THE CENTRALIZER

摘要

PURPOSE: A centralizer for borehole insertion is provided to use under various circumferences according to the change in the inside diameter of a borehole and to replace a bending bar easily and economically. CONSTITUTION: A centralizer for borehole insertion contains: an upper fixture(10) and a lower fixture(20) formed to be fixed to the wanted spot of a sonde; a bar insertion groove formed in the facing direction of the lower fixture out of the upper fixture and the facing direction of the upper fixture out of the lower fixture and formed to be inclined toward the center of a sonde(1); and a bending bar(30) formed to have one side inserted/fixed to the bar insertion groove of the upper fixture and the other side inserted/fixed to the bar insertion groove of the lower fixture and formed to make the center bend more outward if the interval between the upper fixture and the lower fixture becomes narrow and having elastic force to return to the original state from the bent state.