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41. 发明授权

US11199242B2 Bit support assembly incorporating damper for high frequency torsional oscillation 有权
公开(公告)号：US11199242B2
公开(公告)日：2021-12-14
申请号：US16568789
申请日：2019-09-12
申请人： Andreas Hohl , Sasa Mihajlovic
发明人： Andreas Hohl , Sasa Mihajlovic
IPC分类号： E21B17/042 , F16F15/12 , E21B47/16 , G01H1/10
摘要： Methods and systems for damping torsional oscillations of downhole systems are described. The systems include a downhole string, a bit support assembly configured to support and receive a disintegration device, wherein the disintegration device is disposed on an end of the downhole string and mounted to the bit support assembly, and a damping system configured at least one of on and in the bit support assembly, the damping system comprising at least one damper element arranged in contact with a portion of the bit support assembly.

42. 发明申请

US20200018377A1 BIT SUPPORT ASSEMBLY INCORPORATING DAMPER FOR HIGH FREQUENCY TORSIONAL OSCILLATION 审中-公开
公开(公告)号：US20200018377A1
公开(公告)日：2020-01-16
申请号：US16568789
申请日：2019-09-12
申请人： Andreas Hohl , Sasa Mihajlovic
发明人： Andreas Hohl , Sasa Mihajlovic
IPC分类号： F16F15/12 , G01H1/10 , E21B47/16 , E21B17/042
摘要： Methods and systems for damping torsional oscillations of downhole systems are described. The systems include a downhole string, a bit support assembly configured to support and receive a disintegration device, wherein the disintegration device is disposed on an end of the downhole string and mounted to the bit support assembly, and a damping system configured at least one of on and in the bit support assembly, the damping system comprising at least one damper element arranged in contact with a portion of the bit support assembly.

43. 发明申请

US20190284881A1 DAMPERS FOR MITIGATION OF DOWNHOLE TOOL VIBRATIONS 审中-公开
公开(公告)号：US20190284881A1
公开(公告)日：2019-09-19
申请号：US16353090
申请日：2019-03-14
申请人： Andreas Hohl , Sasa Mihajlovic
发明人： Andreas Hohl , Sasa Mihajlovic
IPC分类号： E21B17/07
摘要： Systems and methods for damping torsional oscillations of downhole systems are described. The systems include a damping system configured on the downhole system. The damping system includes a first element and a second element in frictional contact with the first element. The second element moves relative to the first element with a velocity that is a sum of a periodic velocity fluctuation having an amplitude and a mean velocity, wherein the mean velocity is lower than the amplitude of the periodic velocity fluctuation.

44. 发明申请

US20160348493A1 DOWNHOLE TEST SIGNALS FOR IDENTIFICATION OF OPERATIONAL DRILLING PARAMETERS 审中-公开
标题翻译：用于识别操作钻孔参数的井下测试信号
公开(公告)号：US20160348493A1
公开(公告)日：2016-12-01
申请号：US14725621
申请日：2015-05-29
申请人： Andreas Hohl
发明人： Andreas Hohl
IPC分类号： E21B44/04 , G05B17/02 , G06F17/50 , G06F17/10 , E21B21/08 , E21B47/00
摘要： A method for selecting drilling parameters for drilling a borehole penetrating the earth with a drill string includes: varying a frequency of an excitation force applied to the drill string using an excitation device controlled by a drill string controller and measuring vibration-related amplitudes of the drill string due to the applied excitation force using a vibration sensor to provide amplitude measurements. The method further includes determining one or more modal properties comprising one or more eigenfrequencies of the drill string using the amplitude measurements and selecting drilling parameters that apply an excitation force at a frequency that avoids a selected range of frequencies that bound the one or more eigenfrequencies.
摘要翻译：用于选择用钻柱穿透地面的钻孔钻孔参数的方法包括：使用由钻柱控制器控制的激励装置来改变施加到钻柱的激励力的频率，并测量钻头的振动相关幅度由于施加的激励力使用振动传感器提供振幅测量。该方法还包括使用振幅测量来确定包括钻柱的一个或多个本征频率的一个或多个模态特性，并且选择在避免选定的限定一个或多个本征频率的频率范围的频率处施加激励力的钻孔参数。

