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91. 发明授权

US07286937B2 Estimating formation properties from downhole data 有权
标题翻译：从井下数据估算地层特性
公开(公告)号：US07286937B2
公开(公告)日：2007-10-23
申请号：US11124528
申请日：2005-05-06
申请人： Jaideva C. Goswami , Ali Ozbek , Amit Mukherjee , Reza Taherian
发明人： Jaideva C. Goswami , Ali Ozbek , Amit Mukherjee , Reza Taherian
IPC分类号： G01V3/38
CPC分类号： G01V11/00 , G01V3/18
摘要： Methods and systems for extracting formation properties from formation logging data is disclosed. A method includes obtaining a deconvolution filter; and processing the formation logging data using the deconvolution filter to produce estimates of the formation properties. The estimates of the formation properties may be further processed with a diffusion filter, which may be an anisotropic diffusion filter. A system for extracting formation properties from formation logging data includes a central processing unit and a memory, wherein the memory stores a program having instructions for performing a method that includes designing a deconvolution filter; and processing the formation logging data using the deconvolution filter to produce estimates of the formation properties.
摘要翻译：公开了从地层测井数据中提取地层特征的方法和系统。一种方法包括获得去卷积滤波器; 以及使用去卷积滤波器处理地层测井数据以产生地层特性的估计。可以用扩散过滤器进一步处理形成性质的估计，扩散过滤器可以是各向异性扩散过滤器。一种用于从地层测井数据中提取地层特性的系统包括中央处理单元和存储器，其中存储器存储具有执行包括设计去卷积滤波器的方法的指令的程序; 以及使用去卷积滤波器处理地层测井数据以产生地层特性的估计。

92. 发明申请

US20060145700A1 Apparatus for electromagnetic logging of a formation 有权
标题翻译：用于电磁测井的装置
公开(公告)号：US20060145700A1
公开(公告)日：2006-07-06
申请号：US11030670
申请日：2004-12-31
申请人： Jacques Tabanou , Reza Taherian
发明人： Jacques Tabanou , Reza Taherian
IPC分类号： G01V3/00
CPC分类号： G01V3/30
摘要： A tool for electromagnetic logging of a formation includes a tool body configured to move in a borehole penetrating the formation; an antenna array disposed on the tool body; and an electronic unit configured to control operation of the antenna array, wherein the antenna array comprises at least one transmitter and at least one receiver, wherein at least one selected from the group consisting of the at least one transmitter and the at least one receiver comprises a printed circuit antenna.
摘要翻译：用于地层的电磁测井的工具包括构造成在穿过地层的钻孔中移动的工具主体; 设置在所述工具主体上的天线阵列; 以及电子单元，被配置为控制所述天线阵列的操作，其中所述天线阵列包括至少一个发射机和至少一个接收机，其中从由所述至少一个发射机和所述至少一个接收机组成的组中选择的组中的至少一个包括印刷电路天线。

93. 发明授权

US06586932B1 Enhanced performance antennas for NMR logging 有权
标题翻译：用于NMR测井的增强性能天线
公开(公告)号：US06586932B1
公开(公告)日：2003-07-01
申请号：US10065414
申请日：2002-10-16
申请人： Reza Taherian , Richard P. Harris
发明人： Reza Taherian , Richard P. Harris
IPC分类号： G01V300
CPC分类号： G01R33/341 , G01R33/34046 , G01V3/32
摘要： An antenna design for a downhole nuclear magnetic resonance logging tool is enhanced to shape the resultant RF field generated by the antenna. The enhancement is accomplished by adding additional turns to a portion of the antenna, either circumscribing a ferrite material or located on the surface of an at least partially non-conductive material. The additional turns or half turns in combination with the RF field from parallel antenna portions result in a RF field contribution that is proportionally higher than the RF field contribution from the coil portions which are not enhanced. Further, the total RF field can be shaped over a earth sample region depending on placement of the enhancing turns. In this way, for example, the total RF field can be generated to achieve an orthogonal alignment with a static magnetic field over a larger region of the sample.
摘要翻译：增强井下核磁共振测井仪的天线设计，以形成由天线产生的合成RF场。增强是通过向天线的一部分添加额外的匝数来实现的，该天线的一部分包围铁氧体材料或者位于至少部分非导电材料的表面上。与平行天线部分的RF场结合的额外匝数或半匝导致RF场贡献成比例地高于来自未增强的线圈部分的RF场贡献。此外，根据增强匝的放置，总的射频场可以在地球样品区域上成形。以这种方式，例如，可以产生总RF场以在样本的较大区域上实现与静态磁场的正交对准。

94. 发明授权

US06498484B1 Method for reducing ringing in nuclear magnetic resonance well logging instruments 有权
标题翻译：降低核磁共振测井仪器振铃的方法
公开(公告)号：US06498484B1
公开(公告)日：2002-12-24
申请号：US09594640
申请日：2000-06-15
申请人： Boqin Sun , Reza Taherian
发明人： Boqin Sun , Reza Taherian
IPC分类号： G01V300
CPC分类号： G01V3/32 , G01N24/081
摘要： A method for reducing ringing in nuclear magnetic resonance measurements is disclosed. The method includes inducing a static magnetic field in a sensitive volume to orient nuclear magnetic spins of nuclei in the sensitive volume. The nuclear spins are reoriented by a first selected angle. An amplitude of the static magnetic field is then adjusted to cause a first selected phase shift in a spin echo signal measured subsequently to the reorienting by the first angle. The spins are then reoriented by a second selected angle, and a first spin echo signal is detected. After a selected wait time, reorienting by the first selected angle is repeated. Adjusting the amplitude of the static magnetic field is then repeated to cause a second selected phase shift in a subsequently measured spin echo. The first and second selected phase shifts have a difference between them of an odd numbered multiple of 180 degrees. Reorienting by the second selected and detecting a second spin echo signal are then repeated. Finally, a difference between the first spin echo signal and the second spin echo signal is determined. In one embodiment, the measuring of the first and second spin echoes is repeated a selected number of times, and the difference is calculated between time corresponding ones of the first and second spin echoes.
摘要翻译：公开了一种减少核磁共振测量中振铃的方法。该方法包括在敏感体积中诱导静磁场以定向敏感体积中的核的核磁自旋。核旋转由第一选定角度重新定向。然后调整静态磁场的振幅，以使得随着重新定向第一角度测量的自旋回波信号中的第一选择的相移。然后将自旋重新定向第二选定角度，并且检测第一自旋回波信号。在选定的等待时间之后，重新定向第一选定角度的方向。然后重复调整静态磁场的振幅，以在随后测量的自旋回波中引起第二选择的相移。第一和第二选择的相移在180度的奇数倍数之间具有差异。然后重复第二选择的重定向并检测第二自旋回波信号。最后，确定第一自旋回波信号和第二自旋回波信号之间的差异。在一个实施例中，重复第一和第二自旋回波的测量次数，并且在第一和第二自旋回波的时间对应的时间之间计算差值。

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