25/5-2
Eksport: PDF
-
Generell informasjon
-
Brønnhistorie
GeneralWell 25/5-2 was designed to drill the Frøy structure, which is a NNE-SSW tilted Jurassic fault block located in the northeastern corner of block 25/5. The main objectives of the well were to prove the Southward continuity and extension of the Middle Jurassic reservoir, to determine the OWC in the Frøy Field, to test the productivity in the oil zone, and to test the injectivity in the water zone. The northern extension of the Frøy structure was drilled in 1977 by well 25/2-6 in a down dip position and proved limited oil shows in the Statfjord Formation. Wells 25/5-1 and 25/5-1 A were drilled in 1987 in the central part of the structure, and found oil in the Vestland Group sandstones.Operations and resultsWildcat well 25/5-2 was spudded with the semi-submersible rig West Vanguard on 18 April 1989 and completed 4 July 1989 at a depth of 3304 m in the Early Jurassic Drake Formation. Drilling went without problems to 2300 m where the bit became stuck after a wiper trip, and the string was backed of at 2231 m. A technical sidetrack was started from 2103 m. The string entered into the old hole, and a second sidetrack was started from 2070 m. Below the 9 5/8" casing at 3066 m BSX mud, based on seawater with added NACl and polymers, was used. The MWD measurements showed no indication of shallow gas. The Vestland Group, Hugin Formation, came in at 3186 m, 67 m deeper than expected. Hydrocarbons were encountered at the top reservoir with the oil water contact at 3198 m (3176 m TVD MSL), which is 50 m deeper than the estimated OWC in well 25/5-1 A. Still, RFT Pressure measurements in the oil column indicate pressure communication with the oil column in well 25/5-1. A total of 4 cores were cut down to 3226 m. The well was plugged and abandoned as an oil appraisal well.TestingTwo drill stem tests where performed. Test 1 was a production and injection test in the Middle Vestland Group water zone from 3222 m to 3228 m. In the first attempt, DST 1A, scaling precipitated and blocked the jet pump when seawater came in contact with formation water. In the second attempt, DST 1B, injection was achieved using treated seawater. Test 2 was a production test at the oil/water contact in the interval 3196 m to 3201 m. This interval produced water and oil at maximum rates 56 m3/day and 202 Sm3/day, respectively. The oil was produced with a GOR of 168 Sm3/Sm3. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]220.003304.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet13176.03194.0[m ]23194.03196.7[m ]33197.03215.2[m ]43215.23226.5[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]50.2Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
-
Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie2160.0[m]DCPETROSTR2170.0[m]DCPETROS2180.0[m]DCPETROS2190.0[m]DCPETROS2200.0[m]DCPETROS2210.0[m]DCPETROS2220.0[m]DCPETROS2230.0[m]DCPETROS2240.0[m]DCPETROS2250.0[m]DCPETROS2260.0[m]DCPETROS2270.0[m]DCPETROS2280.0[m]DCPETROS2290.0[m]DCPETROS2300.0[m]DCPETROS2310.0[m]DCPETROS2320.0[m]DCPETROS2330.0[m]DCPETROS2340.0[m]DCPETROS2350.0[m]DCPETROS2360.0[m]DCPETROS2370.0[m]DCPETROS2380.0[m]DCPETROS2390.0[m]DCPETROS2400.0[m]DCPETROS2410.0[m]DCPETROS2420.0[m]DCPETROS2430.0[m]DCPETROS2440.0[m]DCPETROS2450.0[m]DCPETROS2460.0[m]DCPETROS2470.0[m]DCPETROS2480.0[m]DCPETROS2490