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公开(公告)号：US4904865A
公开(公告)日：1990-02-27
申请号：US177389
申请日：1988-04-01
摘要： Improved radioactivity well logging by mounting a scintillator in a hole extending through a drill collar at the lower end of a drill string so that measurements can be made while drilling. Radioactive sources (when required for well logging) are mounted in cavities which open to the exterior of the drill collar. Light from the scintillator is coupled through a right-angle prism or fiber optics through an angle of about 90.degree. so that an elongated photomultiplier tube can be mounted within a housing within the drill collar with the longitudinal axis of the photomultiplier tube extending substantially parallel to the axis of the drill collar to provide maximum cross sectional area for flow of drilling fluid with the housing in the drill collar.
摘要翻译： 通过将闪烁体安装在延伸穿过钻柱下端的钻铤的孔中以改进放射性测井，以便在钻井时进行测量。 放射源（当测井所需时）安装在通向钻铤外部的空腔中。 来自闪烁体的光通过直角棱镜或光纤耦合到约90°的角度，使得细长的光电倍增管可以安装在钻铤内的壳体内，光电倍增管的纵轴基本上平行于 钻铤的轴线，以提供最大横截面面积，用于钻井液体与钻铤中的壳体的流动。
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2.发明授权High sensitivity well logging system having dual transmitter antennas and intermediate series resonant 失效具有双发射天线和中间串联谐振的高灵敏度测井系统
公开(公告)号：US5081419A
公开(公告)日：1992-01-14
申请号：US697524
申请日：1991-04-29
摘要： A well logging apparatus and method for measuring the resistivity of the formation surrounding a borehole is disclosed. The invention provides two transmitting antennas arranged around a housing means or drill collar in spaced relation from one another. A transmitting circuit alternately supplies an oscillating drive signal to each transmitting antenna with a sufficiently high frequency such that one and then the other of the transmitting antennas radiates an electromagnetic wave signal which propagates through the formation. Two receiving antennas are located equally spaced between the transmitting antennas to produce pick-up signals from the electromagnetic wave propagating through the formation. Each receiving antenna includes a single turn coil connected in series with a capacitor to provide a reduced impedance circuit to resonate in the frequency region embracing the oscillating drive signal. Receive antenna circuitry responsive to induced alternating current in the coil produces a signal indicative of the formation parameter under study. The method of positioning two series resonant single turn receiving antennas tuned to the oscillating drive frequency and alternately coupling an electrical drive signal to a pair of transmitters spaced equally on each side of the receiving antennas allows receiving signals which are self-cancelling for system induced effects.
摘要翻译： 公开了用于测量围绕钻孔的地层的电阻率的测井装置和方法。 本发明提供了两个彼此间隔开的布置在壳体装置或钻铤周围的发射天线。 发射电路以足够高的频率向每个发射天线交替地提供振荡驱动信号，使得发射天线中的一个发射天线和另一个发射天线辐射通过地层传播的电磁波信号。 两个接收天线位于发射天线之间的距离相等的距离处，以产生从电磁波传播通过地层的拾取信号。 每个接收天线包括与电容器串联连接的单匝线圈，以提供减小的阻抗电路以在包含振荡驱动信号的频率区域中谐振。 响应于线圈中的感应交流电的接收天线电路产生指示正在研究的地层参数的信号。 将调谐到振荡驱动频率的两个串联谐振单匝接收天线定位并将电驱动信号交替地耦合到在接收天线的每一侧上均匀隔开的一对发射机的方法允许接收对于系统感应效应而自消除的信号 。
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3.发明授权Externally mounted radioactivity detector for MWD employing radial inline scintillator and photomultiplier tube 失效MWD的外置放射性检测器采用径向直列闪烁体和光电倍增管
公开(公告)号：US5061849A
公开(公告)日：1991-10-29
申请号：US485041
申请日：1990-02-26
摘要： Improved radioactivity well logging by mounting a scintillator and photomultiplier tube in a single case interfacing with a hole extending through a drill collar at the lower end of a drill string so that measurements can be made while drilling. Radioactive sources (when required for well logging) are mounted in cavities which open to the exterior of the drill collar. Light from the scintillator is coupled directly to the aligned photomultiplier tube both of which are mounted in a case extending radially within the drill collar and sealingly engaging an electronics housing within the drill collar and the drill collar wall surrounding the hole. The scintillator is of greater diameter than the photomultiplier tube. A frustoconical light pipe connects the scintillator and the photomultiplier tube, channeling scintillation in the crystal to the photomultiplier to provide an amplified detection capability over that for a scintillator having the same diameter as the photomultiplier tube.
