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公开(公告)号：US20100182161A1
公开(公告)日：2010-07-22
申请号：US12090105
申请日：2007-04-28
申请人： Carl A. Robbins , Eugene Linyaev , Li Gao
发明人： Carl A. Robbins , Eugene Linyaev , Li Gao
IPC分类号： G01V3/00
CPC分类号： G01V11/002 , E21B47/122 , E21B47/14
摘要： Various electromagnetic LWD telemetry systems are disclosed having a wireless repeater positioned on or near the seabed. The wireless repeater receives and demodulates electromagnetic uplink signals and retransmits the uplink signals from the seabed as electromagnetic or acoustic signals. A receiver on the drilling platform or suspended from the water's surface receives the uplink signal and forwards it to a facility for processing and storage. In some embodiments, the wireless repeater takes the form of a sub threaded inline with the drill string with an electromagnetic signal sensor positioned inside the drill string. In other embodiments, the wireless repeater takes the form of a unit that rests on the seabed with electromagnetic signal sensors inserted into the sea bottom.
摘要翻译： 公开了各种电磁LWD遥测系统，其具有位于海床上或附近的无线中继器。 无线中继器接收和解调电磁上行信号，并将来自海底的上行链路信号作为电磁信号或声信号进行重传。 钻井平台上的接收器或从水面悬吊的接收器接收上行链路信号并将其转发到设备进行处理和存储。 在一些实施例中，无线中继器采用位于钻柱内部的电磁信号传感器与钻柱一起进行子螺纹内联的形式。 在其他实施例中，无线中继器采用放置在海床上的单元的形式，其中电磁信号传感器插入海底。
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公开(公告)号：US08193946B2
公开(公告)日：2012-06-05
申请号：US12065529
申请日：2006-11-10
IPC分类号： H04H9/00
CPC分类号： E21B47/16
摘要： Acoustic telemetry devices and methods that provide directional detection. In one embodiment, a disclosed acoustic telemetry device comprises at least two acoustic sensors and an electronics module. The electronics module combines the detection signals from the acoustic sensors to obtain a combined signal that substantially excludes signals propagating in a direction opposite to the communication signal. The disclosed systems and methods can be trained in the field and will readily accommodate an irregular and unknown signal transmission medium between the two acoustic sensors.
摘要翻译： 声学遥测装置和方法提供方向检测。 在一个实施例中，公开的声学遥测装置包括至少两个声学传感器和电子模块。 电子模块组合来自声学传感器的检测信号，以获得基本上排除在与通信信号相反的方向传播的信号的组合信号。 所公开的系统和方法可以在现场进行训练，并且将容易地适应两个声学传感器之间的不规则和未知的信号传输介质。
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公开(公告)号：US09477008B2
公开(公告)日：2016-10-25
申请号：US12918552
申请日：2009-08-13
申请人： Carl A. Robbins , Li Gao
发明人： Carl A. Robbins , Li Gao
CPC分类号： G01V11/002 , E21B47/16
摘要： Transmitting acoustic signals from a wellbore. At least some of the illustrative embodiments are methods including transmitting an acoustic signal comprising downhole data, receiving the acoustic signal (the receiving by a receiver disposed within the internal diameter of a casing in the wellbore) converting the acoustic signal to a corresponding first electromagnetic signal, and inducing a second electromagnetic signal in a tubing responsive to the first electromagnetic signal.
摘要翻译： 从井筒传输声信号。 至少一些说明性实施例是包括发送包括井下数据的声信号的方法，接收声信号（由设置在井眼中的壳体的内径内的接收器的接收）将声信号转换为对应的第一电磁信号 并且响应于第一电磁信号在管道中引起第二电磁信号。
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公开(公告)号：US20110164468A1
公开(公告)日：2011-07-07
申请号：US12918552
申请日：2009-08-13
申请人： Carl A. Robbins , Li Gao
发明人： Carl A. Robbins , Li Gao
CPC分类号： G01V11/002 , E21B47/16
摘要： Transmitting acoustic signals from a wellbore. At least some of the illustrative embodiments are methods including transmitting an acoustic signal comprising downhole data, receiving the acoustic signal (the receiving by a receiver disposed within the internal diameter of a casing in the wellbore) converting the acoustic signal to a corresponding first electromagnetic signal, and inducing a second electromagnetic signal in a tubing responsive to the first electromagnetic signal.
