]DSI GR11292305LWD - EWR-4 GR SLD CTN BAT18732325MDT GR21252276MDT GR21380PEX HNGS9871019PEX HNGS DSI11291198PEX HNGS DSI ACTS11292295VSI GR11292295 -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet1443468841148130119251925204920702123 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.18 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB].PDF61.44.PDF0.63 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling2071.2026.0BENTONITE MUD2681.2026.0BENTONITE MUD7691.2027.0BENTONITE MUD8131.2822.0OIL (ENVIRON)9871.2216.0KCL10951.2518.0OIL (ENVIRON)13291.2033.0BENTONITE MUD13401.2831.0OIL (ENVIRON)13451.2029.0KCL 4%17801.2820.0OIL (ENVIRON)21241.2822.0OIL (ENVIRON)23251.2821.0OIL (ENVIRON)