Wear resistant vibration assembly and method

US10829993B1 · kind B1 · utility

Assignee

• Rival Downhole Tools LC · US

Inventors

• Gunther HH von Gynz-Rekowski · Conroe, US
• William Christian Herben · Magnolia, US
• Steven Samuel Mitchell · Scottsdale, US
• Russell Wayne Koenig · Conroe, US
• Mark Joshua Miller · Downieville, US
• Kevin J. Rudy · Tomball, US

Key dates

• Filing date: May 2, 2019
• Grant date: Nov 10, 2020
• Expiry date: Jul 16, 2039

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B28/00
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A vibration assembly includes a valve above a rotor and stator. The rotor rotates within the stator as fluid flows therethrough. The valve includes a rotating valve segment, which rotates with the rotor, and a non-rotating valve segment each including at least one fluid passage. In an open position, the fluid passages of the valve segments are aligned and a fluid flows through the valve. In a restricted position, the fluid passages of the valve segments are partially or completely unaligned, thereby creating a pressure pulse that is transmitted through the drill string or coiled tubing above the valve. The valve may further include an inner sleeve and an outer sleeve surrounding the non-rotating valve segment. The inner and outer sleeves allow axial sliding but prevent rotation of the non-rotating valve segment. The assembly may further include a lower thrust bearing at a lower end of the rotor.