30/2-3
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Generell informasjon
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Brønnhistorie
GeneralWell 30/2-2 was drilled on the Huldra Field in the North Sea. The objective was to appraise the gas/condensate discovery in the Brent Group and reduce the gas-in-place estimates for the field.Operations and resultsAppraisal well 30/2-2 was spudded with the semi-submersible installation Ross Isle on 11 June 1992 and drilled to TD at 4325 m in the Early Jurassic Eiriksson Formation. A pilot hole was drilled to 520 m to check for shallow gas. No gas was detected. Drilling proceeded without significant problems. Tool sticking was common in the reservoir section during logging runs. The well was drilled with seawater down to 209 m, with gel spud mud from 209 m to 1115 m, with gypsum/polymer mud from 1115 m to 2298 m, and with Ancotherm mud from 2298 m to TD.Although a well-defined Gas-Water-contact was encountered in 30/2-3 at 3896 m, this was some 75 m shallower than the previously deepest gas-down-to for well 30/2-2. This indicates that the Huldra Field is more complex than previously thought. Good porosity and permeability were encountered in all gas bearing intervals, reducing uncertainties regarding well productivity. There were no shows above Brent reservoir level. Below the GWC weak shows on sandstone in the cores gradually diminished down to 3962 m where shows disappeared altogether.A total of 178.4 m core was recovered in 17 cores, from 3749 m in the Heather Formation through all of the Brent Group and down to 3985 m at top Drake Formation. The core-to-log depth correction varied between -0.4 to +1.9 m. No wire line fluid samples were taken.The well was permanently abandoned on 5 October 1992 as a gas/condensate appraisal well.TestingThree drill stem tests were performed in the Brent Group.DST 1 tested the interval 3895 - 3898 m in the Ness Formation. The average production rates towards the end of the Cleanup/ Main Flow period were approximately 43000 Sm3/d of gas, 24 Sm3/d of condensate and 129 Sm3/d of formation water. This proved a GWC in the tested interval. The condensate density was 0.810 g/cm3 and the gas gravity was 0.720 (air =1). The temperature at reference depth 3895 m was 149.0 °C.DST 2 tested the interval 3874 - 3881 m in the Ness Formation. The average gas and condensate production rates during the Main Flow were 671000 Sm3/d and 319 Sm3/d respectively through a 12.7 mm (32/64") choke size. This gave a GOR close to 2100 Sm3/Sm3 at the prevailing separator conditions. The condensed or dissolved water production was approx. 6-8 m3/d. The condensate density was 0.0.800 g/cm3 and the gas gravity was 0.700 (air =1). DST 2 confirmed very good reservoir properties in the tested interval. The temperature at reference depth 3895 m was 147.5 °C.DST 3 te3sted the interval 3794 -3803 m in the Tarbert Formation. The average gas and condensate production rates during the Main Flow were 466800 Sm3/d and 215 Sm3/d respectively through a 12.7 mm (32/64") choke size. This gave a GOR of approx. 