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1.发明授权
公开(公告)号：US4857852A
公开(公告)日：1989-08-15
申请号：US186986
申请日：1988-04-27
申请人： Robert L. Kleinberg , Brian Clark , Weng C. Chew , David Mariani
发明人： Robert L. Kleinberg , Brian Clark , Weng C. Chew , David Mariani
IPC分类号： G01V3/28
CPC分类号： G01V3/28
摘要： A well logging apparatus is disclosed which employs slot antennas having a plurality of conductive probes traversing the slot. Also disclosed are a logging apparatus having electrically isolated antenna probes and a logging apparatus with an improved means for generating and applying a reference signal used in phase detection.
摘要翻译： 公开了一种测井装置，其使用具有穿过狭槽的多个导电探针的缝隙天线。 还公开了具有电隔离天线探针和测井装置的测井装置，其具有用于产生和施加用于相位检测的参考信号的改进装置。
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2.发明授权
公开(公告)号：US4739272A
公开(公告)日：1988-04-19
申请号：US616326
申请日：1984-05-31
CPC分类号： G01V3/28
摘要： A wall-engaging apparatus for microinductively investigating a characteristic of an earth formation traversed by a borehole comprises an antenna set mounted in an longitudinally elongated body adapted for a sliding engagement with the wall of the borehole. The antenna set includes a transmitter antenna mounted in the body for coupling electromagnetic energy into a formation; a receiver antenna for sensing a signal indicative of the characteristic; and at least one electroquasistatic shield element mounted coaxially with the magnetic dipole axis of the transmitter antenna. The electroquasistatic shield element comprises a sheet of conductive, non-magnetic material having a conductive center; a first annular band of narrow ray-like conductive segments, each of the conductive segments thereof integrally extending radially from the conductive center and being spaced from adjacent conductive segments by respective narrow radially-extending spaces originating in and traversing the first annular band; and preferably but not necessarily a second annular band of ray-like conductive segments, the conductive segments thereof integrally extending radially in pairs from a respective one of the conductive segment of the first annual band, and being spaced from adjacent pairs of conductive strips of the second annual band by respective longitudinal spaces originating in the first annular band and from one another by a narrow radially-extending space originating in and traversing the second annular band.
摘要翻译： 用于微观地研究由钻孔穿过的地层的特征的壁接合装置包括安装在适于与钻孔的壁滑动接合的纵向细长的主体中的天线组。 天线组包括安装在主体中的发射器天线，用于将电磁能耦合到地层中; 用于感测指示特征的信号的接收机天线; 以及与发射器天线的磁偶极轴同轴安装的至少一个电积屏蔽元件。 电气静电屏蔽元件包括具有导电中心的导电非磁性材料片; 窄的射线状导电段的第一环形带，每个导电段从导电中心径向整体延伸，并由相应的狭窄的径向延伸的空间与相邻的导电段间隔开，并且穿过第一环形带; 并且优选地但不一定是第二环形带状的射线状导电段，其导电段从第一年龄段的导电区段中相应的一个成对地成对延伸并且与第一年龄段的相邻的导电条带成对延伸 第二年度带由相应的纵向空间起始于第一环形带，并且彼此由狭窄的径向延伸的空间起源于并穿过第二环形带。
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公开(公告)号：US4780678A
公开(公告)日：1988-10-25
申请号：US616327
申请日：1984-05-31
申请人： Robert L. Kleinberg , Weng C. Chew , Brian Clark
发明人： Robert L. Kleinberg , Weng C. Chew , Brian Clark
CPC分类号： G01V3/28
摘要： A wall-engaging apparatus for microinductively investigating a characteristic of an earth formation traversed by a borehole includes an antenna set mounted in a sensing body adapted for sliding engagement with the wall of the borehole. The antenna set includes first, second and third antenna elements. The second and third elements, being structurally identical but differentially coupled, are positioned in electromagnetic symmetry about the first antenna element. Either the first antenna element or the differentially coupled second and third antenna elements may be energized by suitable circuits, while the other is coupled to circuits for receiving signals indicative of a set characteristic. In another wall-engaging apparatus for microinductively investigating a characteristic of earth formations traversed by a borehole, a transmitter antenna is mounted in a conductive wall-engaging body, within a volume bounded in part by an integral conductive backplane and conductive side wall and opening to the wall-engaging face of the body, for coupling focused electromagnetic energy into a formation. The volume preferably is conformal with the transmitter antenna. Circuits are provided for energizing the transmitter antenna and for detecting a magnetic field from the engaged formation arising from the coupled electromagnetic energy.