45. 发明授权

US08569928B2 Method for influencing, damping, or suppressing mechanical vibrations occurring during operation in a turbomachine blade, a turbomachine blade useful for carrying out the method, and a piezoelectric damping element 有权
标题翻译：用于影响，阻尼或抑制在涡轮机叶片中操作期间发生的机械振动的方法，用于执行该方法的涡轮机叶片，以及压电阻尼元件
公开(公告)号：US08569928B2
公开(公告)日：2013-10-29
申请号：US13298726
申请日：2011-11-17
申请人： Jaroslaw Leszek Szwedowicz , Wolfgang Kappis , Lars Panning , Sebastian Marc Schwarzendahl , Marcus Neubauer , Andreas Hohl , Jörg Wallaschek
发明人： Jaroslaw Leszek Szwedowicz , Wolfgang Kappis , Lars Panning , Sebastian Marc Schwarzendahl , Marcus Neubauer , Andreas Hohl , Jörg Wallaschek
IPC分类号： H01L41/08
CPC分类号： F01D5/16 , F01D25/06 , F04D29/324 , F04D29/668 , F05D2260/96 , F16F15/005 , Y02E10/72 , Y02T50/671 , Y02T50/673
摘要： In a method for influencing, in particular damping or suppressing, mechanical vibrations occurring during operation in a turbomachine blade (10), the mechanical vibratory energy of the turbomachine blade (10) is first converted into electrical energy and the electrical energy generated is then converted into heat loss. Effective damping which can be used especially simply and in a versatile way is achieved in that the piezoelectric effect is used in order to convert mechanical vibratory energy into electrical energy.
摘要翻译：在用于影响在涡轮机叶片（10）中操作期间发生的机械振动的方法中，特别是阻尼或抑制机械振动的方法中，首先将涡轮机叶片（10）的机械振动能转换为电能，然后转换所产生的电能进入热损失。实现了可以特别简单且通用的有效阻尼，其中使用压电效应以将机械振动能转换为电能。

46. 发明申请

US20100065996A1 TWO-LAYER OR MULTIPLE-LAYER COMPRESSION SPRING 审中-公开
标题翻译：两层或多层压缩弹簧
公开(公告)号：US20100065996A1
公开(公告)日：2010-03-18
申请号：US12449194
申请日：2007-01-29
申请人： Andreas Hohl , Hans Notenboom
发明人： Andreas Hohl , Hans Notenboom
IPC分类号： F16F3/06
CPC分类号： F16F1/06 , F16F3/04
摘要： A multiple-layer compression spring having spring bodies that are disposed inside of each other wherein the spring bodies are produced in a continuous manner from an uninterrupted piece of wire.
摘要翻译：具有设置在彼此内侧的弹簧体的多层压缩弹簧，其中弹簧体以连续的方式从不间断的线制成。

47. 发明授权

US10982526B2 Estimation of maximum load amplitudes in drilling systems independent of sensor position 有权
公开(公告)号：US10982526B2
公开(公告)日：2021-04-20
申请号：US16408688
申请日：2019-05-10
申请人： Andreas Hohl
发明人： Andreas Hohl
IPC分类号： E21B44/02 , G01L5/10 , E21B21/08 , E21B47/00
摘要： Systems and methods for mitigating vibration in downhole strings are described. The methods include obtaining first and second load measurements of first and second loads during a drilling operation and creating first and second load measurement data, with first and second load sensors separated by a sensor distance. First and/or second representative values of the first and second loads are determined form the first and second load measurement data and the sensor distance. The determined representative value(s) are compared against respective load limit(s) and a vibration mitigation operation is performed in response to the determined representative value(s) equaling or exceeding the respective load limit.

48. 发明授权

US10746013B2 Downhole test signals for identification of operational drilling parameters 有权
公开(公告)号：US10746013B2
公开(公告)日：2020-08-18
申请号：US14725621
申请日：2015-05-29
申请人： Andreas Hohl
发明人： Andreas Hohl
IPC分类号： G06G7/48 , E21B44/04 , E21B21/08 , E21B47/00 , E21B4/02 , F04C2/107 , F04C13/00 , F04C14/08 , G06G7/50
摘要： A method for selecting drilling parameters for drilling a borehole penetrating the earth with a drill string includes: varying a frequency of an excitation force applied to the drill string using an excitation device controlled by a drill string controller and measuring vibration-related amplitudes of the drill string due to the applied excitation force using a vibration sensor to provide amplitude measurements. The method further includes determining one or more modal properties comprising one or more eigenfrequencies of the drill string using the amplitude measurements and selecting drilling parameters that apply an excitation force at a frequency that avoids a selected range of frequencies that bound the one or more eigenfrequencies.

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