7220/7-3 S
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Generell informasjon
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Brønnhistorie
GeneralWell 7220/7-3 S was drilled to test the Drivis prospect on the Bjørnøyrenna Fault Complex in the Barents Sea, about 15 kilometres southwest of the 7220/8-1 Johan Castberg discovery. The primary exploration target was to prove petroleum in reservoir rocks from the Middle and Early Jurassic Age (the Stø and Nordmela formations). Flat spots at these levels were believed to be gas-oil and oil-water contacts. The secondary exploration target was to prove petroleum in reservoir rocks from the Late Triassic Age (the Fruholmen formation).Operations and resultsWildcat well 7220/7-3 S was spudded with the semi-submersible installation West Hercules on 28 February 2014 and drilled to TD at 2097 m (2059 m TVD) in the Late Triassic Fruholmen Formation. No shallow gas was observed even though a shallow gas warning Class 2 was given through the Tertiary Torsk Formation. TD of the 17 1/2" section was set shallower than planned due to stuck pipe. Otherwise, no significant problem was encountered in the operations. The well was drilled with seawater and sweeps down to 736 m and with KCl/GEM/Polymer mud from 736 m to TD.Top Stø Formation was encountered at 1448 m and top Nordmela Formation at 1525 m. There was a 68-metre gross gas column in the Stø Formation and an 86-metre gross oil column in the Stø and Nordmela formations. The GOC is at 1516 m and the OWC is at 1604 m. The reservoir quality in the Stø formation is very good. The reservoir quality in the Nordmela Formation is variable, but about half of the oil zone was encountered in sandstone with very good reservoir quality. Oil shows of variable quality are described from the OWC and down to 1766 in the Tubåen Formation. The Fruholmen Formation has poor reservoir properties, and is mostly water bearing, but petroleum was recovered in an MDT sample from 1952.2 m. In this petroleum, the gas and light oil components were less mature than in the oil in Nordmela, while the heavier fraction (C15+) was similar to the oil in Nordmela. There were also some oil shows in the interval 1907 to 1925 m in Nordmela.A total of 140.7 m core was recovered in two cores from the interval 1457 m to 1597.6 m in the Stø and Nordmela formations. The recovery was 100%. MDT fluid samples were taken at 1458 m (gas), 1545.5 m (oil), 1578 m (oil), 1609.5 m (water), and at 1952.2 m (oil).The well was permanently abandoned on 5 May 2014 as an oil and gas discovery.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]715.002096.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet11457.01527.4[m ]21527.41597.6[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]140.6Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie740.0[m]DCROBERTSO770.0[m]DCROBERT800.0[m]DCROBERT830.0[m]DCROBERT865.0[m]DCROBERT895.0[m]DCROBERT920.0[m]DCROBERT940.0[m]DCROBERT960.0[m]DCROBERT980.0[m]DCROBERT1000.0[m]DCROBERT1020.0[m]DCROBERT1040.0[m]DCROBERT1060.0[m]DCROBERT1080.0[m]DCROBERT1100.0[m]DCROBERT1120.0[m]DCROBERT1140.0[m]DCROBERT1160.0[m]DCROBERT1180.0[m]DCROBERT1200.0[m]DCROBERT1220.0[m]DCROBERT1240.0[m]DCROBERT1260.0[m]DCROBERT1280.0[m]DCROBERT1300.0[m]DCROBERT1320.0[m]DCROBERT1340.0[m]DCROBERT1360.0[m]DCROBERT1362.0[m]DCROBERT1380.0[m]DCROBERT1400.0[m]DCROBERT1406.0[m]DCROBERT1412.0[m]DCROBERT1424.0[m]DCROBERT1430.0[m]DCROBERT1436.0[m]DCROBERT1442.0[m]DCROBERT1448.0[m]DCROBERT1454.0[m]DCROBERT1457.5[m]CROBERT1463.3[m]CROBERT1469.8[m]CROBERT1474.1[m]CROBERT1480.1[m]CROBERT1486.4[m]CROBERT1489.5[m]CROBERT1496.8[m]CROBERT1502.0[m]CROBERT1508.6[m]CROBERT1514.3[m]CROBERT1520.5[m]CROBERT1526.5[m]CROBERT1530.6[m]CROBERT1536.2[m]CROBERT1542.3[m]CROBERT1548.7[m]CROBERT1551.8[m]CROBERT1555.3[m]CROBERT1562.4[m]CROBERT1567.7[m]CROBERT1574.4[m]CROBERT1581.8[m]CROBERT1586.4[m]CROBERT1589.9[m]CROBERT1595.7[m]CROBERT1597.5[m]CROBERT1604.0[m]DCROBERT1610.0[m]DCROBERT1616.0[m]DCROBERT1622.0[m]DCROBERT1628.0[m]DCROBERT1634.0[m]DCROBERT1640.0[m]DCROBERT1646.0[m]DCROBERT1652.0[m]DCROBERT1658.0[m]DCROBERT1664.0[m]DCROBERT1670.0[m]DCROBERT1679.0[m]DCROBERT1685.0[m]DCROBERT1691.0[m]DCROBERT1697.0[m]DCROBERT1706.0[m]DCROBERT1712.0[m]DCROBERT1718.0[m]DCROBERT1724.0[m]DCROBERT1730.0[m]DCROBERT1736.0[m]DCROBERT1742.0[m]DCROBERT1751.0[m]DCROBERT1757.0[m]DCROBERT1763.0[m]DCROBERT1769.0[m]DCROBERT1775.0[m]DCROBERT1781.0[m]DCROBERT1787.0[m]DCROBERT1793.0[m]DCROBERT1799.0[m]DCROBERT1814.0[m]DCROBERT1829.0[m]DCROBERT1844.0[m]DCROBERT1859.0[m]DCROBERT1874.0[m]DCROBERT1889.0[m]DCROBERT1904.0[m]DCROBERT1919.0[m]DCROBERT1934.0[m]DCROBERT1949.0[m]DCROBERT1967.0[m]DCROBERT1979.0[m]DCROBERT1994.0[m]DCROBERT2009.0[m]DCROBERT2024.0[m]DCROBERT2039.0[m]DCROBERT2054.0[m]DCROBERT2069.0[m]DCROBERT2084.0[m]DCROBERT2096.0[m]DCROBERT -
Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligMDT1543.300.00OIL23.09.2014 - 00:00YESMDT1952.200.00OIL23.09.2014 - 00:00YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet376376466466118011801402141714261448144815261710185818582026 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]ARCRES9 TELE428737CMR HRLA PEX ECS HNGS13591800FMI PPC1B MSIP PPC2B GR18771900MDT14581952MDT15451545MINIFRAC00PD ARC TELE SON ADN7371362PD RAB6 DVDM6 TELE675 VSONIC613622097TELE376427USIT CBL8941355VSP744744 -
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 formasjonstestCONDUCTOR36425.142428.00.00INTERM.13 3/8708.717 1/2736.01.26FITLINER9 5/81359.012 1/41400.01.65LOTOPEN HOLE2097.08 1/22097.00.00 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling7101.0615.0Spud Mud7301.1111.0KCl/Polymer/GEM7361.0611.0KCl/Polymer/GEM7361.069.0Spud Mud7371.1419.0KCl/Polymer/GEM8381.1218.0KCl/Polymer/GEM8471.1220.0KCl/Polymer/GEM10491.2327.0KCl/Polymer/GEM10581.1326.0KCl/Polymer/GEM13621.1220.0KCl/Polymer/GEM13971.2028.0KCl/Polymer/GEM14661.2328.0KCl/Polymer/GEM20961.2327.0KCl/Polymer/GEM