公开(公告)号：US11879296B2

公开(公告)日：2024-01-23

申请号：US17935127

申请日：2022-09-25

申请人： CNPC USA Corporation ,  Beijing Huamei Inc. CNPC

发明人： Ming Zhang ,  Chris Cheng ,  Jiaqing Yu ,  Qi Peng ,  Xiaohua Ke

IPC分类号： E21B10/62 ,  E21B10/43

CPC分类号： E21B10/62 ,  E21B10/43

摘要： The force modulation system for a drill bit includes a cutter, a blade cap, a cap retention device, and a first force member. The cutter or cutters fit in the blade cap, and the blade cap fits to the drill bit. The cap retention device exerts a cap retention force in a first direction. The first force member exerts a first force in a second direction. The cutting profile of the force modulation system is now variable in more than one direction so as to avoid excessive forces from more than one direction for each cutter on the blade cap. There can also be a second force member to exert a second force in the first direction for more variability of the cutting profile in the first direction and a third force member to exert a third force in an opposite second direction.

公开(公告)号：US11499378B2

公开(公告)日：2022-11-15

申请号：US17100872

申请日：2020-11-21

申请人： CNPC USA Corporation ,  Beijing Huamei Inc. CNPC

发明人： Ming Zhang ,  Chris Cheng ,  Jiaqing Yu ,  Qi Peng ,  Xiaohua Ke

IPC分类号： E21B10/62 ,  E21B10/43

摘要： The force modulation system for a drill bit includes a cutter, a blade cap, a cap retention device, and a first force member. The cutter or cutters fit in the blade cap, and the blade cap fits to the drill bit. The cap retention device exerts a cap retention force in a first direction. The first force member exerts a first force in a second direction. The cutting profile of the force modulation system is now variable in more than one direction so as to avoid excessive forces from more than one direction for each cutter on the blade cap. There can also be a second force member to exert a second force in the first direction for more variability of the cutting profile in the first direction and a third force member to exert a third force in an opposite second direction.

公开(公告)号：US12104111B2

公开(公告)日：2024-10-01

申请号：US17654721

申请日：2022-03-14

申请人： CNPC USA Corporation ,  Beijing Huamei, Inc. ,  China National Petroleum Corporation

发明人： Kai Zhang ,  Chris Cheng ,  Xiao Feng ,  Qi Peng ,  Xiongwen Yang

IPC分类号： C09K3/14 ,  B24D11/00

CPC分类号： C09K3/1436 ,  B24D11/003

摘要： A superabrasive compact and a method of making the superabrasive compact are disclosed. A superabrasive compact may comprise a diamond table and a substrate. The diamond table may be attached to the substrate. The diamond table may include bonded diamond grains defining interstitial channels. The interstitial channels may be filled with non-catalytic binder materials in some regions. The interstitial channels in some other regions may be filled with a catalytic materials from the substrate.