Method and device for complex permittivity measurements as a function of frequency
    1.
    发明授权
    Method and device for complex permittivity measurements as a function of frequency 失效
    作为频率的函数的复介电常数测量的方法和装置

    公开(公告)号:US07642785B2

    公开(公告)日:2010-01-05

    申请号:US11241185

    申请日:2005-09-30

    IPC分类号: G01V3/00

    CPC分类号: G01R27/2647

    摘要: An apparatus for use in a system that includes a network analyzer for determining a property, such as dielectric permittivity of a sample material as a function of frequency, the apparatus including: a cylindrical chamber for receiving the sample; a coaxial connector having a first relatively small diameter end coupleable with the analyzer and a second relatively large diameter end communicating with a side of the cylindrical chamber, the connector having inner and outer coaxial conductors; the inner conductor of the connector having a diameter that tapers outwardly from the first end to the second end, and the outer conductor of the connector having an inner surface whose diameter tapers outwardly from the first end to the second end. The chamber can accommodate relatively large samples, such as standard earth formation coring samples.

    摘要翻译: 一种用于系统的装置,包括用于确定作为频率的函数的样品材料的介电常数的性质的网络分析仪,所述装置包括:用于接收样品的圆柱形室; 同轴连接器,其具有与分析器相连的第一相对较小直径的端部,以及与圆柱形腔室的一侧连通的第二较大直径端,该连接器具有内部和外部同轴导体; 连接器的内部导体具有从第一端向第二端向外逐渐变细的直径,并且连接器的外部导体具有一个内表面,该内表面的直径从第一端向第二端向外逐渐变细。 该室可以容纳相对大的样品,例如标准的地层取芯样品。

    Estimations of nuclear magnetic resonance measurement distributions
    3.
    发明授权
    Estimations of nuclear magnetic resonance measurement distributions 有权
    核磁共振测量分布的估计

    公开(公告)号:US09222902B2

    公开(公告)日:2015-12-29

    申请号:US13346468

    申请日:2012-01-09

    CPC分类号: G01N24/081 G01R33/448

    摘要: A nuclear magnetic resonance (NMR) related distribution is estimated that is consistent with NMR measurements and uses linear functionals directly estimated from the measurement indications by integral transforms as constraints in a cost function. The cost function includes indications of the measurement data, Laplace transform elements and the constraints, and a distribution estimation is made by minimizing the cost function. The distribution estimation may be used to find parameters of the sample. Where the sample is a rock or a formation, the parameters may include parameters such as rock permeability and/or hydrocarbon viscosity, bound and free fluid volumes, among others. The parameters may be used in models, equations, or otherwise to act on the sample, such as in recovering hydrocarbons from the formation.

    摘要翻译: 估计核磁共振(NMR)相关分布与NMR测量一致,并且使用通过积分变换作为成本函数中的约束从测量指示直接估计的线性函数。 成本函数包括测量数据,拉普拉斯变换元素和约束的指示,并且通过最小化成本函数来进行分布估计。 分布估计可用于查找样本的参数。 在样品是岩石或地层的情况下,参数可以包括诸如岩石渗透性和/或烃粘度,结合和游离流体体积等参数。 这些参数可以用于模型,方程式或其他方式作用于样品,例如从地层回收碳氢化合物。

    Method of evaluating a geological formation using a logging tool
including slot antenna having two nonparallel elements
    6.
    发明授权
    Method of evaluating a geological formation using a logging tool including slot antenna having two nonparallel elements 失效
    使用包括具有两个不平行元件的缝隙天线的测井工具评估地质构造的方法

    公开(公告)号:US5406206A

    公开(公告)日:1995-04-11

    申请号:US98018

    申请日:1993-07-27

    CPC分类号: H01Q21/245 G01V3/30

    摘要: A slot antenna has a square aperture and two current probes at angles to each other in the aperture. The two current probes are excited simultaneously or separately with different signals. By adjusting the amplitude or phase of the signals in the current probes, the angle of the magnetic moment of the antenna can be adjusted. An array of such antennas in an electromagnetic propagation tool for a well-logging device simultaneously provides better standoff performance by adjusting tile magnetic moment to be parallel to a borehole axis, and better image response by adjusting the magnetic moment to be perpendicular to the formation bed. The array can be excited to function as an endfire and broadside array of an electromagnetic propagation tool.

    摘要翻译: 缝隙天线具有方孔和两个在孔中彼此成角度的电流探针。 两个电流探头同时或分开激发不同的信号。 通过调整电流探头中信号的幅度或相位,可以调节天线的磁矩角度。 用于测井装置的电磁传播工具中的这种天线阵列同时通过调节平行于钻孔轴的瓦片磁矩提供更好的隔离性能,并且通过调节垂直于地层床的磁矩来获得更好的图像响应 。 该阵列可以被激发用作电磁传播工具的端射和宽边阵列。

    Spontaneous potential measurement apparatus connected between metallic
housings of a wellbore apparatus for measuring the spontaneous
potential of an earth formation
    7.
    发明授权
    Spontaneous potential measurement apparatus connected between metallic housings of a wellbore apparatus for measuring the spontaneous potential of an earth formation 失效
    连接在用于测量地层的自发电位的井筒装置的金属壳体之间的自发电位测量装置