摘要翻译： 从井筒传输声信号。 至少一些说明性实施例是包括发送包括井下数据的声信号的方法，接收声信号（由设置在井眼中的壳体的内径内的接收器的接收）将声信号转换为对应的第一电磁信号 并且响应于第一电磁信号在管道中引起第二电磁信号。
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公开(公告)号：US20080285386A1
公开(公告)日：2008-11-20
申请号：US12065529
申请日：2006-11-10
CPC分类号： E21B47/16
摘要： Acoustic telemetry devices and methods that provide directional detection. In one embodiment, a disclosed acoustic telemetry device comprises at least two acoustic sensors and an electronics module. The electronics module combines the detection signals from the acoustic sensors to obtain a combined signal that substantially excludes signals propagating in a direction opposite to the communication signal The disclosed systems and methods can be trained in the field and will readily accommodate an irregular and unknown signal transmission medium between the two acoustic sensors
摘要翻译： 声学遥测装置和方法提供方向检测。 在一个实施例中，所公开的声学遥测装置包括至少两个声学传感器和电子模块。 电子模块组合来自声学传感器的检测信号，以获得基本排除在与通信信号相反的方向上传播的信号的组合信号。所公开的系统和方法可以在现场进行训练，并且将容易地适应不规则和未知的信号传输 介于两个声传感器之间
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公开(公告)号：US09645114B2
公开(公告)日：2017-05-09
申请号：US14391612
申请日：2012-05-03
申请人： Li Gao , Michael T. Pelletier , Mark A. Proett
发明人： Li Gao , Michael T. Pelletier , Mark A. Proett
IPC分类号： G01V3/00 , E21B49/00 , G01N27/74 , E21B47/06 , E21B47/10 , G01N9/00 , G01N11/16 , G01N33/28 , E21B49/08
CPC分类号： G01N27/74 , E21B47/06 , E21B47/102 , E21B49/00 , E21B49/08 , E21B2049/085 , G01N9/002 , G01N11/16 , G01N33/2823 , G01N2009/006
摘要： An instrument for determining fluid properties is provided. The instrument (300) includes a tube (304) receiving the fluid, a single magnet (302) attached to the tube, and a single coil (306) wound around the single magnet. The single coil is coupled to a pulse current source (312) and receives a pulse current that creates a magnetic field in the single coil, the created magnetic field interacting with the single magnet to drive the tube to vibrate. The instrument further includes a detector (306) coupled to the tube, wherein the detector is coupled to measurement circuitry (310) and detects properties of the tube as it vibrates, and the measurement circuitry determines the fluid properties based on the detected properties. The instrument also includes a housing (314) enclosing the tube, the single magnet, and the single coil wound around the single magnet.
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公开(公告)号：US09575199B2
公开(公告)日：2017-02-21
申请号：US14388193
申请日：2012-03-28
申请人： Wei Zhang , Lizheng Zhang , Li Gao , David Earl Ball
发明人： Wei Zhang , Lizheng Zhang , Li Gao , David Earl Ball
摘要： Disclosed is a downhole fluid resistivity sensor that includes a ceramic cylinder having a fluid-contacting surface, and at least four metal pins that penetrate a wall of the ceramic cylinder at axially-spaced locations. The pins are bonded to the ceramic to form a pressure seal. The sensor may include a circuit that injects current into a fluid via an outer two of the pins, and measures a resulting voltage via an inner two of the pins. The circuit may also provide an indication of fluid resistivity based at least in part on the resulting voltage. At each of the axially-spaced locations, a set of multiple pins may penetrate the wall to contact the fluid at circumferentially-spaced positions. The fluid-contacting surface may be an inner surface or an outer surface of the ceramic cylinder. A downhole fluid resistivity measurement method is also described.
