Method for Determining Drilling Fluid Induced Fractures
    1.
    发明申请
    Method for Determining Drilling Fluid Induced Fractures 审中-公开
    确定钻井液诱导骨折的方法

    公开(公告)号:US20160290125A1

    公开(公告)日:2016-10-06

    申请号:US14673598

    申请日:2015-03-30

    CPC classification number: E21B47/122 E21B49/00 G01V3/18 G01V3/30

    Abstract: A tool is for use in a borehole during drilling with a drilling fluid circulating in the borehole. The tool may include a housing, a plurality of spaced apart radio frequency (RF) transmitters carried by the housing, spaced apart RF receivers carried by the housing, and a controller to communicate with the plurality of transmitters and the receivers. The controller may, at a given depth within the borehole, determine attenuation resistivity measurements and phase-shift resistivity measurements both corresponding to different radial distances from the borehole. The controller may also determine when a fracture has occurred in the geological formation at the given depth allowing the drilling fluid to intrude into the geological formation based upon the attenuation resistivity measurements and the phase-shift resistivity measurements.

    Abstract translation: 钻井中钻井液在钻孔中循环的工具用于钻孔。 工具可以包括壳体,由壳体承载的多个间隔开的射频(RF)发射器,由壳体承载的间隔开的RF接收器以及与多个发射器和接收器通信的控制器。 控制器可以在钻孔内的给定深度处确定对应于距钻孔的不同径向距离的衰减电阻率测量值和相移电阻率测量值。 控制器还可以基于衰减电阻率测量和相移电阻率测量来确定给定深度处的地质层中何时发生断裂,允许钻井液侵入地质层。

    Methods for Determining Dielectric Permittivity Spectrum of Underground Rock Formations
    3.
    发明申请
    Methods for Determining Dielectric Permittivity Spectrum of Underground Rock Formations 审中-公开
    确定地下岩层介电常数谱的方法

    公开(公告)号:US20150025807A1

    公开(公告)日:2015-01-22

    申请号:US14510058

    申请日:2014-10-08

    CPC classification number: G01V3/18 E21B47/00 G01N27/00 G01N33/24 G01V3/30 G01V3/38

    Abstract: Techniques involve determining the frequency-dependent dielectric permittivity spectrum of a rock sample. Determining the frequency-dependent dielectric permittivity may involve defining a series of electromagnetic measurement data having at least a measurement at a frequency from which a substantially frequency-independent value of dielectric permittivity ε∞ can be obtained. The electromagnetic measurement data also includes measurements at different frequencies from which values for frequency-dependent dielectric permittivity εrock (f) can be obtained. Using these measurements, the frequency-dependent spectrum of the sample may be determined.

    Abstract translation: 技术涉及确定岩石样品的频率相关介电常数谱。 确定频率相关的介电常数可以包括定义一系列电磁测量数据,该电磁测量数据至少具有可以从其获得基本上与频率无关的介电常数值和等级的频率的测量值。 电磁测量数据还包括在不同频率的测量,从中可以获得频率相关的介电常数和岩石值(f)。 使用这些测量,可以确定样品的频率相关光谱。

    Extended 1D inversion of electromagnetic measurements for formation evaluation

    公开(公告)号:US10345475B2

    公开(公告)日:2019-07-09

    申请号:US14782149

    申请日:2014-04-02

    Abstract: A method to determine at least one formation property of a subterranean formation includes providing a downhole electromagnetic logging tool having at least one transmitter array and one receiver array to acquire measurements in the formation. The method further includes performing a first inversion in response to the measurements, assuming dip or dip azimuth is constant in an inversion zone within the formation to obtain an inverted formation model. The method includes determining an n-th order partial derivative matrix of at least one of dip or dip azimuth, wherein n is greater than or equal to 1. The method includes performing a second inversion using the determined n-th order partial derivative matrix, wherein at least one of dip and dip azimuth are allowed to vary in the inversion zone, to obtain an updated formation model. The method includes determining the formation property using the updated formation model.

    Method for Determining Triaxial Conductivity with Arbitrary Orientation Using Multiaxial Electromagnetic Measurements
    5.
    发明申请
    Method for Determining Triaxial Conductivity with Arbitrary Orientation Using Multiaxial Electromagnetic Measurements 审中-公开
    使用多轴电磁测量任意方向确定三轴电导率的方法

    公开(公告)号:US20160230511A1

    公开(公告)日:2016-08-11

    申请号:US14975620

    申请日:2015-12-18

    CPC classification number: G06F17/16 E21B43/26 G01V3/28 G01V3/38 G01V99/005

    Abstract: A system and method of performing a fracture operation at a wellsite about a subterranean formation is disclosed. The method involves, obtaining wellsite measurements by placing a downhole tool in a wellbore and using the downhole tool to acquire measurements of the subterranean formation, simulating the obtained wellsite measurements to determine formation parameters comprising conductivity tensors based on a formation model of the measured subterranean formation, validating the formation model by comparing the obtained wellsite measurements with the simulated wellsite measurements, generating fracture parameters and triaxiality indicators based on the validated formation model, and fracturing the subterranean formation based on the generated fracture parameters and triaxiality indicators.