摘要翻译： 通过将闪烁体和光电倍增管安装在与穿过钻柱下端延伸穿过钻铤的孔连接的单个壳体中来改善放射性测井，以便在钻孔时进行测量。 放射源（当测井所需时）安装在通向钻铤外部的空腔中。 来自闪烁体的光直接耦合到对准的光电倍增管，两者均安装在径向在钻铤内延伸的壳体中，并密封地接合钻铤内的电子设备壳体和围绕孔的钻铤壁。 闪烁体的直径大于光电倍增管的直径。 截头圆锥形光管连接闪烁体和光电倍增管，将晶体中的闪烁物引导到光电倍增管，以提供比具有与光电倍增管相同直径的闪烁体的放大检测能力。
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4.发明授权
公开(公告)号：US5402068A
公开(公告)日：1995-03-28
申请号：US820091
申请日：1992-01-13
摘要： A logging-while-drilling system is disclosed which includes a pair of receiving antenna disposed between upper and lower transmitting antenna. The upper and lower transmitting antenna are energized successively to generate an electromagnetic wave which propagates through the formation surrounding the borehole. The amplitude attenuation and phase shift of the electromagnetic wave between the receiving antenna is measured. Measurements from both the upper and lower transmitting antenna can be combined to eliminate by cancellation system error components. In order to further improve the performance of the logging-while-drilling system, separate and dedicated driver circuits are provided proximate each transmitter. In addition, reference signals which are utilized to coordinate and synchronize the operation of the various components of the logging-while-drilling system are provided at frequencies which are substantially different from the interrogation frequency of the electromagnetic interrogation signal.
摘要翻译： 公开了一种记录钻井系统，其包括设置在上部和下部发射天线之间的一对接收天线。 上下发射天线依次通电，产生电磁波，该电磁波传播穿过钻孔周围的地层。 测量接收天线之间电磁波的振幅衰减和相移。 可以组合上下发射天线的测量结果，以消除系统误差分量。 为了进一步提高测井同步钻井系统的性能，在每个发射机附近提供独立和专用的驱动电路。 此外，用于协调和同步钻井同步钻井系统的各种部件的参考信号以与电磁询问信号的询问频率基本不同的频率提供。
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公开(公告)号：US5115415A
公开(公告)日：1992-05-19
申请号：US665310
申请日：1991-03-06
IPC分类号： E21B47/18
CPC分类号： E21B47/185 , E21B47/18
摘要： Variable control of the stroke and timing of the poppet in a pressure pulse generator system provides desired control for varying down hole conditions. A stepper motor interconnected to the poppet provides variable acceleration and variable position for the poppet under the control of a motor controller and motor driver which establish the number of steps and timing of steps for the motor. Various valve position profiles are provided in a memory for specific stroke and acceleration operation of the valve under varying down hole conditions and signaling requirements.
摘要翻译： 压力脉冲发生器系统中提升阀的行程和时间的可变控制为改变井下条件提供了期望的控制。 互连到提升阀的步进马达在马达控制器和马达驱动器的控制下提供用于提升阀的可变加速度和可变位置，其确定马达的步数和步数。 在不同的井下条件和信号要求下，在存储器中提供各种阀位轮廓以用于特定行程和加速操作。
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公开(公告)号：US4386422A
公开(公告)日：1983-05-31
申请号：US190626
申请日：1980-09-25
申请人： Edward S. Mumby , John D. Jeter
发明人： Edward S. Mumby , John D. Jeter
CPC分类号： E21B47/18 , E21B47/185
摘要： A monostable valve for insertion in a drill string used in forming a borehole such as an oil well. In an open position, the valve vents drilling fluid flowing in the drill string to an annulus in the borehole for return flow to the surface, thus generating a surface-detectable negative fluid-pressure pulse. A valve closure member is supported for horizontal movement to provide significant isolation from vertical accelerations occurring during drilling, and the closure member and associated valve seat are field replaceable. Primary power for valve actuation is drawn from the drilling-fluid hydraulic energy as controlled by a low-power solenoid-actuated pilot valve.
摘要翻译： 用于插入用于形成诸如油井的钻孔的钻柱中的单稳态阀。 在打开位置，阀将在钻柱中流动的钻井流体通向钻孔中的环形空间，以返回到表面，从而产生表面可检测的负流体压力脉冲。 支撑阀关闭构件用于水平运动，以提供与在钻孔期间发生的垂直加速度的显着隔离，并且关闭构件和相关联的阀座是现场可更换的。 用于阀致动的主要功率来自由低功率电磁致动先导阀控制的钻井液体液压能量。
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公开(公告)号：US4550392A
公开(公告)日：1985-10-29
申请号：US355921
申请日：1982-03-08
申请人： Edward S. Mumby
发明人： Edward S. Mumby
CPC分类号： E21B47/187
摘要： Apparatus for sending pressure pulses through drilling fluid in a drill string in a well bore includes an assembly adapted to be lowered from the surface through the drill string to a position adjacent the lower end of the drill string. The external dimension of the assembly is substantially less than that of the internal diameter of the drill string, so there is always a substantial clearance between the assembly exterior and the drill string interior to permit a substantial flow of drilling fluid down the drill string, past the assembly, through a drill bit, and into an annular space between the drill string exterior and the well bore. The assembly includes an internal bore to permit drilling fluid to flow through the assembly. Means are provided for intermittently restricting flow of drilling fluid through the assembly bore to send the pressure pulses to the surface in response to the magnitude of a downhole condition to be measured. The assembly includes means to permit it to be retrieved by a wire line from the surface and without removing the drill string from the well bore.
