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  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 391,
    "wlbName" : "30/10-1",
    "wlbHistory" : "\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 30/10-1 is located on the Northern\r\napex of the Frigg field. The well was drilled as a wildcat, primarily to\r\nevaluate the Lower Eocene sand ("Frigg Field Clastic Tongue") in the\r\narea. Secondly, the well should evaluate the Paleocene sands and the Late\r\nCretaceous limestone. The plan was to set the 9 5/8 inch casing in the top of a\r\nhigh-pressure zone (Cretaceous Shale) prior to moving the rig Saipem Due to\r\nanother location. The hole should then be re-entered with another rig and drill\r\ndeeper to evaluate a deep-seated structural closure. \u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 30/10-1 was spudded with the vessel\r\nSaipem Due on 5 May 1973 and drilled to TD at 2917 m in Late Cretaceous\r\n(Maastrichtian) shale. Initial drilling from the sea floor to 1067 m was with\r\nseawater and gel. Below 1067 m a fresh water Spersene XP 20 (lignosulphonate)\r\nmud system was used. \u003c/p\u003e\r\n\r\n\u003cp\u003eThe thickness of the pay section of the\r\nFrigg Clastic Tongue (Primary objective) was disappointing in that it was very\r\nthin. A green shale unit replaced the expected pay section. Formation interval\r\ntest and logs indicate that approximately 4 m of the Frigg Clastic sand\r\ncontained gas and approximately 6 m could possibly be oil bearing. No other\r\ngood hydrocarbon shows were encountered below the Frigg Clastic Tongue. in the rogaland Group almost\r\n200 m of sand were present, however, the sand was void of hydrocarbons,\r\nwith the exception of some scattered fluorescence in the upper portion. Five\r\ncores were cut in the Frigg sand in the interval 1974 m to 2010 m. No sidewall\r\ncores were taken. Four Formation Interval Tests (FITs) were taken in the Frigg\r\nsand. FIT No 1 at 1960.5 m recovered, 29 cubic feet of gas, 5 litres water and\r\n0.5 litres mud. FIT No. 2 at 1989.5 m recovered 10 litres water. FIT No. 3 at\r\n1974.5 m recovered 7 litres liquid (mud and water) and 100 cc oil. FIT No. 4 at\r\n1966 m recovered 6.5 cubic feet gas, 2.25 litres oil, 300 cc mud, and 4.75\r\nlitres of water. Oil g",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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