发明名称 Equipment for a drill string with a side entry sub and method for its use.
摘要 The invention comprises a secure anchoring device, of a cable, (4), on a support bracket, (1), and is characterised in that the anchoring mechanism, (8), comprises a body, (8a,8b), and a clamping element, (8c), which define a passageway for the said cable. This passageway has a variable cross-section over at least part of the length of the passage. The anchoring system, (8), is held on the inside of the support-bracket by releasable means of immobilisation, whilst the body, (8a,8b), interacts with the clamping element, (8c), to reduce the cross-section of the cable passageway (4). The anchoring system comprises at least one buttress-stop, (12), adapted to modify the said section by displacing the clamping element, (8c), with respect to the body, (8a,8b), in taking support, (1), on the surface, (13), of the element, and having a form such as to increase the section of the passageway, and to free the cable whilst the means of immobilisation free the anchoring system, and produce a sufficient movement of the body, with respect to the support.
申请公布号 EP0411260(A2) 申请公布日期 1991.02.06
申请号 EP19900109715 申请日期 1988.05.05
申请人 INSTITUT FRANCAIS DU PETROLE 发明人 WITTRISCH, CHRISTIAN
分类号 E21B17/02;E21B17/06;E21B23/01;E21B23/08;E21B23/14;E21B33/072 主分类号 E21B17/02
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