US 12,421,801 B2
Drill bit for use with intensified fluid pressures
Gary R. Portwood, Saline (IT); Luca Tedeschi, Saline (IT); Alessandro Bertini, Saline (IT); Simone Pallesi, Saline (IT); Johann Obermair, Celle (DE); James Layne Larsen, Spring, TX (US); and Alessio Cechi, Saline (IT)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed on Jul. 12, 2024, as Appl. No. 18/770,757.
Application 18/770,757 is a division of application No. 18/059,259, filed on Nov. 28, 2022, granted, now 12,037,850.
Application 18/059,259 is a continuation of application No. 17/250,079, granted, now 11,512,536, previously published as PCT/US2019/033035, filed on May 20, 2019.
Claims priority of provisional application 62/674,512, filed on May 21, 2018.
Prior Publication US 2024/0360725 A1, Oct. 31, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 10/18 (2006.01); E21B 10/60 (2006.01); E21B 17/18 (2006.01)
CPC E21B 10/18 (2013.01) [E21B 10/60 (2013.01); E21B 17/18 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A system for removing material, comprising:
a bit comprising:
a first body;
a low-pressure fluid conduit;
a plurality of low-pressure nozzles coupled to the first body and in fluid communication with the low-pressure fluid conduit;
a plurality of arms extending from the first body, each arm supporting a roller cone configured to rotate relative to the respective arm;
a second body coupled to the first body, the second body comprising a high-pressure fluid conduit extending through the first body in a radial direction;
a downhole pressure intensifier coupled to the high-pressure fluid conduit and including a passage in fluid communication with the low-pressure fluid conduit; and
a high-pressure nozzle coupled to the second body, wherein the high-pressure nozzle extends farther in a longitudinal direction from the first body than the plurality of low-pressure nozzles.