Constrained backscatter gamma ray casing and cement inspection tool

    公开(公告)号:US10185052B2

    公开(公告)日:2019-01-22

    申请号:US15383978

    申请日:2016-12-19

    Abstract: Methods, systems, devices, and products for estimating at least one parameter of interest of a volume of interest of an earth formation using nuclear radiation based measurements. Logging tools include a limited aperture collimated radiation beam source, detectors, and at least one processor configured to take measurements. The source is configured to emit a beam of radiation radially from the logging tool into an elongated volume of interest outside the wellbore such that the beam penetrates a plurality of zones of the volume of interest. Each zone represents a range of radial depths corresponding to a respective infrastructure component associated with the wellbore, such as nested tubulars. Each detector has a unique angle of detection and is configured to generate measurement information in response to spatially coherent backscattered gamma rays. Each detector is associated with scattering events at one of the plurality of zones.

    SENSOR CONFIGURATION
    2.
    发明申请

    公开(公告)号:US20200063547A1

    公开(公告)日:2020-02-27

    申请号:US16488833

    申请日:2017-03-17

    Abstract: A sensor configuration including a centralizer having a rib, a hollow defined within the rib, and a sensor positioned within the hollow. A borehole system including a borehole, a tubular string disposed within the borehole, a centralizer having a rib, and the rib defining a hollow, disposed upon the tubular string, a sensor within the hollow. A method for acquiring data in a borehole including running a sensor configuration as in any prior embodiment on a tubular string into a borehole, cementing the tubular string in the borehole, and sensing with the sensor configuration, a parameter in the borehole.

    Use of Lamb and SH Attenuations to Estimate Cement Vp and Vs in Cased Borehole
    3.
    发明申请
    Use of Lamb and SH Attenuations to Estimate Cement Vp and Vs in Cased Borehole 有权
    使用羔羊和SH衰减估算套管井眼中的水泥Vp和Vs

    公开(公告)号:US20140177389A1

    公开(公告)日:2014-06-26

    申请号:US13726215

    申请日:2012-12-23

    CPC classification number: E21B47/0005 G01V1/284 G01V1/50

    Abstract: A method of determining properties of a bonding material disposed outside of a casing in a borehole includes at least two of the following three pairs of operations: (1) inducing an acoustic wave in the casing, and measuring attenuation of the acoustic wave, by pulse-echo or other cement bond logging measurement; (2) inducing an SH wave in the casing, and measuring attenuation of the SH wave; and (3) inducing a Lamb wave in the casing, and measuring attenuation of the Lamb wave. (2) and/or (3) may be performed by an electromagnetic acoustic transducer. The method further includes determining the shear velocity or shear impedance and the compressional velocity or compressional impedance of the bonding material based on appropriate ones of the measurements. The bonding material may be cement.

    Abstract translation: 一种确定钻孔外壳上的接合材料的性质的方法包括以下三对操作中的至少两个:(1)在壳体中引起声波,并通过脉冲测量声波的衰减 -echo或其他水泥粘结测井测量; (2)在壳体内引起SH波,测量SH波的衰减; 和(3)在外壳中诱导兰姆波,并测量兰姆波的衰减。 (2)和/或(3)可以由电磁声换能器来执行。 该方法还包括基于适当的测量结果确定接合材料的剪切速度或剪切阻抗以及压缩速度或压缩阻抗。 接合材料可以是水泥。

    Use of Lamb and SH attenuations to estimate cement Vp and Vs in cased borehole
    4.
    发明授权
    Use of Lamb and SH attenuations to estimate cement Vp and Vs in cased borehole 有权
    使用羔羊和SH衰减来估计套管井眼中的水泥Vp和Vs

    公开(公告)号:US09273545B2

    公开(公告)日:2016-03-01

    申请号:US13726215

    申请日:2012-12-23

    CPC classification number: E21B47/0005 G01V1/284 G01V1/50

    Abstract: A method of determining properties of a bonding material disposed outside of a casing in a borehole includes at least two of the following three pairs of operations: (1) inducing an acoustic wave in the casing, and measuring attenuation of the acoustic wave, by pulse-echo or other cement bond logging measurement; (2) inducing an SH wave in the casing, and measuring attenuation of the SH wave; and (3) inducing a Lamb wave in the casing, and measuring attenuation of the Lamb wave. (2) and/or (3) may be performed by an electromagnetic acoustic transducer. The method further includes determining the shear velocity or shear impedance and the compressional velocity or compressional impedance of the bonding material based on appropriate ones of the measurements. The bonding material may be cement.

    Abstract translation: 一种确定钻孔外壳上的接合材料的性质的方法包括以下三对操作中的至少两个:(1)在壳体中引起声波,并通过脉冲测量声波的衰减 -echo或其他水泥粘结测井测量; (2)在壳体内引起SH波,测量SH波的衰减; 和(3)在外壳中诱导兰姆波,并测量兰姆波的衰减。 (2)和/或(3)可以由电磁声换能器来执行。 该方法还包括基于适当的测量结果确定接合材料的剪切速度或剪切阻抗以及压缩速度或压缩阻抗。 接合材料可以是水泥。

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