CHARACTERIZING AN EARTH SUBTERRANEAN STRUCTURE BY ITERATIVELY PERFORMING INVERSION BASED ON A FUNCTION
    34.
    发明申请
    CHARACTERIZING AN EARTH SUBTERRANEAN STRUCTURE BY ITERATIVELY PERFORMING INVERSION BASED ON A FUNCTION 有权
    通过基于功能的迭代执行反演来表征地下层结构

    公开(公告)号:US20090157320A1

    公开(公告)日:2009-06-18

    申请号:US12142216

    申请日:2008-06-19

    IPC分类号: G01V3/30 G06F19/00

    CPC分类号: G01V3/38 G01V11/00

    摘要: To characterize an earth subterranean structure using a measurement assembly including electromagnetic (EM) receivers and one or more EM sources, measured voltage data collected by EM receivers in response to transmission by one or more EM sources is received. Based on a model, predicted EM data is computed. Inversion is iteratively performed according to a function that computes a difference between the measured voltage data and a product of a term containing the predicted EM data and a term containing distortion data that accounts at least for distortion effect by an environment of the measurement assembly. The inversion is iteratively performed to solve for parameters of the model and the distortion data.

    摘要翻译: 为了使用包括电磁(EM)接收器和一个或多个EM源的测量组件来表征地球地下结构,接收由EM接收机响应于一个或多个EM源的传输而收集的测量电压数据。 基于模型,计算预测的EM数据。 根据计算测量电压数据与包含预测的EM数据的术语的乘积和包含至少考虑到测量组件的环境的失真效应的失真数据的术语的项的迭代执行反转。 迭代执行反演以求解模型的参数和失真数据。

    Technique for determining properties of earth formations using dielectric permittivity measurements
    36.
    发明授权
    Technique for determining properties of earth formations using dielectric permittivity measurements 有权
    使用介电常数测量确定地层性质的技术

    公开(公告)号:US07363160B2

    公开(公告)日:2008-04-22

    申请号:US11233680

    申请日:2005-09-23

    IPC分类号: G01V3/18

    CPC分类号: G01V3/30 G01V3/26 Y02A90/344

    摘要: Techniques for determining formation characteristics use measurements of dielectric permittivity at a number of frequencies. Determined characteristics include the vertical and horizontal formation dielectric constant and conductivity, the formation water conductivity, the water saturation, the cementation and the saturation exponents. In laminated formations these profiles can be determined for each lamina. Also, formation dielectric properties are used in determination of the rock type.

    摘要翻译: 用于确定地层特征的技术使用多个频率的介电常数的测量。 确定的特征包括垂直和水平地层介电常数和导电性,地层水导电性,水饱和度,胶结和饱和指数。 在层压结构中,可以确定每个层的轮廓。 此外,地层介电性质用于确定岩石类型。

    Data logging
    37.
    发明授权
    Data logging 有权
    数据记录

    公开(公告)号:US07302346B2

    公开(公告)日:2007-11-27

    申请号:US11311609

    申请日:2005-12-19

    IPC分类号: G01V3/18

    CPC分类号: E21B45/00 E21B47/04

    摘要: A device and method for determining a geophysical characteristic of a borehole using at least one logging device is provided, wherein the at least one logging device includes at least one sensing device. The method includes associating the at least one sensing device with the borehole, wherein the at least one sensing device includes a sensing device measurement length. The method also includes operating the at least one sensing device to generate borehole data responsive to a borehole portion disposed essentially adjacent the sensing device measurement length, wherein the borehole data includes start time of scan, location of the at least one sensing device at start time of scan, stop time of scan and location of the at least one sensing device at stop time of scan. Furthermore, the method includes correlating the borehole data to determine the geophysical characteristic.

    摘要翻译: 提供了一种使用至少一个记录装置来确定钻孔的地球物理特性的装置和方法,其中所述至少一个测井装置包括至少一个感测装置。 所述方法包括将所述至少一个感测装置与所述钻孔相关联,其中所述至少一个感测装置包括感测装置测量长度。 所述方法还包括操作所述至少一个感测装置以响应于基本上邻近所述感测装置测量长度设置的钻孔部分而产生钻孔数据,其中所述钻孔数据包括扫描的开始时间,所述至少一个感测装置在开始时的位置 扫描的停止时间,扫描的停止时间和至少一个感测装置在扫描停止时的位置。 此外,该方法包括关联钻孔数据以确定地球物理特性。

    Apparatus and methods for measuring formation characteristics in presence of conductive and non-conductive muds
    39.
    发明申请
    Apparatus and methods for measuring formation characteristics in presence of conductive and non-conductive muds 有权
    用于在导电和非导电泥浆存在下测量地层特性的装置和方法

    公开(公告)号:US20050133262A1

    公开(公告)日:2005-06-23

    申请号:US10744827

    申请日:2003-12-23

    IPC分类号: G01V3/24 E21C25/00

    CPC分类号: G01V3/24 Y02A90/342

    摘要: Tools for investigating an earth formation in the presence of either oil-base or water-base mud are provided and includes a circuit which induces current into the formation in a focused manner, and a sensor electrode which is isolated from the circuit, at least partially surrounded by the circuit, and located in the area in which the current is focused. The current inducing circuit may be an oppositely polarized double-dipole circuit to which voltage is applied with the two dipoles sharing a common radiating element over which a focused area is formed. Insulators are provided that separate the outer electrodes of the double-dipole circuit from the common radiating element. Alternatively, the current inducing circuit is a coil arranged in a partial toroidal configuration in an insulated area that at least partially surrounds the focused area and which separates the focused area from return electrodes.

    摘要翻译: 提供了用于在存在油基或水基泥浆的情况下研究地层的工具,并且包括以聚焦方式将电流引入地层的电路以及与电路隔离的至少部分的传感器电极 被电路包围,并位于电流聚焦的区域。 电流感应电路可以是相反极化的双偶极电路,在该双极偶极子电路中施加电压,两个偶极子共享共同的辐射元件,在其上形成聚焦区域。 提供了将双偶极电路的外部电极与公共辐射元件分开的绝缘体。 或者,电流感应电路是在至少部分地围绕聚焦区域并且将聚焦区域与返回电极分离的绝缘区域中以部分环形构造布置的线圈。