摘要翻译： 公开了一种井下流体电阻率传感器，其包括具有流体接触表面的陶瓷圆筒，以及至少四个在轴向间隔开的位置处穿过陶瓷圆柱壁的金属销。 销钉结合到陶瓷上以形成压力密封。 传感器可以包括经由外部两个引脚将电流注入流体的电路，并且经由内部两个引脚测量所得到的电压。 该电路还可以至少部分地基于所得到的电压来提供流体电阻率的指示。 在每个轴向间隔的位置处，一组多个销可以穿透壁以在周向间隔的位置处接触流体。 流体接触表面可以是陶瓷圆筒的内表面或外表面。 还描述了井下流体电阻率测量方法。
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公开(公告)号：US20160327465A1
公开(公告)日：2016-11-10
申请号：US15108644
申请日：2014-03-25
发明人： James Masino , Li Gao
CPC分类号： G01N11/167 , E21B49/08 , E21B2049/085 , G01N11/16
摘要： A fluid is received into a sample tube. A processor causes an energy to be applied to the sample tube to induce vibration in the sample tube at a resonant frequency of the sample tube containing the fluid. The processor stops the supply of energy to the sample tube. The processor monitors an amplitude of the vibration of the sample tube as the amplitude of the vibrations diminish over a period of time. The processor uses the monitored amplitude to calculate an RF of the sample tube containing the fluid. The processor uses the calculated RF to calculate the viscosity of the fluid.
摘要翻译： 将流体接收到样品管中。 处理器将能量施加到样品管，以在包含流体的样品管的共振频率处引起样品管中的振动。 处理器停止向样品管供应能量。 当振动的振幅在一段时间内减小时，处理器监测样品管的振动的幅度。 处理器使用监测的幅度来计算包含流体的样品管的RF。 处理器使用计算的RF来计算流体的粘度。
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公开(公告)号：US09008977B2
公开(公告)日：2015-04-14
申请号：US13320311
申请日：2009-05-20
申请人： Li Gao
发明人： Li Gao
摘要： The density of a fluid is determined using a vibratory resonant densitometer in an environment. The densitometer includes a tubular sample cavity and other densitometer parts. The method includes measuring a plurality of parameters characterizing the environment. The method further includes adjusting a model of the sample cavity using the measured parameters. The method further includes receiving a sample fluid into the sample cavity. The method further includes vibrating the sample cavity to obtain a vibration signal. The method further includes calculating the density of the sample fluid using the model and the vibration signal.
摘要翻译： 在环境中使用振动谐振密度计确定流体的密度。 密度计包括管状样品腔和其他密度计部件。 该方法包括测量表征环境的多个参数。 该方法还包括使用所测量的参数调整样品腔的模型。 该方法还包括将样品流体接收到样品腔中。 该方法还包括振动样品腔以获得振动信号。 该方法还包括使用模型和振动信号计算样品流体的密度。
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10.发明授权公开(公告)号：US08581591B2
公开(公告)日：2013-11-12
申请号：US12668129
申请日：2008-06-11
申请人： Michael T. Pelletier , Li Gao
发明人： Michael T. Pelletier , Li Gao
IPC分类号： G01V3/18
CPC分类号： E21B49/10 , E21B47/102 , G01N27/74 , G01N33/2823
摘要： Determining an electrical property of a formation fluid. At least some of the illustrative embodiments are methods comprising drawing formation fluids into a tool within a borehole, applying a swept frequency electric field to the formation fluids by way of a first winding, inducing a current flow in a second winding based on the swept frequency electric field, and determining a property of the formation fluids based, at least in part, on the current flow in the second winding.
摘要翻译： 确定地层流体的电性质。 示例性实施例中的至少一些是包括将地层流体绘制到井眼内的工具中的方法，通过第一绕组将地震流体施加扫频频率电场，基于扫频来诱导第二绕组中的电流 至少部分地基于第二绕组中的电流流动来确定地层流体的性质。
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