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：US09617851B2

公开(公告)日：2017-04-11

申请号：US14068780

申请日：2013-10-31

Applicant: Baker Hughes Incorporated

Inventor： John Dahl ,  Christopher J. Morgan ,  Michael E. Gillen

IPC: E21B49/00

CPC classification number: E21B49/005

Abstract: Systems, devices, and methods for evaluating cuttings entrained in a downhole fluid in a borehole intersecting an earth formation. Methods may include using at least one sensor to produce information responsive to a reflection of an emitted wave from downhole cuttings in the borehole, wherein the information is indicative of a parameter of interest relating to the downhole cuttings; and processing the information using at least one processor to estimate the parameter of interest. Methods may include using the at least one acoustic sensor to produce corresponding information from each of a plurality of azimuthally distributed orientations about a bottom hole assembly (BHA); and using the at least one processor to estimate from the information from each of the orientations an azimuthal variation of the parameter of interest. The at least one sensor may include acoustic sensors, electromagnetic sensors, and/or optical sensors.

公开(公告)号：US20150114714A1

公开(公告)日：2015-04-30

申请号：US14068780

申请日：2013-10-31

Applicant: Baker Hughes Incorporated

Inventor： John Dahl ,  Christopher J. Morgan ,  Michael E. Gillen

IPC: E21B7/00 ,  E21B47/12 ,  E21B49/00

CPC classification number: E21B49/005

Abstract: Systems, devices, and methods for evaluating cuttings entrained in a downhole fluid in a borehole intersecting an earth formation. Methods may include using at least one sensor to produce information responsive to a reflection of an emitted wave from downhole cuttings in the borehole, wherein the information is indicative of a parameter of interest relating to the downhole cuttings; and processing the information using at least one processor to estimate the parameter of interest. Methods may include using the at least one acoustic sensor to produce corresponding information from each of a plurality of azimuthally distributed orientations about a bottom hole assembly (BHA); and using the at least one processor to estimate from the information from each of the orientations an azimuthal variation of the parameter of interest. The at least one sensor may include acoustic sensors, electromagnetic sensors, and/or optical sensors.

Abstract translation: 用于评估夹带在与地层相交的钻孔中的井下流体中的切屑的系统，装置和方法。 方法可以包括使用至少一个传感器来产生响应于来自钻孔中井下切屑的发射波的反射的信息，其中该信息指示与井下切屑相关的参数参数; 以及使用至少一个处理器来处理所述信息以估计感兴趣的参数。 方法可以包括使用至少一个声传感器从围绕底孔组件（BHA）的多个方位角分布的方向中的每一个产生相应的信息; 以及使用所述至少一个处理器根据来自每个方向的信息来估计感兴趣的参数的方位角变化。 所述至少一个传感器可以包括声学传感器，电磁传感器和/或光学传感器。