33/2-1
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Generell informasjon
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Brønnhistorie
GeneralWell 33/2-1 was drilled to test the Storm prospect on the Manet Ridge in the northern North Sea. The well is located ca 4.5 km south of the 6201/11-1 discovery well. The primary objective of 33/2-1 was to test the reservoir properties and hydrocarbon potential of Late Jurassic Draupne sandstones, an equivalent to the Magnus Formation. The secondary objective was to test the reservoir properties and HC potential of the possible Eocene sandstones. The TD criterion was to drill to approximately 50 m into Triassic sediments, with planned TD at 4524 m.Operations and resultsWildcat well 33/2-1 was spudded with the semi-submersible installation Transocean Arctic on 7 October 2014 and drilled to TD at 4459 m in the Late Triassic Raude Formation. No significant problem was encountered in the operations. The well was drilled with seawater and viscous sweeps down to 483.5 m, with KCl/glycol mud from 483.5 m to 1422 m, with Performadril water based mud from 1422 m to 2008 m, and with oil based mud from 2208 m to TD.The primary and the secondary objectives were not encountered. The well proved hydrocarbons (gas/condensate) in non-commercial quantities in two zones in this well. The Early Cretaceous Mime Formation had one meter net pay with HC in the interval 3935 to 3952 m, while the Early Jurassic Eiriksson Formation had 2.6 meter net pay with HC in the interval 4387 to 4411 m. In addition, oil shows were described on cuttings in an Eocene sandstone at 1821 m and in the Lista Formation from 2031 to 2058 m. Oil shows were described also on sidewall cores from the interval 3867 to 4449 m. The oil shows below 2208 m are uncertain, possibly affected by OBM.No cores were cut. MDT fluid samples were taken at 3943 m (OBM filtrate) and 4409.6 m (oil with 62% mud filtrate contamination). The samplings showed rather tight formations.The well was permanently abandoned on 26 December 2014 as a dry well with shows.TestingNo drill stem test was performed. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]490.004458.00 -
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 formasjonstestCONDUCTOR30483.036483.00.00PILOT HOLE1407.09 7/81407.00.00SURF.COND.201415.0261422.01.65LOTINTERM.13 3/82200.017 1/22208.01.78LOTINTERM.9 5/83807.212 1/23816.02.04LOTOPEN HOLE4459.08 1/24459.00.00 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]DSL CN ZDL38074458DSL XMAC ORIT HDIL WG33254458GR RCX FX39364407GR RCX FX39424457PCOR38674449 -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet4054051253128312831893189319451972210921092326391839353935395239524262426243264326438843884411 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling4231.0414.0Water Based4741.0414.0Water Based5481.3014.0Water Based5501.4014.0Water Based5781.3012.0Water Based6851.4014.0Water Based7131.3112.0Water Based8851.4014.0Water Based12601.5012.0Water Based16751.5521.0Water Based35051.8743.0Oil Based36291.6529.0Oil Based38161.9345.0Oil Based38161.6531.0Oil Based38221.8951.0Oil Based40181.8846.0Oil Based44591.8037.0Oil Based