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11. 发明申请

US20130199286A1 Non-Invasive Compressibility and In Situ Density Testing of a Fluid Sample in a Sealed Chamber 有权
标题翻译：在密封室中的流体样品的非侵入性压缩性和原位密度测试
公开(公告)号：US20130199286A1
公开(公告)日：2013-08-08
申请号：US13389583
申请日：2010-06-17
申请人： Li Gao , Mark A. Proett , Sami Eyuboglu , Tony Herman van Zuilekom
发明人： Li Gao , Mark A. Proett , Sami Eyuboglu , Tony Herman van Zuilekom
IPC分类号： E21B49/08 , G01N9/04
CPC分类号： E21B49/08 , E21B49/081 , E21B2049/085 , G01N9/00 , G01N9/04 , G01N33/2823
摘要： In situ density and compressibility of a fluid sample are determined for a fluid sample collected downhole. The density and compressibility of the fluid sample is determined by measuring a distance to a piston contained within the sample chamber using an external magnetic field sensor that senses a magnetic field emanating from a magnetic provided on the piston internal to the sample chamber. The testing is performed quickly and at the surface in a noninvasive fashion (i.e., without opening the sample chamber).
摘要翻译：对于在井下收集的流体样品，确定流体样品的原位密度和压缩性。通过使用外部磁场传感器来测量包含在样品室内的活塞的距离来确定流体样品的密度和压缩性，外部磁场传感器感测从设置在样品室内部的活塞上的磁场发出的磁场。快速地进行测试，并以无创的方式（即，不打开样品室）在表面进行测试。

12. 发明授权

US08030935B2 Minimizing the effect of borehole current in tensor induction logging tools 有权
标题翻译：最小化井下电流对张力感应测井工具的影响
公开(公告)号：US08030935B2
公开(公告)日：2011-10-04
申请号：US10965997
申请日：2004-10-15
申请人： Jiaqi Xiao , Li Gao
发明人： Jiaqi Xiao , Li Gao
IPC分类号： G01V3/10
CPC分类号： G01V3/28
摘要： Logging tools, methods, and computer programs for use in borehole logging are described. The logging tool includes three or more tensors, each tensor including one or more coils. Each coil is characterized by coil parameters including an axis orientation, a cross-sectional area, a number of turns, and a location. At least one of the coil axes is disposed at an angle to the borehole axis. One or more of the coil parameters are selected to minimize sensitivity to borehole current.
摘要翻译：描述了用于钻孔测井的测井工具，方法和计算机程序。测井工具包括三个或更多的张量，每个张量包括一个或多个线圈。每个线圈的特征在于包括轴定向，横截面积，匝数和位置的线圈参数。线圈轴中的至少一个以与井眼轴线成一角度的方式设置。选择一个或多个线圈参数以最小化对井眼电流的敏感性。

13. 发明授权

US07995981B2 Receiver with image rejection calibration at an undesired picture carrier and method therefor 有权
标题翻译：在不期望的图像载体上具有镜像抑制校准的接收机及其方法
公开(公告)号：US07995981B2
公开(公告)日：2011-08-09
申请号：US11263279
申请日：2005-10-31
申请人： Li Gao , Richard A Johnson , James M. Nohrden
发明人： Li Gao , Richard A Johnson , James M. Nohrden
IPC分类号： H04B1/10
CPC分类号： H04B1/123
摘要： In one embodiment, a method is provided. An in-band calibration tone is generated at a frequency of an undesired interfering signal. A receiver is calibrated using the calibration tone to reject image interference caused by the undesired interfering signal.
摘要翻译：在一个实施例中，提供了一种方法。在不期望的干扰信号的频率处产生带内校准音。使用校准音来校准接收机，以抑制由不需要的干扰信号引起的图像干扰。

14. 发明申请

US20110031972A1 METHOD AND SYSTEM OF DETERMINING AN ELECTRICAL PROPERTY OF A FORMATION FLUID 有权
标题翻译：确定形成流体的电气性能的方法和系统
公开(公告)号：US20110031972A1
公开(公告)日：2011-02-10
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。

