US 12,084,919 B2
Hybrid bit
Scott D. McDonough, The Woodlands, TX (US); and Venkatesh Karuppiah, The Woodlands, TX (US)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Appl. No. 17/595,569
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
PCT Filed May 21, 2020, PCT No. PCT/US2020/033989
§ 371(c)(1), (2) Date Nov. 19, 2021,
PCT Pub. No. WO2020/237046, PCT Pub. Date Nov. 26, 2020.
Claims priority of provisional application 62/850,619, filed on May 21, 2019.
Prior Publication US 2022/0220807 A1, Jul. 14, 2022
Int. Cl. E21B 10/14 (2006.01); E21B 10/10 (2006.01); E21B 10/12 (2006.01); E21B 10/20 (2006.01); E21B 10/22 (2006.01)
CPC E21B 10/14 (2013.01) [E21B 10/10 (2013.01); E21B 10/12 (2013.01); E21B 10/20 (2013.01); E21B 10/22 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A hybrid bit comprising:
a fixed cutting structure including a plurality of fixed cutting elements the fixed cutting structure having a journal cavity;
a first rolling slot within the fixed cutting structure, the rolling slot having a plurality of sleeves disposed on either side of the rolling slot such that a portion of each of the plurality of sleeves abuts against an inner surface of the rolling slot and wherein each of the plurality of sleeves extends partially into the journal cavity, and
a rolling cutting structure coupled to the fixed cutting structure within the rolling slot such that the plurality of sleeves are configured to support the rolling cutting structure, the rolling cutting structure comprising:
a journal bore extending through the rolling cutting structure;
a radially outer surface;
a plurality of cutting elements extending from the radially outer surface of the rolling cutting structure.