6506/12-10 A
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Generell informasjon
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Brønnhistorie
GeneralThe main objective of well 6506/12-10 A was to appraise the down flanks hydrocarbons in the Garn, Ile, Tilje, and the Åre Formation, on the Smørbukk Field.Operations and resultsThe appraisal sidetrack well 6506/12-10 A was kicked off with the semi-submersible installation "Ross Rig" from 2823 m in 6506/12-10 on 25 June 1995 and drilled to 6260 m with a total cost considerably higher than planned budget. The higher costs were mainly due to kick off and orienting problems from the vertical well, lots of trips to change bits, milling cones lost in the 12 1/4" hole and problems cementing the 7" liner. In general the drilling rate was lower than expected. Oil based mud (ANCO VERT) was used trough out the sidetrack. High mud weight (1.80 g/cm3) was used in the beginning to prevent formation damage during drilling. This can have caused lower ROP than expected. Prior to testing, a lot of leakage problems occurred within the test string mainly due to bad quality of the o-rings in the Halliburton test-valves. The string was pulled and reran 5 times before all the problems were sorted out. Total lost times in the test phase was 893 hrs (squeeze cementing of 7" liner, leak in BHA of the test string, BOP problems, WOW, fishing of packer slips).Eleven cores were cut in the Tilje and Åre Formations. Two FMT samples were taken in the Garn Formation (4397.7 m TVD and 4402.7 m TVD, respectively) and one in the Tilje Formation (4806.8 m TVD). The Garn samples contained water while the Tilje sample contained oil. The 6506/12-10A well proved producible oil in the Garn, Ile, Tilje and upper parts of the Åre Formations in good sand intervals. After testing the well 6506/12-10 A was permanently plugged and abandoned on 11 December 1995 as an oil and gas appraisal well.TestingThe test plan included short tests of the Åre and Tilje Formations followed by a long term production period. Thereafter a minifrac from the rig plus a massive stimulation job of the Tilje Formation should be performed. The objectives for this operations was to try to establish the productivity improvements from a massive stimulation, and thereby more accurate be able to evaluate the production potential for the Tilje Formation within the Smørbukk field. Due to problems during cementing of the 7" liner, severe zone isolation problems occurred and the Åre test was abandoned for the more important Tilje test. The production test of well 6506/12-10 A perforated the interval 5686 m to 5706 m (4793 m to 4813 m TVD RKB) in the Tilje Formation. The Tilje test started, but it became more or less obvious during the test that it was the Åre formation that was producing 90 -100 % of the fluid and Tilje only contributed with a very small amount of fluid. Later analysis of test results, PVT analysis, comparison of FMT data from earlier wells and this well, confirm that it was the Åre formation that was produced during the test, and that the cement bound between the Åre and Tilje was broken down during the test. At the end of the test a minifrac was performed in the perforated interval to indicate stress level in the Tilje formation. The test was ended after two shiploads of oil were sent to Mongstad, and within the time budget. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]2800.006260.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet15674.05711.5[m ]25711.55748.4[m ]35948.05948.5[m ]45959.05971.2[m ]55972.05984.7[m ]65986.06005.0[m ]76038.06057.0[m ]86057.06060.7[m ]96119.06128.6[m ]106160.06178.0[m ]116223.06230.5[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]176.4Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligDSTTEST10.000.0028.10.1995 - 13:00YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet309145219141914222722272315238423842555284834573457358048334901490149665246524653055338541654165468552455525711 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.46 -
Geokjemisk informasjon
