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1. 发明公开

EP0202190A1 Earth boring bit with improved rigid face seal assembly 失效
标题翻译： Bohrmeissel mit Schleifringabdichtung。
公开(公告)号：EP0202190A1
公开(公告)日：1986-11-20
申请号：EP86630088.2
申请日：1986-05-06
申请人： HUGHES TOOL COMPANY
发明人： Burr, Bruce Hawley
IPC分类号： E21B10/22 , F16J15/34
CPC分类号： E21B10/25 , F16J15/344
摘要： An earth boring bit having a cantilevered bearing shaft (15) and a compensator system (25) to equalize the pressure of the lubricant with the hydrostatic pressure of the drilling fluid surrounding the bit. A rigid face seal assembly (155), positioned between the cutter (147) and bearing shaft of the bit, moves axially in response to, and to compensate for, dynamic pressure changes in the lubricant adjacent the seal. The positioning of the seal groove and seal assembly in relation to the bearing surface is such that rigid face seal movement is decreased relative to axial cutter movement during drilling to enhance seal life. Preferably the ratio of rigid ring movement to axial cutter movement is substantially one half to one.
摘要翻译：具有悬臂轴承轴（15）和补偿器系统（25）的地镗头，用于使润滑剂的压力与围绕钻头的钻井液的静水压力相等。位于切割器（147）和钻头的轴承轴之间的刚性表面密封组件（155）响应于并且补偿邻近密封件的润滑剂的动态压力变化而轴向移动。密封槽和密封组件相对于支承表面的定位使得在钻孔期间相对于轴向切割器运动，刚性表面密封件移动减小以增加密封寿命。优选地，刚性环运动与轴向切割器运动的比率大致为一半到一。

2. 发明公开

EP0138737A3 Earth boring bit with pressure compensating metal face seal 失效
标题翻译：带压力补偿金属表面密封的接地钻头
公开(公告)号：EP0138737A3
公开(公告)日：1986-10-29
申请号：EP84630156
申请日：1984-10-12
申请人： HUGHES TOOL COMPANY-USA
发明人： Burr, Bruce Hawley
IPC分类号： E21B10/24 , F16J15/34
CPC分类号： E21B10/25 , F16C21/00 , F16C33/72 , F16C2352/00 , F16J15/344
摘要： An earth boring bit (11) having a cantilevered bearing shaft (15) and a compensator system to equalize the pressure of the lubricant with the hydrostatic pressure of the drilling fluid surrounding the bit. A rigid face seal assembly (23), positioned between the cutter (17) and bearing shaft (15) of the bit (11), moves axially in response to, and to compensate for, dynamic pressure changes in the lubricant adjacent the seal. This is accomplished by the positioning and sizing of resilient energizer rings in relationship to the geometries of the mating grooves between the cutter (17) and shaft (15) and the rigid sealing rings of the face seal assembly (23).
摘要翻译：具有悬臂轴承轴和补偿器系统的地钻钻头，用于使润滑剂的压力与围绕钻头的钻井液的静水压力相等。定位在钻头的切割器和轴承轴之间的刚性表面密封组件响应于邻近密封件的润滑剂的动态压力变化而轴向移动并且补偿邻近密封件的润滑剂中的动态压力变化。这是通过与切割器和轴之间的配合槽的几何形状和面密封组件的刚性密封环的定位和尺寸来实现的。

3. 发明公开

EP0138737A2 Earth boring bit with pressure compensating metal face seal 失效
标题翻译： Bohrmeissel mit einer druckausgleichenden Schleifringabdichtung。
公开(公告)号：EP0138737A2
公开(公告)日：1985-04-24
申请号：EP84630156.2
申请日：1984-10-12
申请人： HUGHES TOOL COMPANY
发明人： Burr, Bruce Hawley
IPC分类号： E21B10/24 , F16J15/34
CPC分类号： E21B10/25 , F16C21/00 , F16C33/72 , F16C2352/00 , F16J15/344
摘要： An earth boring bit (11) having a cantilevered bearing shaft (15) and a compensator system to equalize the pressure of the lubricant with the hydrostatic pressure of the drilling fluid surrounding the bit.
A rigid face seal assembly (23), positioned between the cutter (17) and bearing shaft (15) of the bit (11), moves axially in response to, and to compensate for, dynamic pressure changes in the lubricant adjacent the seal. This is accomplished by the positioning and sizing of resilient energizer rings in relationship to the geometries of the mating grooves between the cutter (17) and shaft (15) and the rigid sealing rings of the face seal assembly (23).
摘要翻译：具有悬臂轴承轴和补偿器系统的地镗头，用于使润滑剂的压力与围绕钻头的钻井液的静水压力相等。定位在钻头的切割器和轴承轴之间的刚性面密封组件响应于并且补偿邻近密封件的润滑剂的动态压力变化而轴向移动。这是通过与切割器和轴之间的配合槽的几何形状和面密封组件的刚性密封环的弹性增力环的定位和尺寸来实现的。

4. 发明授权

EP0202190B1 Earth boring bit with improved rigid face seal assembly 失效
标题翻译：具有改进的刚性面密封组件的接地钻头
公开(公告)号：EP0202190B1
公开(公告)日：1992-08-19
申请号：EP86630088.2
申请日：1986-05-06
申请人： HUGHES TOOL COMPANY
发明人： Burr, Bruce Hawley
IPC分类号： E21B10/22 , F16J15/34
CPC分类号： E21B10/25 , F16J15/344

5. 发明授权

EP0138737B1 Earth boring bit with pressure compensating metal face seal 失效
标题翻译：具有压力补偿金属表面密封的接地镗孔
公开(公告)号：EP0138737B1
公开(公告)日：1989-07-19
申请号：EP84630156.2
申请日：1984-10-12
申请人： HUGHES TOOL COMPANY
发明人： Burr, Bruce Hawley
IPC分类号： E21B10/24 , F16J15/34
CPC分类号： E21B10/25 , F16C21/00 , F16C33/72 , F16C2352/00 , F16J15/344

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