公开(公告)号：US20140125384A1

公开(公告)日：2014-05-08

申请号：US14151813

申请日：2014-01-10

Applicant: Schlumberger Technology Corporation

Inventor： Abderrhamane Ounadjela ,  Jacques Jundt ,  Olivier Moyal ,  Henri-Pierre Valero ,  Sandip Bose

IPC: H02M3/156

CPC classification number: H02M3/1563 ,  E21B47/00 ,  G01V1/159 ,  G01V1/42 ,  H04B11/00

Abstract: Systems, methods, and apparatus to drive reactive loads are disclosed. An example apparatus to drive a reactive load includes a reactive component in circuit with the reactive load, a first switching element in circuit with the reactive load to selectively hold the reactive load in a first energy state and to selectively allow the reactive load to change from the first energy state to a second energy state, a second switching element in circuit with the reactive load to selectively hold the reactive load in the second energy state and to selectively allow the reactive load to change from the second energy state to the first energy state, and a controller to detect a current in the reactive load, and to control the first and second switching elements to hold the reactive load in the first or the second energy state when the current traverses a threshold.

Abstract translation: 公开了用于驱动无功负载的系统，方法和装置。 驱动无功负载的示例性装置包括具有无功负载的电路中的无功分量，具有无功负载的电路中的第一开关元件，以选择性地将无功负载保持在第一能量状态并且选择性地允许无功负载从 第一能量状态到第二能量状态，第二开关元件在电路中具有无功负载以选择性地将无功负载保持在第二能量状态，并且选择性地允许无功负载从第二能量状态改变到第一能量状态 以及控制器，用于检测无功负载中的电流，并且当电流横穿阈值时，控制第一和第二开关元件将无功负载保持在第一或第二能量状态。

公开(公告)号：US20150345289A1

公开(公告)日：2015-12-03

申请号：US14821318

申请日：2015-08-07

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Christopher Harrison ,  Chloe Coleou ,  Bill Grant ,  Jacques Jundt

IPC: E21B49/08 ,  G01N29/02 ,  G01N27/74

CPC classification number: E21B49/08 ,  E21B2049/085 ,  G01N9/002 ,  G01N27/74 ,  G01N29/02

Abstract: Devices, methods and systems for determining one or more properties of at least one fluid sample. A tube configured to receive the at least one fluid sample wherein the tube is placed in a pressure housing. Further, an excitation source configured to generate vibration of the tube whereby a circulation of an electrical current along a portion of the tube is subjected to at least one magnetic field produced by at least one magnet. Further still, at least one vibration sensor that converts vibrations of the tube into a measurement signal. Finally, a processor that receives the measurement signal determines a resonant frequency from the measurement signal using a frequency measuring device to determine a property of the one or more properties of the at least one sample fluid.

Abstract translation: 用于确定至少一种流体样品的一种或多种性质的装置，方法和系统。 配置成接收所述至少一个流体样品的管，其中所述管被放置在压力壳体中。 此外，被配置为产生管的振动的激励源，由此沿着管的一部分的电流的循环受到由至少一个磁体产生的至少一个磁场。 此外，还有至少一个将管的振动转换为测量信号的振动传感器。 最后，接收测量信号的处理器使用频率测量装置从测量信号确定谐振频率，以确定至少一个样品流体的一个或多个特性的性质。

公开(公告)号：US10301938B2

公开(公告)日：2019-05-28

申请号：US14821318

申请日：2015-08-07

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Christopher Harrison ,  Chloe Coleou ,  Bill Grant ,  Jacques Jundt

IPC: E21B49/08 ,  G01N29/02 ,  G01N27/74 ,  G01N9/00

Abstract: Devices, methods and systems for determining one or more properties of at least one fluid sample. A tube configured to receive the at least one fluid sample wherein the tube is placed in a pressure housing. Further, an excitation source configured to generate vibration of the tube whereby a circulation of an electrical current along a portion of the tube is subjected to at least one magnetic field produced by at least one magnet. Further still, at least one vibration sensor that converts vibrations of the tube into a measurement signal. Finally, a processor that receives the measurement signal determines a resonant frequency from the measurement signal using a frequency measuring device to determine a property of the one or more properties of the at least one sample fluid.