    Abstract translation: 公开了一种在围绕地层的井场进行断裂操作的系统和方法。 该方法涉及通过将井下工具放置在井眼中并使用井下工具来获取地下地层的测量值来模拟所获得的井场测量值,以基于所测量的地下地层的地层模型来确定包括导电张量的地层参数 通过将获得的井场测量与模拟井场测量值进行比较,基于验证的地层模型生成断裂参数和三轴度指标,并根据产生的断裂参数和三轴度指标对地下岩层进行压裂,验证地层模型。

    Methods for determining dielectric permittivity spectrum of underground rock formations
    6.
    发明授权
    Methods for determining dielectric permittivity spectrum of underground rock formations 有权
    确定地下岩层介电常数谱的方法

    公开(公告)号:US09465131B2

    公开(公告)日:2016-10-11

    申请号:US14510058

    申请日:2014-10-08

    CPC classification number: G01V3/18 E21B47/00 G01N27/00 G01N33/24 G01V3/30 G01V3/38

    Abstract: Techniques involve determining the frequency-dependent dielectric permittivity spectrum of a rock sample. Determining the frequency-dependent dielectric permittivity may involve defining a series of electromagnetic measurement data having at least a measurement at a frequency from which a substantially frequency-independent value of dielectric permittivity ∈∞ can be obtained. The electromagnetic measurement data also includes measurements at different frequencies from which values for frequency-dependent dielectric permittivity ∈rock (f) can be obtained. Using these measurements, the frequency-dependent spectrum of the sample may be determined.

    Abstract translation: 技术涉及确定岩石样品的频率相关介电常数谱。 确定频率相关的介电常数可以包括定义一系列电磁测量数据,该电磁测量数据至少具有可以获得基本上与频率无关的介电常数ζ值的频率的测量值。 电磁测量数据还包括在不同频率处的测量,从中可以获得频率相关介电常数εrock(f)的值。 使用这些测量,可以确定样品的频率相关光谱。

    Extended 1D Inversion Of Electromagnetic Measurements For Formation Evaluation
    7.
    发明申请
    Extended 1D Inversion Of Electromagnetic Measurements For Formation Evaluation 审中-公开
    电磁测量的扩展1D反演用于形成评估

    公开(公告)号:US20160047934A1

    公开(公告)日:2016-02-18

    申请号:US14782149

    申请日:2014-04-02

    CPC classification number: G01V3/28 G01V3/10 G01V3/104 G01V3/18 G01V3/38

    Abstract: A method to determine at least one formation property of a subterranean formation includes providing a downhole electromagnetic logging tool having at least one transmitter array and one receiver array and acquiring measurements in the formation using the transmitter and receiver arrays of the downhole electromagnetic logging tool. The method further includes performing a first inversion in response to the measurements, wherein at least one of dip or dip azimuth are assumed constant in an inversion zone within the formation to obtain an inverted formation model that comprises at least one of horizontal resistivity (Rh), vertical resistivity (Rv), dip, and dip azimuth. The method includes determining an n-th order partial derivative matrix of at least one of dip or dip azimuth, wherein n is greater than or equal to 1. The method includes performing a second inversion using the determined n-th order partial derivative matrix, wherein at least one of dip and dip azimuth are allowed to vary in the inversion zone, to obtain an updated formation model. The method includes determining the at least one formation property of the formation using the up-dated formation model.

    Abstract translation: 确定地下地层的至少一个地层特性的方法包括提供具有至少一个发射器阵列和一个接收器阵列的井下电磁测井工具,并使用井下电磁测井工具的发射器和接收器阵列获取地层中的测量结果。 该方法还包括响应于测量执行第一反演,其中在地层内的反转区域中假定浸入或倾角方位角中的至少一个是恒定的,以获得反向地层模型,其包括水平电阻率(Rh) ,垂直电阻率(Rv),倾角和倾角方位。 该方法包括确定浸入或倾角方位中的至少一个的n阶偏导数矩阵,其中n大于或等于1.该方法包括使用所确定的n阶偏导数矩阵来执行第二反演, 其中允许在反转区域中倾斜和倾斜方位角中的至少一个变化,以获得更新的形成模型。 该方法包括使用更新的地层模型确定地层的至少一个地层性质。

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