6407/2-2
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Generell informasjon
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Brønnhistorie
GeneralWell 6407/2-2 is located east on the Halten Terrace off shore Mid Norway. The well tested the southern (Gamma) fault compartment of a horst with true vertical closure below the base Cretaceous level. The gas/condensate discovery well 6507/11-1 was located on the northern (Alpha) compartment of the same structure. The primary target of the well was the middle Jurassic sandstone; secondary target was Early Jurassic sandstone.The well is Reference Well for the Melke Formation.Operations and resultsWildcat well 6407/2-2 was spudded with the semi-submersible installation Treasure Saga on 17 May 1983 and drilled to TD at 3351 m, 71 m into the Triassic Grey Beds. After drilling the 26" hole the well was observed flowing and the mud weight was corrected. No other major problems occurred during drilling. After having drilled out of 13 3/8" casing shoe a cement plug was set from 1960 m - 1995 m, and one from 340 m - 400 m, due to temporarily plugging and abandonment of the well caused by strike The strike was efficient (no drilling progress was obtained) for 13 days, from June 6th to June 19th. The well was drilled with spud mud down to 865 m, with gypsum/polymer mud from 865 m to 1995 m, and with lignosulphonate mud from 1995 m to TD.The well proved mainly claystones down to the Middle Jurassic Sandstone. The Cainozoic with a total thickness of 1809 m overlies the Late Cretaceous where the topmost Maastrichtian is missing. Two hundred and forty meter of Late Cretaceous and 81.5 m of Early Cretaceous is preserved, separated by an unconformity ranging in age from Middle Santonian to Albian. High gas readings were experienced in the upper part of the Cretaceous together with heavier hydrocarbons detected for the first time in the well. A study of wire line logs, sidewalls cores and hole response indicate that the gas was overpressured, and trapped in a non-reservoir lithology. Base Cretaceous unconformity was encountered at 2409.5 m. The upper Jurassic was developed with 11.5 m of hot shales Spekk Formation and 39.5 m of silty claystones of the Melke Formation. As in other wells in the area, the Middle Jurassic Sandstone was divided by a shaly interval into an upper unit of very good reservoir properties (Garn Formation) and a lower unit of less good characteristics (Ile Formation). The upper unit was found to be gas bearing with a gas/water contact at 2516.5 m. All potential reservoir sequences below this depth were water bearing. The Åre Formation "Coal Unit" was 383 m thick and consisted of interbedded carbonaceous claystone/shale, fine sand and silt. It contained a total of 50 m of coals and shale layers.Twelve cores were cut, all in the Middle Jurassic sequence. Segregated FMT samples were collected at 2486 m (gas), 2512.5 m (gas), 2539.5 m (water), and 2546 m (water).The well was permanently abandoned on 31 July as a gas/condensate appraisal well on the Midgard Discovery.TestingOne drill stem test was carried out in the interval 2476 m to 2484 m in the gas bearing Middle Jurassic Garn Formation sandstone. The test produced 1000000 Sm3 gas /day on a 60/64" choke. The gas/oil ratio was ca 5900 Sm3/Sm3. The liquid petroleum had a density of 0.756 g/cm3 (55.6 deg API). -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?NOBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]400.003350.