摘要翻译： 用于微观地研究由钻孔穿过的地层的特征的壁接合装置包括安装在适于与钻孔的壁滑动接合的感测体中的天线组。 天线组包括第一，第二和第三天线元件。 结构相同但差异耦合的第二和第三元件围绕第一天线元件定位在电磁对称中。 第一天线元件或差分耦合的第二和第三天线元件可以由合适的电路激励，而另一个耦合到用于接收指示集合特性的信号的电路。 在用于微观地研究由钻孔穿过的地层的特征的另一壁接合装置中，发射器天线安装在导电壁接合体内，该导体壁接合体在由一体的导电背板和导电侧壁限定的体积内， 身体的壁接合面，用于将聚焦的电磁能耦合到地层中。 体积优选地与发射器天线保形。 提供电路用于对发射机天线进行激励，并且用于检测由耦合的电磁能产生的被啮合的形式的磁场。
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公开(公告)号：US4845433A
公开(公告)日：1989-07-04
申请号：US616325
申请日：1984-05-31
IPC分类号： G01V3/28
CPC分类号： G01V3/28
摘要： A wall-engaging apparatus for microinductively investigating a characteristic of earth formations traversed by a borehole includes an antenna set mounted in a longitudinally elongated body adapted for a sliding engagement with the wall of the borehole. The antenna set includes a conductive backplane member mounted in the body parallel to the wall-engaging face of the body and first, second, and third half-loop antenna elements. The half-loop antenna elements are coaxial located symmetrically about the half-loop of the first antenna element, with their respective ends located at the backplane member to couple image currents in the backplane. The locations of the second and third antenna elements are further selected to place the second and third antenna elements in electromagnetic symmetry relative to the first antenna element. A differential coupler is included for coupling the second and third antenna elements.
摘要翻译： 用于微观地研究由钻孔穿过的地层的特征的壁接合装置包括安装在纵向细长的主体中的天线组，其适于与钻孔的壁滑动接合。 天线组包括安装在主体中平行于主体的壁接合面的导电底板部件和第一，第二和第三半环天线元件。 半环形天线元件围绕第一天线元件的半环对称地同轴定位，并且它们各自的端部位于背板构件以耦合背板中的图像电流。 进一步选择第二和第三天线元件的位置以使第二和第三天线元件相对于第一天线元件电磁对称。 包括差分耦合器用于耦合第二和第三天线元件。
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5.发明授权Well logging apparatus for determining dip, azimuth, and invaded zone conductivity 失效用于确定倾角，方位角和入侵区导电率的测井装置
公开(公告)号：US4766384A
公开(公告)日：1988-08-23
申请号：US876514
申请日：1986-06-20
申请人： Robert L. Kleinberg , Brian Clark , Weng C. Chew , David Mariani
发明人： Robert L. Kleinberg , Brian Clark , Weng C. Chew , David Mariani
CPC分类号： G01V3/28
摘要： A well logging apparatus is disclosed which employs slot antennas having a plurality of conductive probes traversing the slot. Also disclosed are a logging apparatus having electrically isolated antenna probes and a logging apparatus with an improved circuit for generating and applying a reference signal used in phase detection.
摘要翻译： 公开了一种测井装置，其使用具有穿过狭槽的多个导电探针的缝隙天线。 还公开了具有电隔离的天线探针和测井装置的测井装置，其具有用于产生和施加用于相位检测的参考信号的改进的电路。
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公开(公告)号：US5055787A
公开(公告)日：1991-10-08
申请号：US431368
申请日：1989-12-05
申请人： Robert L. Kleinberg , Douglas D. Griffin , Masafumi Fukuhara , Abdurrahman Sezginer , Weng C. Chew
发明人： Robert L. Kleinberg , Douglas D. Griffin , Masafumi Fukuhara , Abdurrahman Sezginer , Weng C. Chew
CPC分类号： G01V3/32 , G01N24/081 , G01R33/341 , G01R33/3808 , G01R33/3671 , G01R33/443 , G01R33/448
摘要： Borehole NMR logging apparatus and methods, and methods for the interpretation thereof. A logging tool is provided which produces a strong, static and homogeneous magnetic field B.sub.0 in a Volume of an adjacent formation on one side of the tool to measure nuclear magnetic resonance characteristics thereof. In the preferred embodiment, the tool has an RF antenna mounted on the outside of the metal body of the tool, directing focussed oscillating magnetic fields B.sub.1 at said Volume to polarize or tip the magnetic moments of hydrogen nuclei of fluids within rock pores. The same antenna can be used to receive signals of proton precession in the Volume of interest immediately after transmission of the RF polarizing field B.sub.1. Extremely rapid damping of the antenna between the transmitting and receiving modes of operation is accomplished by a Q-switch disclosed herein. The invention provides for the direct measurement of NMR decay having transverse relaxation time T.sub.2 behavior, and further provides for the fast repetition of pulsed measurements from within a borehole. An additional magnet array may be mounted offset from the first magnet configuration to prepolarize a formation before it is measured in order to pre-align a larger number of protons than the single magnet configuration could do by itself. Additional features of the invention are disclosed which increase the Signal/Noise ratio of the measured data, and improve the quality and quantity of borehole NMR measurements, per unit of time spent. Disclosed interpretation methods determine fluid flow permeability and longitudinal relaxation time T.sub.1 -type parameters by directly comparing the measured decay signals (such as T.sub.2 or T.sub.2 * type decay) to a representation which responds to both the decay time t.sub.dec and the imposed polarization period prior to such decay t.sub.poi. The parameters of amplitude and T.sub.1 are determined and combined with certain preferred methods to generate robust values of formation characteristics such as fluid flow permeability. Other related methods are disclosed.
