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公开(公告)号：US5431220A
公开(公告)日：1995-07-11
申请号：US217519
申请日：1994-03-24
摘要： A starter mill adapted for use with a whipstock to mill a window through the casing of a well for deviating the direction of drilling. The starter mill includes a bearing nose which is utilized to indicate completion of the milling process. As the mill nears completion of the milling process, the bearing nose will become wedged between the whipstock face and the casing preventing further downhole movement. The bearing nose will engage whipstock and casing, allowing the work string to continue to rotate although the decreased torque resulting from the absence of milling provides a clear signal that the milling operation is complete. The cutters of the mill are spaced a predetermined distance from the bearing nose to ensure completion of the casing window.
摘要翻译： 一种起动机，适于与造斜器一起使用，以便通过井的外壳铣削窗口，以偏离钻孔方向。 起动机包括用于指示铣削过程完成的轴承端头。 随着铣床接近完成铣削过程，轴承的鼻子将楔入到造斜器面和套管之间，防止进一步的井下移动。 轴承端头将接合造斜器和外壳，允许工作线继续旋转，尽管由于没有铣削而产生的扭矩减小提供了铣削操作完成的清晰信号。 铣刀的切割器与轴承鼻部间隔预定距离，以确保壳体窗口的完成。
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公开(公告)号：US5348107A
公开(公告)日：1994-09-20
申请号：US23499
申请日：1993-02-26
CPC分类号： E21B33/085 , F16J15/48
摘要： A system for maintaining an optimum pressure balance within an inner chamber of a drilling head for improved seal life and integrity. The system maintains a pressure differential across the seals thereby preventing well fluids from contaminating the seals and improving their useful life. The drive ring of a drilling head is rotatably supported by a series of bearings disposed within a bearing chamber. The secondary chamber of the drilling head is sealed to prevent contaminants from entering the chamber and fouling the seals. The seals withstand the borehole well pressures to prevent the introduction of contaminants, by maintaining a pressure differential across the seals. The present system compensates for variations in the borehole pressure. A pressure compensator is in communication with the borehole to activate a lubricant pump for increasing lubricant pressure within the inner chamber in response to increased borehole pressures. A relief valve associated with the inner chamber relieves pressure in the seal chamber to maintain lubricant pressure at optimum levels when borehole pressure decreases for controlled operation of the seals. Additional check valves are included in the inner chamber to control the chamber pressure while preventing contamination of the lubricant.
摘要翻译： 一种用于在钻头的内腔内保持最佳压力平衡的系统，以提高密封寿命和完整性。 该系统保持两个密封件之间的压力差，从而防止井液体污染密封件并提高其使用寿命。 钻头的驱动环由设置在轴承室内的一系列轴承可旋转地支撑。 钻头的二次腔被密封以防止污染物进入腔室并污染密封件。 通过保持密封件两端的压力差，密封件能承受井眼井压力以防止污染物的引入。 本系统补偿井眼压力的变化。 压力补偿器与钻孔连通，以响应于增加的井眼压力来启动润滑剂泵，以增加内腔内的润滑剂压力。 与内室相关联的安全阀可减轻密封室中的压力，以便在密封件受控操作时，当井眼压力降低时，将润滑剂压力保持在最佳水平。 在内腔中包括附加止回阀以控制室压力，同时防止润滑剂的污染。
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公开(公告)号：US5213158A
公开(公告)日：1993-05-25
申请号：US811553
申请日：1991-12-20
申请人： Thomas F. Bailey , John E. Campbell
发明人： Thomas F. Bailey , John E. Campbell
IPC分类号： E21B33/08
CPC分类号： E21B33/085
摘要： A drilling head with dual rotating stripper rubbers designed for high pressure drilling operations ensuring sealing under the extreme conditions of high flow or high pressure wells such as horizontal drilling. The dual stripper rubbers seal on the same diameter yet are manufactured of different materials for different sealing functions. The lower stripper rubber is manufactured from a more rigid, abrasive resistant material to divert the flow from the well. The upper stripper rubber is manufactured of a softer sealing material that will closely conform to the outer diameter of the drill string thereby preventing the flow of fluids through the drilling head.