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12461.32471.1[m ]22473.02476.2[m ]32479.02497.0[m ]42497.02499.2[m ]52501.02506.4[m ]62508.02513.8[m ]72518.02527.0[m ]82527.02534.4[m ]92536.02548.0[m ]102552.02559.0[m ]112565.02579.7[m ]122582.02583.2[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]95.7Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie2030.0[m]DCPAS2087.0[m]SWCPAS2095.0[m]DCPAS2100.0[m]SWCPAS2110.0[m]DCPAS2131.0[m]SWCPAS2140.0[m]DCPAS2153.0[m]SWCPAS2155.0[m]DCPAS2175.0[m]SWCPAS2185.0[m]DCPAS2208.0[m]SWCPAS2220.0[m]SWCPAS2236.0[m]SWCPAS2242.0[m]SWCPAS2258.0[m]SWCPAS2260.0[m]DCPAS2273.0[m]SWCPAS2280.9[m]DCPAS2293.0[m]SWCPAS2310.0[m]SWCPAS2326.0[m]SWCPAS2333.0[m]SWCPAS2347.0[m]SWCPAS2350.0[m]DCPAS2364.0[m]SWCPAS2375.0[m]SWCPAS2388.0[m]SWCPAS2396.0[m]DCPAS2410.0[m]SWCPAS2416.0[m]SWCPAS2418.0[m]SWCPAS2423.0[m]SWCPAS2426.0[m]SWCPAS2431.0[m]SWCPAS2434.5[m]SWCPAS2438.5[m]SWCPAS2444.0[m]SWCPAS2450.0[m]SWCPAS2455.5[m]SWCPAS2461.3[m]CPAS2466.8[m]CPAS2482.0[m]DCPAS2497.0[m]DCPAS2515.5[m]SWCPAS2519.8[m]CPAS2522.3[m]CPAS2526.5[m]CPAS2527.8[m]CPAS2530.2[m]CPAS2532.0[m]CPAS2532.3[m]CPAS2552.4[m]CPAS2556.5[m]CPAS2566.0[m]CPAS2582.0[m]CPAS2604.5[m]SWCPAS2618.0[m]SWCPAS2627.3[m]DCPAS2642.0[m]DCPAS2657.0[m]DCPAS2669.0[m]SWCPAS2689.0[m]SWCPAS2705.5[m]SWCPAS2718.5[m]SWCPAS2732.0[m]DCPAS2747.0[m]DCPAS2762.0[m]DCPAS2777.0[m]DCPAS2792.0[m]DCPAS2810.0[m]DCPAS2822.0[m]DCPAS2836.0[m]DCPAS2852.0[m]DCPAS2882.0[m]DCPAS2902.0[m]DCPAS2917.0[m]DCPAS2931.0[m]SWCPAS2937.0[m]DCPAS2952.0[m]DCPAS2967.0[m]DCPAS2982.0[m]DCPAS3000.0[m]SWCPAS3012.0[m]DCPAS3037.0[m]SWCPAS3050.0[m]SWCPAS3057.0[m]DCPAS3072.0[m]DCPAS3098.0[m]SWCPAS3117.0[m]DCPAS3132.0[m]DCPAS3147.0[m]DCPAS3167.0[m]SWCPAS3177.0[m]DCPAS3195.0[m]SWCPAS3205.0[m]SWCPAS3214.0[m]SWCPAS3240.0[m]SWCPAS3251.0[m]SWCPAS3267.0[m]DCPAS3282.0[m]DCPAS3307.0[m]DCPAS3322.0[m]DCPAS3337.0[m]DCPAS3350.0[m]DCPAS -
Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligDSTDST12476.002484.00CONDENSATE25.06.1983 - 03:00YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet284284138415551555195519552035208820882149232823282395241024102417246124612515252726022602270928923275 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.58 -
Geokjemisk informasjon
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Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.19pdf0.31 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf16.89 -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.02476248423.8Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.0Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.01199940000.7700.690 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]ACBL17502676CAL398865CDL398865CDL8601986CDL CNL19542697CDL CNL26763345COREGUN430840COREGUN19752722COREGUN22202722COREGUN27233325DIFL LS BHC398865DIFL LS BHC8601986DIFL LS BHC19662698DIFL LS BHC26763346DLL MLL19662734FMT24622721FMT25120FMT28003315GR00HR DIP26753345HRDIP19662733SPECTRALOG19602695TEMP3291917TEMP3341975VELOCITY3983346 -
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 formasjonstestCONDUCTOR30398.036398.00.00LOTSURF.COND.20860.026865.01.61LOTINTERM.13 3/81966.017 1/21995.01.71LOTINTERM.9 5/82676.012 1/42735.00.00LOTOPEN HOLE3351.08 1/23351.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling4901.0950.0waterbased8801.1148.0waterbased17201.2750.0waterbased20001.4046.0waterbased26801.4860.0waterbased28001.1741.0waterbased32501.1544.0waterbased -
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]PDF0.28