Flow pulsing method and apparatus for drill string

Details Flow pulsing method and apparatus for drill string Flow pulsing method and apparatus for drill string

1989-11-15

1991-04-23

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

050092723

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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