Apparatus for monitoring a positional relationship between a boring tool and an inground line
    12.
    发明授权
    Apparatus for monitoring a positional relationship between a boring tool and an inground line 有权
    一种用于监测钻孔工具和镶嵌线之间位置关系的装置

    公开(公告)号:US07786732B2

    公开(公告)日:2010-08-31

    申请号:US12139776

    申请日:2008-06-16

    摘要: In a system having a boring tool and an above-ground portable locator for locating the boring tool as moved by a drill string in a region which includes an in-ground line, an apparatus is described for monitoring the positional relationship between the boring tool and the line. The apparatus includes a transmitter for generating a magnetic locating field from one of the boring tool or an underground length of the line. A receiver is carried by the boring tool if the field is generated from the line, or connected to the line if the field is generated from the boring tool, for detecting an intensity of the magnetic locating field to produce a magnetic field intensity indicative signal that is indicative of the positional relationship between the boring tool and the line. A remote display indicates the detected intensity of the magnetic locating field.

    摘要翻译: 在具有钻孔工具和地上便携式定位器的系统中,用于定位钻孔工具在包括地面线的区域中由钻柱移动的装置,用于监测钻孔工具和 线。 该装置包括用于从钻孔工具中的一个或线的地下长度产生磁定位区的发射器。 如果场是从线产生的,则接收器由钻孔工具承载,或者如果该场是从钻孔工具产生的,则连接到该线,用于检测磁定位场的强度以产生磁场强度指示信号, 表示钻孔工具与线之间的位置关系。 远程显示器指示检测到的磁定位域的强度。

    High resolution resistivity earth imager
    14.
    发明申请
    High resolution resistivity earth imager 有权
    高分辨率电阻率地球成像仪

    公开(公告)号:US20070046290A1

    公开(公告)日:2007-03-01

    申请号:US11209531

    申请日:2005-08-23

    IPC分类号: G01V3/02 G01V3/04 G01V3/06

    CPC分类号: G01V3/24

    摘要: Phase-sensitive measurements are made by a resistivity imaging tool in a borehole having non-conductive mud in a conductive earth formation at a plurality of frequencies. From the phase sensitive measurements, the formation resistivity can be determined with higher sensitivity than is possible with the single frequency measurements. Tool standoff can also be determined from a knowledge of the mud resistivity and/or dielectric constant. Formation resistivity may also be determined when the effect of formation capacitance cannot be ignored.

    摘要翻译: 在具有多个频率的导电地层中的非导电泥浆的钻孔中的电阻率成像工具进行相敏测量。 通过相位敏感测量,可以以比单频测量可能的更高的灵敏度确定地层电阻率。 也可以从泥浆电阻率和/或介电常数的知识中确定工具间隔。 当地层电容的影响不能忽视时,也可以确定地层电阻率。

    Method of identifying a buried cable by applying a low frequency signal
to the cable and detecting the resultant field
    17.
    发明授权
    Method of identifying a buried cable by applying a low frequency signal to the cable and detecting the resultant field 失效
    通过对电缆施加低频信号并检测合成场来识别埋地电缆的方法

    公开(公告)号:US6127827A

    公开(公告)日:2000-10-03

    申请号:US776013

    申请日:1997-01-16

    CPC分类号: G01V3/06

    摘要: In order to identify a cable buried underground, a very low frequency voltage signal is applied to the cable and an electric field sensor is brought into proximity with the cable. The sensor thus detects the voltage signal on the cable and so identifies the cable. The sensor is unaffected by one or more additional cables carrying voltage signals, which are proximate the cable of interest, as the electric filters from such additional cables do not pass to the cable of interest. The sensor is mounted on a probe which is mounted into a bore in the soil around the cable of interest. The probes may also carry a magnetometer for detecting magnetic fields generated by low frequency alternating current signals on the cable of interest.

    摘要翻译: PCT No.PCT / GB95 / 01723 Sec。 371日期1997年1月16日 102(e)日期1997年1月16日PCT提交1995年7月21日PCT公布。 出版物WO96 / 03664 日期1996年2月8日为了识别埋在地下的电缆,将极低频电压信号施加到电缆上,并将电场传感器与电缆接近。 因此,传感器检测电缆上的电压信号,从而识别电缆。 传感器不受一个或多个附加电缆的影响,电缆信号靠近感兴趣的电缆,因为这些附加电缆的电气滤波器不会传递到感兴趣的电缆。 传感器安装在探头上,探头安装在感兴趣的电缆周围的土壤中的孔中。 探针还可以携带用于检测感兴趣的电缆上的低频交流信号产生的磁场的磁力计。

