METHOD AND DEVICE FOR MEASURING WEIGHT ON DRILL BIT

Title:

METHOD AND DEVICE FOR MEASURING WEIGHT ON DRILL BIT

Document Type and Number:

Japanese Patent JPS57178120

Kind Code:

A

Abstract:

A measuring device is provided for measuring the weight applied to a drilling bit or like device in a borehole while the drilling is taking place. The measuring apparatus has a tubular housing adapted to be coupled into a drill string preferably immediately above the drill bit. A transducer is mounted in the tubular housing and measures pressure in a captive fluid chamber within the housing which can be correlated to weight on the measuring apparatus and in turn on the drill bit.

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Inventors:

JIYAKUSON REINORUZU KURAIKOMU

Application Number:

JP20505781A

Publication Date:

November 02, 1982

Filing Date:

December 18, 1981

Export Citation:

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Assignee:

DRESSER IND

International Classes:

E21B44/00; E21B47/00; G01L5/00; G08C25/00; (IPC1-7): E21B44/00; G01L5/00; G08C19/00; G08C25/00

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