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公开(公告)号：US07607896B2
公开(公告)日：2009-10-27
申请号：US11463836
申请日：2006-08-10
申请人： John M. Leuthen , Dick L. Knox , Tom G. Yohanan , Jerald R. Rider
发明人： John M. Leuthen , Dick L. Knox , Tom G. Yohanan , Jerald R. Rider
IPC分类号： F04B49/06
CPC分类号： H02H7/1222
摘要： Systems and methods for providing ride-through for interruptions in the power supplied to drives that are used to control equipment such as downhole submersible pumps. In one embodiment, a variable speed drive includes converter and inverter sections, a capacitor bank and a control system. The drive shuts down the converter section upon detecting a disruption in the AC input power and continues to generate output power by drawing on the energy stored in the capacitor bank. When the AC input power returns (or begins to return) to normal, the drive resumes operation of the converter section in a controlled manner (e.g., by presetting the firing angle of the SCR's in the converter to match the voltage across the capacitor bank.) The drive thereby limits the current that recharges the capacitor bank and prevents sudden inrushes of current that could damage the drive.
摘要翻译： 用于提供传递中断功能的系统和方法，用于提供给用于控制诸如井下潜水泵的设备的驱动器。 在一个实施例中，变速驱动器包括转换器和逆变器部分，电容器组和控制系统。 检测到AC输入功率中断后，驱动器关闭转换器部分，并通过利用存储在电容器组中的能量继续产生输出功率。 当交流输入电源返回（或开始返回）正常时，驱动器以受控的方式恢复转换器部分的操作（例如，通过预设转换器中SCR的触发角度来匹配电容器组两端的电压。 ）驱动器因此限制了对电容器组进行充电的电流，并防止可能损坏驱动器的电流突然损坏。
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2.发明授权公开(公告)号：US08141646B2
公开(公告)日：2012-03-27
申请号：US12486121
申请日：2009-06-17
申请人： Robert D. Allen , John Michael Leuthen , Dick L. Knox , Jerald R. Rider , Tom G. Yohanan , Brown L. Wilson , Bryan D. Schulze
发明人： Robert D. Allen , John Michael Leuthen , Dick L. Knox , Jerald R. Rider , Tom G. Yohanan , Brown L. Wilson , Bryan D. Schulze
IPC分类号： E21B43/00
CPC分类号： E21B43/128 , F04D9/001 , F04D13/10 , F04D15/0066 , F04D15/0088 , F04D15/0209
摘要： A device and method can detect, and also break, an occurrence of gas lock in an electrical submersible pump assembly in a well bore based upon surface or downhole data without the need for operator intervention. To detect an occurrence of gas lock, an instantaneous value is monitored using a sensor. Then a controller compares the instantaneous value to a threshold value over a predetermined duration to thereby detect the occurrence of gas lock in the electrical submersible pump assembly. Sensors can include, for example, a differential pressure gauge, a pressure gage located in a pump stage located toward the inlet, a fluid temperature sensor located toward the discharge, a free gas detector located near the pump discharge, an electrical resistivity gage, a flow meter located within surface production tubing, and a vibration sensor attached to a tubing string to measure a vibration signature.
摘要翻译： 一种装置和方法可以基于表面或井下数据来检测并破坏井下电潜泵组件中气锁的发生，而不需要操作员干预。 为了检测气体锁定的发生，使用传感器来监视瞬时值。 然后，控制器在预定持续时间内将瞬时值与阈值进行比较，从而检测电潜泵组件中的气锁的发生。 传感器可以包括例如差压表，位于朝向入口的泵级中的压力表，位于排出口的流体温度传感器，位于泵排放附近的自由气体检测器，电阻率计， 位于表面生产管道内的流量计，以及连接到油管柱以测量振动特征的振动传感器。
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3.发明申请System, Method and Program Product For Cable Loss Compensation In An Electrical Submersible Pump System 有权电力潜水泵系统中电缆损耗补偿的系统，方法和程序产品公开(公告)号：US20090256519A1
公开(公告)日：2009-10-15
申请号：US12400405
申请日：2009-03-09
CPC分类号： E21B43/128 , H02P23/08 , H02P27/047
摘要： An electrical submersible pumping (ESP) system can include a pump located in a wellbore, a motor attached to the pump, a power source located at the surface, a cable electrically coupling the power source and the motor, and a current sensor. The ESP system can also include a controller communicating with the current sensor to calculate a voltage drop associated with the cable responsive to an impedance of the cable. The controller can also control a power source output voltage responsive to the calculated voltage drop. For example, the controller can adjust the power source output voltage to minimize a cable current while maintaining a minimum motor voltage. The controller can also control a motor shaft speed by changing a power source output voltage frequency to compensate for changing slip and adjust the power source output voltage to minimize the cable current while maintaining a minimum motor voltage.
