34/7-16 R
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Generell informasjon
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Brønnhistorie
<GeneralWell 34/7-16 R is a re-entry of well 34/7-16, which was suspended due to time schedule for the rig. The well is located between the Statfjord and Snorre Fields on Tampen Spur in the Northern North Sea. The purpose of the re-entry was to test the hydrocarbon-bearing Brent Group reservoir and also to drill through and test the Statfjord Formation.Operations and resultsWell 34/7-16 was re-entered (34/7-16 R) on 4 September 1990 by the semi-submersible rig Treasure Saga and drilled through the Statfjord formation to TD at 2980 m, 35 m into the Late Triassic Lunde Formation. The well was drilled with KCl mud.Both the Statfjord formation and the Lunde Formation proved to be water bearing. The Statfjord Formation (2821 - 2945 m) had an estimated average log porosity of 21.7% and a net to gross ratio of 0.56.The well suspended on 15 October 1990 as an oil appraisal.TestingThree DST tests were performed in well 34/7-16 R.DST 1 tested the interval 2821 - 2837 m in the Statfjord Formation. The test was mainly designed to get representative samples of Statfjord Formation water. The initial pressure and temperature at the top perforation was 406 bar and 102 deg C. Clean water with very little gas was produced. The gas gravity was 0.64 (air = 1). It was not possible to maintain stable flowing conditions due to plugging at the choke manifold, but a flow-rate of 1450 m3/day at a wellhead pressure of 105 bar was measured at the end of the 12 hrs flow period.DST 2 tested a four metres zone from 2454 - 2458 m in the Rannoch Formation. The main objective was to evaluate the lateral extension of the two calcite cemented layers (2451 - 2453 and 2459 - 2461 m). The initial pressure and temperature at the top perforation was 366 bar and 90 deg C. Oil with a GOR of 55 Sm3/Sm3 was produced. The gas gravity was 0.75 (air = 1) and the CO2 content was 0.27%. After a clean-up period, the well was flowed for 26 hours followed by a 25 hours build-up. At the end of the flow, the measured flow rate was 950 Sm3/day through an 11.1 mm choke at a wellhead pressure of 132 bar.DST 3 tested the interval 2401 - 2414 m in the Etive Formation in order to investigate reservoir heterogeneities. The initial pressure and temperature at the top perforation was 362 bar and 89 deg C. Oil with a GOR of 47 Sm3/Sm3 was produced. The gas gravity was 0.71 (air = 1) and the CO2 content was 0.28%. After a clean-up period, the well was flowed for 25 hours followed by a 24 hours build-up period. At the end of the flow, the measured flow rate was 1310 Sm3/day through a 12.7 mm choke at a wellhead pressure of 159 bar. -
Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligDSTDST22454.002458.00OIL30.09.1990 - 09:25YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet31210661083127213081514156116791679173518621862215123802380238723912391243525152515260426612686282129452945 -
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]pdf13.67 -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.024542458111.02.02401241412.73.0282128370.0Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.013.20036.600902.015.90036.200893.0102Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.0950522500.8600.710552.01310620400.8600.710473.0 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL VDL GR19002684CDL CNL GR26842977DIFL ACL GR26842977DIPLOG26862978FMT28322943MWD - GR RES DIR TEMP27012980VELOCITY8503000 -
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 formasjonstestLINER72976.08 1/22980.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling3621.5521.09.0WATER BASED07.09.199024001.6816.022.0DUMMY30.06.199424001.6817.022.0DUMMY01.07.199424001.4520.013.0DUMMY04.07.199424001.6827.023.0DUMMY04.07.199424001.5317.017.0DUMMY04.07.199426861.6537.014.0WATER BASED14.09.199026861.6534.013.0WATER BASED18.09.199026861.6528.015.0WATER BASED08.10.199026861.6729.015.0WATER BASED15.10.199026861.6539.018.0WATER BASED18.09.199026861.6539.020.0WATER BASED18.09.199026861.6536.017.0WATER BASED21.09.199026861.6539.018.0WATER BASED21.09.199026861.6539.020.0WATER BASED21.09.199026861.6534.012.0WATER BASED25.09.199026861.6533.013.0WATER BASED25.09.199026861.6542.022.0WATER BASED25.09.199026861.6533.018.0WATER BASED25.09.199026861.6533.018.0WATER BASED26.09.199026861.6536.021.0WATER BASED28.09.199026861.6536.019.0WATER BASED02.10.199026861.6536.021.0WATER BASED02.10.199026861.6536.021.0WATER BASED02.10.199026861.6536.017.0WATER BASED03.10.199026861.6529.014.0WATER BASED05.10.199026861.6528.016.0WATER BASED05.10.199026861.6529.014.0WATER BASED08.10.199026861.6528.015.0WATER BASED08.10.199026861.6528.014.0WATER BASED10.10.199026861.6528.014.0WATER BASED11.10.199026861.6528.014.0WATER BASED11.10.199026861.67WATER BASED16.10.199026861.67WATER BASED16.10.199026861.6526.020.0WATER BASED16.10.199028851.6554.014.0WATER BASED14.09.199028851.6554.014.0WATER BASED13.09.1990 -
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]pdf0.22