Electromagnetic and Magnetostatic Shield to Perform Measurements Ahead of the Drill Bit
    1.
    发明申请
    Electromagnetic and Magnetostatic Shield to Perform Measurements Ahead of the Drill Bit 有权
    电磁和静电屏蔽在钻头前进行测量

    公开(公告)号:US20090237084A1

    公开(公告)日:2009-09-24

    申请号:US12401440

    申请日:2009-03-10

    IPC分类号: G01V3/18

    CPC分类号: G01V3/28

    摘要: A transmitter on a bottomhole assembly (BHA) is used for generating a transient electromagnetic signal in an earth formation. A pair of receivers on the BHA receive signals that are indicative of formation resistivity and distances to bed boundaries. A time dependent calibration factor or a time-independent calibration factor may be used to combine the two received signals and estimate the distance to bed boundaries that are unaffected by the drill conductive body. Further improvement can be obtained by using copper shielding.

    摘要翻译: 井底组件(BHA)上的发射器用于在地层中产生瞬态电磁信号。 BHA上的一对接收器接收指示地层电阻率和与床边界距离的信号。 可以使用时间相关的校准因子或时间无关的校准因子来组合两个接收的信号并且估计不受钻孔导电体影响的床边界的距离。 通过使用铜屏蔽可以进一步改善。

    Electromagnetic and magnetostatic shield to perform measurements ahead of the drill bit
    2.
    发明授权
    Electromagnetic and magnetostatic shield to perform measurements ahead of the drill bit 有权
    电磁和静磁屏蔽在钻头前进行测量

    公开(公告)号:US07994790B2

    公开(公告)日:2011-08-09

    申请号:US12401440

    申请日:2009-03-10

    IPC分类号: G01V3/08 G01V3/10

    CPC分类号: G01V3/28

    摘要: A transmitter on a bottomhole assembly (BHA) is used for generating a transient electromagnetic signal in an earth formation. A pair of receivers on the BHA receive signals that are indicative of formation resistivity and distances to bed boundaries. A time dependent calibration factor or a time-independent calibration factor may be used to combine the two received signals and estimate the distance to bed boundaries that are unaffected by the drill conductive body. Further improvement can be obtained by using copper shielding.

    摘要翻译: 井底组件(BHA)上的发射器用于在地层中产生瞬态电磁信号。 BHA上的一对接收器接收指示地层电阻率和与床边界距离的信号。 可以使用时间相关的校准因子或时间无关的校准因子来组合两个接收的信号并且估计不受钻孔导电体影响的床边界的距离。 通过使用铜屏蔽可以进一步改善。

    Method and apparatus for eliminating drill effect in pulse induction measurements
    3.
    发明授权
    Method and apparatus for eliminating drill effect in pulse induction measurements 有权
    消除脉冲感应测量中钻头效应的方法和装置

    公开(公告)号:US08332152B2

    公开(公告)日:2012-12-11

    申请号:US12077338

    申请日:2008-03-19

    IPC分类号: G01V1/40 G01V3/18 G01V9/00

    CPC分类号: G01V3/28

    摘要: A method and apparatus provide a time-dependent calibration to essentially eliminate pipe effect in pulse-induction logging while drilling. Use of two receivers to provide calibration and measurement information allows determination of formation properties in a downhole environment while eliminating the effect of tool effects.

    摘要翻译: 一种方法和装置提供时间依赖性校准,以在钻孔时基本上消除脉冲诱导测井中的管道效应。 使用两个接收器提供校准和测量信息可以在井下环境中确定地层特性,同时消除工具效应的影响。

    Method and apparatus for eliminating drill effect in pulse induction measurements
    4.
    发明申请
    Method and apparatus for eliminating drill effect in pulse induction measurements 有权
    消除脉冲感应测量中钻头效应的方法和装置

    公开(公告)号:US20090240435A1

    公开(公告)日:2009-09-24

    申请号:US12077338

    申请日:2008-03-19

    IPC分类号: G01V3/38

    CPC分类号: G01V3/28

    摘要: A method and apparatus provide a time-dependent calibration to essentially eliminate pipe effect in pulse-induction logging while drilling. Use of two receivers to provide calibration and measurement information allows determination of formation properties in a downhole environment while eliminating the effect of tool effects.

    摘要翻译: 一种方法和装置提供时间依赖性校准,以在钻孔时基本上消除脉冲诱导测井中的管道效应。 使用两个接收器提供校准和测量信息可以在井下环境中确定地层特性,同时消除工具效应的影响。

    Multi-component resistivity logging tool with multiple antennas using common antenna grooves
    5.
    发明授权
    Multi-component resistivity logging tool with multiple antennas using common antenna grooves 有权
    具有多个天线的多分量电阻率测井仪使用公共天线槽

    公开(公告)号:US07839149B2

    公开(公告)日:2010-11-23

    申请号:US12350099

    申请日:2009-01-07

    IPC分类号: G01V3/10

    CPC分类号: G01V3/28

    摘要: The disclosure provides a resistivity tool for use in a wellbore, wherein at least two orthogonal antennas are located at the same or substantially the same location of the tool. A single set of vertically aligned grooves is provided for the at least two orthogonal antennas. Each antenna may be configured to operate as a transmitter or receiver. A tool with collocated antennas may be used to provide azimuthally sensitive measurements even if the tool is non-rotating.

