Rotary shock absorption tool

Abstract

Apparatuses, tools, assemblies, and methods are disclosed for reducing vibration. A shock absorption apparatus may include a stator and a rotor inside the stator. A first piston section may be included and define a first piston chamber having a first piston therein. The first piston chamber may be fluidly coupled to a first end portion of an annulus defined in a region between the stator and the rotor. A second piston section may also be defined and may include a second piston chamber with a second piston therein. The second piston chamber may be fluidly coupled to a second end portion of the annulus.

Description

Background technique [0001] Various downhole tools may be used in drilling, completing, or reengineering a well. For example, a drilling tool assembly may include a drill string connected to a bottom hole assembly including a drill bit. The drill string may include several sections of drill pipe connected end-to-end by one or more tool joints, and the drill string may transfer drilling fluid (e.g., through a central bore) and / or rotational torque from the drilling machine to the drill bit . If so assembled, the bottom hole assembly may use a downhole motor (eg, a mud motor) to transmit torque to the drill bit. [0002] Fluids may be carried downhole through hydraulic passages provided by the drill pipe. The fluid (eg, mud) may be pumped from the surface and exit the drilling tool assembly at a plurality of bores (eg, jets) in the drill bit. These perforations may be used to drain drilling fluid that cools the turret and carries rock or other cuttings out of the wellbore du...

AI Technical Summary

Problems solved by technology

In some cases, the formed wellbore may be larger than desired, have an off-track, or have poor wellbore quality

Additionally, vibrations may cause damage to one or more drill string components and / or any other downhole components

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