7/11-9
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Generell informasjon
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Brønnhistorie
GeneralWell 7/11-9 is located ca 5.5 km from the UK border, North of the Cod and Mime Fields on the Cod Terrace. It was designed to test the sedimentary sequences that were seismically correlateable with Ula sands in the 7/11-5 Mime Discovery. The closure of prospect was dependent on pinch-out of the Ula sands and sealing Triassic rocks over the faults to the east and west. Prognosed top of the Ula sands was at 4119 m, and the thickness 90 m. Prognosed TD was at 4260 m in Triassic rocks.Operations and resultsWell 7/11-9 was spudded with the semi-submersible installation Byford Dolphin on 26 November 1985 and drilled to TD at 4271 m in the Triassic Smith Bank Formation. The well was drilled with seawater and hi-vis pills down to 723 m and with KCl polymer mud from 723 m to 3947 m. Due to stuck drill pipe at 3706 m pills with diesel/Imco Spot/Pipelax was spotted. A total of six days were spent freeing the pipe and pulling out of hole before drilling could commence. The 8 3/8" section from 3947 m to TD was drilled with KCl polymer with additions of Chrome lignite starting at 4084 m.Top limestone came in at 3162 m, and the limestone continued down to top Rødby Formation at 3899 m. Top Jurassic was encountered at 4027 m. Grey/brownish siltstone of the Farsund Formation was encountered at 4093 m. The Ula Formation sand came in at 4168.5 m, and three cores were cut in the interval 4165- 4209.7 m. The cores indicated a 14 m column of shows all through the Ula sands down to top Triassic rocks at 4182.5 m. RFT-tests were run and showed very low permeability, which was confirmed by a DST-test. No shows were reported from above or below the Ula Formation. One RFT sample was recovered from 4181 m. The Horner corrected temperature from 5 highly consistent wire line BHT's at TD gave a temperature of 170 deg C.The well was permanently abandoned on 9 March 1986 as a dry well.TestingOne DST-test was performed in the interval 4168.4 to 4182.5 m. Only a small amount of water was produced (3.1 Sm3/day). BHT during the test was 156.1 deg C. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]210.004260.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet14166.04179.0[m ]24179.04190.0[m ]34191.04209.7[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]42.7Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie2969.0[m]SWCRRI2985.0[m]SWCRRI3009.0[m]SWCRRI3044.5[m]SWCRRI3062.0[m]SWCRRI3077.0[m]SWCRRI3104.0[m]SWCRRI4035.0[m]SWCRRI4070.0[m]SWCRRI4083.0[m]DCHALIB4140.0[m]SWCRRI4145.0[m]DCHALIB4160.0[m]CHALIB4174.6[m]CHALIB4177.4[m]CHALIB4178.8[m]CRRI4180.0[m]CRRI4216.5[m]SWCRRI4228.0[m]SWCRRI -
Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligDSTDST14169.004182.5003.03.1986 - 00:00YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet1061452296629662993300930343094316231623229362538723874389938994027402740934169416941834183 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.70 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.25pdf0.34 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf14.69 -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.04170418344.5Borestrengtester (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]1.0 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL VDL5082193CBL VDL16003933CST GR27913952CST GR39604265DLL MSFL38904255ISF LSS GR SP1904272LDL CNL GR21973950LDL CNL NGT39334265LDL GR CAL7082212RFT41694181SHDT27703250SHDT38003950SHDT39334274VSP8634256 -
