专利内容由知识产权出版社提供
专利名称：COUPLING FOR DRILL PIPES发明人：HALLUNDBAEK, Joergen申请号：EP920452.4申请日：19980414公开号：EP1071863A1公开日：20010131
摘要：In a coupling for cylindrical drill pipes made for the transport of different kindsof fluids, it is the object of the invention to provide a combined flange coupling, that cancombine the functions and can be assembled under low time consumption and at lowcosts. This object is accomplished in, that the connecting means are axially directed boltsinserted in the outer wall of the drill rod (1) and extending axially past the end of the drillrod (1) into internally threaded blind holes (21, 22) in the next drill rod to be connectedto the first drill rod, and that each terminal surface of a drill rod is made with
arrangements (13-17, 23-27) for at least one coupling means, (31, 33) for the transport ofdifferent kinds of fluids in the drill string.
申请人：Welltec ApS
地址：Hejrevang 19 3450 Allerod DK
国籍：DK
代理机构：Stellinger, Jens-Holger
更多信息请下载全文后查看
