Patent ID: 11927096
Assignee: nan
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 19:
20. A method of using a pulsation valve system for providing oscillating fluid flow to a downhole tool, the method comprising the steps of:
a) flowing a working fluid through a power unit of a drilling motor assembly to rotate a rotor;
b) rotating a valve mandrel by way of rotation of the rotor so that an oscillating valve bore defined through an oscillating valve head cyclically aligns with a stationary valve bore defined through a stationary valve head at a predetermined rotational position based on rotation of the rotor so that fluid flow cyclically passes through the stationary valve bore and the oscillating valve bore, the valve mandrel being operatively coupled to the rotor, and wherein a shaft section of the valve mandrel is receivable through a stationary valve central bore defined through the stationary valve head and secured in an oscillating valve central bore defined in the oscillating valve head; and
c) controlling flow of the working fluid exiting the oscillating valve bore dependent on a rotational location of the oscillating valve bore in relation to the stationary valve bore; wherein the valve mandrel includes a mandrel cavity defined through a first mandrel end and into the valve mandrel along a longitudinal axis of the valve mandrel;
wherein the oscillating valve bore being parallel with a longitudinal axis of the oscillating valve head; and
wherein the stationary valve head being positioned adjacent and stationary with respect to the oscillating valve head, and wherein the stationary valve central bore and the stationary valve bore each being parallel with a longitudinal axis of the stationary valve head.