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7.发明授权
公开(公告)号：US4933638A
公开(公告)日：1990-06-12
申请号：US368916
申请日：1989-06-19
申请人： Robert L. Kleinberg , Douglas D. Griffin , Masafumi Fukuhara , Abdurranhman Sezginer , Weng C. Chew , William E. Kenyon , Peter I. Day , Max Lipsicas
发明人： Robert L. Kleinberg , Douglas D. Griffin , Masafumi Fukuhara , Abdurranhman Sezginer , Weng C. Chew , William E. Kenyon , Peter I. Day , Max Lipsicas
CPC分类号： G01R33/341 , G01N24/081 , G01R33/3671 , G01R33/3808 , G01V3/32
摘要： Borehole NMR logging apparatus and methods, and methods for the interpretation thereof. A logging tool is provided which produces a strong, static and homogeneous magnetic field B.sub.0 in a Volume of an adjacent formation on one side of the tool to measure nuclear magnetic resonance characteristics thereof. In the preferred embodiment, the tool has an RF antenna mounted on the outside of the metal body of the tool, directing focussed oscillating magnetic fields B.sub.1 at said Volume to polarize or tip the magnetic moments of hydrogen nuclei of fluids within rock pores. The same antenna can be used to receive signals of proton precession in the Volume of interest immediately after transmission of the RF polarizing field B.sub.1. Extremely rapid damping of the antenna between the transmitting and receiving modes of operation is accomplished by a Q-switch disclosed herein. The invention provides for the direct measurement of NMR decay having transverse relaxation time T.sub.2 behavior, and further provides for the fast repetition of pulsed measurements from within a borehole. An additional magnet array may be mounted offset from the first magnet configuration to prepolarize a formation before it is measured in order to pre-align a larger number of protons than the single magnet configuration could do by itself. Additional features of the invention are disclosed which increase the Signal/Noise ratio of the measured data, and improve the quality and quantity of borehole NMR measurements, per unit of time spent. Disclosed interpretation methods determine fluid flow permeability and longitudinal relaxation time T.sub.1 -type parameters by directly comparing the measured decay signals (such as T.sub.2 and T.sub.2 * type decay) to a representation which responds to both the decay time t.sub.dec and the imposed polarization period prior to such decay, t.sub.pol. The parameters of amplitude and T.sub.1 are determined and combined with certain preferred methods to generate robust values of formation characteristics such as fluid flow permeability. Other related methods are disclosed.
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公开(公告)号：US4712070A
公开(公告)日：1987-12-08
申请号：US616323
申请日：1984-05-31
申请人： Brian Clark , Weng C. Chew
发明人： Brian Clark , Weng C. Chew
CPC分类号： G01V3/28
摘要： A wall-engaging apparatus for microinductively investigating a characteristic of earth formation traversed by a borehole includes an antenna set mounted in a longitudinally elongated body adapted for a sliding engagement with the wall of the borehole. The antenna set includes a first antenna element, a second antenna element, and a third antenna element, the respective locations and orientations of the second and third antenna elements being selected to place the second and third antenna elements in electromagnetic symmetry relative to the first antenna element. Differentially coupling the second and third antenna elements. Either the first antenna element or the differentially-coupled second and third antenna elements may be energized by suitable means, while the other is coupled for receiving signals indicative of the characteristic.
摘要翻译： 用于微观地研究由钻孔穿过的地层的特性的壁接合装置包括安装在纵向细长的主体中的天线组，其适于与钻孔的壁滑动接合。 天线组包括第一天线元件，第二天线元件和第三天线元件，第二和第三天线元件的相应位置和取向被选择为将第二和第三天线元件相对于第一天线放置在电磁对称中 元件。 差分耦合第二和第三天线元件。 第一天线元件或差分耦合的第二和第三天线元件可以由合适的装置激励，而另一个被耦合用于接收指示特性的信号。
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公开(公告)号：US07707527B2
公开(公告)日：2010-04-27
申请号：US11862434
申请日：2007-09-27
申请人： Lijun Jiang , Jason D. Morsey , Barry J. Rubin , Weng C. Chew , Mao-Kin Li , Yuan Liu
发明人： Lijun Jiang , Jason D. Morsey , Barry J. Rubin , Weng C. Chew , Mao-Kin Li , Yuan Liu
IPC分类号： G06F17/50
CPC分类号： G06F17/5036
摘要： A method for performing a signal integrity analysis on an integrated circuit (IC) that includes a plurality of scatterers by dividing the scatterers into subgroups using a nested Huygens' equivalence principle algorithm and solving a set of equations realized thereby with a reduced coupling matrix. The method includes decomposing the IC design into a plurality of small non-overlapping circuit sub-domains, wherein each of the sub-domains is formed as a small, enclosed region. Each sub-domain is analyzed independently of the other sub-domains using only electric fields to represent the interactions of each sub-domains with the other sub-domains as equivalent currents on equivalent surfaces of the plurality of sub-domains. Neighboring equivalent sub-domains are grouped together to form larger sub-domains using equivalent currents on equivalent surfaces to represent the interactions of the sub-domains. The steps of analyzing and grouping the sub-domains are repeated until the grouping approaches a box comprising the entire domain, and that the domain interactions between every sub-domain have been analyzed.
摘要翻译： 一种用于通过使用嵌套的惠更斯等效原理算法将散射体分成子组并且用减小的耦合矩阵求解由此实现的一组方程式来对包括多个散射体的集成电路（IC）进行信号完整性分析的方法。 该方法包括将IC设计分解为多个小的非重叠电路子域，其中每个子域形成为小的封闭区域。 仅使用电场来分析每个子域独立于其他子域，以将每个子域与其他子域的相互作用表示为多个子域的等效表面上的等效电流。 相邻的等效子域被分组在一起以形成较大的子域，使用等效表面上的等效电流来表示子域的相互作用。 重复分析和分组子域的步骤，直到分组接近包含整个域的框，并且分析了每个子域之间的域交互。
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公开(公告)号：US20100161293A1
公开(公告)日：2010-06-24
申请号：US12718309
申请日：2010-03-05
申请人： Lijun Jiang , Jason D. Morsey , Barry J. Rubin , Weng C. Chew , Mao-kun Li , Yuan Liu
发明人： Lijun Jiang , Jason D. Morsey , Barry J. Rubin , Weng C. Chew , Mao-kun Li , Yuan Liu
IPC分类号： G06F17/11
CPC分类号： G06F17/5036
摘要： A method for performing a signal integrity analysis on an integrated circuit (IC) that includes a plurality of scatterers by dividing the scatterers into subgroups using a nested Huygens' equivalence principle algorithm and solving a set of equations realized thereby with a reduced coupling matrix. The method includes decomposing the IC design into a plurality of small non-overlapping circuit sub-domains, wherein each of the sub-domains is formed as a small, enclosed region. Each sub-domain is analyzed independently of the other sub-domains using only electric fields to represent the interactions of each sub-domains with the other sub-domains as equivalent currents on equivalent surfaces of the plurality of sub-domains. Neighboring equivalent sub-domains are grouped together to form larger sub-domains using equivalent currents on equivalent surfaces to represent the interactions of the sub-domains. The steps of analyzing and grouping the sub-domains are repeated until the grouping approaches a box comprising the entire domain, and that the domain interactions between every sub-domain have been analyzed.
摘要翻译： 一种用于通过使用嵌套的惠更斯等效原理算法将散射体分成子组并且用减小的耦合矩阵求解由此实现的一组方程式来对包括多个散射体的集成电路（IC）进行信号完整性分析的方法。 该方法包括将IC设计分解为多个小的非重叠电路子域，其中每个子域形成为小的封闭区域。 仅使用电场来分析每个子域独立于其他子域，以将每个子域与其他子域的相互作用表示为多个子域的等效表面上的等效电流。 相邻的等效子域被分组在一起以形成较大的子域，使用等效表面上的等效电流来表示子域的相互作用。 重复分析和分组子域的步骤，直到分组接近包含整个域的框，并且分析了每个子域之间的域交互。
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