Patent ID: 8939217
Filing Date: 2015-01-27
Classification: E21B,F16K,Y10T

Abstract:
1. A pulse valve for producing pressure pulses within a conduit, comprising an elongate housing that includes: (a) an internal passage for conveying a pressurized fluid between an inlet disposed on one end of the housing and an outlet disposed on an opposite end of the housing, the inlet being configured to couple to a source of the pressurized fluid, and the outlet configured to convey the pressurized fluid; (b) a poppet seat disposed adjacent to said outlet of said housing, the poppet seat including a constricted throat and at least one port disposed in the throat, said port being coupled in fluid communication with a one or more fluid passages axially spaced from said poppet seat; (c) a valve assembly disposed within the elongate housing and axially spaced from said poppet seat, the valve assembly including: