US 12,078,016 B2
Downhole cutting tool having cutting element with nonplanar face to improve cutting efficiency and durability
Manoj Mahajan, Pune (IN); John Daniel Belnap, Lindon, UT (US); Xiaoge Gan, Houston, TX (US); Yi Fang, Orem, UT (US); Cheng Peng, Orem, UT (US); Lynn Belnap, Spanish Fork, UT (US); Youhe Zhang, Spring, TX (US); Michael George Azar, The Woodlands, TX (US); Venkatesh Karuppiah, The Woodlands, TX (US); Anthony LeBaron, Springville, UT (US); and Xian Yao, Draper, UT (US)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed on Feb. 13, 2023, as Appl. No. 18/168,297.
Application 18/168,297 is a continuation of application No. 17/248,105, filed on Jan. 8, 2021, granted, now 11,578,538.
Claims priority of provisional application 62/985,632, filed on Mar. 5, 2020.
Claims priority of provisional application 62/959,036, filed on Jan. 9, 2020.
Prior Publication US 2023/0193697 A1, Jun. 22, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 10/567 (2006.01); E21B 10/42 (2006.01); E21B 10/26 (2006.01)
CPC E21B 10/5673 (2013.01) [E21B 10/26 (2013.01); E21B 10/42 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A downhole cutting tool comprising:
a body;
at least one blade extending from the body; and
a first cutting element attached to the at least one blade, the first cutting element comprising:
a cutting face at an opposite axial end from a base;
a side surface extending from the base to the cutting face;
an edge formed at the intersection between the cutting face and the side surface;
an elongated protrusion formed at the cutting face and extending between opposite sides of the edge, wherein the elongated protrusion has a geometry comprising:
a border extending around a concave surface, wherein the concave surface comprises:
a face chamfer formed around the border; and
sloped surfaces extending between the border and the edge; and
an edge chamfer between the face chamfer and the edge.