摘要翻译： 电潜泵（ESP）系统可以包括位于井眼中的泵，连接到泵的马达，位于表面的动力源，电耦合电源和马达的电缆以及电流传感器。 ESP系统还可以包括与当前传感器通信的控制器，以响应于电缆的阻抗来计算与电缆相关联的电压降。 控制器还可以响应于所计算的电压降来控制电源输出电压。 例如，控制器可以调节电源输出电压以最小化电缆电流，同时保持最小的电机电压。 控制器还可以通过改变电源输出电压频率来控制电机轴转速，以补偿变更滑差，并调整电源输出电压，以尽量减少电缆电流，同时保持最小的电机电压。
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4.发明申请Systems and Methods for Reducing Distortion in a Power Source Using an Active Harmonics Filter 失效使用主动谐波滤波器减少电源失真的系统和方法公开(公告)号：US20090243398A1
公开(公告)日：2009-10-01
申请号：US12058030
申请日：2008-03-28
CPC分类号： H02J3/1842 , Y02E40/22 , Y10T307/25
摘要： Systems and methods for reducing harmonic distortion in a power system resulting from non-linear loading on the power system. The power at an interface with a power source is measured, and then distortion in the waveforms of the supplied power is identified. Cancellation signals which cancel all or part of the distortion are then generated and injected at the interface. In one embodiment, the power is sampled to determine the waveform, and then a Fast Fourier Transform is performed on the waveform to convert it to the frequency domain. Harmonics of the fundamental frequency can then be identified, and conjugates of the harmonics generated. An inverse Fast Fourier Transform is performed on the conjugates to generate a signal which is amplified to produce the cancellation signal.
摘要翻译： 用于减少由电力系统上非线性负载引起的电力系统谐波失真的系统和方法。 测量与电源的接口处的功率，然后识别供电电源的波形失真。 然后在接口处产生并注入取消全部或部分失真的消除信号。 在一个实施例中，对功率进行采样以确定波形，然后对波形执行快速傅立叶变换以将其转换为频域。 然后可以识别基频的谐波，并产生谐波的共轭。 对共轭进行反向快速傅立叶变换以产生被放大以产生消除信号的信号。
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公开(公告)号：US20070263331A1
公开(公告)日：2007-11-15
申请号：US11463836
申请日：2006-08-10
申请人： John M. Leuthen , Dick L. Knox , Tom G. Yohanan , Jerald R. Rider
发明人： John M. Leuthen , Dick L. Knox , Tom G. Yohanan , Jerald R. Rider
IPC分类号： H02H3/00
CPC分类号： H02H7/1222
摘要： Systems and methods for providing ride-through for interruptions in the power supplied to drives that are used to control equipment such as downhole submersible pumps. In one embodiment, a variable speed drive includes converter and inverter sections, a capacitor bank and a control system. The drive shuts down the converter section upon detecting a disruption in the AC input power and continues to generate output power by drawing on the energy stored in the capacitor bank. When the AC input power returns (or begins to return) to normal, the drive resumes operation of the converter section in a controlled manner (e.g., by presetting the firing angle of the SCR's in the converter to match the voltage across the capacitor bank.) The drive thereby limits the current that recharges the capacitor bank and prevents sudden inrushes of current that could damage the drive.