摘要翻译： 具有双旋转剥离橡胶的钻头，专为高压钻井操作设计，确保在高流量或高压井（如水平钻井）的极端条件下进行密封。 双剥离器橡胶密封在相同的直径上，但由不同的材料制成，用于不同的密封功能。 下部剥离橡胶由更刚性，耐磨损的材料制成，以使来自井的流动转移。 上部剥离橡胶由更软的密封材料制成，其将紧密地与钻柱的外径吻合，从而防止流体流过钻头。
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公开(公告)号：US4759413A
公开(公告)日：1988-07-26
申请号：US37818
申请日：1987-04-13
申请人： Thomas F. Bailey , John E. Campbell
发明人： Thomas F. Bailey , John E. Campbell
摘要： A method and apparatus for setting an underwater conductor pipe in which the conductor pipe is lowered into the wellhole on a drill string as the borehole is being formed by a drill bit and underreamer positioned at the end of the drill string below the end of the conductor pipe. The drill string and conductor pipe are detachably interconnected by a housing latch which includes means for detachably securing the drill string and drilling assembly to the conductor pipe. The drill string is provided with an upper latch sub, which retains and supports the drill string in its fully extended position within the conductor pipe, and a lower latch sub which retains and supports the drill string in the retracted position. As the apparatus is lowered a drill motor actuates the drilling assembly such that the well hole is formed in the ocean floor. Drilling continues until the permanent guide base of the conductor pipe engages the ocean floor. Thereafter, the upper latch sub is released and the drill string is retracted until the lower latch engages the latchhousing. The outer annulus of the conductor pipe is then cemented into place while pressure within the conductor pipe is maintained to prevent the cement from travelling up the inside of the conductor pipe. Once the cement is set, the latchhousing is released so that the drill string and latchhousing can be removed from the conductor pipe.
摘要翻译： 一种用于设置水下导体管的方法和装置，其中当钻孔由位于钻柱的端部下方的钻头和扩孔器形成时，导体管在钻柱上下降到井眼中 管。 钻柱和导体管通过壳体闩锁可拆卸地互连，壳体闩锁包括用于将钻柱和钻孔组件可拆卸地固定到导体管的装置。 钻柱具有上部闩锁副，其将钻柱保持并支撑在导体管内的完全伸出位置，以及下部闩锁副，其将钻柱保持并支撑在缩回位置。 随着设备的下降，钻头电机致动钻井组件，使井孔形成在海底。 继续钻孔直到导体管的永久导向底座与海底接合。 此后，释放上部闩锁部分，并且钻柱缩回直到下部闩锁接合闩锁。 然后将导体管的外部环形物粘结到位，同时维持导体管内的压力，以防止水泥从导体管的内部向上移动。 一旦水泥被固定，则释放闩锁，使得钻柱和闩锁可以从导管排出。
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公开(公告)号：US4533003A
公开(公告)日：1985-08-06
申请号：US587490
申请日：1984-03-08
CPC分类号： E21B10/322 , E21B10/20 , E21B10/22
摘要： An underreamer, hole opener, or expansible rotary drill bit including a body having a bore therethrough, an arm mounted at its upper end to the body, a conical cutter mounted for rotation on the lower end of each arm, a cup-shape thrust bearing between the cutter and the arm, a bolt through the arm to secure the cutter on the arm and means including a ball and groove between the bolt and the cutter to lock the bolt to the cutter. In the underreamer form of the present invention, the arms are pivotally mounted in slots in the body and means is provided for moving their arms to their cutting position with their lower ends positioned radially outward from the body.
