Invention Grant
- Patent Title: Method of drilling out a reaming tool
- Patent Title (中): 钻出铰孔工具的方法
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Application No.: US12624311Application Date: 2009-11-23
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Publication No.: US07900703B2Publication Date: 2011-03-08
- Inventor: Lester I. Clark , John C. Thomas , Jeffrey B. Lund , Eric E. McClain
- Applicant: Lester I. Clark , John C. Thomas , Jeffrey B. Lund , Eric E. McClain
- Applicant Address: US TX Houston
- Assignee: Baker Hughes Incorporated
- Current Assignee: Baker Hughes Incorporated
- Current Assignee Address: US TX Houston
- Agency: TraskBritt
- Main IPC: E21B29/00
- IPC: E21B29/00

Abstract:
A reaming tool includes a tubular body having a nose portion with a concave center. A plurality of blades defining junk slots therebetween extend axially behind the nose portion and taper outwardly from the exterior of the tubular body. Rotationally leading edges of the blades carry a plurality of cutting elements from the axially leading ends. Selected surfaces and edges of the blades bear tungsten carbide, which may comprise crushed tungsten carbide. The shell of the nose is configured to ensure drillout from the centerline thereof toward the side wall of the tubular body. A method of drilling out a reaming tool is also disclosed.
Public/Granted literature
- US20100065282A1 METHOD OF DRILLING OUT A REAMING TOOL Public/Granted day:2010-03-18
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