METHOD AND APPARATUS FOR GENERATING FLUID PRESSURE PULSES

摘要

Apparatuses and methods for generating fluid pressure pulses are disclosed. An example apparatus may include a chamber (307) that can collect fluid and an upstream ported disc (305) coupled to a downstream end (308) of the chamber. The upstream ported disc may rotate about a central axis. The upstream ported disc includes an upstream eccentric port (311) that rotates about the central axis as the upstream ported disc rotates. The example apparatus may include a downstream ported disc (306) coupled to a downstream end of the upstream ported disc (305) such that the downstream ported disc remains substantially rotationally fixed relative to the upstream ported disc. The downstream ported disc (306) includes a downstream eccentric port (312) that may align with the upstream eccentric port to form a passageway for fluid to exit from the chamber to outside of the apparatus, at some time in a rotation cycle of the upstream ported disc.