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公开(公告)号：US11579135B2
公开(公告)日：2023-02-14
申请号：US16652272
申请日：2019-05-14
发明人： Ilker R. Capoglu , Baris Guner
摘要： A downhole tool may comprise a mandrel, wherein the mandrel is a structural support for the downhole tool; one or more arms, wherein the one or more arms are attached to the mandrel; and a pad, wherein the pad is connected to the one or more arms. The pad may comprise a material, where the material expands or contracts from an external electromagnetic field; an insulator, wherein the insulator is connected at a first end to the material; and an electrode, wherein the electrode is connected to the insulator. A method may comprise applying a time varying biasing voltage to a material, wherein the material exhibits mechanical strain; taking a first measurement and a second measurement with at least one operating frequency with an electrode; calculating a mud property based at least in part on the first measurement and the second measurement; and applying a mud effect removal algorithm to the mud property.
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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：US20220107441A1
公开(公告)日：2022-04-07
申请号：US17555240
申请日：2021-12-17
IPC分类号： G01V3/38 , E21B47/002 , G01V3/20
摘要： A method and system for resistivity imaging. A method may comprise disposing a downhole tool into a borehole, applying a voltage difference between the array of injector electrodes, constructing a first set of formation images for each of the plurality of frequencies, applying a mud effect removal algorithm to produce a second set of formation images for each of the plurality of frequencies, applying a dielectric correction algorithm to each of the plurality of frequencies to produce a third set of formation images for each of the plurality of frequencies, and combining the first set of formation images, the second set of formation images, and the third set of formation images to obtain a blended image. A system for resistivity imaging may comprise a downhole tool. The downhole tool may comprises a pad, an array of injector electrodes, and one or more return electrodes.
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公开(公告)号：US20210405016A1
公开(公告)日：2021-12-30
申请号：US16652272
申请日：2019-05-14
发明人： Ilker R. Capoglu , Baris Guner
IPC分类号： G01N33/28 , G01V3/20 , E21B47/002 , G01V3/38
摘要： A downhole tool may comprise a mandrel, wherein the mandrel is a structural support for the downhole tool; one or more arms, wherein the one or more arms are attached to the mandrel; and a pad, wherein the pad is connected to the one or more arms. The pad may comprise a material, where the material expands or contracts from an external electromagnetic field; an insulator, wherein the insulator is connected at a first end to the material; and an electrode, wherein the electrode is connected to the insulator. A method may comprise applying a time varying biasing voltage to a material, wherein the material exhibits mechanical strain; taking a first measurement and a second measurement with at least one operating frequency with an electrode; calculating a mud property based at least in part on the first measurement and the second measurement; and applying a mud effect removal algorithm to the mud property.
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公开(公告)号：US20210304386A1
公开(公告)日：2021-09-30
申请号：US16835115
申请日：2020-03-30
发明人： Baris Guner , Ahmed Elsayed Fouda
摘要： A method for identifying one or more imaging properties. The method may comprise identifying one or more candidate mud constants, taking one or more measurements from a borehole with a downhole tool to form an image log, inputting into a machine learning model one or more inputs such that the machine learning model outputs one or more estimated imaging properties, and inputting into a forward model at least the one or more estimated imaging properties and the one or more candidate mud constants such that the forward model outputs one or more reconstructed tool responses. The method may further comprise computing a misfit between the one or more reconstructed tool responses and the one or more measurements, picking a mud candidate from the one or more candidate mud constants based at least in part on the misfit, and producing one or more imaging properties from the picked mud candidate.
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公开(公告)号：US10955579B2
公开(公告)日：2021-03-23
申请号：US15552234
申请日：2016-02-10
发明人： Burkay Donderici , Baris Guner
IPC分类号： G01V3/20 , G01V3/26 , G01V3/38 , E21B47/085
摘要： Apparatus, systems, and methods may operate to detect anomalous formation resistivity values within measured formation resistivity data, based on mud resistivity associated with a borehole in a geological formation, the measured formation resistivity data comprising the anomalous formation resistivity values and acceptable formation resistivity values. Additional activity may include transforming the anomalous formation resistivity values into corrected formation resistivity values, inverting the corrected formation resistivity values and the acceptable formation resistivity values to provide true resistivity values for a geological formation, and operating a controlled device according to the true resistivity values for the geological formation. Additional apparatus, systems, and methods are disclosed.
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公开(公告)号：US20210048553A1
公开(公告)日：2021-02-18
申请号：US16603642
申请日：2018-11-13
IPC分类号： G01V3/38 , G01V3/26 , E21B47/002
摘要： A method and system for estimating a mud angle. A method may comprise disposing a downhole tool into a borehole, energizing a button array, transmitting a current from the electrode into a formation, recording the current from the formation with a return electrode to obtain a plurality of measurements, identifying at least one low resistivity zone from the plurality of measurements to produce a measurement set, inverting the measurement set to find a mud angle vector, removing the mud angle vector from the measurement set to obtain a corrected measurement, and obtaining an electrical image using the corrected measurement. A system may comprise a downhole tool, a conveyance, and an information handling system. The downhole tool may further comprise at least one electrode and at least one return electrode.
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公开(公告)号：US10782438B2
公开(公告)日：2020-09-22
申请号：US16088601
申请日：2016-05-03
发明人： Baris Guner , Burkay Donderici
摘要： Technology for obtaining formation parameters of a geological formation includes measuring a resistivity image of the geological formation. The measured resistivity image is compared to a modelled resistivity image where the modelled resistivity image is generated based on estimated formation parameters. A cost function is calculated based on the measure resistivity image and the modelled resistivity image. The estimated formation parameters are adjusted based on minimizing the cost function in order to generate a set of final formation parameters that represents a modelled resistivity image having a smallest cost function.
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公开(公告)号：US10508534B2
公开(公告)日：2019-12-17
申请号：US15533520
申请日：2016-09-28
发明人： Baris Guner , Burkay Donderici , Ilker R. Capoglu
IPC分类号： G01V1/40 , E21B47/022 , E21B47/09 , E21B47/08 , E21B43/24
摘要： Planning and real time optimization of one or more modules of a downhole tool provide efficient and cost-effective deployment of a measurement system, for example, for a ranging tool. Considerations of the environment and type of operation may be considered prior to the deployment of a downhole tool such that the downhole tool comprises modules that may be optimized. Certain modules may be activated for specific operations without having to extract the downhole tool as all modules necessary to perform the specific tasks for a given operation are included prior to deployment of the downhole tool. The one or more modules may be optimized in real time based, for example, on received measurements or previous survey results. The modularity of the downhole tool allows for flexibility in fine tuning the tool according to a varying formation environment and other parameters.
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公开(公告)号：US10227864B2
公开(公告)日：2019-03-12
申请号：US15036408
申请日：2013-12-12
发明人： Burkay Donderici , Baris Guner
IPC分类号： E21B47/0228 , E21B47/024 , E21B47/09 , E21B47/12 , E21B7/04 , E21B47/022
摘要： An example method for downhole operations using a magnetic monopole includes positioning at least one of a transmitter and a receiver within a first borehole. At least one of the transmitter and the receiver may be a magnetic monopole. The transmitter may generate a first magnetic field, and the receiver may measure a signal corresponding to the first magnetic field. A control unit communicably coupled to the receiver may determine at least one characteristic using the received signal.
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