16/1-18
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Generell informasjon
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Brønnhistorie
GeneralWell 16/1-18 was drilled to appraise the Edvard Grieg Field on the Utsira High in the North Sea. The objective of the well was to delineate the southeastern part of the Edvard Grieg Field in order to optimise the drainage strategy and to determine the best possible location of production wells in this area.Operations and resultsA 9 7/8" pilot hole was drilled from seabed to 620 m to check for shallow gas. No shallow gas was seen. Appraisal well 16/1-18 was spudded with the semi-submersible installation Island Innovator on 24 February 2014 and drilled to TD at 2391 m in granitic basement rock. No significant problem was encountered in the operations. The well was drilled with spud mud down to 613 m and Aqua-Drill mud from 613 m to TD.No Jurassic sediments were penetrated in the well. BCU / Top Triassic, Hegre Group was encountered at 1894 m. A 62-metre gross oil column was found in conglomerate sandstone of the Hegre Group, where the top 43 metres have very good reservoir properties and the lower 19 metres have good reservoir quality. The oil/water contact was not encountered. Pressure points proved an oil gradient with the same density oil as in the rest of the Edvard Grieg Field, with an ODT at 1956 m. Oil shows were described on cores down to 1986 m. There were no shows above top reservoir level.A total of 95.6 m core was recovered in eight cores from the interval 1886 to 1986 m. MDT fluid samples were taken at 1894.9 m (oil), 1921.4 m (oil), 1954.5 m (oil), and 967.4 m (water).The well was permanently abandoned on 14 May 2014 as an oil appraisal well.TestingOne DST was conducted in a 13-metre interval from 1938.9 to 1959.6 m in the lower part of the oil column in reservoir of good quality. The main flow in the test produced 135 Sm3 oil and 12000 Sm3 gas /day through a 28/64" choke and showed good flow properties from the entire oil zone. The GOR was 88 Sm3/Sm3, the oil gravity was 0.83 g/cm3, and the gas gravity was 0.66 (air = 1). The temperature profile for the test extrapolated to an initial top reservoir temperature of 80.1 °C at 1938.9 m. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]620.002391.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet11886.01909.6[m ]21912.01916.7[m ]31920.01923.3[m ]41924.01930.6[m ]51932.01941.7[m ]61942.01960.2[m ]71960.21967.7[m ]81968.01986.0[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]91.6Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet1397578959739739781139125713061496158816461693169317021742182418401840186818781883188318851894189419852360 -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.01939195211.1Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.040Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.01351200088 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]DSL CN ZDL ORIT XMAC RTEX MLL17872387DSL FLEX MREX18302386DSL IFX RCX19672275DSL IFX RCX RSPS18951967DSL PCOR12651790DSL PCOR14101819DSL PCOR18512379DSL RCX7801669DSL UXPL ORIT STAR18302383DSL VSP5882380DSL XMAC ORIT STAR6071023MWD LWD - DIR GR RES SON139618MWD LWD - GR RES NEU DEN SON ECD6042391 -
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 formasjonstestCONDUCTOR30230.036234.00.00SURF.COND.20605.026613.01.62FITINTERM.9 5/81834.012 1/41847.01.50FITLINER72201.08 1/22391.00.00 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling2341.3915.0Water Based3171.2516.0Water Based3911.3920.0Water Based6131.3922.0Water Based6131.3217.0Water Based6181.3014.0Water Based11811.3226.0Water Based16601.359.0Water Based16761.1514.0Water Based17481.3532.0Water Based18471.3529.0Water Based18501.1722.0Water Based18891.1617.0Water Based19411.2017.0Water Based19691.1715.0Water Based20661.1419.0Water Based22021.141.0Brine22031.1524.0Water Based22031.1525.0Water Based22831.1418.0Water Based23911.1420.0Water Based