Downhole rotary cutting tool
JR Hird, AB Johnson, G Tunç - US Patent 10,704,332, 2020 - Google Patents
A rotary cutting tool, which may be a reamer for enlarging an underground borehole or a mill
to remove tubing by cutting into the inside wall of the tubing, has a plurality of cutter …
to remove tubing by cutting into the inside wall of the tubing, has a plurality of cutter …
Whipstock for use with a mill bit including varying material removal rates
WP Dietz, DJ Steele, C Grace - US Patent 12,071,815, 2024 - Google Patents
Provided is a whipstock and well system. The whipstock, in one aspect, includes a coupling
section having a first radius of curvature, the coupling section configured to engage with a …
section having a first radius of curvature, the coupling section configured to engage with a …
Mill bit including varying material removal rates
WP Dietz, DJ Steele, C Grace - US Patent 11,939,819, 2024 - Google Patents
A mill bit and a well system are covered. The mill bit, in one aspect, includes a tubular
having an uphole end and a downhole end. The mill bit, in accordance with this aspect …
having an uphole end and a downhole end. The mill bit, in accordance with this aspect …
Ruggedized bidirectional cutting system
LM Smith - US Patent 11,346,159, 2022 - Google Patents
A ruggedized bidirectional cutting system with an outer wear band having a first blade-free
fitting section engaging within the drill string and a first cutting section integral with the first …
fitting section engaging within the drill string and a first cutting section integral with the first …
Expandable reamer
AB Johnson, JR Hird - US Patent 10,415,318, 2019 - Google Patents
An expandable reamer for a borehole has a plurality of support elements (202) distributed
around a central axis of the tool with cutters (234, 236) and stabilising pads (250) on the …
around a central axis of the tool with cutters (234, 236) and stabilising pads (250) on the …