Downhole drilling apparatus with rotatable cutting element
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United States of America
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Jan 11, 2022
Grant Date -
Aug 27, 2020
app pub date -
Feb 25, 2019
filing date -
Feb 25, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
A downhole drilling apparatus may comprise a rotatable body with fixed cutting elements protruding from an exterior thereof. To form a subterranean borehole, the fixed cutting elements, spaced at a constant radius from a rotational axis of the body, may degrade an earthen formation as the body rotates. The body may also have a rotatable cutting element protruding from its exterior. To remove material from an interior wall of the borehole, the rotatable cutting element may be positioned in a first rotational orientation wherein it extends radially beyond the constant radius of the fixed cutting elements. An amount of material being removed may be altered by rotating the rotatable cutting element into a second rotational orientation wherein it remains radially within the constant radius.
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