| 摘要 |
The method of providing for well tubular member (12) magnetization, the step s include providing a magnetizing structure (40) comprising an electrical coil (43) defining an axis, relatively displacing the member (12) and the structu re (40), with the coil (43) positioned and guided in close, centered proximity to the member (12), while supplying electric current to flow in the coil (43), thereby creating magnetic flux passage through the member (12) and structure (40) to magnetize the member (12), or a part of the member (13), and displacing the member (12) in a wellbore (11).
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