.0[m]DCPETROS2500.0[m]DCPETROS2510.0[m]DCPETROS2520.0[m]DCPETROS2530.0[m]DCPETROS2540.0[m]DCPETROS2550.0[m]DCPETROS2560.0[m]DCPETROS2570.0[m]DCPETROS2580.0[m]DCPETROS2590.0[m]DCPETROS2600.0[m]DCPETROS2610.0[m]DCPETROS2620.0[m]DCPETROS3179.7[m]CAPT3179.8[m]COD3180.0[m]CAPT3180.1[m]CAPT3180.5[m]COD3180.5[m]CAPT3180.6[m]CAPT3180.9[m]CAPT3181.5[m]CAPT3181.8[m]CAPT3185.4[m]CAPT3186.6[m]COD3187.8[m]CAPT3188.9[m]CAPT3189.1[m]CAPT3189.9[m]CAPT3190.2[m]CAPT3190.5[m]COD3192.4[m]CAPT3195.3[m]CAPT3195.5[m]COD3195.5[m]CAPT3196.0[m]CAPT3196.4[m]CAPT3196.5[m]CAPT3197.4[m]COD3197.5[m]CAPT3197.9[m]CAPT3198.8[m]CAPT3201.6[m]CAPT3201.9[m]COD3202.2[m]CAPT3202.9[m]COD3203.0[m]CAPT3203.5[m]CAPT3205.6[m]CAPT3205.6[m]COD3206.9[m]CAPT3207.3[m]COD3208.9[m]CAPT3209.7[m]CAPT3210.4[m]CAPT3210.8[m]CAPT3210.9[m]COD3211.0[m]CAPT3211.9[m]CAPT3212.4[m]CAPT3212.8[m]COD3213.4[m]CAPT3213.9[m]COD3216.0[m]CAPT3216.4[m]COD3216.5[m]CAPT3217.9[m]CAPT3219.9[m]COD3221.6[m]CAPT3221.6[m]CAPT3221.8[m]CAPT3222.2[m]CAPT3222.7[m]COD3223.4[m]CAPT3224.3[m]CAPT3224.9[m]CAPT3224.9[m]COD3225.2[m]CAPT3225.6[m]CAPT3225.7[m]CAPT3226.0[m]CAPT3226.2[m]CAPT3226.5[m]CAPT3226.5[m]COD -
Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligDSTDST23196.003201.0027.06.1989 - 00:00YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet13947055570070010921388144821602160222222922502260726302630285529802980299030083008313131863186319432313231 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.43 -
Geokjemisk informasjon
-
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.26pdf0.16 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf16.35 -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]2.0319632019.5Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]2.0Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]2.0200350000.821170 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]AMS30663306CBL VDL GR16903262DIL GR SLS11863057DIS GR SLS30663306DLL MSFL GR SP30663302EVA30653307FMS GR30663306HP RFT GR31883226LDL CNL NGS30663306LDL GR11863047MWD1393304SHDT GR11863058VSP12203240 -
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 formasjonstestCONDUCTOR30212.036212.00.00LOTINTERM.13 3/81185.017 1/21200.01.85LOTINTERM.9 5/83062.012 1/43077.01.81LOTLINER73304.08 1/23304.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling2121.08WATER BASED21.04.19898881.08WATER BASED24.04.198914671.0916.010.2WATER BASED26.04.198917411.1315.011.2WATER BASED27.04.198920161.2544.017.6WATER BASED08.05.198920441.1318.013.7WATER BASED28.04.198921091.1317.012.7WATER BASED02.05.198921201.2531.015.6WATER BASED05.05.198921901.26363.010.7WATER BASED08.05.198922321.2534.014.7WATER BASED05.05.198922481.2735.012.2WATER BASED09.05.198923291.1521.013.7WATER BASED02.05.198924141.2735.015.1WATER BASED11.05.198925081.2733.016.1WATER BASED12.05.198927671.2632.014.7WATER BASED18.05.198927811.2635.015.6WATER BASED19.05.198929011.2729.013.7WATER BASED22.05.198929521.2631.012.7WATER BASED22.05.198930141.2632.014.7WATER BASED23.05.198930771.2633.015.1WATER BASED24.05.198930781.1120.015.1WATER BASED30.05.198931151.1117.016.6WATER BASED30.05.198931771.1218.017.6WATER BASED31.05.198931971.1320.017.6WATER BASED01.06.198932151.1321.017.6WATER BASED02.06.198932411.13181.016.6WATER BASED05.06.198933041.1321.018.6WATER BASED05.06.1989 -
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