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Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf33.51 -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.05707568619.0Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.022.000165Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.04501687500.810375 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]4-ARM CAL GR27803477CBL VDL GR56375776DCBIL GR52606202DPIL MAC SLH TTRM58456259DPIL MAC ZDL CN GR52485552DPIL MAC ZDL CN SLH TTRM52495878FMT QDYNE GR52735842FMT VPC CHT GR59266197MND DPR52605553MRIL XDL DN DSL52485880MWD DPR27805260MWD DPR55535781ZDL CN TTRM GR58456259ZOVSP GR28006175 -
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 formasjonstestINTERM.9 5/85248.012 1/45250.00.00LOTLINER76260.08 1/26260.01.80LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling28101.8058.012.0OIL BASED06.07.199528101.8058.012.5OIL BASED11.07.199528101.7656.010.0OIL BASED11.07.199528101.7457.011.0OIL BASED11.07.199528101.7052.010.0OIL BASED11.07.199528101.7053.010.0OIL BASED12.07.199528101.7048.09.0OIL BASED14.07.199528101.7047.09.5OIL BASED14.07.199528101.7046.09.5OIL BASED17.07.199528101.7047.09.0OIL BASED17.07.199528101.7044.09.0OIL BASED17.07.199528101.7040.08.5OIL BASED18.07.199528101.7043.08.0OIL BASED19.07.199528101.7041.08.0OIL BASED20.07.199528101.8059.010.5OIL BASED03.07.199528101.8058.011.5OIL BASED04.07.199528101.7653.010.0OIL BASED11.07.199528201.6647.08.5OIL BASED28.06.199528201.7044.08.0OIL BASED30.06.199528201.8056.09.5OIL BASED03.07.199528201.8060.011.5OIL BASED03.07.199528591.6644.08.0OIL BASED29.06.199529651.7044.08.0OIL BASED30.06.199531091.8056.09.5OIL BASED03.07.199532211.8060.011.5OIL BASED03.07.199532621.8059.010.5OIL BASED03.07.199533011.8058.011.5OIL BASED04.07.199533621.8058.012.0OIL BASED06.07.199533631.8058.012.5OIL BASED11.07.199534601.7656.010.0OIL BASED11.07.199534651.7653.010.0OIL BASED11.07.199535351.7457.011.0OIL BASED11.07.199536431.7052.010.0OIL BASED11.07.199537301.7053.010.0OIL BASED12.07.199537751.7048.09.0OIL BASED14.07.199538901.7047.09.5OIL BASED14.07.199540991.7046.09.5OIL BASED17.07.199543001.7047.09.0OIL BASED17.07.199544301.7044.09.0OIL BASED17.07.199544571.7040.08.5OIL BASED18.07.199546701.7043.08.0OIL BASED19.07.199547021.7041.08.0OIL BASED20.07.199549001.7548.09.5OIL BASED21.07.199549901.7552.010.0OIL BASED24.07.199549901.7550.010.0OIL BASED24.07.199549901.7554.011.0OIL BASED25.07.199549901.7551.010.0OIL BASED24.07.199549901.7554.011.0OIL BASED26.07.199550411.7751.010.0OIL BASED24.07.199550761.7852.010.0OIL BASED24.07.199551751.7850.010.0OIL BASED24.07.199552451.2025.07.0OIL BASED07.08.199552601.2028.07.5OIL BASED07.08.199552601.2028.07.0OIL BASED07.08.199552601.7854.011.0OIL BASED25.07.199552601.7854.011.0OIL BASED26.07.199552601.2028.07.5OIL BASED08.08.199552601.2029.08.0OIL BASED10.08.199552601.2028.07.0OIL BASED10.08.199552601.2028.07.5OIL BASED15.08.199552601.2029.07.0OIL BASED15.08.199552601.2029.07.5OIL BASED15.08.199552601.2029.08.5OIL BASED17.08.199552601.2030.07.5OIL BASED17.08.199552601.2028.08.0OIL BASED17.08.199552601.2127.07.0OIL BASED07.08.199552601.2028.08.0OIL BASED18.08.199552731.2028.08.0OIL BASED21.08.199552731.2028.08.0OIL BASED21.08.199552731.2028.08.0OIL BASED21.08.199552731.2028.08.0OIL BASED22.08.199552731.2031.09.0OIL BASED23.08.199552731.2035.010.0OIL BASED29.08.199552731.2036.010.0OIL BASED01.09.199552731.2035.09.5OIL BASED30.08.199552801.2124.06.0OIL BASED07.08.199553101.2025.06.5OIL BASED07.08.199553451.2026.07.5OIL BASED07.08.199553711.2025.07.0OIL BASED07.08.199553791.2026.07.5OIL BASED07.08.199553801.2028.08.0OIL BASED21.08.199554321.2027.07.0OIL BASED07.08.199554571.2028.07.5OIL BASED07.08.199554991.2028.07.0OIL BASED07.08.199555361.2028.07.5OIL BASED08.08.199555531.2029.08.0OIL BASED10.08.199556131.2028.07.0OIL BASED10.08.199556451.2028.07.5OIL BASED15.08.199557111.2029.07.0OIL BASED15.08.199557371.2028.08.0OIL BASED22.08.199557371.2028.08.0OIL BASED21.08.199557371.2031.09.0OIL BASED23.08.199557371.2028.08.0OIL BASED21.08.199557531.2029.07.5OIL BASED15.08.199557811.2029.08.5OIL BASED17.08.199558461.2030.07.5OIL BASED17.08.199558901.2028.08.0OIL BASED17.08.199558901.2032.09.0OIL BASED25.08.199558901.2030.07.5OIL BASED29.08.199558901.2033.09.0OIL BASED25.08.199558901.2028.08.0OIL BASED18.08.199558931.2029.08.5OIL BASED29.08.199559121.2033.08.5OIL BASED29.08.199559481.2035.010.0OIL BASED29.08.199559591.2035.09.5OIL BASED30.08.199559721.2036.010.0OIL BASED01.09.1995 -
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