发明授权
- 专利标题: Milling tool and method for milling multiple casing strings
- 专利标题(中): 用于铣削多个套管柱的铣削工具和方法
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申请号: US680702申请日: 1991-04-04
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公开(公告)号: US5150755A公开(公告)日: 1992-09-29
- 发明人: Terry E. Cassel , Harold E. Payne , Gerald D. Lynde
- 申请人: Terry E. Cassel , Harold E. Payne , Gerald D. Lynde
- 专利权人: Baker Hughes Incorporated
- 当前专利权人: Baker Hughes Incorporated
- 主分类号: B23B5/16
- IPC分类号: B23B5/16 ; E21B10/46 ; E21B29/00
摘要:
A cutting tool (22) includes a plurality of pivoted blades (36) for swinging outwardly to an expanded radial position for first cutting the walls of multiple casing strings (10, 11), and then removing a predetermined length of the casing strings (10, 11) simultaneously in a cutting action. Pivoted blades (36) have cutting elements (66) of a similar size and shape positioned about upper, lower, and outer sides (60, 62, 64) of the blades (36). The lower sides (62) of the blades (36) engage the upper annular cut ends of the casing strings (10, 11) in a cutting action without tripping or removal from the bore hole.
公开/授权文献
- US5668212A Aqueous organosiloxane liquid composition and its use 公开/授权日:1997-09-16
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