公开(公告)号：US5014778A

公开(公告)日：1991-05-14

申请号：US169836

申请日：1988-03-18

Applicant: Gerald D. Lynde ,  Kenneth W. Winterrowd ,  Harold H. Harvey, Jr.

Inventor： Gerald D. Lynde ,  Kenneth W. Winterrowd ,  Harold H. Harvey, Jr.

IPC: B23B5/16 ,  E21B29/00

CPC classification number: B23B5/16 ,  B23B5/168 ,  E21B29/002 ,  Y10T408/558 ,  Y10T408/78

Abstract: An oil field cutting tool (10) for progressively cutting away a tubular member (14) installed within a well from the upper annular end (12) of the tubular member (14). The cutting tool (10) includes a plurality of elongate blades (32) spaced about the periphery of the cylindrical body (18) of the cutting tool (10). A plurality of cutting elements (42) of a predetermined size and shape are secured in a predetermined pattern on the leading surface of the blades (32) in a plurality of closely spaced parallel rows extending transversely between the sides of the blades (32) and in a plurality of closely spaced parallel columns extending generally longitudinally between the ends of the blades (32).

Abstract translation: 一种油田切割工具（10），用于从管状构件（14）的上部环形端（12）逐渐切割安装在井内的管状构件（14）。 切割工具（10）包括围绕切割工具（10）的圆柱体（18）的周边间隔开的多个细长叶片（32）。 具有预定尺寸和形状的多个切割元件（42）以预定图案被固定在叶片（32）的前表面上，该叶片（32）的横向于叶片（32）的侧面之间横向延伸的多个紧密间隔的平行排列，并且 在大致纵向延伸在叶片（32）的端部之间的多个紧密间隔的平行柱中。