会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明申请
    • RECALIBRATION OF DOWNHOLE SENSORS
    • 井下传感器的测量
    • WO2003096075A1
    • 2003-11-20
    • PCT/GB2002/003730
    • 2002-08-13
    • CAMCO INTERNATIONAL (UK) LIMITED
    • DOWNTON, Geoff
    • G01V11/00
    • G01V13/00E21B47/00
    • In downhole drilling tools, a firsts set of inexpensive and/or relatively small sensors that typically have lower accuracy and higher drift than conventional downhole sensors are located in the drill string adjacent to the bit. A second set of highly accurate sensors is located in a more protected location higher in the drill string away from the drill bit. As drilling progresses these sensors pass through the same portion of the formation measured by the first set of sensors. Key properties are measured by the second set of sensors which allow a calibration offset to be applied the data measure by the first set of sensors.
    • 在井下钻具中,与传统的井下传感器相比,典型地具有较低精度和较高漂移的廉价和/或相对较小的传感器的第一组位于与钻头相邻的钻柱中。 第二组高度精确的传感器位于钻头串中远离钻头的更受保护的位置。 随着钻探进行,这些传感器通过由第一组传感器测量的地层的相同部分。 关键属性由第二组传感器测量,允许校准偏移由第一组传感器应用于数据测量。
    • 7. 发明授权
    • Steerable rotary drilling systems
    • 可转向旋转钻井系统
    • US06089332A
    • 2000-07-18
    • US4592
    • 1998-01-08
    • John D. BarrJohn M. CleggWilliam C. Motion
    • John D. BarrJohn M. CleggWilliam C. Motion
    • E21B7/06E21B7/08E21B21/10E21B47/18E21B47/024
    • E21B7/06E21B21/10E21B47/18E21B47/185
    • A steerable rotary drilling system has a bottom hole assembly which includes, in addition to the drill bit, a modulated bias unit and a control unit, the bias unit comprising a number of hydraulic actuators around the periphery of the unit, each having a movable thrust member which is hydraulically displaceable outwardly for engagement with the formation of the borehole being drilled. Each actuator may be connected, through a control valve, to a source of drilling fluid under pressure and the operation of the valve is controlled by the control unit so as to modulate the fluid pressure supplied to the actuators as the bias unit rotates. If the control valve is operated in synchronism with rotation of the bias unit the thrust members impart a lateral bias to the bias unit, and hence to the drill bit, to control the direction of drilling. Pulses transmitted through the drilling fluid as a result of operation of the bias unit are detected and interpreted at the surface, or at a different location downhole, to obtain information regarding the operation of the bias unit or other parts of the bottom hole assembly. Data signals from downhole sensors may be arranged to modify the control and operation of the bias unit in such manner that the data is encoded as pulses generated in the drilling fluid by the bias unit.
    • 可操纵的旋转钻井系统具有底孔组件,除了钻头之外,还包括调制偏压单元和控制单元,偏置单元包括围绕单元周边的多个液压致动器,每个液压致动器具有可移动的推力 构件,其可液压地向外移位,用于与正在钻孔的钻孔的形成接合。 每个致动器可以通过控制阀连接到压力下的钻井流体源,并且阀的操作由控制单元控制,以便在偏压单元旋转时调节供应到致动器的流体压力。 如果控制阀与偏置单元的旋转同步地操作,则推力构件向偏置单元施加横向偏压,并因此向钻头施加横向偏压,以控制钻孔的方向。 作为偏置单元的操作的结果,通过钻井液传输的脉冲在表面或井下的不同位置处被检测和解释,以获得关于偏置单元或底孔组件的其它部分的操作的信息。 来自井下传感器的数据信号可以被布置成以这样的方式修改偏置单元的控制和操作,使得数据被编码为由偏置单元在钻井流体中产生的脉冲。
    • 9. 发明授权
    • Methods of manufacturing rotary drill bits
    • 旋转钻头的制造方法
    • US6148936A
    • 2000-11-21
    • US244471
    • 1999-02-04
    • Stephen Martin EvansAndrew Bell
    • Stephen Martin EvansAndrew Bell
    • B22F7/06E21B10/46E21B10/08E21B10/62
    • E21B10/46B22F7/06
    • A rotary drill bit is manufactured by a powder metallurgy process by placing a metal mandrel in a mold, packing the mold with particulate matrix-forming material, infiltrating the material with a molten binding alloy, and cooling the assembly to form a solid infiltrated matrix bonded to the mandrel. The mandrel comprises an outer part surrounded by the matrix-forming material and an inner part, secured to the outer part but out of contact with the matrix-forming material. The outer part of the mandrel is formed from a material having thermal characteristics close to those of the matrix, so as to reduce the tendency for the matrix to crack under thermal stress, while the inner part of the mandrel is formed from a precipitation-hardening material, the strength and hardness of which increases in the infiltration process and the subsequent heating/cooling cycle for brazing the cutters on to the drill bit. The threaded shank of the drill bit is formed directly on the inner part since it will have sufficient strength and hardness for this purpose.
    • 通过粉末冶金工艺制造旋转钻头,通过将金属心轴放置在模具中,用模具成型材料填充模具,用熔融粘结合金渗透材料,并冷却组件以形成固体渗透基质 到心轴。 心轴包括被基体形成材料包围的外部部分和固定到外部部分但与基质形成材料不接触的内部部分。 心轴的外部由具有接近于基体的热特性的材料形成,以便降低基体在热应力下裂纹的倾向,而心轴的内部部分由沉淀硬化形成 材料,其强度和硬度在渗透过程和随后的加热/冷却循环中增加,以将刀具钎焊到钻头上。 钻头的螺纹柄直接形成在内部,因为它将具有足够的强度和硬度。
    • 10. 发明授权
    • Rotary drill bits with extended bearing surfaces
    • 旋转钻头具有延伸的轴承表面
    • US6129161A
    • 2000-10-10
    • US159715
    • 1998-09-24
    • Tom Scott RobertsClive Jarvis
    • Tom Scott RobertsClive Jarvis
    • E21B10/54E21B10/55E21B10/60E21B17/10
    • E21B10/55E21B10/602E21B17/1092
    • A rotary drill bit comprises a bit body having a leading face and a gauge region, cutting elements mounted on the bit body, fluid channels extending outwardly across the leading face towards the gauge region, and nozzles for supplying fluid to the channels. At the outer end of each alternate channel, in the gauge region, is an outwardly facing junk slot which extends across only a part of the width of the channel, and a bearing surface which extends across the other part of the channel and bears against a wall of the borehole being drilled. In the channel, inwardly of the bearing surface, is an opening into an enclosed passage which passes internally through the bit body to an outlet. The bearing surfaces at the end of the channels increase the peripheral bearing surface area of the drill bit, thus improving stability, but fluid can still escape from all parts of each channel.
    • 旋转钻头包括具有前表面和测量区域的钻头体,安装在钻头体上的切削元件,朝向测量区域的引导面向外延伸的流体通道,以及用于向通道供应流体的喷嘴。 在每个备用通道的外端处,在测量区域中,是向外的垃圾槽,其仅延伸穿过通道宽度的一部分,以及延伸穿过通道的另一部分的支承表面, 被钻孔的墙壁。 在通道中,支承表面的内部是通向内部穿过钻头体的出口的通向封闭通道的开口。 通道末端的轴承表面增加了钻头的周向轴承表面积,从而提高了稳定性,但是流体仍然可以从每个通道的所有部分逃逸出来。