초록 ▼

A high capacity fluidic valve is disclosed which is useful for creating pressure pulses in a drill string for communicating diagnostic information from the bottom of a well bore to the surface during drilling. The device of the present invention comprises essentially a vortex chamber having an eleme

A high capacity fluidic valve is disclosed which is useful for creating pressure pulses in a drill string for communicating diagnostic information from the bottom of a well bore to the surface during drilling. The device of the present invention comprises essentially a vortex chamber having an element therein which is capable of rapidly changing the flow through the chamber from radial to vortical. Flow throttling action in the valve is produced by the vortical flow in the chamber, thereby producing pressure pulses in the fluid stream flowing through the valve.

대표청구항 ▼

Means for controlling the flow of a fluid comprising essentially, a vortex chamber having a radial inlet thereto for said flow, and a centrally located outlet from said chamber, whereby flow into said chamber flows radially to said outlet, and a movable barrier within said vortex chamber for selecti

Means for controlling the flow of a fluid comprising essentially, a vortex chamber having a radial inlet thereto for said flow, and a centrally located outlet from said chamber, whereby flow into said chamber flows radially to said outlet, and a movable barrier within said vortex chamber for selectively altering said flow from radial to vortical within said chamber; wherein said movable barrier comprises a tab within said vortex chamber, said vortex chamber comprising a recess in a peripheral wall thereof, and said tab is movable between a first position located within said recess and a second position in said chamber exterior of said recess.