Generell informasjon Attributt VerdiBrønnbane navn1/5-2TypeEXPLORATIONFormålWILDCATStatusP&AFaktakart i nytt vinduHovedområdeNORTH SEAFeltFunnBrønn navn1/5-2Seismisk lokaliseringLINE PG 56 3445 SP.32Boret i utvinningstillatelseBoreoperatørPhillips Petroleum Company NorwayBoretillatelse100-LBoreinnretningBore dager179Borestart19.10.1973Boreslutt15.04.1974Frigitt dato15.04.1976Publiseringsdato01.01.2010Opprinnelig formålWILDCATGjenåpnetNOInnholdOILFunnbrønnbaneYES1. nivå med hydrokarboner, alderPALEOCENE1. nivå med hydrokarboner, formasjon.FORTIES FM2. nivå med hydrokarboner, alderCAMPANIAN2. nivå med hydrokarboner, formasjonHOD FM3. nivå med hydrokarboner, alderCAMPANIAN3. nivå med hydrokarboner, formasjonTOR FMAvstand, boredekk - midlere havflate [m]27.0Vanndybde ved midlere havflate [m]70.0Totalt målt dybde (MD) [m RKB]4287.0Totalt vertikalt dybde (TVD) [m RKB]4287.0Maks inklinasjon [°]2Eldste penetrerte alderLATE PERMIANEldste penetrerte formasjonZECHSTEIN GPGeodetisk datumED50NS grader56° 34' 41.59'' NØV grader2° 38' 30.53'' ENS UTM [m]6270633.90ØV UTM [m]477994.36UTM sone31NPDID for brønnbanen238
BrønnhistorieGeneralThe Flyndre well (1/5-2) was drilled on a structural high situated in the Feda Graben of the North Sea close to the UK border. The principle objective horizons were the Paleocene and Jurassic sand sections which had produced oil in the UK 30/13-2 well and the NO 2/7-3 wells. It was estimated that at Paleocene depth the structure was an irregular dome about 4 miles in diameter, with 12 square miles of closure and 290 ft (88.4 m) of vertical relief while at Jurassic depth the structure was a NW-SE trending anticline 4.5 miles by 3.5 miles with 12 square miles of closure at 190 ft (57.9 m) of vertical relief. Planned TD was 15000 ft (4572 m), Triassic sands, or the Zechstein Group, whichever came first.Operations and resultsWell 1/5-2 was spudded on 19 October 1973, 15 m away from the original Flyndre well 1/5-1, which was junked at 491 m for technical reasons. Well 1/5-2 was drilled with the semi-submersible installation Ocean Viking. Total depth was set at 4287 m in Late Permian Zechstein salt. The well was drilled with seawater and hi-vis pills down to 494 m. The rest of the well was drilled with lignosulphonate mud.The well had shows throughout the Paleocene and Late Cretaceous sections and four drill-stem tests were carried out.The top sand in Paleocene at 2832 m (Forties Formation sand) produced oil upon testing. Mud log shows were present in the Danian, but testing proved the section to be tight and unproductive. A thick Late Cretaceous section was encountered with oil shows at the top of the Maastrichtian (Tor Formation) and in the Campanian (Lower Tor and Hod Formation) sections. Drill-stem tests were carried out in these zones and the Maastrichtian zone produced oil from fractured limestone at 3151.6 - 3174.2 m while the lower zone from 3337.6 - 3363.2 m was tight with only minor amounts of oil being recovered. The Early Cretaceous section, 281 m thick, consisted of sediments of Albian/Aptian and Barremian age. There were no shows in this section. The Jurassic, section was encountered at 4203 m but contained only 24 m of Kimmeridgian shale. The Kimmeridgian rested directly upon the Zechstein Group at 4228 m.No cores were cut and no wire line fluid samples were taken.The well was permanently abandoned on 15 April October 1974 as an oil discovery.TestingFour intervals were perforated and tested.DST I tested the interval 3337.6 - 3363.2 m in the lower Hod and upper Tor Formations produced a total of 5.6 Sm3 oil and 17.5 m3 of water. The oil gravity was 35 deg API.DST II tested the interval 3151.6 - 3174.2 m in the Tor Formation produced 501 Sm3 oil, 180661 Sm3 gas, and 49 m3 water /day through a 54/64" choke. The GOR was 361 Sm3/Sm3 and the oil gravity was 42 deg API.DST III tested the interval 3076.7 - 3102.9 m in the Ekofisk Formation produced total 30- 40 m3 water with 6 - 20% oil.DST IV tested the interval 2831.6 - 2841.3 m in the Forties Formation. It produced 37 sm3 oil, 16707 Sm3 gas, and 24 m3 water /day. The GOR was 456 Sm3/Sm3 and the oil gravity was 42.6 deg API.
Borekaks i OD
Borekaks i ODBorekaks tilgjengelig for prøvetaking?NO Borekaks i ODBorekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]563.884282.44
Palynologiske preparater i OD
Palynologiske preparater i ODPrøve dybdeDybde enhetPrøve typeLaboratorie2401.0[m]DCRRI2448.0[m]DCRRI2466.0[m]DCRRI2484.0[m]DCRRI2502.0[m]DCRRI2521.0[m]DCRRI2539.0[m]DCRRI2557.0[m]DCRRI2576.0[m]DCRRI2585.0[m]DCRRI2594.0[m]DCRRI2612.0[m]DCRRI2630.0[m]DCRRI2649.0[m]DCRRI2667.0[m]DCRRI2704.0[m]DCRRI2737.0[m]DCRRI2740.0[m]DCRRI2758.0[m]DCRRI2777.0[m]DCRRI2795.0[m]DCRRI2813.0[m]DCRRI2832.0[m]DCRRI2850.0[m]DCRRI2868.0[m]DCRRI2886.0[m]DCRRI2905.0[m]DCRRI2923.0[m]DCRRI2941.0[m]DCRRI2960.0[m]DCRRI2978.0[m]DCRRI2996.0[m]DCRRI3014.0[m]DCRRI3033.0[m]DCRRI3048.0[m]DCRRI3066.0[m]DCRRI3885.0[m]DCRRI4173.0[m]DCRRI4191.0[m]DCRRI
Spleisede loggerDokument navnDokument formatDokument størrelse [KB]0.40
Dokumenter – eldre OD WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre OD WDSS rapporter og andre relaterte dokumenterDokument navnDokument formatDokument størrelse [KB]0.16
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Borestrengtester (DST)Test nummerFra dybde MD
[m]Til dybde MD
Borestrengtester (DST)Test nummerEndelig avstengningstrykk
Borestrengtester (DST)Test nummerOlje produksjon
[g/cm3]Gasstyngde rel. luftGOR
LoggerType loggTopp dyp for logg [m]Bunn dyp for logg [m]BCS GR155314055DLL895013029FDC900013029IES155314035MLL ML995813028SNP995813029
Foringsrør og formasjonsstyrketester
Foringsrør og formasjonsstyrketesterType utforingUtforing diam.
[m]LOT/FIT slam eqv.
[g/cm3]Type formasjonstestCONDUCTOR30133.036133.00.00LOTSURF.COND.20475.026482.00.00LOTINTERM.13 3/81213.017 1/21229.00.00LOTINTERM.9 5/83039.012 1/43048.00.00LOTLINER73971.08 1/23973.00.00LOTOPEN HOLE4285.064285.00.00LOT
BoreslamDybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling1301.05seawater9141.3140.0water based18281.3150.0water based24381.5555.0water based30481.6755.0water based34381.5555.0water based35051.6755.0water based