公开(公告)号：US20100032215A1

公开(公告)日：2010-02-11

申请号：US12462211

申请日：2009-07-29

申请人： Zengyuan Shao ,  Bin Pu ,  Xiaobing Fan

发明人： Zengyuan Shao ,  Bin Pu ,  Xiaobing Fan

IPC分类号： E21B10/14

CPC分类号： E21B10/16 ,  E21B17/1092

摘要： The present invention discloses a tri-cone drill bit comprising: three head sections with upper parts thereof jointed together to form a bit body, three cones rotatably mounted to lower ends of the head sections respectively, nozzle sockets designed on the bit body between respective head sections and each having a hole in which a nozzle is mounted, wherein gage cutters are mounted to an upper trailing side of each head O.D. surface to form a gage holding surface thereon, and a leading side of each head section is backwardly slanted as a whole. The design of gage surface at trailing sides of head sections increases the bit's stability, reduces lateral vibration and also reduces tendency of bit deflection in horizontal drilling applications and effective working life of the bit is improved. Backward slant of leading sides of head sections facilitates upward carrying of drilling cuttings and improves drilling efficiency. Jets from the nozzles are respectively directed to the leading side of each following cone, which enhances bottom hole cleaning and cooling of cutting elements and leads to a longer working life and higher ROP of the bit.

摘要翻译： 本发明公开了一种三锥钻头，包括：三个头部，其上部部分连接在一起以形成钻头体，三个锥体分别可旋转地安装在头部部分的下端，喷嘴插座设计在钻头体之间各自的头部 并且每个具有安装有喷嘴的孔，其中量规切割器安装到每个头部OD的上部后侧 表面以在其上形成量具保持表面，并且每个头部的前侧作为整体向后倾斜。 在头部部分尾部设计计量表面增加了钻头的稳定性，减少了横向振动，并且还降低了水平钻井应用中钻头偏斜的趋势，同时提高了钻头的有效使用寿命。 头部前端的向后倾斜有助于向上承载钻削切屑并提高钻井效率。 来自喷嘴的喷嘴分别指向每个后续锥体的前端，这增强了切割元件的底孔清洁和冷却，并导致更长的工作寿命和更高的钻头的ROP。

公开(公告)号：US20110220423A1

公开(公告)日：2011-09-15

申请号：US13044083

申请日：2011-03-09

申请人： Hongping Tian ,  Zengyuan Shao ,  Xiaobing Fan

发明人： Hongping Tian ,  Zengyuan Shao ,  Xiaobing Fan

IPC分类号： E21B10/00

CPC分类号： E21B10/22 ,  E21B10/25

摘要： This invention relates to a tri-cone bit for high RPM drilling applications, which comprises three head sections and three cones. Cutting elements are arranged on each cone. Upper parts of the three head sections are joined together to form a bit body, on which nozzle sockets are provided, and nozzles are installed in bores of the nozzle sockets. A bearing between the cones and the head sections is a composite roller-journal bearing which is formed by rollers and arc-shaped slides arranged in an alternating way, and a seal means for the bearing is of metal face type. The composite roller-journal bearing of the invention can withstand high RPM and high load, and also has a higher resistance to impact, thereby ensuring longer working life of the bearing under high RPM and medium-high WOB. The six-point gage protection structure enhances stability of the bit and reduces cutting element breakage caused by bit vibration. The above tri-cone bit is suitable for high RPM and medium-high WOB drilling applications and features high drilling efficiency and long service life.

摘要翻译： 本发明涉及一种用于高RPM钻孔应用的三锥钻头，其包括三个头部和三个锥体。 切割元件布置在每个锥体上。 三个头部的上部连接在一起形成一个位体，在其上设有喷嘴插座，喷嘴安装在喷嘴插孔的孔中。 锥体和头部之间的轴承是由以交替方式布置的辊和弧形滑块形成的复合辊轴颈轴承，并且用于轴承的密封装置是金属面型。 本发明的复合滚子轴颈轴承可以承受高转速和高负载，并且还具有较高的抗冲击能力，从而确保轴承在高转速和中高温度下的长寿命。 六点量规保护结构提高了钻头的稳定性，减少了钻头振动引起的切削元件断裂。 上述三锥钻头适用于高RPM和中高WOB钻孔应用，钻孔效率高，使用寿命长。

公开(公告)号：US09238944B2

公开(公告)日：2016-01-19

申请号：US13044083

申请日：2011-03-09

申请人： Hongping Tian ,  Zengyuan Shao ,  Xiaobing Fan

发明人： Hongping Tian ,  Zengyuan Shao ,  Xiaobing Fan

IPC分类号： E21B10/22 ,  E21B10/25

CPC分类号： E21B10/22 ,  E21B10/25

摘要： This invention relates to a tri-cone bit for high RPM drilling applications, which comprises three head sections and three cones. Cutting elements are arranged on each cone. Upper parts of the three head sections are joined together to form a bit body, on which nozzle sockets are provided, and nozzles are installed in bores of the nozzle sockets. A bearing between the cones and the head sections is a composite roller-journal bearing which is formed by rollers and arc-shaped slides arranged in an alternating way, and a seal means for the bearing is of metal face type. The composite roller-journal bearing of the invention can withstand high RPM and high load, and also has a higher resistance to impact, thereby ensuring longer working life of the bearing under high RPM and medium-high WOB. The six-point gage protection structure enhances stability of the bit and reduces cutting element breakage caused by bit vibration. The above tri-cone bit is suitable for high RPM and medium-high WOB drilling applications and features high drilling efficiency and long service life.

摘要翻译： 本发明涉及一种用于高RPM钻孔应用的三锥钻头，其包括三个头部和三个锥体。 切割元件布置在每个锥体上。 三个头部的上部连接在一起形成一个位体，在其上设有喷嘴插座，喷嘴安装在喷嘴插孔的孔中。 锥体和头部之间的轴承是由以交替方式布置的辊和弧形滑块形成的复合辊轴颈轴承，并且用于轴承的密封装置是金属面型。 本发明的复合滚子轴颈轴承可以承受高转速和高负载，并且还具有较高的抗冲击能力，从而确保轴承在高转速和中高温度下的长寿命。 六点量规保护结构提高了钻头的稳定性，减少了钻头振动引起的切削元件断裂。 上述三锥钻头适用于高RPM和中高WOB钻孔应用，钻孔效率高，使用寿命长。