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公开(公告)号：US10185052B2
公开(公告)日：2019-01-22
申请号：US15383978
申请日：2016-12-19
Applicant: BAKER HUGHES INCORPORATED
Inventor： Feyzi Inanc , Douglas Patterson , Elizaveta Onegova , Rocco DiFoggio , Otto Fanini
Abstract: Methods, systems, devices, and products for estimating at least one parameter of interest of a volume of interest of an earth formation using nuclear radiation based measurements. Logging tools include a limited aperture collimated radiation beam source, detectors, and at least one processor configured to take measurements. The source is configured to emit a beam of radiation radially from the logging tool into an elongated volume of interest outside the wellbore such that the beam penetrates a plurality of zones of the volume of interest. Each zone represents a range of radial depths corresponding to a respective infrastructure component associated with the wellbore, such as nested tubulars. Each detector has a unique angle of detection and is configured to generate measurement information in response to spatially coherent backscattered gamma rays. Each detector is associated with scattering events at one of the plurality of zones.
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公开(公告)号：US10365402B2
公开(公告)日：2019-07-30
申请号：US15607206
申请日：2017-05-26
Applicant: Baker Hughes Incorporated
Inventor： Otto Fanini , Raman Viswanathan , Jorge Maxit , Harold Andrade
Abstract: A method and system for transmitting data through a transmission medium between surface and subsurface transceivers. A surface transceiver and a subsurface transceiver are each configured to selectively transmit over a plurality of transmission channels, each transmission channel having a range of frequencies within the total frequency bandwidth. The surface transceiver is adapted to initialize a channel to determine at least one parameter affecting the current maximum data rate for transmission of information through the channel using a given transmission methodology. At least one of the channels uses carrierless phase/amplitude (CAP) modulation for its transmission methodology. The surface transceiver and the subsurface transceiver adapt to cooperatively periodically test a channel by transmission of a calibration signal from the subsurface transceiver to the surface transceiver. Control circuitry compares the received calibration signal with the calibration signal, responding to the result of the comparison to adjust at least one parameter as necessary to achieve an optimum rate of data transmission through said channel.
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公开(公告)号：US10520641B2
公开(公告)日：2019-12-31
申请号：US15599214
申请日：2017-05-18
Applicant: BAKER HUGHES INCORPORATED
Inventor： Feyzi Inanc , Toyli Anniyev , David M. Chace , Randy Gold , Otto Fanini , Sandeep Gade , Mohamed Daoud
Abstract: Estimating parameters of interest of a formation, including density, porosity, and fluid saturation. Methods relate to gamma ray energy spectra calibration for a radiation detector including generating a calibration radiation spectrum using measurements of radiation with the detector in a time interval wherein the radiation comprises predominantly gamma rays emitted by decay of radionuclides produced by neutron activation reactions resulting from neutron irradiation, the time interval following a prior time interval corresponding to thermal neutrons produced from the irradiation; making at least one other radiation measurement with the detector outside the time interval; and producing a calibrated radiation measurement from the at least one other radiation measurement using the calibration radiation spectrum. The measurements may be taken in the time interval by conveying the radiation detector in the borehole at high speed and using a background gate of the detector.
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公开(公告)号：US20170261641A1
公开(公告)日：2017-09-14
申请号：US15607206
申请日：2017-05-26
Applicant: Baker Hughes Incorporated
Inventor： Otto Fanini , Raman Viswanathan , Jorge Maxit , Harold Andrade
CPC classification number: G01V11/002 , E21B47/12 , G06F17/14
Abstract: A method and system for transmitting data through a transmission medium between surface and subsurface transceivers. A surface transceiver and a subsurface transceiver are each configured to selectively transmit over a plurality of transmission channels, each transmission channel having a range of frequencies within the total frequency bandwidth. The surface transceiver is adapted to initialize a channel to determine at least one parameter affecting the current maximum data rate for transmission of information through the channel using a given transmission methodology. At least one of the channels uses carrierless phase/amplitude (CAP) modulation for its transmission methodology. The surface transceiver and the subsurface transceiver adapt to cooperatively periodically test a channel by transmission of a calibration signal from the subsurface transceiver to the surface transceiver. Control circuitry compares the received calibration signal with the calibration signal, responding to the result of the comparison to adjust at least one parameter as necessary to achieve an optimum rate of data transmission through said channel.
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