Patent Number: 6,167,969

Title: Remote control valve

Abstract: The valve, has an orifice and cooperating poppet with the poppet situated to approach the orifice to an extent determined by a controlling crosshead that reciprocates axially in response to manipulation of the mud flow moving through the valve. The amount of restriction provided by the valve is varied by selected manipulation of the drilling fluid flow controls at the surface. Pressure provided to controlled machinery is regulated by a valve by-pass channel. Changes in the standpipe pressure indicates the state of the valve action achieved down hole.

Inventors: Schoeffler; William N. (Lafayette, LA)

Assignee: Quantum Drilling Motors, Inc

International Classification: E21B 21/00 (20060101); E21B 21/10 (20060101); E21B 034/10 ()

Expiration Date: 01/02/2018