    摘要翻译: 本公开提供了一种用于井眼的电阻率工具,其中至少两个正交天线位于工具的相同或基本相同的位置。 为至少两个正交天线提供单组垂直排列的凹槽。 每个天线可以被配置为作为发射机或接收机工作。 即使工具不旋转,也可以使用具有并置天线的工具来提供方位灵敏度测量。

    Method for Building Multi-Component Electromagnetic Antennas
    6.
    发明申请
    Method for Building Multi-Component Electromagnetic Antennas 有权
    建立多分量电磁天线的方法

    公开(公告)号:US20090179647A1

    公开(公告)日:2009-07-16

    申请号:US12350099

    申请日:2009-01-07

    IPC分类号: G01V3/28

    CPC分类号: G01V3/28

    摘要: The disclosure provides a resistivity tool for use in a wellbore, wherein at least two orthogonal antennas are located at the same or substantially the same location of the tool. A single set of vertically aligned grooves is provided for the at least two orthogonal antennas. Each antenna may be configured to operate as a transmitter or receiver. A tool with collocated antennas may be used to provide azimuthally sensitive measurements even if the tool is non-rotating.

    摘要翻译: 本公开提供了一种用于井眼的电阻率工具,其中至少两个正交天线位于工具的相同或基本相同的位置。 为至少两个正交天线提供单组垂直排列的凹槽。 每个天线可以被配置为作为发射机或接收机工作。 即使工具不旋转,也可以使用具有并置天线的工具来提供方位灵敏度测量。

    Method for compensating drill pipe and near-borehole effect on and electronic noise in transient resistivity measurements
    7.
    发明授权
    Method for compensating drill pipe and near-borehole effect on and electronic noise in transient resistivity measurements 有权
    用于补偿钻杆和近井眼效应的方法以及瞬态电阻率测量中的电子噪声

    公开(公告)号:US08008919B2

    公开(公告)日:2011-08-30

    申请号:US12402592

    申请日:2009-03-12

    IPC分类号: G01V3/08 G01V3/00

    CPC分类号: G01V3/28

    摘要: Transient measurements made at two spaced apart receivers responsive to separate activation of two transmitters symmetrically disposed about the two receivers. The transmitters and receivers are on an instrument having a conductive body induces currents in the earth formation. The effect of the conductive body is removed by using deconvolving the signal at one receiver using the measured signal at the other receiver. The symmetric transmitter configuration also enables compensation for receiver differences.

    摘要翻译: 在两个间隔开的接收器进行的瞬态测量响应于两个对称地布置在两个接收器周围的两个发射器的分离激活。 发射器和接收器在具有导电体的仪器上引起地层中的电流。 通过使用在另一个接收器处的测量信号在一个接收机处去除信号来消除导电体的影响。 对称发射机配置还可以补偿接收机的差异。

    Method of calibrating an azimuthal inductive cross-coil or tilted coil instrument
    8.
    发明授权
    Method of calibrating an azimuthal inductive cross-coil or tilted coil instrument 有权
    校准方位感应交叉线圈或倾斜线圈仪的方法

    公开(公告)号:US07915895B2

    公开(公告)日:2011-03-29

    申请号:US11767359

    申请日:2007-06-22

    IPC分类号: G01V3/28

    CPC分类号: G01V3/28

    摘要: A phase error in measurements made by a resistivity logging tool is estimated by positioning the tool above a conducting surface. Deviation of the measured phase difference between the transmitter and the receiver from 90° gives the phase error in the electronics. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

    摘要翻译: 通过将工具放置在导电表面上方来估计电阻率测井仪测量的相位误差。 发射器和接收器之间的测量相位差的偏差从90°给出了电子设备中的相位误差。 要强调的是,该摘要被提供以符合要求摘要的规则,这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是,它不会用于解释或限制权利要求的范围或含义。

    Method of generating a deep resistivity image in LWD measurements
    9.
    发明授权
    Method of generating a deep resistivity image in LWD measurements 有权
    在LWD测量中产生深电阻率图像的方法

    公开(公告)号:US07894990B2

    公开(公告)日:2011-02-22

    申请号:US12013859

    申请日:2008-01-14

    IPC分类号: G01V7/00

    CPC分类号: G01V3/28

    摘要: A pseudo-image is produced by combining deep-reading azimuthally sensitive resistivity measurements with azimuthally insensitive resistivity measurements made by a multiple propagation resistivity tool. This image is useful in reservoir navigation. Features on the azimuthally sensitive measurements such as saddle-points and mid-points are diagnostic of bed geometry relative to the borehole.

    摘要翻译: 通过将深读方位敏感电阻率测量与由多传播电阻率工具进行的方位不敏感电阻率测量结合来产生伪图像。 此图像在油藏导航中非常有用。 诸如鞍点和中点等方位角敏感测量的特征是相对于钻孔的床几何形状的诊断。

    Apparatus and Method for Azimuthal MWD Resistivity Imaging at Multiple Depths of Investigation
    10.
    发明申请
    Apparatus and Method for Azimuthal MWD Resistivity Imaging at Multiple Depths of Investigation 有权
    多重深度方位角MWD电阻率成像装置及方法

    公开(公告)号:US20090085570A1

    公开(公告)日:2009-04-02

    申请号:US11865844

    申请日:2007-10-02

    IPC分类号: G01V3/30 G01V3/34

    CPC分类号: G01V3/28

    摘要: A combination of a shallow-reading and a deep-reading, azimuthally sensitive, multiple propagation devices is used for providing depth images the earth formation with different depth of investigation. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

    摘要翻译: 浅读取和深度读数,方位角敏感的多重传播设备的组合被用于为深度图像提供具有不同深度调查深度的地层。 要强调的是,该摘要被提供以符合要求摘要的规则,这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是,它不会用于解释或限制权利要求的范围或含义。 37 CFR 1.72(b)。