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公开(公告)号：US10725195B2
公开(公告)日：2020-07-28
申请号：US15762476
申请日：2016-09-08
Applicant: Schlumberger Technology Corporation
Inventor： Peter Wu
Abstract: Described herein is a method including acquiring a set of transimpedance coupling voltages, between different antenna components of different axes of a transmitting station transmitting into a formation and different antenna components of different axes of a receiving station receiving from the formation, using an induction tool undergoing random movement during the acquisition. Fourier coefficients for the set of transimpedance coupling voltages are determined using a least square process. A mean tool eccentering azimuthal angle and an apparent formation azimuthal angle are estimated as a function of the Fourier coefficients. Compensated measurements are computed as a function of the Fourier coefficients. An inversion loop receives as input the compensated measurements, the estimated mean tool eccentering azimuthal angle, and the estimated apparent formation azimuth, and outputs final parameters as a function thereof.
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2.发明申请Multiaxial Well Logging Instrument Response in Dipping and Crossbedded Formations 审中-公开多轴测井仪器在浸渍和交叉组合中的响应公开(公告)号：US20150276966A1
公开(公告)日：2015-10-01
申请号：US14669683
申请日：2015-03-26
Applicant: Schlumberger Technology Corporation
Inventor： Gong Li Wang , Thomas Barber , Peter Wu , David F. Allen , Aria Abubakar
Abstract: A method for determining resistivity of subsurface formations includes generating an initial model of the formations from multiaxial electromagnetic transimpedance measurements, the model comprising values of vertical resistivity, horizontal resistivity, crossbed dip, crossbed azimuth, and bedding dip and azimuth. Expected measurements generated from the initial model measurements are decomposed into ordinary and extraordinary components. The actual tool measurements are compared to the summation of the expected decomposed measurement components. The initial model is adjusted, the expected decomposed components are recalculated and the foregoing are repeated until the difference between the actual tool measurements and the summation of the expected decomposed components falls below a selected threshold.
Abstract translation: 用于确定地下地层电阻率的方法包括从多轴电磁互阻测量产生地层的初始模型，该模型包括垂直电阻率，水平电阻率，交叉倾角，交叉方位角以及铺垫倾角和方位角的值。 从初始模型测量产生的预期测量值被分解为普通和非凡的组件。 将实际的刀具测量与预期分解的测量组件的总和进行比较。 调整初始模型，重新计算预期的分解组分，并重复上述内容，直到实际工具测量值与预期分解组分的总和之间的差值低于选定的阈值。
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公开(公告)号：US20180299577A1
公开(公告)日：2018-10-18
申请号：US15762476
申请日：2016-09-08
Applicant: Schlumberger Technology Corporation
Inventor： Peter Wu
Abstract: Described herein is a method including acquiring a set of transimpedance coupling voltages, between different antenna components of different axes of a transmitting station transmitting into a formation and different antenna components of different axes of a receiving station receiving from the formation, using an induction tool undergoing random movement during the acquisition. Fourier coefficients for the set of transimpedance coupling voltages are determined using a least square process. A mean tool eccentering azimuthal angle and an apparent formation azimuthal angle are estimated as a function of the Fourier coefficients. Compensated measurements are computed as a function of the Fourier coefficients. An inversion loop receives as input the compensated measurements, the estimated mean tool eccentering azimuthal angle, and the estimated apparent formation azimuth, and outputs final parameters as a function thereof.
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公开(公告)号：US10444399B2
公开(公告)日：2019-10-15
申请号：US14669683
申请日：2015-03-26
Applicant: Schlumberger Technology Corporation
Inventor： Gong Li Wang , Thomas Barber , Peter Wu , David F. Allen , Aria Abubakar
Abstract: A method for determining resistivity of subsurface formations includes generating an initial model of the formations from multiaxial electromagnetic transimpedance measurements, the model comprising values of vertical resistivity, horizontal resistivity, crossbed dip, crossbed azimuth, and bedding dip and azimuth. Expected measurements generated from the initial model measurements are decomposed into ordinary and extraordinary components. The actual tool measurements are compared to the summation of the expected decomposed measurement components. The initial model is adjusted, the expected decomposed components are recalculated and the foregoing are repeated until the difference between the actual tool measurements and the summation of the expected decomposed components falls below a selected threshold.
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