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公开(公告)号：US07489591B2
公开(公告)日：2009-02-10
申请号：US11417386
申请日：2006-05-04
申请人： Edward S. Mumby
发明人： Edward S. Mumby
IPC分类号： E21B47/18
CPC分类号： E21B47/18
摘要： An apparatus for detecting mud pulse telemetry signals includes a differential transducer. In various exemplary embodiments, a high-pressure side of the differential transducer is in fluid communication with either drilling fluid in a standpipe (which is in fluid communication with drilling fluid in the borehole) or a gas chamber of a pulsation dampener. Exemplary embodiments typically further include a pressure delay module in fluid communication with the low-pressure side of the differential transducer and the gas chamber of the pulsation dampener. The invention is intended to advantageously improve the reliability and bandwidth of mud pulse telemetry communications in oilfield drilling applications.
摘要翻译： 用于检测泥浆脉冲遥测信号的装置包括差分换能器。 在各种示例性实施例中，差动换能器的高压侧与立管（与钻孔中的钻井流体流体连通）或脉动阻尼器的气室中的钻井流体流体连通。 示例性实施例通常还包括与差动换能器的低压侧和脉动阻尼器的气室流体连通的压力延迟模块。 本发明旨在有利地提高油田钻井应用中泥浆脉冲遥测通信的可靠性和带宽。
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9.发明授权Well logging apparatus having a removable sleeve for sealing and protecting multiple antenna arrays 失效测井装置具有用于密封和保护多个天线阵列的可移除套筒
公开(公告)号：US5563512A
公开(公告)日：1996-10-08
申请号：US259638
申请日：1994-06-14
申请人： Edward S. Mumby
发明人： Edward S. Mumby
CPC分类号： G01V3/30
摘要： A well logging apparatus is disclosed having an elongate body supporting a plurality of antenna coils housed in recesses formed on the body. A sleeve covers the segment of the body containing the antenna recesses and seals the antennas from borehole fluids. Electronics compartments formed in the body for housing signal conditioning circuitry are likewise sealed by the sleeve. The sleeve includes slotted regions filled with a sealant, the slotted regions being disposed about the antenna coils and providing an electromagnetically transparent window through the sleeve.
摘要翻译： 公开了测井装置，其具有支撑容纳在形成在主体上的凹部中的多个天线线圈的细长主体。 套筒覆盖包含天线凹槽的主体部分，并将天线与钻孔流体密封。 形成在壳体信号调节电路的主体中的电子室同样由套管密封。 套管包括填充有密封剂的开槽区域，开槽区域围绕天线线圈布置并且通过套筒提供电磁透明窗口。
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公开(公告)号：US4699352A
公开(公告)日：1987-10-13
申请号：US778707
申请日：1985-09-23
申请人： Edward S. Mumby
发明人： Edward S. Mumby
IPC分类号： E21B47/18 , F16K31/04 , F16K31/124
CPC分类号： E21B47/187 , E21B47/18
摘要： Apparatus for sending pressure pulses through drilling fluid in a drill string in a well bore includes an assembly adapted to be lowered from the surface through the drill string to a position adjacent the lower end of the drill string. The external dimension of the assembly is substantially less than that of the internal diameter of the drill string, so there is always a substantial clearance between the assembly exterior and the drill string interior to permit a substantial flow of drilling fluid down the drill string, past the assembly, through a drill bit, and into an annular space between the drill string exterior and the well bore. The assembly includes an internal bore to permit drilling fluid to flow through the assembly. Means are provided for intermittently restricting flow of drilling fluid through the assembly bore to send the pressure pulses to the surface in response to the magnitude of a downhole condition to be measured. The assembly includes means to permit it to be retrieved by a wire line from the surface and without removing the drill string from the well bore.
摘要翻译： 用于通过井筒中的钻柱中的钻井液将压力脉冲发送到井眼中的装置包括适于从表面通过钻柱下降到与钻柱的下端相邻的位置的组件。 组件的外部尺寸基本上小于钻柱的内径的外部尺寸，因此在组件外部和钻柱内部之间总是存在基本上的间隙，以允许钻井液体沿着钻柱的大量流动过去 组件通过钻头，并进入钻柱外部和井眼之间的环形空间。 组件包括允许钻井流体流过组件的内孔。 提供了用于间歇地限制钻井流体通过组件孔的装置，以响应于要测量的井下条件的大小将压力脉冲发送到表面。 组件包括允许其从表面通过电线将其取出并且不从钻井孔中移除钻柱的装置。
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