15. 发明申请

US20070055062A1 Pyrrolo-thiazines and processes for the preparation and use thereof 失效
标题翻译：吡咯并噻嗪类及其制备方法及用途
公开(公告)号：US20070055062A1
公开(公告)日：2007-03-08
申请号：US11516317
申请日：2006-09-06
申请人： Rawle Hollingsworth , Li Gao
发明人： Rawle Hollingsworth , Li Gao
IPC分类号： C07D513/04
CPC分类号： C07D513/04
摘要： 1H-Pyrrolo-1,4-thiazines and a process for the preparation thereof are described. These compounds are useful as enzyme inhibitors in cells, particularly for medical uses.
摘要翻译：描述了1H-吡咯并-1,4-噻嗪及其制备方法。这些化合物可用作细胞中的酶抑制剂，特别是用于医疗用途。

16. 发明申请

US20060122778A1 Downhole signal source 有权
标题翻译：井下信号源
公开(公告)号：US20060122778A1
公开(公告)日：2006-06-08
申请号：US11326691
申请日：2006-01-06
申请人： Li Gao , Paul Rodney
发明人： Li Gao , Paul Rodney
IPC分类号： G01V5/04
CPC分类号： G01V11/002
摘要： A signaling apparatus comprises a magnet and a shield moveable relative to the magnet. The shield is moveable relative to the magnet between a first position in which the magnet is relatively exposed and a second position in which the magnet is relatively shielded. The apparatus can include a synchronization signal source, a downhole sensor signal source, and/or means for modulating the magnetic field in response to the signal from any source. A method of using the signaling apparatus to locate a bottomhole assembly includes moving the shield so as to modulate the magnetic field created by the magnet, sensing the modulation of the magnetic field, and determining the location of the bottomhole assembly using the information collected. The BHA can be located using phase shift or amplitude measurements. Receivers detecting the modulated magnetic field can be at or below the earth's surface.
摘要翻译：信号装置包括磁体和可相对于磁体移动的屏蔽件。所述屏蔽件可相对于所述磁体在所述磁体相对暴露的第一位置和所述磁体相对被屏蔽的第二位置之间移动。该装置可以包括同步信号源，井下传感器信号源和/或响应于来自任何源的信号来调制磁场的装置。使用信号装置来定位井底组件的方法包括移动屏蔽件以便调制由磁体产生的磁场，感测磁场的调制，以及使用收集的信息来确定井底组件的位置。可以使用相移或幅度测量来定位BHA。检测调制磁场的接收机可以在地球表面以下。

17. 发明申请

US20060073800A1 Selectable high-side/low-side mix for high intermediate frequency (IF) receivers 有权
标题翻译：用于高中频（IF）接收机的可选高边/低边混合
公开(公告)号：US20060073800A1
公开(公告)日：2006-04-06
申请号：US11239991
申请日：2005-09-30
申请人： Richard Johnson , James Nohrden , Li Gao
发明人： Richard Johnson , James Nohrden , Li Gao
IPC分类号： H04B1/18
CPC分类号： H03D7/166
摘要： A method in which one of a high-side mix mode and a low-side mix mode is selected in response to an interference characteristic of a desired channel of a radio frequency (RF) input signal is disclosed. In the high-side mix mode, a direct digital frequency synthesizer (130) is initialized to output a digital local oscillator signal at a first frequency suitable for performing a high-side mix of the desired channel to an intermediate frequency (IF). In the low-side mix mode, the direct digital frequency synthesizer (130) is initialized to output the digital local oscillator signal at a second frequency suitable for performing a low-side mix of the desired channel to said IF. The RF input signal is mixed with the digital local oscillator signal to provide an IF output signal at the IF.
摘要翻译：公开了响应于射频（RF）输入信号的期望信道的干扰特性来选择高侧混合模式和低侧混合模式之一的方法。在高侧混合模式中，直接数字频率合成器（130）被初始化，以便将第一频率的数字本地振荡器信号输出到适于执行期望信道的高侧混频到中频（IF）。在低侧混合模式中，直接数字频率合成器（130）被初始化，以便以适于执行期望信道的低端混合的所述IF的第二频率输出数字本地振荡器信号。 RF输入信号与数字本地振荡器信号混合，以在IF提供IF输出信号。

