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公开(公告)号：US11840924B2
公开(公告)日：2023-12-12
申请号：US17535371
申请日：2021-11-24
发明人： Jing Jin , Chung Chang , Gary Wayne Kainer
IPC分类号： E21B47/14
CPC分类号： E21B47/14
摘要： An acoustic isolator and methods to the same. The acoustic isolator may comprise a body, one or more annular chambers formed inside the body of the acoustic isolator and positioned along a longitudinal axis of the acoustic isolator, an annular groove formed on an outer surface of the body of the acoustic isolator, and a passage disposed between the one or more annular chambers and the annular groove. The method may comprise transmitting an acoustic wave from a transmitter disposed on an acoustic logging tool into a subterranean formation, receiving an acoustic signal from the subterranean formation with a receiver disposed on the acoustic logging tool, and attenuating a second acoustic wave that moves between the transmitter and the receiver and through an acoustic isolator.
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公开(公告)号：US20210018645A1
公开(公告)日：2021-01-21
申请号：US16615071
申请日：2019-04-10
摘要： A method and system for estimating a resistivity of a formation. A method for estimating a resistivity of a formation may comprise disposing a downhole tool into a borehole, wherein the downhole tool comprises a pad, an injector electrode, and a return electrode, injecting a current signal into the formation from the injector electrode, measuring a voltage signal between the injector electrode and the return electrode; and determining a formation resistivity and a formation dielectric constant from at least one of the voltage signal, at least one property of the downhole tool, and at least one property of the borehole. A system for estimating a resistivity of a formation may comprise a downhole tool. The downhole tool may comprise a pad, wherein the pad comprises an injector electrode and a return electrode. The system may further comprise a conveyance for disposing the downhole tool in a borehole and an information handling system.
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公开(公告)号：US11339646B2
公开(公告)日：2022-05-24
申请号：US16494111
申请日：2018-11-02
IPC分类号： E21B47/085 , G01V1/50
摘要： A method for identifying a shape of a borehole may comprise disposing a downhole tool into the borehole, wherein the downhole tool comprises at least one transducer, transmitting a pressure pulse from the at least one transducer, wherein the pressure pulse is reflected as an echo, recording the echo with the at least one transducer, producing data points based at least in part on the echo, each data point including a radial distance value and an azimuthal value corresponding to the radial distance value, performing a pre-selection, fitting a geometric shape to a plurality of data points within the borehole, and sorting out at least one of the plurality of data points based at least in part on the shape. A system for identifying shape of a borehole may comprise at least one transducer and an information handling system.
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公开(公告)号：US20210079786A1
公开(公告)日：2021-03-18
申请号：US16494111
申请日：2018-11-02
IPC分类号： E21B47/085 , G01V1/50
摘要： A method for identifying a shape of a borehole may comprise disposing a downhole tool into the borehole, wherein the downhole tool comprises at least one transducer, transmitting a pressure pulse from the at least one transducer, wherein the pressure pulse is reflected as an echo, recording the echo with the at least one transducer, producing data points based at least in part on the echo, each data point including a radial distance value and an azimuthal value corresponding to the radial distance value, performing a pre-selection, fitting a geometric shape to a plurality of data points within the borehole, and sorting out at least one of the plurality of data points based at least in part on the shape. A system for identifying shape of a borehole may comprise at least one transducer and an information handling system.
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公开(公告)号：US20230160302A1
公开(公告)日：2023-05-25
申请号：US17535371
申请日：2021-11-24
发明人： Jing Jin , Chung Chang , Gary Wayne Kainer
IPC分类号： E21B47/14
CPC分类号： E21B47/14
摘要： An acoustic isolator and methods to the same. The acoustic isolator may comprise a body, one or more annular chambers formed inside the body of the acoustic isolator and positioned along a longitudinal axis of the acoustic isolator, an annular groove formed on an outer surface of the body of the acoustic isolator, and a passage disposed between the one or more annular chambers and the annular groove. The method may comprise transmitting an acoustic wave from a transmitter disposed on an acoustic logging tool into a subterranean formation, receiving an acoustic signal from the subterranean formation with a receiver disposed on the acoustic logging tool, and attenuating a second acoustic wave that moves between the transmitter and the receiver and through an acoustic isolator.