公开(公告)号：US09641072B2

公开(公告)日：2017-05-02

申请号：US14151813

申请日：2014-01-10

Applicant: Schlumberger Technology Corporation

Inventor： Abderrhamane Ounadjela ,  Jacques Jundt ,  Olivier Moyal ,  Henri-Pierre Valero ,  Sandip Bose

IPC: H02M3/156 ,  G01V1/02 ,  G01V1/42 ,  H04B11/00 ,  E21B47/00

CPC classification number: H02M3/1563 ,  E21B47/00 ,  G01V1/159 ,  G01V1/42 ,  H04B11/00

Abstract: Systems, methods, and apparatus to drive reactive loads are disclosed. An example apparatus to drive a reactive load includes a reactive component in circuit with the reactive load, a first switching element in circuit with the reactive load to selectively hold the reactive load in a first energy state and to selectively allow the reactive load to change from the first energy state to a second energy state, a second switching element in circuit with the reactive load to selectively hold the reactive load in the second energy state and to selectively allow the reactive load to change from the second energy state to the first energy state, and a controller to detect a current in the reactive load, and to control the first and second switching elements to hold the reactive load in the first or the second energy state when the current traverses a threshold.

公开(公告)号：US09143026B2

公开(公告)日：2015-09-22

申请号：US14199175

申请日：2014-03-06

Applicant: Schlumberger Technology Corporation

Inventor： Kevin L. Hiles ,  Robert A. Adolph ,  Jacques Jundt ,  Vincent Ernst

IPC: E21B49/00 ,  H02M1/00 ,  G01V5/10 ,  G01V5/12

CPC classification number: H02M1/00 ,  E21B47/02216 ,  E21B47/1015 ,  E21B49/00 ,  G01V5/10 ,  G01V5/12 ,  G05F1/10 ,  H02M7/10 ,  H02M2001/0003 ,  H02M2001/0012 ,  H02M2001/0025

Abstract: A method for regulating output of a high voltage generator includes monitoring a voltage output of the generator and comparing it to a voltage setpoint to generate an error signal. A load on the generator is monitored to generate a load signal. The load signal is conducted to a feedforward signal generator. The feedforward signal generator is configured to produce a feedforward signal corresponding to the load and to at least one parameter related to an output impedance of the high voltage generator. The error signal is conducted to a high voltage regulation loop. The control loop output and the feedforward signal generator output are coupled to a driver for the high voltage generator.

Abstract translation: 用于调节高压发生器的输出的方法包括监测发电机的电压输出并将其与电压设定值进行比较以产生误差信号。 监视发电机上的负载以产生负载信号。 负载信号被传送到前馈信号发生器。 前馈信号发生器被配置为产生对应于负载的前馈信号和与高电压发生器的输出阻抗有关的至少一个参数。 误差信号传导到高压调节回路。 控制回路输出和前馈信号发生器输出耦合到高电压发生器的驱动器。

公开(公告)号：US20150194871A1

公开(公告)日：2015-07-09

申请号：US14199175

申请日：2014-03-06

Applicant: Schlumberger Technology Corporation

Inventor： Kevin L. Hiles ,  Robert A. Adolph ,  Jacques Jundt ,  Vincent Ernst

IPC: H02M1/00 ,  G01V5/12 ,  G01V5/10 ,  E21B49/00

CPC classification number: H02M1/00 ,  E21B47/02216 ,  E21B47/1015 ,  E21B49/00 ,  G01V5/10 ,  G01V5/12 ,  G05F1/10 ,  H02M7/10 ,  H02M2001/0003 ,  H02M2001/0012 ,  H02M2001/0025

Abstract: A method for regulating output of a high voltage generator includes monitoring a voltage output of the generator and comparing it to a voltage setpoint to generate an error signal. A load on the generator is monitored to generate a load signal. The load signal is conducted to a feedforward signal generator. The feedforward signal generator is configured to produce a feedforward signal corresponding to the load and to at least one parameter related to an output impedance of the high voltage generator. The error signal is conducted to a high voltage regulation loop. The control loop output and the feedforward signal generator output are coupled to a driver for the high voltage generator.

Abstract translation: 用于调节高压发生器的输出的方法包括监测发电机的电压输出并将其与电压设定值进行比较以产生误差信号。 监视发电机上的负载以产生负载信号。 负载信号被传送到前馈信号发生器。 前馈信号发生器被配置为产生对应于负载的前馈信号和与高电压发生器的输出阻抗有关的至少一个参数。 误差信号传导到高压调节回路。 控制回路输出和前馈信号发生器输出耦合到高电压发生器的驱动器。