    Electrical geophysical methods and apparatus for determining the in-situ
density of porous material
    18.
    发明授权
    Electrical geophysical methods and apparatus for determining the in-situ density of porous material 失效
    用于确定多孔材料原位密度的电子地球物理方法和装置

    公开(公告)号:US5861751A

    公开(公告)日:1999-01-19

    申请号:US851969

    申请日:1997-05-06

    IPC分类号: G01V3/06

    CPC分类号: G01V3/06

    摘要: The invention includes a method and device for determining the in-situ density of a porous material. A resistivity measuring device applies an electrical current through an electrode array to measure the resistivity of the porous material. The resistivity measuring device may also be used to measure the resistivity of a pore filling fluid. A formation factor and in-situ density constants of the porous material are determined using empirical methods. In-situ moisture content of the porous material is determined. The above data is applied to a general geophysical in-situ density equation to calculate the in-situ density of the porous material.

    摘要翻译: 本发明包括用于确定多孔材料的原位密度的方法和装置。 电阻率测量装置通过电极阵列施加电流来测量多孔材料的电阻率。 电阻率测量装置也可用于测量孔隙填充流体的电阻率。 使用经验方法确定多孔材料的形成因子和原位密度常数。 确定多孔材料的原位含水量。 将上述数据应用于一般的地球物理原位密度方程,以计算多孔材料的原位密度。

    Non-destructive method of determining the position and condition of
reinforcing steel in concrete
    19.
    发明授权
    Non-destructive method of determining the position and condition of reinforcing steel in concrete 失效
    确定混凝土中钢筋位置和状况的非破坏性方法

    公开(公告)号:US5855721A

    公开(公告)日:1999-01-05

    申请号:US814912

    申请日:1997-03-12

    IPC分类号: G01N27/20 G01V3/06 B32B31/00

    CPC分类号: G01N27/205 G01V3/06

    摘要: A method of determining the position and condition of reinforcing steel embedded in concrete is described. The method is non-invasive. Electrodes are use to carry out the method by contacting the outer surface of the concrete. The method measures the impedance of selected regions of the concrete by measuring the voltage generated across said selected regions by a current flowing through the concrete.

    摘要翻译: 描述了一种确定混凝土中钢筋的位置和状况的方法。 该方法是非侵入性的。 电极用于通过接触混凝土的外表面来实施该方法。 该方法通过流过混凝土的电流来测量所述选定区域上产生的电压来测量混凝土选定区域的阻抗。

    Towable array for measuring the resistivity of a terrain utilizing a low
power level
    20.
    发明授权
    Towable array for measuring the resistivity of a terrain utilizing a low power level 失效
    用于测量利用低功率水平的地形电阻率的牵引阵列

    公开(公告)号:US5587659A

    公开(公告)日:1996-12-24

    申请号:US90137

    申请日:1993-10-27

    IPC分类号: G01V3/06 G01V3/15 G01V3/165

    CPC分类号: G01V3/15 G01V3/06

    摘要: The measurement equipment serves to map the subsurface geology in a terrain by means of electrical profiling. A plurality of drag electrodes are used for this purpose, the electrodes with specific mutual spacing, being hooked together with a tow in the form of, e.g., a rope or a wire which is towed by a towing means. An electrical current which is so low as to constitute no danger to operators, is transmitted into the earth through the current electrodes and the voltage is measured across the voltage electrodes. A single-ended electrode amplifier is incorporated into each of the voltage electrodes. The method is useful for rapid and detailed mapping of deposits of natural resources, moist site areas, sand and clay localities in connection with road construction and building land as well as water magazines and refuse dumps.

    摘要翻译: PCT No.PCT / DK92 / 00023 Sec。 371日期:1993年10月27日 102(e)日期1993年10月27日PCT提交1992年1月23日PCT公布。 公开号WO92 / 13286 日期1992年8月6日测量设备用于通过电气剖面绘制地形中的地下地质。 为此目的使用多个拖曳电极,具有特定相互间隔的电极通过拖曳装置拖曳的例如绳索或电线的形式的丝束钩在一起。 电流不足以对操作者构成危险的电流通过电流电极传输到地球中,并且跨越电压电极测量电压。 单端电极放大器并入每个电压电极。 该方法有助于快速详细地绘制与道路建设和建筑用地以及水杂志和垃圾堆放有关的自然资源,潮湿地带,沙土和粘土地区的沉积物。