34/10-15
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Generell informasjon
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Brønnhistorie
GeneralWell 34/10 15 was drilled as a wildcat on a horst block in the south-eastern part of the Gullfaks Field. The primary purpose of the well was to test hydrocarbon accumulations in the Jurassic and Brent sands. Secondary objectives were the Early Jurassic Statfjord sands and to test shallow gas accumulations in Pliocene sands.Operations and resultsAppraisal well 34/10-15 was spudded with the semi-submersible installation Neptuno Nordraug on 16 October 1982 and drilled to TD at 2400 m in Late Triassic sediments in the Statfjord Group. A 12 1/4” pilot hole was drilled from 250 m to 950 m to check for shallow gas. The well was situated ca 90 m south of the location for the well 34/10-10, which was abandoned due to gas flow from a gas filled sand at 428 m. The same sandlense was penetrated in the well 34/10-15 from 444-447 m. The well was drilled with spud mud down to 250 m and with gel/seawater/lignosulphonate mud from 250 m to TD.Weak shows on cuttings, mostly on limestone, were recorded intermittently from 1220 m in the Hordaland Group to 1630 m in the Lista Formation. The Brent Group sands were not encountered. Late Triassic Statfjord Group sands were found water wet without shows. The Cook Formation sands contained residual oil.Ten cores were cut. Cores 1 to 5 were cut from 1870 m to 1945 m in the Cook Formation with recoveries varying from 34% to 75%. Cores 6, 7, and 8 were cut from 2170 m to 2213 m in the Amundsen Formation with recoveries varying from 87% to 93%. Cores 9 and 10 were cut from 2301 m to 2323 m in the Statfjord Group with 90% and 85% recoveries, respectively. An RFT fluid sample was taken at 1875.5 m in the Cook Formation residual oil zone. The sample contained brown water and smelled oil.The well was permanently abandoned on 12 December 1982 as a dry well with shows.TestingA shallow gas test was planned from the interval 444 m to 447 m. The purpose of this test was to gather information about whether the gas would flow to surface and if the sandlense could be drained. The test was cancelled due to problems in cutting the 13 3/8" casing deep enough to allow for perforations in the 20" casing in the test interval. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]250.002399.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet11870.01879.5[m ]21888.01897.0[m ]31900.01905.7[m ]41917.01923.0[m ]51935.01940.7[m ]62170.02187.0[m ]72187.52199.8[m ]82201.02211.4[m ]92301.02314.8[m ]102316.52322.0[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]94.9Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie1865.0[m]SWCPAS2002.0[m]SWCPAS2043.0[m]SWCPAS2100.0[m]SWCPAS -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet1899039181515151515681687182718271870203420492213 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.18pdf0.20 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf2.84pdf23.12pdf4.44pdf1.69pdf4.85pdf0.91pdf0.29pdf0.11pdf0.09 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL VDL BI6441737DLL MSFL NGS17521988GEODIP18652404HDT17372405ISF SON GR MSFL2492400NGS17522400VSP2532400 -
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 formasjonstestCONDUCTOR30249.036249.00.00LOTSURF.COND.20940.026950.01.57LOTINTERM.13 3/81564.017 1/21579.01.80LOTINTERM.9 5/81736.012 1/41750.02.07LOTOPEN HOLE2400.08 1/22400.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling2601.04waterbased9651.08waterbased14151.26waterbased15101.42waterbased16701.68waterbased20801.81waterbased -
Tynnslip i Sokkeldirektoratet
Tynnslip i Sokkeldirektoratet DybdeEnhet1936.00[m ]1923.00[m ]1903.00[m ]1895.00[m ]1889.00[m ]1870.00[m ] -
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]pdf0.21