    公开(公告)号:US5402069A

    公开(公告)日:1995-03-28

    申请号:US80428

    申请日:1993-06-18

    IPC分类号: G01V3/26 G01V3/18 G01V3/20

    CPC分类号: G01V3/265

    摘要: A spontaneous potential (SP) sub is interconnected between two metallic housings of a wellbore apparatus and is lowered into a wellbore. A spontaneous potential (SP) of an earth formation trasversed by the wellbore is measured by the SP sub, and a log is generated from the sub which is representative of the spontaneous potential of the formation, the log being substantially free of a special type of distortion which typified the prior art SP measurements taken by prior art SP measurement apparatus. The SP sub includes a measurement electrode, monitoring electrodes placed on both sides of the measurement electrode, a bucking electrode placed on both sides of the monitoring electrodes, current driving circuitry connected to the bucking electrodes, and receiving circuitry connected to the monitoring electrodes. The current driving circuitry delivers a current of sufficient magnitude to each bucking electrode such that the voltage potential between the monitoring electrodes is approximately equal to zero. The current from each bucking electrode is grounded via its own respective metallic housing and not via a surface oriented electrode. The receiving circuitry monitors the voltage between each of the monitoring electrodes and looks for a zero potential difference between the monitoring electrodes. When the receiving circuitry locates the zero potential difference at a moment in time between its monitoring electrodes, the measurement of the spontaneous potential taken by the measurement electrode at that same precise moment in time is received and recorded. A plurality of such measurements made by the measurement electrode represents a log of spontaneous potential of the earth formation traversed by the wellbore which is substantially free of the distortion which typified the prior art SP log measurements.

    摘要翻译: 自发电位(SP)sub在井筒装置的两个金属壳体之间互连,并被下降到井筒中。 通过SP sub测量由井筒对置的地层的自发电位(SP),并且从代表地层的自发电位的sub产生对数,对数基本上不含特殊类型 失真表示现有技术的SP测量装置所采用的现有技术SP测量。 SP sub包括测量电极,设置在测量电极两侧的监视电极,设置在监视电极两侧的降压电极,连接到降压电极的电流驱动电路和连接到监视电极的接收电路。 电流驱动电路向每个降压电极传送足够大的电流,使得监视电极之间的电压电位近似等于零。 来自每个降压电极的电流通过其各自的金属外壳而不经由表面取向的电极接地。 接收电路监视每个监测电极之间的电压,并寻找监测电极之间的零电位差。 当接收电路在其监测电极之间的时间点定位零电位差时,接收并记录测量电极在同一精确时刻所采取的自发电位的测量。 由测量电极进行的多次这样的测量表示由井筒穿过的地层的自发电位的对数,其基本上没有以现有技术的SP测量值为代表的失真。

    Modified pulse sequence to estimate properties
    9.
    发明授权
    Modified pulse sequence to estimate properties 有权
    修改脉冲序列来估计属性

    公开(公告)号:US08587302B2

    公开(公告)日:2013-11-19

    申请号:US12717512

    申请日:2010-03-04

    IPC分类号: G01V3/00 G01V1/48

    摘要: Methods and related systems are described for estimating fluid or rock properties from NMR measurements. A modified pulse sequence is provided that can directly provide moments of relaxation-time or diffusion distributions. This pulse sequence can be adapted to the desired moment of relaxation-time or diffusion coefficient. The data from this pulse sequence provides direct estimates of fluid properties such as average chain length and viscosity of a hydrocarbon. In comparison to the uniformly-spaced pulse sequence, these pulse sequences are faster and have a lower error bar in computing the fluid properties.

    摘要翻译: 描述了用于从NMR测量估计流体或岩石性质的方法和相关系统。 提供了可以直接提供弛豫时间或扩散分布的时刻的修改的脉冲序列。 该脉冲序列可以适应于所需的弛豫时间或扩散系数。 来自该脉冲序列的数据提供流体性质的直接估计,例如烃的平均链长和粘度。 与均匀间隔的脉冲序列相比,这些脉冲序列更快,在计算流体特性时具有较低的误差。

    Methods and Apparatus to Process Time Series Data for Propagating Signals in A Subterranean Formation
    10.
    发明申请
    Methods and Apparatus to Process Time Series Data for Propagating Signals in A Subterranean Formation 审中-公开
    用于处理地层中传播信号的时间序列数据的方法和装置

    公开(公告)号:US20120201096A1

    公开(公告)日:2012-08-09

    申请号:US13497252

    申请日:2010-10-27

    IPC分类号: G01V1/40

    CPC分类号: G01V1/44

    摘要: Methods and apparatus to process time series data for propagating signals in a subterranean formation are disclosed. An example method described herein for processing measured data comprises receiving a time series of measured data obtained by sensing a propagating signal, the propagating signal having passed through a subterranean formation, transforming the time series of measured data to generate a time-frequency representation of the time series, and processing the time-frequency representation to at least one of reduce noise in the time frequency representation, or enhance a component of the propagating signal present in the time-frequency representation.

    摘要翻译: 公开了处理地层中传播信号的时间序列数据的方法和装置。 本文描述的用于处理测量数据的示例性方法包括接收通过感测传播信号获得的测量数据的时间序列,传播信号已经通过地下地层,变换测量数据的时间序列以产生时间序列 时间序列,并且将时间频率表示处理为时间频率表示中的减少噪声中的至少一个,或增强存在于时间频率表示中的传播信号的分量。