Coupling for drill pipes

专利名称：Coupling for drill pipes发明人：JORGEN HALLUNDBAEK申请号：AU7330798申请日：19980414公开号：AU7683B2公开日：20021121

摘要：In an assembly for cylindrical drill pipes made for the transport of differentkinds of fluids, a combined flange assembly can combine the functions and can beassembled under low time consumption and at low cost. Drill rods are connected byaxially directed bolts inserted in the outer wall of a first drill rod (1) and extending axiallypast the end of the first drill rod (1) into internally threaded blind holes (21, 22) in thenext drill rod to be connected to the first drill rod. Each terminal surface of a drill rod ismade with arrangements (13-17, 23-27) for at least one coupling plug (31, 33) for thetransport of different kinds of fluids in the drill string.

申请人：WELLTEC APS

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