公开(公告)号：US10317556B2

公开(公告)日：2019-06-11

申请号：US15010730

申请日：2016-01-29

Applicant: BAKER HUGHES INCORPORATED

Inventor： Xiaochu Yao ,  Wei Han ,  Quming Zhou ,  Hao Zhang

IPC: G01V1/40 ,  G01V1/50

Abstract: Systems, devices, and methods for evaluating a volume of interest of an earth formation. Methods include estimating a parameter of interest of a volume of the formation using a value of a signal property (frequency amplitude) for a second harmonic mode signal component of a detected acoustic signal from the volume. Methods may include activating a transmitter to propagate an acoustic wave through the volume; producing the detected acoustic signal at a receiver responsive to the acoustic wave; and identifying the fundamental mode signal and the second harmonic mode signal associated with the detected acoustic signal. Methods include estimating an acoustic wave non-linearity parameter (β) for the volume using a relationship between the value of the signal property of the second harmonic mode signal component and a value of the signal property for a fundamental mode signal component of the detected acoustic signal.

公开(公告)号：US10465509B2

公开(公告)日：2019-11-05

申请号：US15291797

申请日：2016-10-12

Applicant: BAKER HUGHES INCORPORATED

Inventor： Xiaochu Yao ,  Otto N. Fanini ,  Wei Han ,  Mohamed Daoud

IPC: E21B49/00 ,  G01V1/50

Abstract: Methods, systems, devices, and products for well logging using a logging tool in a borehole in an earth formation. Methods include conveying the logging tool in the borehole on a carrier; taking acoustic well logging measurements with the logging tool including generating a multitone acoustic beam from at least one transmitter on the tool, the beam comprising a high frequency signal modulated by a low frequency envelope, the high frequency signal including a first subsignal at a first frequency and a second subsignal at a second frequency, and generating measurement information at at least one acoustic receiver on the logging tool in response to a plurality of acoustic reflections of the acoustic beam from at least one volume of interest in the formation; and estimating a property of the volume of interest using the measurement information.

公开(公告)号：US10222501B2

公开(公告)日：2019-03-05

申请号：US15409200

申请日：2017-01-18

Applicant: BAKER HUGHES INCORPORATED

Inventor： Zhijuan Zhang ,  Douglas J. Patterson ,  Roger R. Steinsiek ,  Wei Han

IPC: G01V1/50 ,  E21B47/00 ,  G01V1/40 ,  G01V1/34 ,  G01V1/52

Abstract: Systems, devices, and methods for evaluating an earth formation intersected by a borehole using signals produced at a plurality of borehole depths by an ultrasonic transducer in the borehole, the signals produced by the transducer including ringdown signals from the ultrasonic transducer and echo signals from a wall of the borehole from a plurality of azimuthal orientations. Methods include using peak amplitude values and arrival time values from the signals to construct a background modulation template corresponding to at least one depth; estimating, for each respective depth of the plurality of borehole depths, an azimuthally varying interference pattern predominantly resulting from a ringdown signal for each respective depth by mapping the modulation template to arrival time values corresponding to the respective depth; and subtracting, for each respective depth, the estimated varying interference pattern from the peak amplitude values corresponding to the respective depth to generate adjusted peak amplitudes.

公开(公告)号：US20180372902A1

公开(公告)日：2018-12-27

申请号：US15632024

申请日：2017-06-23

Applicant: BAKER HUGHES INCORPORATED

Inventor： Wei Han ,  Jason M. Harris ,  Douglas J. Patterson ,  Stephen Dymmock ,  John Dahl

IPC: G01V1/50

Abstract: Methods and apparatus for performing formation evaluation in a borehole intersecting an earth formation. Methods may include exciting at a first borehole depth at least one critical refraction wave by steering an acoustic beam transmitted by at least one ultrasonic transmitter to an interface in the formation to intercept the interface at a critical angle; receiving an acoustic signal comprising critical refraction wave data at a logging tool in the borehole; and obtaining a wave property measurement from the critical refraction wave data. The interface may be the borehole wall in an open-hole well or behind casing. Methods include using ultrasonic transmitter(s) to generate the plurality of acoustic beams, identifying critical refraction wave data within the response signal corresponding to the at least one critical refraction wave, and obtaining the wave property measurement from the critical refraction wave data.

公开(公告)号：US09702855B2

公开(公告)日：2017-07-11

申请号：US14472367

申请日：2014-08-29

Applicant: Baker Hughes Incorporated

Inventor： Wei Han ,  Rocco DiFoggio

IPC: G01N29/00 ,  G01D5/12 ,  G01N29/28

CPC classification number: G01N29/28

Abstract: A system is provided including an acoustic interface device, configured for coupling to a transducer and to a specimen, the acoustic interface device comprising a material composition having a shear wave attenuation coefficient αS of at least about 5 dB/cm when subjected to an acoustic signal at a frequency between about 200 to 500 kHz. The acoustic interface device may be formed of polytetrafluoroethylene (Teflon®), a perfluoroalkoxy alkane (PFA), polycarbonate (Lexan®), or polyether ether ketone (PEEK). Methods of using the acoustic interface device with a transducer for ultrasonic measurement of a specimen are also disclosed.

公开(公告)号：US20160061629A1

公开(公告)日：2016-03-03

申请号：US14472367

申请日：2014-08-29

Applicant: Baker Hughes Incorporated

Inventor： Wei Han ,  Rocco DiFoggio

IPC: G01D5/12 ,  G01N29/00

CPC classification number: G01N29/28

Abstract: A system is provided including an acoustic interface device, configured for coupling to a transducer and to a specimen, the acoustic interface device comprising a material composition having a shear wave attenuation coefficient as of at least about 5 dB/cm when subjected to an acoustic signal at a frequency between about 200 to 500 kHz. The acoustic interface device may be formed of polytetrafluoroethylene (Teflon®), a perfluoroalkoxy alkane (PFA), polycarbonate (Lexan®), or polyether ether ketone (PEEK). Methods of using the acoustic interface device with a transducer for ultrasonic measurement of a specimen are also disclosed.

Abstract translation: 提供了一种系统，包括声学接口装置，被配置为耦合到换能器和试样，所述声学接口装置包括当经受声信号时具有至少约5dB / cm的剪切波衰减系数的材料组合物 在约200至500kHz之间的频率。 声学接口装置可以由聚四氟乙烯（Teflon），全氟烷氧基烷烃（PFA），聚碳酸酯（Lexan）或聚醚醚酮（PEEK））形成。 还公开了使用声学接口装置与用于样品的超声波测量的换能器的方法。