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Patent Agency Ranking
公开(公告)号：US10061051B2
公开(公告)日：2018-08-28
申请号：US15280815
申请日：2016-09-29
Applicant: BAKER HUGHES INCORPORATED
Inventor： Babak Kouchmeshky , Otto N. Fanini
CPC classification number: G01V3/30 , E21B47/01 , E21B47/02216 , E21B47/082 , E21B47/102 , E21B47/122 , E21B47/14 , H04Q9/12
Abstract: Systems, methods, and devices for evaluation of an earth formation intersected by a borehole using a logging tool. Methods include exciting an upper and lower transmitter; receiving signals at a plurality of receivers between the upper and lower transmitter; estimating a phase shift attributable to a volume of interest of the formation adjacent to a section of the carrier corresponding to the plurality of receivers by estimating phase shifts attributable only to portions of the volume of interest adjacent to corresponding portions of the section between each adjacent pair of receivers of the plurality of receivers; wherein each adjacent pair is positioned at a corresponding distance that is no more than half of the shortest wavelength of those wavelengths associated with the received signals. Estimating a phase shift between an adjacent pair of receivers may be carried out using a first relative phase value; and a second relative phase value.
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公开(公告)号：US11119239B2
公开(公告)日：2021-09-14
申请号：US15406308
申请日：2017-01-13
Applicant: BAKER HUGHES INCORPORATED
Inventor： Babak Kouchmeshky , Otto N. Fanini , Alberto Mezzatesta
Abstract: Methods and apparatus for evaluating an earth formation intersected by a borehole. Methods include using at least one transmitter to generate electromagnetic (EM) waves propagating through the formation; generating measurement signals at at least one receiver responsive to the propagating EM waves; taking a plurality of propagation measurements from the measurement signals representative of the propagating EM waves, where each propagation measurement of the plurality comprises at least one of: i) a relative phase shift between a first wave of the plurality of propagating EM waves and a second wave of the plurality of propagating EM waves; and ii) a relative attenuation between a first wave of the plurality of propagating EM waves and a second wave of the plurality of propagating EM waves; and performing a single inversion which uses the plurality of propagation measurements as input and generates at least one petrophysical parameter as output.
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公开(公告)号：US20170276832A1
公开(公告)日：2017-09-28
申请号：US15081434
申请日：2016-03-25
Applicant: BAKER HUGHES INCORPORATED
Inventor： Babak Kouchmeshky , RASHID W. KHOKHAR
CPC classification number: G01V99/005 , E21B49/00 , G01V3/08 , G01V3/28
Abstract: Methods and apparatus for evaluating an earth formation for generating a numerical model comprising an expression equating a representation for the effective conductivity under Archie's law with respect to direct current with a function for the effective conductivity representative of the mixing model with respect to direct current; and solving a system of equations to obtain values for the Archie parameters including at least i) the expression; ii) a second expression equating a first order variation of the representation with a first order variation of the function with respect to water saturation of the formation (Sw); and iii) a third expression equating a first order variation of the representation with a first order variation of the function with respect to porosity of the formation (φ). The second and third expressions may equate derivatives of the representation with derivatives of the function.
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公开(公告)号：US10436018B2
公开(公告)日：2019-10-08
申请号：US15288092
申请日：2016-10-07
Applicant: BAKER HUGHES INCORPORATED
Inventor： Babak Kouchmeshky , Xiaochu Yao , Stanislav Forgang , Pawel J. Matuszyk , Marc S. Ramirez , Otto N. Fanini , Douglas J. Patterson , Vimal Shah
Abstract: Systems, devices, and methods for estimating a value of a downhole parameter of interest. Aspects include an apparatus for evaluating a tubular. The apparatus may include a sensor including an electromagnetic acoustic transducer (EMAT) device configured to be conveyed into the tubular. The EMAT device may include measurement circuitry comprising at least one conductive coil; and a magnet array comprising magnets arranged with a corresponding direction of magnetization of each magnet oriented according to a configuration producing a greater magnetic flux on a first side of the array than on a second side opposing the first side. The magnetic flux produced from the second side may be substantially zero. In embodiments, the configuration of magnets comprises at least a first set of permanent magnets in a linear Halbach configuration.
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公开(公告)号：US11520076B2
公开(公告)日：2022-12-06
申请号：US15081434
申请日：2016-03-25
Applicant: BAKER HUGHES INCORPORATED
Inventor： Babak Kouchmeshky , Rashid W. Khokhar
Abstract: Methods and apparatus for evaluating an earth formation for generating a numerical model comprising an expression equating a representation for the effective conductivity under Archie's law with respect to direct current with a function for the effective conductivity representative of the mixing model with respect to direct current; and solving a system of equations to obtain values for the Archie parameters including at least i) the expression; ii) a second expression equating a first order variation of the representation with a first order variation of the function with respect to water saturation of the formation (Sw); and iii) a third expression equating a first order variation of the representation with a first order variation of the function with respect to porosity of the formation (φ). The second and third expressions may equate derivatives of the representation with derivatives of the function.
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