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Title:
DRILLING TOOL
Document Type and Number:
Japanese Patent JPS63184689
Kind Code:
A
Abstract:
A milling tool for use in oil and gas extraction wells has a tubular member (1) with a longitudinal bore (2) for the passage of fluid and radially extending cutting blades. Upwardly directed ports (70) extend from the bore to a location below the cutting edge (6) of the blades for positive removal of cuttings.

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WO/2015/191889DOWNHOLE VIBRATORY BYPASS TOOL
Inventors:
YOHAN SUPURINGAA
Application Number:
JP20804787A
Publication Date:
July 30, 1988
Filing Date:
August 21, 1987
Export Citation:
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Assignee:
SMITH INTERNATL NORTH C LTD
International Classes:
E21B10/60; E21B21/00; E21B29/00; (IPC1-7): E21B10/60
Attorney, Agent or Firm:
Akio Takahashi



 
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