{
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      "title" : "The collection document"
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  "LayerId" : 254,
  "LayerName" : "Wellbore - History",
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    "wlbNpdidWellbore" : 189,
    "wlbName" : "16/5-1",
    "wlbHistory" : "\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 16/5-1 is located on the Utsira High\r\nin the North Sea. The main target of the 16/5-1 well ("Vali") was a\r\npinch-out of Paleocene sands on a seismic monoclinal. The interest in this trap\r\nwas emphasized by oil-shows in Paleocene sands in surrounding wells.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eOperations and results\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWildcat well 16/5-1 was spudded with the\r\nsemi-submersible installation Pentagone 81 on 17 January 1971 and drilled to TD\r\nat 1943 m in granitic basement rocks. The well was drilled using seawater-based\r\nmud.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe Paleocene sands, which were the main\r\nobjective of the Vali well, were not present. A thin Cretaceous series was\r\nfound directly overlaying Caledonian basement rocks. From 1923 m to TD the well\r\npenetrated migmatitic granite, highly fractured and slightly weathered down to\r\n1940 m. No shows were recorded, only background gas of C1 from1% to 3 % while\r\ndrilling the tertiary series. The only reservoirs encountered in Vali well were\r\n164 m net sand in the sand-shale sequence in the Utsira Formation from 754 m to\r\n1012 m. These sands, very fine to medium and shelly, have very high porosity,\r\nmore than 32 %. However, they are not sufficiently buried to form a trap and\r\nthey were water wet. Two cores were cut: the first from 1573 to 1584 m in the\r\nSele and Lista Formations, 15 m below the cinerites, and the second from 1929\r\nto 1943 m in the basement rocks. No fluid samples were attempted. The well was\r\npermanently abandoned as a dry well on 8 February 1971.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eTesting\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eNo drill stem test was performed\u003c/p\u003e\r\n\r\n\r\n",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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}