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公开(公告)号：US11442188B2
公开(公告)日：2022-09-13
申请号：US16488676
申请日：2019-03-28
摘要： A method for imaging a downhole formation. The method includes combining the captured images to generate a partial image of the formation, wherein the partial image includes captured images separated by gaps representing portions of the formation not captured with sensors what were disposed downhole. The method includes locating dips in the formation within the partial image and interpolating the partial image using the located dips within the partial image.
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公开(公告)号：US11746642B2
公开(公告)日：2023-09-05
申请号：US16679002
申请日：2019-11-08
IPC分类号： E21B47/002 , G01N21/85 , E21B49/08 , G01V3/18
CPC分类号： E21B47/002 , E21B49/087 , G01N21/85 , G01V3/18
摘要： A method for identifying an operating frequency may comprise performing a frequency sweep using one or more injector electrodes disposed on a downhole tool, recording one or more measurements from the frequency sweep, identifying one or more stable frequencies from the frequency sweep, and identifying one or more operating frequencies from the one or more stable frequencies. A system for electrical isolation may comprise a downhole tool, a pad, an arm, wherein the arm is attached to the mounting bracket and the mandrel, and an information handling system connected to the pad through the first set of electronics and the second set of electronics. The downhole tool may comprise a mandrel, a chassis disposed in the mandrel, and a first set of electronics disposed in the chassis.
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公开(公告)号：US11643920B2
公开(公告)日：2023-05-09
申请号：US17649324
申请日：2022-01-28
IPC分类号： E21B47/002 , E21B47/125 , E21B47/026 , G01V3/20
CPC分类号： E21B47/0025 , E21B47/026 , E21B47/125 , G01V3/20
摘要： A method includes deploying a logging tool in a borehole formed in a subsurface formation, the logging tool having a transmitter and a receiver, wherein a condition that is present during logging comprises at least one of a shape of the borehole is non-circular and the logging tool is off-center within the borehole. The method includes emitting, by the transmitter, a signal into subsurface formation and detecting, by the receiver, a response to the signal being propagated through the subsurface formation. The method includes creating, from the response, a borehole image that includes features in the subsurface formation and correcting the features, wherein correcting the features comprises mapping points of a non-circular shape in the borehole image into a plane substantially perpendicular to an axis of the borehole.
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公开(公告)号：US11543555B2
公开(公告)日：2023-01-03
申请号：US16615071
申请日：2019-04-10
IPC分类号： G01V3/20 , G01V3/38 , G01V3/24 , G01V3/00 , G01V3/18 , E21B49/00 , E21B41/00 , E21B47/00 , G01V3/26 , G01V3/08 , E21B47/12
摘要： A method and system for estimating a resistivity of a formation. A method for estimating a resistivity of a formation may comprise disposing a downhole tool into a borehole, wherein the downhole tool comprises a pad, an injector electrode, and a return electrode, injecting a current signal into the formation from the injector electrode, measuring a voltage signal between the injector electrode and the return electrode; and determining a formation resistivity and a formation dielectric constant from at least one of the voltage signal, at least one property of the downhole tool, and at least one property of the borehole. A system for estimating a resistivity of a formation may comprise a downhole tool. The downhole tool may comprise a pad, wherein the pad comprises an injector electrode and a return electrode. The system may further comprise a conveyance for disposing the downhole tool in a borehole and an information handling system.
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公开(公告)号：US20220154572A1
公开(公告)日：2022-05-19
申请号：US17649324
申请日：2022-01-28
IPC分类号： E21B47/002 , E21B47/125 , E21B47/026 , G01V3/20
摘要： A method includes deploying a logging tool in a borehole formed in a subsurface formation, the logging tool having a transmitter and a receiver, wherein a condition that is present during logging comprises at least one of a shape of the borehole is non-circular and the logging tool is off-center within the borehole. The method includes emitting, by the transmitter, a signal into subsurface formation and detecting, by the receiver, a response to the signal being propagated through the subsurface formation. The method includes creating, from the response, a borehole image that includes features in the subsurface formation and correcting the features, wherein correcting the features comprises mapping points of a non-circular shape in the borehole image into a plane substantially perpendicular to an axis of the borehole.
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