{
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    "wlbNpdidWellbore" : 127,
    "wlbName" : "31/6-6",
    "wlbHistory" : "\r\n\u003cp\u003e\u003cb\u003eGeneral\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eWell 31/6-6 was drilled in the Troll East\r\ngas province. It was designed to test possible gas accumulations in the Late to\r\nMiddle Jurassic sandstones and to test the quality of a reservoir siltstone in\r\nthe Heather Formation.\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 31/6-6 was spudded with the\r\nsemi-submersible installation Deepsea Bergen on 22 May 1984 and drilled to TD\r\n2293 m in the Late Triassic Hegre Group. No significant problem was encountered\r\nin the operations. The well was drilled with spud mud down to 716 m, with\r\nKCl/polymer mud from 716 m to 1771.5 m, and with pre-hydrated bentonite/CMC mud\r\nfrom 1771.5 m to TD. \u003c/p\u003e\r\n\r\n\u003cp\u003eThe well encountered gas from top Heather\r\nreservoir at 1516 m to a GWC at 1568.5 m, 7.5 m into the Sognefjord Formation.\r\nNo oil shows were reported from the well. Nine conventional cores were cut in\r\nthe interval 1525 m to 1771.5 m in the Middle to Late Jurassic. FMT samples\r\nwere taken at 1571.8 m and 1576.5 m in the Sognefjord Formation. Both contained\r\nformation water and mud filtrate.\u003c/p\u003e\r\n\r\n\u003cp\u003eThe well was completed on 29 July 1984 as\r\na gas appraisal.\u003c/p\u003e\r\n\r\n\u003cp\u003e\u003cb\u003eTesting\u003c/b\u003e\u003c/p\u003e\r\n\r\n\u003cp\u003eTwo drill stem tests were performed in\r\nthe well. DST 1A tested 1562 m to 1567.5 m in the Sognefjord Formation\r\nsandstone. It produced maximum 779 x 10 Sm3 gas /day on a 64/64" choke. DST\r\n2 from 1523 m to 1536 m in the Heather Formation siltstone showed a very low\r\nproduction rate, 10.7 x 10 Sm3/day. The reservoir temperature was 62.5 deg. C\r\nin DST 1A and 58 deg. C in DST 2.\u003c/p\u003e\r\n\r\n\r\n\r\n",
    "wlbHistoryDateUpdated" : "2026-02-24T00:00:00"
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