摘要翻译： 用于提供传递中断功能的系统和方法，用于提供给用于控制诸如井下潜水泵的设备的驱动器。 在一个实施例中，变速驱动器包括转换器和逆变器部分，电容器组和控制系统。 检测到AC输入功率中断后，驱动器关闭转换器部分，并通过利用存储在电容器组中的能量继续产生输出功率。 当交流输入电源返回（或开始返回）正常时，驱动器以受控的方式恢复转换器部分的操作（例如，通过预设转换器中SCR的触发角度来匹配电容器组两端的电压。 ）驱动器因此限制了对电容器组进行充电的电流，并防止可能损坏驱动器的电流突然损坏。
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6.发明申请Systems and Methods for Reducing Pump Downtime by Determining Rotation Speed Using a Variable Speed Drive 有权通过使用变速驱动确定转速来减少停泵时间的系统和方法公开(公告)号：US20080247880A1
公开(公告)日：2008-10-09
申请号：US12061241
申请日：2008-04-02
CPC分类号： E21B43/128 , F04D15/0066
摘要： Systems and methods for using variable speed drives to restart downhole submersible pump motors. In one embodiment, a downhole pump is controlled using a variable speed drive that includes a control system configured to detect interruptions in the operation of the pump system. After an interruption that requires the restart of the pump motor, the control system determines the reverse rotational speed of the pump motor and restarts the motor when this speed is sufficiently low. The control system may be configured to reduce the output voltage of the variable speed drive and sweep through a range of output frequencies to determine the frequency at which the current drawn by the motor is lowest. This is the frequency at which the drive's output matches the speed of the motor and the apparent impedance of the motor is highest. When the speed is low enough, the motor is restarted.
摘要翻译： 使用变速驱动器重新启动井下潜水泵电机的系统和方法。 在一个实施例中，使用变速驱动器控制井下泵，所述变速驱动器包括被配置为检测泵系统的操作中的中断的控制系统。 在需要重新启动泵电机的中断之后，控制系统确定泵电机的反转速度，并在该速度足够低时重启电动机。 控制系统可以被配置为减小变速驱动器的输出电压并且扫过一定范围的输出频率以确定由电动机汲取的电流最低的频率。 这是驱动器的输出与电机速度匹配的频率，电机的视在阻抗最高。 当速度足够低时，电机重启。
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7.发明授权System, method and program product for cable loss compensation in an electrical submersible pump system 有权电潜泵系统电缆损耗补偿的系统，方法和程序产品公开(公告)号：US08314583B2
公开(公告)日：2012-11-20
申请号：US12400405
申请日：2009-03-09
IPC分类号： H02P7/00
CPC分类号： E21B43/128 , H02P23/08 , H02P27/047
摘要： An electrical submersible pumping (ESP) system can include a pump located in a wellbore, a motor attached to the pump, a power source located at the surface, a cable electrically coupling the power source and the motor, and a current sensor. The ESP system can also include a controller communicating with the current sensor to calculate a voltage drop associated with the cable responsive to an impedance of the cable. The controller can also control a power source output voltage responsive to the calculated voltage drop. For example, the controller can adjust the power source output voltage to minimize a cable current while maintaining a minimum motor voltage. The controller can also control a motor shaft speed by changing a power source output voltage frequency to compensate for changing slip and adjust the power source output voltage to minimize the cable current while maintaining a minimum motor voltage.
摘要翻译： 电潜泵（ESP）系统可以包括位于井眼中的泵，连接到泵的马达，位于表面的动力源，电耦合电源和马达的电缆以及电流传感器。 ESP系统还可以包括与当前传感器通信的控制器，以响应于电缆的阻抗来计算与电缆相关联的电压降。 控制器还可以响应于所计算的电压降来控制电源输出电压。 例如，控制器可以调节电源输出电压以最小化电缆电流，同时保持最小的电机电压。 控制器还可以通过改变电源输出电压频率来控制电机轴转速，以补偿变更滑差，并调整电源输出电压，以尽量减少电缆电流，同时保持最小的电机电压。
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8.发明授权Systems and methods for reducing pump downtime by determining rotation speed using a variable speed drive 有权通过使用变速驱动器确定转速来减少停泵时间的系统和方法公开(公告)号：US08092190B2
公开(公告)日：2012-01-10
申请号：US12061241
申请日：2008-04-02
CPC分类号： E21B43/128 , F04D15/0066
摘要： Systems and methods for using variable speed drives to restart downhole submersible pump motors. In one embodiment, a downhole pump is controlled using a variable speed drive that includes a control system configured to detect interruptions in the operation of the pump system. After an interruption that requires the restart of the pump motor, the control system determines the reverse rotational speed of the pump motor and restarts the motor when this speed is sufficiently low. The control system may be configured to reduce the output voltage of the variable speed drive and sweep through a range of output frequencies to determine the frequency at which the current drawn by the motor is lowest. This is the frequency at which the drive's output matches the speed of the motor and the apparent impedance of the motor is highest. When the speed is low enough, the motor is restarted.