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 formasjonstestCONDUCTOR30190.036192.00.00LOTSURF.COND.20708.026723.02.14LOTINTERM.13 3/82195.017 1/22212.02.00LOTINTERM.9 5/83932.012 1/43947.00.00LOTLINER74255.08 1/24272.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling1921.20WATER BASED27.11.19851921.07WATER BASED01.12.19856351.105.012.0WATER BASED01.12.19857231.1115.022.0WATER BASED01.12.19857231.115.09.0WATER BASED01.12.19857231.1010.017.0WATER BASED03.12.19857231.1610.017.0WATER BASED04.12.19857231.1515.012.0WATER BASED05.12.19857231.1515.012.0WATER BASED08.12.19858301.1616.012.0WATER BASED08.12.198513551.2620.014.0WATER BASED08.12.198518631.5830.011.0WATER BASED10.12.198520581.6034.013.0WATER BASED11.12.198522121.6034.010.0WATER BASED12.12.198522121.6332.013.0WATER BASED15.12.198522121.6638.012.0WATER BASED15.12.198522121.6626.012.0WATER BASED15.12.198522121.6623.09.0WATER BASED16.12.198522121.6623.09.0WATER BASED17.12.198522331.6026.010.0WATER BASED18.12.198524041.6022.011.0WATER BASED19.12.198524781.6020.010.0WATER BASED22.12.198526611.6017.010.0WATER BASED22.12.198528081.6024.011.0WATER BASED22.12.198529451.6022.010.0WATER BASED23.12.198529681.6021.010.0WATER BASED26.12.198530931.6026.012.0WATER BASED26.12.198531591.5724.010.0WATER BASED29.12.198532111.5623.011.0WATER BASED29.12.198532411.5623.011.0WATER BASED29.12.198533471.5623.010.0WATER BASED30.12.198533641.6026.010.0WATER BASED01.01.198633751.6023.08.0WATER BASED01.01.198635051.6022.09.0WATER BASED02.01.198636131.6019.09.0WATER BASED05.01.198636961.6023.012.0WATER BASED05.01.198637191.7427.09.0WATER BASED06.03.198637191.7426.08.0WATER BASED08.03.198637201.6022.012.0WATER BASED05.01.198637201.6019.010.0WATER BASED07.01.198637201.6025.010.0WATER BASED08.01.198637201.6024.010.0WATER BASED09.01.198637201.6023.010.0WATER BASED13.01.198637201.6023.09.0WATER BASED13.01.198637391.6025.010.0WATER BASED13.01.198637561.6025.09.0WATER BASED14.01.198637751.6026.011.0WATER BASED14.01.198637851.6028.011.0WATER BASED15.01.198638221.6030.010.0WATER BASED16.01.198638341.6028.09.0WATER BASED19.01.198638771.6028.09.0WATER BASED19.01.198639001.6027.09.0WATER BASED19.01.198639261.6027.010.0WATER BASED19.01.198639471.6029.08.0WATER BASED22.01.198639471.6029.010.0WATER BASED03.02.198639471.6029.08.0WATER BASED29.01.198639471.6027.012.0WATER BASED03.02.198639471.6027.011.0WATER BASED03.02.198639471.6029.012.0WATER BASED03.02.198639471.6029.011.0WATER BASED03.02.198639471.6029.011.0WATER BASED28.01.198639621.6025.010.0WATER BASED28.01.198639951.6028.012.0WATER BASED30.01.198640151.6030.012.0WATER BASED30.01.198640251.8347.018.0WATER BASED30.01.198640521.8943.013.0WATER BASED04.02.198640841.8940.010.0WATER BASED05.02.198640841.8935.010.0WATER BASED07.02.198641281.8934.010.0WATER BASED07.02.198641331.7425.08.0WATER BASED05.03.198641331.7423.05.0WATER BASED04.03.198641651.8932.08.0WATER BASED11.02.198641791.8928.08.0WATER BASED11.02.198641791.8931.010.0WATER BASED11.02.198642141.8930.07.0WATER BASED11.02.198642411.6025.010.0WATER BASED26.12.198542601.8930.07.0WATER BASED12.02.198642711.8931.07.0WATER BASED13.02.198642711.8931.06.0WATER BASED17.02.198642711.8929.05.0WATER BASED17.02.198642711.8929.05.0WATER BASED18.02.198642711.8929.05.0WATER BASED19.02.198642711.8929.05.0WATER BASED20.02.198642711.8930.07.0WATER BASED23.02.198642711.8930.08.0WATER BASED23.02.198642711.8928.06.0WATER BASED23.02.198642711.7427.07.0WATER BASED25.02.198642711.7429.07.0WATER BASED25.02.198642711.7429.07.0WATER BASED27.02.198642711.7424.06.0WATER BASED27.02.198642711.7432.07.0WATER BASED03.03.198642711.8933.06.0WATER BASED21.02.198642711.7424.06.0WATER BASED02.03.1986 -
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]pdf0.21