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    "wlbNpdidWellbore" : 348,
    "wlbName" : "24/12-2",
    "wlbHistory" : "\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWildcat well 24/12-2 is located in the Vana Sub-basin in the Southern Viking Graben, about 11 km east of the border to British\r\nsector. The well was drilled on structure (Alpha) in the northeastern part of\r\nthe block. Target was Late Jurassic sandstones.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well is Reference well for the Sola\r\nand Grid Formations\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 24/12-2 was spudded with the\r\nsemi-submersible installation Dyvi Delta on 23 June 1981 and drilled to TD at\r\n5100 m in the Late Jurassic Heather Formation. Operations on both 36" and\r\n26" sections went smooth. During drilling of the 17 1/2" section the\r\ndrill pipe broke off at 2044 m. This was recovered and drilling continued to\r\n2445 m. One stand was left in the hole at this depth and fishing was unsuccessful.\r\nBoth fish and open hole were cemented up to 2160 and the well was sidetracked\r\nfrom 2220 m. After setting the 13 3/8" at 2886 m casing the Kelly bushing\r\nelevation was changed from 32 m to 30 m. The 8 1/2" hole was drilled to\r\n4306 m when a 21-day strike occurred. The well was drilled with seawater and\r\ngel down to 1005 m, with gypsum / lime / polymer from 1005 m to 2866 m, and\r\nwith a Spersene / XP-20 / Resinex mud from 2886 m to TD. \u003c/p\u003e\r\n\r\n\u003cp\u003eTertiary sandstones were encountered in\r\nthe Grid Formation (1282 m to 1397 m), the Heimdal Formation (2202 m to 2407\r\nm), and the Ty Formation (2567 m to 2617 m). The main target Late Jurassic\r\nsandstones were found (Intra Heather Sandstone Formation) in the intervals 4739\r\nm to 4749 m and 4955 m to 4978 m. These sands had poor reservoir properties.\r\nOil shows were recorded in the Heimdal Formation. Ca 380 m of Draupne Formation\r\nwas penetrated by this well. The dark shales in this formation had TOC\r\ntypically in the range 4 % to 7 %, but with relatively low Hydrogen Index (50 to\r\n110 mg/g HC). The Kerogen in the shales appeared to be mostly type III with\r\nsome Type II towards the top. Measured vitrinite reflectance varies somewhat\r\nbe",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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