US 12,421,804 B2
Continuous sampling drill bit
Robert Andrew Corona, Salt Lake City, UT (US); Michael Ravella, Salt Lake City, UT (US); and Adrian Brubacher, North Bay (CA)
Assigned to Veracio Ltd., Salt Lake City, UT (US)
Appl. No. 17/614,728
Filed by VERACIO LTD., Salt Lake City, UT (US)
PCT Filed May 21, 2021, PCT No. PCT/US2021/033612
§ 371(c)(1), (2) Date Nov. 24, 2022,
PCT Pub. No. WO2022/245366, PCT Pub. Date Nov. 24, 2022.
Prior Publication US 2023/0358103 A1, Nov. 9, 2023
Int. Cl. E21B 10/60 (2006.01); E21B 10/04 (2006.01)
CPC E21B 10/605 (2013.01) [E21B 10/04 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A drill bit having a central axis, the drill bit comprising:
a shank defining an inner bore; and
a crown having a cutting face and an outer circumferential surface, wherein the crown defines an outer operative circumference and comprises:
a core-receiving slot in communication with the inner bore of the shank;
at least one peripheral slot in communication with the inner bore of the shank, the at least one peripheral slot being within the drill bit and positioned radially between the core-receiving slot and the outer operative circumference of the crown, wherein the at least one peripheral slot is spaced radially inwardly from the outer circumferential surface of the crown, and wherein at least one peripheral slot extends axially from the inner bore of the shank to the cutting face;
at least one face channel, wherein each face channel of the at least one face channel extends between and is in fluid communication with the core-receiving slot and a respective peripheral slot of the at least one peripheral slot; and
a base portion positioned within the core-receiving slot, wherein the base portion defines a breaking surface, wherein at least a portion of the breaking surface, or a plane tangential thereto, is oriented at an oblique angle to the central axis,
wherein the at least one peripheral slot is configured to receive fluid moving in a distal direction toward the cutting face of the crown, and wherein the at least one face channel is configured to deliver fluid from the at least one peripheral slot to the core-receiving slot.