18. 发明授权

US06556016B2 Induction method for determining dip angle in subterranean earth formations 有权
标题翻译：用于确定地下地层倾角的感应方法
公开(公告)号：US06556016B2
公开(公告)日：2003-04-29
申请号：US09927818
申请日：2001-08-10
申请人： Li Gao , Luis SanMartin , Stanley C. Gianzero
发明人： Li Gao , Luis SanMartin , Stanley C. Gianzero
IPC分类号： G01V328
CPC分类号： G01V3/28
摘要： A method is disclosed for the determination of the dip angle of anisotropic earth formations surrounding a wellbore. Electromagnetic couplings among a plural of triad transmitters and triad receivers are measured. Each triad transmitter/receiver consists of coil windings in three mutually orthogonal axes. The transmitter coils and receiver coils are oriented such that mutually symmetrical transmitter pairs or mutually symmetrical receiver pairs are equidistant from a centrally located receiver or transmitter, respectively. The measured signals from the created couplings are used to generate initial separate estimates of the dip angle of the formation. The two discrete determination is of dip angle are then averaged to arrive at a more accurate estimate that approaches the true dip angle in the formation.
摘要翻译：公开了用于确定围绕井眼的各向异性地层的倾角的方法。测量多个三端发射器和三电平接收器之间的电磁耦合。每个三元组发送器/接收器由三个相互正交的轴线圈绕组组成。发射器线圈和接收器线圈被定向成使得相互对称的发射器对或相互对称的接收器对分别与位于中心的接收器或发射器等距。来自所产生的联轴器的测量信号用于产生地层倾角的初始分离估计。然后将两个离散的倾角测量值进行平均，得到接近地层中真正倾角的更准确的估计。

19. 发明授权

US10280745B2 Method and apparatus for evaluating fluid sample contamination by using multi sensors 有权
公开(公告)号：US10280745B2
公开(公告)日：2019-05-07
申请号：US13981634
申请日：2012-01-24
申请人： Sami Abbas Eyuboglu , Mark Proett , Rohin Naveena Chandran , Anthony Herman Van Zuilekom , Li Gao
发明人： Sami Abbas Eyuboglu , Mark Proett , Rohin Naveena Chandran , Anthony Herman Van Zuilekom , Li Gao
IPC分类号： E21B49/08
摘要： A method of evaluating fluid sample contamination is disclosed. A formation tester tool is introduced into a wellbore. The formation tester tool comprises a sensor. Sensor data is acquired from the sensor and a contamination estimation is calculated. A remaining pump-out time required to reach a contamination threshold is then determined.

20. 发明授权

US09671211B2 Method and apparatus for measuring linear displacement 有权
公开(公告)号：US09671211B2
公开(公告)日：2017-06-06
申请号：US13809398
申请日：2010-07-23
申请人： Li Gao , Jeffrey L. Moore , Jimmy W. Anders , Michael T. Pelletier
发明人： Li Gao , Jeffrey L. Moore , Jimmy W. Anders , Michael T. Pelletier
IPC分类号： G01V3/26 , G01B7/14 , E21B47/09 , G01B7/00 , G01D5/14 , E21B49/08
CPC分类号： G01B7/14 , E21B47/09 , E21B49/08 , G01B7/003 , G01D5/145
摘要： For some embodiments, a system includes a moveable structure, moveable in at least a linear direction relative to a supporting structure, a magnetic field sensor assembly including a magnetic field sensor, and a magnet, wherein one of the magnet and the magnetic field sensor is coupled to the moveable structure, and wherein the other of the magnet and the magnetic field sensor assembly is coupled to the supporting structure, and wherein the magnetic field sensor assembly is configured to determine the relative position of the magnet to the magnetic field sensor.

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