摘要翻译： 膨胀式开孔器或可膨胀旋转钻头，其包括具有穿过其中的孔的本体，其上端安装到主体的臂，安装成用于在每个臂的下端旋转的锥形切割器，杯形推力轴承 在切割器和臂之间，具有穿过臂的螺栓以将切割器固定在臂上，并且包括在螺栓和切割器之间的球和槽的装置以将螺栓锁定到切割器。 在本发明的扩孔器形式中，臂可枢转地安装在主体中的槽中，并且设置有用于将它们的臂移动到其切割位置并且其下端从身体径向向外定位的装置。
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公开(公告)号：US4399428A
公开(公告)日：1983-08-16
申请号：US115413
申请日：1980-01-25
申请人： Paul R. Hughes , John E. Campbell
发明人： Paul R. Hughes , John E. Campbell
CPC分类号： G08B17/06 , G05D23/1902 , G05D23/24 , G08B21/182
摘要： A thermostat monitoring and controlling the temperature of produce ripening within an enclosure and featuring a bridge circuit sensing errors between the actual and desired temperatures in which the desired temperature is selected directly in units of degrees. A bridge amplifier having feedback maintains the bridge in electrical balance to avoid errors due to changes in bridge component self heating. An error detection circuit having a single control simultaneously selects upper and lower error limits centered on the desired temperature, in units of degrees. The circuit indicates whenever the actual temperature goes outside these limits. An alarm circuit indicates a temperature error or a power failure in the thermostat at the thermostat and at a remote location. This circuit utilizes an alternating current source which activates current direction-dependent indicators operating on alternate half cycles. Electrical isolation of the temperature monitoring circuitry from the circuitry controlling heating, cooling and fan equipments is provided by coupling a signal indicating a temperature error through a single electrically isolating interface to equipment selection and control circuitry at line potential.
摘要翻译： 恒温器监测和控制外壳内产品熟化的温度，并具有桥接电路，感测在直接以度为单位选择所需温度的实际温度和期望温度之间的误差。 具有反馈的桥式放大器使桥接器保持电气平衡，以避免由于桥式部件自热的变化引起的错误。 具有单个控制的错误检测电路同时以度为单位选择以期望温度为中心的上下误差极限。 电路指示每当实际温度超出这些极限时。 报警电路表示恒温器和远程位置的恒温器的温度错误或电源故障。 该电路使用交流电源，其激活在替代半周期上操作的电流方向依赖指示器。 通过将指示温度误差的信号通过单个电隔离接口耦合到线路电位的设备选择和控制电路，来提供温度监控电路与控制加热，冷却和风扇设备的电路的电气隔离。
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公开(公告)号：US3989943A
公开(公告)日：1976-11-02
申请号：US592982
申请日：1975-07-03
IPC分类号： H03K17/968 , G01D5/34
CPC分类号： H03K17/968
摘要： A selectively aligned optical switching device including two adjacent translucent discs having mask segments formed on the surfaces thereof, with the first disc including a sleeve extending from the central opening thereof which is received within the central opening of the second disc. A clamping nut threadably engages the sleeve to selectively align the masking segments of the discs relative to each other. This combination of discs is clamped in concentric alignment against a timing hub which in turn is indexed by a pin relative to a rotary shaft. The mask section of the discs is then received in an optical coupling device which provides operating signals in selected coordination with the rotation of the shaft.
摘要翻译： 一种选择性对准的光学开关装置，包括两个相邻的透光盘，其具有形成在其表面上的掩模段，第一盘包括从其中心开口延伸的套筒，该套筒容纳在第二盘的中心开口内。 夹紧螺母可与套筒螺纹连接，以便相对于彼此选择性地对准盘的掩蔽段。 盘的这种组合被夹紧在相对于定时毂的同心对准中，该定时毂又相对于旋转轴由销引导。 然后，光盘的掩模部分被接收在光耦合装置中，其提供与轴的旋转选择协调的操作信号。
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