Boring or penetrating the earth – Natural vibration characteristic of an element of boring...
Patent
1991-10-23
1993-03-02
Novosad, Stephen J.
Boring or penetrating the earth
Natural vibration characteristic of an element of boring...
175 67, 175232, 175297, 166177, 166249, 166286, 166312, E21B 718, E21B 724, E21B 414, E21B 31113
Patent
active
051901145
ABSTRACT:
This invention relates to flow pulsing methods and apparatus for various applications including downhole drilling equipment and in particular to an improved flow pulsing method and apparatus of this type to be connected in a drill string above a drill bit with a view to securing improvements in the drilling process.
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Intech International Inc.
Novosad Stephen J.
Phipps Robert M.
Ross John W.
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