发明名称 Method of mitigating inner diameter reduction of welded joints
摘要 Aspects of the present invention provide methods and apparatus for connecting two tubulars using a welding process with reduced inner diameter flash. The method includes connecting an end of a first expandable tubular to an end of a second expandable tubular using a welding process and reducing an inner diameter flash using a flash reducing device. In one embodiment, the flash reducing device is a plug disposed in the bore of the two tubulars. In another embodiment, the flash reducing device is a roller member. In a further embodiment, the flash reducing device is a rotating cutting member.
申请公布号 US7168606(B2) 申请公布日期 2007.01.30
申请号 US20030360546 申请日期 2003.02.06
申请人 WEATHERFORD/LAMB, INC. 发明人 BADRAK ROBERT P.
分类号 B23K31/02;B23K11/04;B23K37/08;E21B19/16 主分类号 B23K31/02
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