6506/12-7
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Generell informasjon
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Brønnhistorie
GeneralWell 6506/12-7 was drilled as an exploration well on the Northeast Smørbukk structure. The primary purpose was to find hydrocarbon accumulations of significant amounts in the Middle and Early Jurassic sandstone reservoirs. Secondary objectives were to check for hydrocarbon accumulations deeper than the structural closure of the main field. The well should also verify the geophysical and structural interpretation and improve the geological, paleontological and geochemical understanding of the area. Total depth was to be in rocks of Triassic age or 4000 m in order to satisfy the licence commitment.Operations and resultsWell 6506/12-7 was spudded with the semi-submersible installation Dyvi Delta on 7 April 1987 and drilled to TD at 4840 m in the Early Jurassic Tilje Formation. Drilling proceeded without significant problems. The well was drilled with spud mud down to 597 m, with gypsum/polymer mud from 597 m to 4427 m, and with a pre-hydrated Bentonite/Lignosulphonate mud system from 4427 m to TD. No shallow gas was encountered.The first show appeared in the Lange Formation at 3791 - 3794 m. During coring there were oil shows in Garn and Ile Formations, while Ti1je only contained small traces of oil. Both cores and logs indicated that Garn and Ile Formations were hydrocarbon bearing down to ca 4538 m, while Ti1je Formation was indicated to be water bearing. The porosity was assumed to be between 8 and 12 %. Mobil wanted to test the Ti1je Formation to get a fluid sample to understand the logs better. This was a wise decision because the formation produced oil at very good rates. The Garn Formation on the other hand did not produce any formation fluid when tested. The oil/water contact in the Tilje Formation was not found because the logs did not give clear data.Eight cores were cut in the well with a total recovery of 62.6 m core. One core was cut in the interval 4053 - 4058 m (Spekk Formation), two cores from 4427.5 to 4439.2 m bas Garn Formation), four cores in the interval 4467 - 4502 m (Not-Ile Formations), and one core from 4672 to 4700 m (all of Ror Formation with base Tofte and top Tilje). RFT fluid samples were taken at 4420 m (Garn), 4496.5 m (Ile), and 4708 m (Tilje).The well was permanently abandoned on 12 August 1987 as a gas/condensate appraisal.TestingFour DSTs were performed in this well.DST 1 in the interval 4741 - 4748 m in the Tilje Formation produced 520 Sm3 condensate, 230000 Sm3 gas and no water through a 32/64" choke. The GOR was 442 Sm3/Sm3, the condensate density was 0.820 g/cm3, and the gas gravity was 0.770 (air = 1). Maximum down-hole temperature recorded in the test was 164 deg C.DST 2 in the interval 4702 - 4707 m in the Tilje Formation produced 200 Sm3 condensate, 145000 Sm3 gas and no water through a 20/64" choke. The GOR was 725 Sm3/Sm3, the condensate density was 0.818 g/cm3, and the gas gravity was 0.785 (air = 1). Maximum down-hole temperature recorded in the test was 164 deg C.DST 3 in the interval 4474 - 4514 m in the Ile Formation produced 70 Sm3 condensate, 110000 Sm3 gas and 4 - 20% water through a 20/64" choke. The GOR was 1570 Sm3/Sm3, the condensate density was 0.790 g/cm3, and the gas gravity was 0.745 (air = 1). Maximum down-hole temperature recorded in the test was 136 deg C.DST 4 in the interval 4414 - 4439 m in the lower Garn Formation flowed 1.7 m3 fluids into the well bore. Only gas and mud came to surface during reverse circulation. No formation fluid was observed. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]610.004840.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet14053.04053.5[m ]24427.54435.5[m ]34436.04439.1[m ]44467.04468.1[m ]54468.54475.8[m ]64477.54483.0[m ]74483.54502.5[m ]84672.04700.0[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]72.6Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie4388.0[m]DCRRI4394.0[m]DCRRI4397.0[m]DCRRI4412.0[m]DCRRI4418.0[m]DCRRI4424.0[m]DCRRI4439.0[m]CRRI4445.0[m]DCRRI4451.0[m]DCRRI4457.0[m]DCRRI4463.0[m]DCRRI4467.0[m]CRRI4505.0[m]DCRRI4511.0[m]DCRRI4517.0[m]DCRRI4523.0[m]DCRRI4529.0[m]DCRRI4535.0[m]DCRRI4541.0[m]DCRRI4547.0[m]DCRRI4559.0[m]DCRRI4565.0[m]DCRRI4571.0[m]DCRRI4577.0[m]DCRRI4583.0[m]DCRRI4589.0[m]DCRRI4595.0[m]DCRRI4601.0[m]DCRRI4607.0[m]DCRRI4613.0[m]DCRRI4619.0[m]DCRRI4625.0[m]DCRRI4631.0[m]DCRRI4637.0[m]DCRRI4643.0[m]DCRRI4655.0[m]DCRRI4661.0[m]DCRRI4781.0[m]DCRRI4787.0[m]DCRRI4793.0[m]DCRRI4799.0[m]DCRRI4805.0[m]DCRRI4811.0[m]DCRRI4818.0[m]DCRRI4823.0[m]DCRRI4829.0[m]DCRRI -
Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligDSTTEST14741.004748.0018.07.1982 - 02:00YESDSTTEST24702.004707.0024.07.1982 - 14:25YESDSTTEST34474.004512.0030.07.1982 - 00:00YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet2961539185618562227222722972396326532653306404240424114439643964439447445564556462946754693 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.77 -
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]pdf0.44pdf0.37 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf30.60 -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.04741474812.72.0470247077.93.04474451415.94.0441444390.0Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.02.03.04.0Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.05201450000.8200.7704422.02001450000.8180.7857253.0701100000.7900.74515714.0 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CDL CNL SPL GR43874840DIFL ACL CDL5894379DIFL ACL GR42004841DLL MLL GR43874841HPFM44204813HPFM GR44204705HRDIP43854840MWD - GR RES DIR4103321VELOCITY2704800 -
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 formasjonstestCONDUCTOR30406.536410.00.00LOTSURF.COND.20589.026596.01.51LOTINTERM.13 3/82203.017 1/22221.01.81LOTINTERM.9 5/84389.012 1/44427.01.80LOTLINER74838.08 1/24840.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling4631.451700.06.3WATER BASED11.08.198720501.651500.02.5WATER BASED10.08.198722211.451700.07.2WATER BASED21.05.198724501.622100.06.7WATER BASED03.06.198724501.622200.07.2WATER BASED01.06.198724501.622100.05.9WATER BASED01.06.198724501.622300.07.2WATER BASED02.06.198724501.622300.08.5WATER BASED04.06.198724501.622300.05.9WATER BASED05.06.198728151.62670.08.0WATER BASED25.05.198729341.62560.07.6WATER BASED25.05.198729741.62520.07.2WATER BASED25.05.198731501.62630.08.0WATER BASED27.05.198732311.62560.08.9WATER BASED29.05.198733001.62550.08.0WATER BASED29.05.198733791.622000.08.9WATER BASED01.06.198737601.622300.07.2WATER BASED09.06.198738411.621900.08.0WATER BASED09.06.198739341.622200.06.8WATER BASED09.06.198740161.622300.06.8WATER BASED09.06.198740531.622400.06.4WATER BASED10.06.198740581.672200.07.6WATER BASED11.06.198740921.651800.05.9WATER BASED12.06.198741671.651900.05.9WATER BASED15.06.198741821.651500.02.5WATER BASED10.08.198742601.651900.05.5WATER BASED15.06.198743541.652500.05.9WATER BASED15.06.198743691.201400.04.2WATER BASED25.06.198744081.25900.01.7WATER BASED10.08.198744251.652400.05.1WATER BASED16.06.198744271.652200.04.2WATER BASED17.06.198744271.652200.03.8WATER BASED18.06.198744271.652000.04.2WATER BASED19.06.198744271.652000.04.2WATER BASED22.06.198744281.251600.04.2WATER BASED22.06.198744361.251000.03.4WATER BASED23.06.198744521.251000.03.4WATER BASED24.06.198744551.251000.01.7WATER BASED05.08.198744551.25800.01.7WATER BASED07.08.198744781.251600.04.2WATER BASED26.06.198745021.251300.04.2WATER BASED29.06.198745601.251500.04.7WATER BASED29.06.198746201.251600.05.1WATER BASED29.06.198746561.251700.05.1WATER BASED30.06.198746721.25800.01.3WATER BASED28.07.198746721.25800.01.7WATER BASED29.07.198746721.25800.01.3WATER BASED31.07.198746721.25900.02.1WATER BASED03.08.198746721.25900.01.7WATER BASED04.08.198746881.251500.04.7WATER BASED01.07.198746921.25800.01.3WATER BASED27.07.198747201.25800.01.7WATER BASED23.07.198747201.25900.01.3WATER BASED24.07.198747201.25400.01.7WATER BASED27.07.198747201.25800.01.3WATER BASED27.07.198747201.25900.01.7WATER BASED22.07.198747301.25900.01.7WATER BASED21.07.198747521.251600.04.2WATER BASED02.07.198748381.251900.05.1WATER BASED13.07.198748381.251300.02.5WATER BASED13.07.198748381.261200.02.5WATER BASED13.07.198748381.261100.02.5WATER BASED13.07.198748381.261100.02.5WATER BASED14.07.198748381.251000.05.2WATER BASED15.07.198748381.261000.02.5WATER BASED17.07.198748381.25900.01.7WATER BASED20.07.198748381.252300.07.6WATER BASED13.07.198748381.251600.03.8WATER BASED16.07.198748381.251000.02.1WATER BASED20.07.198748401.251900.05.1WATER BASED03.07.198748401.252300.04.6WATER BASED06.07.198748401.252200.04.2WATER BASED06.07.198748401.252400.07.2WATER BASED06.07.198748401.252100.06.3WATER BASED07.07.1987 -
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]pdf0.29