Patent attributes
A pulsation valve system and method can include a valve mandrel, an oscillating valve and a stationary valve. The valve mandrel can be operably coupled to and downstream of a rotor of a drilling motor. The oscillating valve can be attached to and rotatable with the valve mandrel. The stationary valve can be positioned adjacent and stationary with respect to the oscillating valve head. The stationary valve can include a stationary valve bore defined therethrough. The oscillating valve can include an oscillating valve bore defined therethrough that is alignable with the stationary valve bore at a predetermined rotational position. A valve mandrel cavity allows fluid to travel from the oscillating valve bore and down toward a tool. Rotation of the oscillating valve creates a cyclic obstruction with the stationary valve bore, that results in an agitation force on the drilling motor or bottom hole assembly.
