US 12,078,015 B2
Polycrystalline diamond cutting element having improved cutting efficiency
Ronald K. Eyre, Orem, UT (US); Yi Fang, Orem, UT (US); Ronald B. Crockett, Mt. Pleasant, UT (US); Lynn Belnap, Spanish Fork, UT (US); Aaron Madsen, Saratoga Springs, UT (US); Haibo Zhang, Lehi, UT (US); J. Daniel Belnap, Lindon, UT (US); Christopher A. Tucker, Provo, UT (US); Xiaoge Gan, Houston, TX (US); Anjie Dong, Spring, TX (US); and Venkatesh Karuppiah, The Woodlands, TX (US)
Assigned to Schlumberger Technology Corporation, Sugar Land, TX (US)
Appl. No. 17/639,021
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
PCT Filed Aug. 28, 2020, PCT No. PCT/US2020/048310
§ 371(c)(1), (2) Date Feb. 28, 2022,
PCT Pub. No. WO2021/041753, PCT Pub. Date Mar. 4, 2021.
Claims priority of provisional application 62/893,831, filed on Aug. 30, 2019.
Prior Publication US 2022/0307325 A1, Sep. 29, 2022
Int. Cl. E21B 10/567 (2006.01)
CPC E21B 10/5673 (2013.01) 19 Claims
OG exemplary drawing
 
1. A cutting element, comprising:
a body;
a concave cutting face at a first end of the body, the concave cutting face comprising one or more cutting ridges adjacent a cutting tip that are raised above the concavity of the concave cutting face and having a length that is at least about 10% of a diameter of the concave cutting face, the concave cutting face further comprising a center dome completely surrounded by a first portion of the concave cutting face, wherein the center dome extends above the first portion; and
an edge around a perimeter of the concave cutting face, the edge having an edge angle defined between a tangent of the concave cutting face and a cylindrical side surface of the body, the edge angle being acute at the cutting tip and varying around the perimeter of the concave cutting face, wherein the edge further comprises a first raised edge portion and a second raised edge portion, wherein the concave cutting face defines a valley between the first raised edge portion and the second raised edge portion, and wherein the center dome extends into the valley between the first raised edge portion and the second raised edge portion.