摘要翻译： 使用变速驱动器重新启动井下潜水泵电机的系统和方法。 在一个实施例中，使用变速驱动器控制井下泵，所述变速驱动器包括被配置为检测泵系统的操作中的中断的控制系统。 在需要重新启动泵电机的中断之后，控制系统确定泵电机的反转速度，并在该速度足够低时重启电动机。 控制系统可以被配置为减小变速驱动器的输出电压并且扫过一定范围的输出频率以确定由电动机汲取的电流最低的频率。 这是驱动器的输出与电机速度匹配的频率，电机的视在阻抗最高。 当速度足够低时，电机重启。
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9.发明授权Systems and methods for reducing distortion in a power source using an active harmonics filter 失效使用有源谐波滤波器减少电源失真的系统和方法公开(公告)号：US07834643B2
公开(公告)日：2010-11-16
申请号：US12058030
申请日：2008-03-28
IPC分类号： G01R23/20
CPC分类号： H02J3/1842 , Y02E40/22 , Y10T307/25
摘要： Systems and methods for reducing harmonic distortion in a power system resulting from non-linear loading on the power system. The power at an interface with a power source is measured, and then distortion in the waveforms of the supplied power is identified. Cancellation signals which cancel all or part of the distortion are then generated and injected at the interface. In one embodiment, the power is sampled to determine the waveform, and then a Fast Fourier Transform is performed on the waveform to convert it to the frequency domain. Harmonics of the fundamental frequency can then be identified, and conjugates of the harmonics generated. An inverse Fast Fourier Transform is performed on the conjugates to generate a signal which is amplified to produce the cancellation signal.
摘要翻译： 用于减少由电力系统上非线性负载引起的电力系统谐波失真的系统和方法。 测量与电源的接口处的功率，然后识别供电电源的波形失真。 然后在接口处产生并注入取消全部或部分失真的消除信号。 在一个实施例中，对功率进行采样以确定波形，然后对波形执行快速傅立叶变换以将其转换为频域。 然后可以识别基频的谐波，并产生谐波的共轭。 对共轭进行反向快速傅立叶变换以产生被放大以产生消除信号的信号。
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10.发明申请公开(公告)号：US20090250210A1
公开(公告)日：2009-10-08
申请号：US12486121
申请日：2009-06-17
申请人： Robert D. Allen , John Michael Leuthen , Dick L. Knox , Jerald R. Rider , Tom G. Yohanan , Brown L. Wilson , Bryan D. Schulze
发明人： Robert D. Allen , John Michael Leuthen , Dick L. Knox , Jerald R. Rider , Tom G. Yohanan , Brown L. Wilson , Bryan D. Schulze
CPC分类号： E21B43/128 , F04D9/001 , F04D13/10 , F04D15/0066 , F04D15/0088 , F04D15/0209
摘要： A device and method can detect, and also break, an occurrence of gas lock in an electrical submersible pump assembly in a well bore based upon surface or downhole data without the need for operator intervention. To detect an occurrence of gas lock, an instantaneous value is monitored using a sensor. Then a controller compares the instantaneous value to a threshold value over a predetermined duration to thereby detect the occurrence of gas lock in the electrical submersible pump assembly. Sensors can include, for example, a differential pressure gauge, a pressure gage located in a pump stage located toward the inlet, a fluid temperature sensor located toward the discharge, a free gas detector located near the pump discharge, an electrical resistivity gage, a flow meter located within surface production tubing, and a vibration sensor attached to a tubing string to measure a vibration signature.
摘要翻译： 一种装置和方法可以基于表面或井下数据来检测并破坏井下电潜泵组件中气锁的发生，而不需要操作员干预。 为了检测气体锁定的发生，使用传感器来监视瞬时值。 然后，控制器在预定持续时间内将瞬时值与阈值进行比较，从而检测电潜泵组件中的气锁的发生。 传感器可以包括例如差压表，位于朝向入口的泵级中的压力表，位于排出口的流体温度传感器，位于泵排放附近的自由气体检测器，电阻率计， 位于表面生产管道内的流量计，以及连接到油管柱以测量振动特征的振动传感器。
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