Downhole Vibratory Tool for Placement in Drillstrings
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United States of America Patent
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Issued Date -
Nov 1, 2018
app pub date -
Jul 6, 2018
filing date -
Aug 5, 2014
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status (Latency Note)
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Abstract
A downhole vibratory tool for placement in drillstrings is disclosed. The downhole vibratory tool creates vibration in the drillstring while drilling. A rotary drive rotates in response to fluid flow through it, rotating a rotor having a lower end engaging an upper end of a mandrel. The mandrel is held in a main body such that it is rotationally locked with respect to the main body, but can move longitudinally within a restricted range. The lower end of the rotor and the upper end of the mandrel have interfacing surfaces. Rotation of the rotor and interaction of the interfacing surfaces creates a back-and-forth movement of the mandrel with respect to the rest of the tool, creating the desired vibratory motion.
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