2170 Sm3/Sm3 at the prevailing separator conditions. The condensed or dissolved water production was approx. 4-6 m3/d. The condensate density was 0.0.797 g/cm3 and the gas gravity was 0.0.690 (air =1). DST 3 confirmed moderate reservoir properties in the tested interval. The temperature at reference depth 3895 m was 146.0 °C. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]1120.004323.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet13749.03755.9[m ]23756.03761.1[m ]33792.03813.3[m ]43816.03829.1[m ]53830.03836.3[m ]63836.33855.0[m ]73855.13867.0[m ]83868.03873.9[m ]93857.03886.5[m ]103886.53897.0[m ]113897.73915.0[m ]123915.63928.0[m ]133928.13932.0[m ]153954.53962.0[m ]163962.03968.8[m ]173968.83986.0[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]194.4Borekjerner 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 tilgjengeligDSTDST13895.000.0009.09.1992 - 01:00YESDSTDST23874.000.0015.09.1992 - 22:00YESDSTDST33794.000.0023.09.1992 - 13:00YES -
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 formasjonstestCONDUCTOR30205.036206.00.00LOTINTERM.201099.0261100.01.70LOTINTERM.13 3/82283.017 1/22285.01.91LOTINTERM.9 5/83706.012 1/43708.02.05LOTLINER74088.08 1/24325.00.00LOT -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.03895389812.72.03874388112.73.13794380312.7Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.04.0002.053.00040.0003.114.000Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.02443000.8100.72017902.03196710000.8000.70021003.12154668000.7970.6902180 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL VDL GR16502283CBL VDL GR29723692CBL VDL GR35504041CST GR11182227CST GR37083952CST GR37173722DIL BHC MSFL GR37064323DIL SLS GR CAL10993723DLL GR37063875FMS GR37064000LDL CNL GR22803722LDL CNL NGT37064325MWD2094325RFT HP GR37974317VSP17804324 -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet145815879879193619362011207721852185243834193543359935993620364236723672370937923792380839343944397439833983416141994241428842884294 -
Geokjemisk informasjon
Geokjemisk informasjon Dokument navnDokument formatDokumentstørrelse [MB]pdf0.54pdf3.15pdf1.15pdf1.93 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf22.86 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.60pdf0.24 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling5201.03WATER BASED7561.03WATER BASED10991.03WATER BASED11151.03WATER BASED15971.3935.0WATER BASED22981.5942.0WATER BASED23011.6433.0WATER BASED23461.6735.0WATER BASED26041.7540.0WATER BASED27421.7532.0WATER BASED28591.7536.0WATER BASED28941.7837.0WATER BASED29731.7838.0WATER BASED30441.7836.0WATER BASED31491.7836.0WATER BASED32841.7830.0WATER BASED35451.8228.0WATER BASED35601.8228.0WATER BASED37231.8537.0WATER BASED37231.8537.0WATER BASED37271.8527.0WATER BASED37491.8526.0WATER BASED37561.8526.0WATER BASED37911.8743.0WATER BASED37921.8930.0WATER BASED37931.85DUMMY38161.85DUMMY38301.87DUMMY38551.8732.0WATER BASED38861.8730.0WATER BASED39111.8732.0WATER BASED39531.8733.0WATER BASED39681.8729.0WATER BASED40111.8726.0WATER BASED40911.8727.0WATER BASED43251.8618.0WATER BASED43251.8717.0WATER BASED -
Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie1130.0[m]DCGEOST1160.0[m]DCGEOST1190.0[m]DCGEOST1210.0[m]DCGEOST1230.0[m]DCGEOST1300.0[m]DCGEOST1342.0[m]DCGEOST1354.0[m]DCGEOST1420.0[m]DCGEOST1447.0[m]DCGEOST1477.0[m]DCGEOST1492.0[m]DCGEOST1501.0[m]DCGEOST1516.0[m]DCGEOST1528.0[m]DCGEOST1543.0[m]DCGEOST1558.0[m]DCGEOST1564.0[m]DCGEOST1579.0[m]DCGEOST1600.0[m]DCGEOST1645.0[m]DCGEOST1660.0[m]DCGEOST1675.0[m]DCGEOST1702.0[m]DCGEOST1759.0[m]DCGEOST1783.0[m]DCGEOST1804.0[m]DCGEOST1825.0[m]DCGEOST1846.0[m]DCGEOST1858.0[m]DCGEOST1882.0[m]DCGEOST2191.0[m]DCGEOST2257.0[m]DCGEOST2278.0[m]DCGEOST2296.0[m]DCGEOST2320.0[m]DCGEOST2340.0[m]DCGEOST2360.0[m]DCGEOST2380.0[m]DCGEOST2400.0[m]DCGEOST2420.0[m]DCGEOST2440.0[m]DCGEOST2460.0[m]DCGEOST2480.0[m]DCGEOST2500.0[m]DCGEOST2520.0[m]DCGEOST2540.0[m]DCGEOST2560.0[m]DCGEOST2580.0[m]DCGEOST2600.0[m]DCGEOST2620.0[m]DCGEOST2640.0[m]DCGEOST2660.0[m]DCGEOST2680.0[m]DCGEOST2700.0[m]DCGEOST2720.0[m]DCGEOST2740.0[m]DCGEOST2770.0[m]DCGEOST2780.0[m]DCGEOST2800.0[m]DCGEOST2820.0[m]DCGEOST2840.0[m]DCGEOST2860.0[m]DCGEOST2880.0[m]DCGEOST2900.0[m]DCGEOST2920.0[m]DCGEOST2940.0[m]DCGEOST2960.0[m]DCGEOST2980.0[m]DCGEOST3000.0[m]DCGEOST3020.0[m]DCGEOST3040.0[m]DCGEOST3060.0[m]DCGEOST3080.0[m]DCGEOST3100.0[m]DCGEOST3120.0[m]DCGEOST3140.0[m]DCGEOST3160.0[m]DCGEOST3180.0[m]DCGEOST3200.0[m]DCGEOST3220.0[m]DCGEOST3240.0[m]DCGEOST3260.0[m]DCGEOST3280.0[m]DCGEOST3300.0[m]DCGEOST3320.0[m]DCGEOST3340.0[m]DCGEOST3360.0[m]DCGEOST3380.0[m]DCGEOST3400.0[m]DCGEOST3420.0[m]DCGEOST3520.0[m]DCGEOST3540.0[m]DCGEOST3560.0[m]DCGEOST3580.0[m]DCGEOST3600.0[m]DCGEOST3618.0[m]DCGEOST3624.0[m]DCGEOST3627.0[m]DCGEOST3636.0[m]DCGEOST3645.0[m]DCGEOST3654.0[m]DCGEOST3672.0[m]DCGEOST3681.0[m]DCGEOST3690.0[m]DCGEOST3699.0[m]DCGEOST3708.0[m]DCGEOST3708.5[m]SWCSTATO3717.0[m]SWCSTATO3717.0[m]DCGEOST3728.0[m]SWCSTATO3729.0[m]DCGEOST3735.0[m]SWCSTATO3738.0[m]DCGEOST3747.0[m]DCGEOST3749.5[m]CGEOST3758.5[m]CGEOST3765.0[m]DCGEOST3774.0[m]DCGEOST3783.0[m]DCGEOST3789.5[m]SWCSTATO3791.5[m]SWCSTATO3792.0[m]DCGEOST3792.5[m]SWCSTATO3794.8[m]CGEOST3804.6[m]CGEOST3807.7[m]CGEOST3812.0[m]CGEOST3821.7[m]CGEOST3830.2[m]CGEOST3837.3[m]CGEOST3845.2[m]CGEOST3852.2[m]CGEOST3860.0[m]CGEOST3867.0[m]CGEOST3875.7[m]CGEOST3883.8[m]CGEOST3887.2[m]CGEOST3894.3[m]CGEOST3902.8[m]CGEOST3910.2[m]CGEOST3919.3[m]CGEOST3927.6[m]CGEOST3932.7[m]CGEOST3934.5[m]SWCSTATO3938.0[m]SWCSTATO3944.0[m]SWCSTATO3949.5[m]SWCSTATO3954.5[m]CGEOST3962.5[m]CGEOST3967.6[m]CGEOST3973.0[m]CGEOST3974.6[m]CGEOST3979.4[m]CGEOST3981.3[m]CGEOST3986.2[m]CGEOST3990.0[m]DCGEOST3999.0[m]DCGEOST4008.0[m]DCGEOST4017.0[m]DCGEOST4026.0[m]DCGEOST4035.0[m]DCGEOST4044.0[m]DCGEOST4053.0[m]DCGEOST4062.0[m]DCGEOST4071.0[m]DCGEOST4080.0[m]DCGEOST4095.0[m]DCGEOST4098.0[m]DCGEOST4107.0[m]DCGEOST4116.0[m]DCGEOST4128.0[m]DCGEOST4134.0[m]DCGEOST4146.0[m]DCGEOST4152.0[m]DCGEOST4161.0[m]DCGEOST4170.0[m]DCGEOST4179.0[m]DCGEOST4188.0[m]DCGEOST4197.0[m]DCGEOST4206.0[m]DCGEOST4215.0[m]DCGEOST4224.0[m]DCGEOST4233.0[m]DCGEOST4242.0[m]DCGEOST4251.0[m]DCGEOST4260.0[m]DCGEOST4269.0[m]DCGEOST4278.0[m]DCGEOST4287.0[m]DCGEOST4293.0[m]DCGEOST4299.0[m]DCGEOST4308.0[m]DCGEOST4317.0[m]DCGEOST4323.0[m]DCGEOST