US 12,337,428 B2
Force modulation cartridge system for a drill bit
Weixiong Wang, Houston, TX (US); Chris Cheng, Houston, TX (US); Qiang Fu, Korla (CN); and Jingcheng Zhang, Korla (CN)
Assigned to CNPC USA Corporation, Houston, TX (US); Beijing Huamei, Inc., Beijing (CN); and China National Petroleum Corporation, Beijing (CN)
Filed by CNPC USA Corporation, Houston, TX (US); BEIJING HUAMEI, INC., Beijing (CN); and CHINA NATIONAL PETROLEUM CORPORATION, Beijing (CN)
Filed on Mar. 10, 2023, as Appl. No. 18/182,177.
Prior Publication US 2024/0300058 A1, Sep. 12, 2024
Int. Cl. B23P 15/32 (2006.01)
CPC B23P 15/32 (2013.01) 20 Claims
OG exemplary drawing
 
1. A force modulation cartridge system for a drill bit, comprising:
a cutter being comprised of a cutter body having a cutting end, and a cutting surface made integral with said cutter body at said cutting end; and
a cartridge being fixedly attached to said cutter, said cutter being housed within said cartridge with said cutting surface being protruded from said cartridge,
wherein said cartridge comprises:
a holder having a seat anchor side, a cutter side opposite said seat anchor side, a holder sliding surface between said seat anchor side and said cutter side, a cutter side cavity at said cutter side, and a seat anchor cavity at said seat anchor side,
wherein said cutter is in removable engagement with said holder,
wherein said holder sliding surface has a holder sliding angle, and
wherein said seat anchor cavity is parallel to said holder sliding surface;
a seat having a holder anchor side, a bit side opposite said holder anchor side, a seat sliding surface between said holder anchor side and said bit side, and a seat post extending from said holder anchor side,
wherein said seat sliding surface in in sliding engagement with said holder sliding surface,
wherein said seat sliding surface has a seat sliding angle, and
wherein said seat post is parallel to said seat sliding surface; and
a cartridge force member between said holder and said seat so as to exert a restoring force on said holder according to said holder sliding angle and said seat sliding angle.