Cable Attenuation

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Rito Mijarez - One of the best experts on this subject based on the ideXlab platform.

  • Signal processing algorithm for thermal drift compensation in high-temperature down-hole instrumentation systems
    Transactions of the Institute of Measurement and Control, 2016
    Co-Authors: Rito Mijarez, David Pascacio, Ricardo Guevara, Joaquin Hector Rodriguez Rodriguez
    Abstract:

    Down-hole oil and gas industry requirements for measuring thermodynamic and geophysical parameters, for instance pressure, temperature, vibration and multiphase flow, are challenging. Accomplishing these necessities requires a complete signal communications chain of high-performance components and effective signal processing communication techniques to provide system reliability. Nevertheless, noise interference, Cable Attenuation and thermal drift of the front-end passive electronic elements can lead to poor signal-to-noise ratio (SNR) and possibly loss of the communication link. This paper describes a signal processing algorithm implemented in a bidirectional communication system that exchanges data from a down-hole high pressure and high-temperature (HPHT) measurement tool to the surface installation. The communication channel is a multi-conductor coaxial logging Cable also used as a power supply transmission line. The instrumentation system consists of a proprietary down-hole measurement tool, compose...

  • Communication system for down-hole measurement tools based on real-time SNR characterization in coaxial Cable used as communication channel
    2013
    Co-Authors: Rito Mijarez, David Pascacio, Ricardo Guevara, Olimpia Pacheco, Carlos Tello, Joaquín Rodríguez
    Abstract:

    Down-hole oil and gas industries are important users of high temperature electronics. In these applications the operating temperature is function of the underground depth of the wells. Oil reservoirs in Mexico are located at mean depths of 6,000 m and the typical geothermal gradient is 25°C/km, however in some areas it is greater. Consequently, the requirements for measuring thermodynamic and geophysical parameters, for instance pressure, temperature, vibration and multiphase flow, are a challenging task. Accomplishing these necessities requires a complete signal communications chain of high-performance components and effective communication techniques to provide system reliability. Nevertheless, noise interference, Cable Attenuation and thermal drift of the front-end passive electronic elements can lead to poor signal-to-noise ratio (SNR) and possibly loss of the communication link. This paper describes a bidirectional communication system that exchanges data from a down-hole high pressure and high tempe...

  • Communication system for down-hole measurement tools based on real-time SNR characterization in coaxial Cable used as communication channel
    Additional Conferences (Device Packaging HiTEC HiTEN and CICMT), 2013
    Co-Authors: Rito Mijarez, David Pascacio, Ricardo Guevara, Olimpia Pacheco, Carlos Tello, Joaquín Rodríguez
    Abstract:

    Down-hole oil and gas industries are important users of high temperature electronics. In these applications the operating temperature is function of the underground depth of the wells. Oil reservoirs in Mexico are located at mean depths of 6,000 m and the typical geothermal gradient is 25°C/km, however in some areas it is greater. Consequently, the requirements for measuring thermodynamic and geophysical parameters, for instance pressure, temperature, vibration and multiphase flow, are a challenging task. Accomplishing these necessities requires a complete signal communications chain of high-performance components and effective communication techniques to provide system reliability. Nevertheless, noise interference, Cable Attenuation and thermal drift of the front-end passive electronic elements can lead to poor signal-to-noise ratio (SNR) and possibly loss of the communication link. This paper describes a bidirectional communication system that exchanges data from a down-hole high pressure and high temperature (HP/HT) measurement tool to the surface installation. The communication channel is a multi-conductor coaxial logging Cable used also as a power supply transmission line. The system consists of a proprietary down-hole measurement tool, composed of a HP/HT sensor and a high temperature DSP-based electronic device; and located in the surface installation, a data acquisition equipment. The system employs a communication algorithm, based on the SNR characterization of the whole communication chain, which determines in real-time the optimal carrier frequency that is automatically implemented in the selected modulation/demodulation technique. The obtained laboratory tests results of the down-hole tool, using changes in temperature from 25 °C – 185 °C, provide a firm basis for testing and evaluating the system in the field.

  • Communications System using a 1K22Monoconductor Cable for Down-hole Measurement Tools
    2012
    Co-Authors: Rito Mijarez, David Pascacio, Ricardo Guevara, Joaquin Hector Rodriguez Rodriguez, Olimpia Pacheco
    Abstract:

    Abastract Progressively deeper and hotter oil wells have driven design modification that enhances the performance in sensors and downhole electronic instruments. Oil reservoirs in Mexico are located at mean depths of 6,000 m; as a consequence, the requirements for measuring thermodynamic and geophysical parameters are challenging. This paper describes a bidirectional communication system that exchanges data from a down-hole high pressure and high temperature (HP/HT) measurement tool to the surface installation. The communication medium is a 7 km monoconductor 1K22 logging Cable used also as a power supply transmission line. The system consists of a proprietary downhole measurement tool, composed of a HT/HP sensor and a high temperature DSP-based electronic device, and a data acquisition equipment located in the surface installation. The system employs a communication algorithm that automatically switches the modulation technique and changes the carrier frequency to avoid issues derived from noise interference, Cable Attenuation and thermal drift of the front end passive elements. The laboratory tests results provide a firm basis for testing and evaluating the system in the field.

Joaquín Rodríguez - One of the best experts on this subject based on the ideXlab platform.

  • Communication system for down-hole measurement tools based on real-time SNR characterization in coaxial Cable used as communication channel
    2013
    Co-Authors: Rito Mijarez, David Pascacio, Ricardo Guevara, Olimpia Pacheco, Carlos Tello, Joaquín Rodríguez
    Abstract:

    Down-hole oil and gas industries are important users of high temperature electronics. In these applications the operating temperature is function of the underground depth of the wells. Oil reservoirs in Mexico are located at mean depths of 6,000 m and the typical geothermal gradient is 25°C/km, however in some areas it is greater. Consequently, the requirements for measuring thermodynamic and geophysical parameters, for instance pressure, temperature, vibration and multiphase flow, are a challenging task. Accomplishing these necessities requires a complete signal communications chain of high-performance components and effective communication techniques to provide system reliability. Nevertheless, noise interference, Cable Attenuation and thermal drift of the front-end passive electronic elements can lead to poor signal-to-noise ratio (SNR) and possibly loss of the communication link. This paper describes a bidirectional communication system that exchanges data from a down-hole high pressure and high tempe...

  • Communication system for down-hole measurement tools based on real-time SNR characterization in coaxial Cable used as communication channel
    Additional Conferences (Device Packaging HiTEC HiTEN and CICMT), 2013
    Co-Authors: Rito Mijarez, David Pascacio, Ricardo Guevara, Olimpia Pacheco, Carlos Tello, Joaquín Rodríguez
    Abstract:

    Down-hole oil and gas industries are important users of high temperature electronics. In these applications the operating temperature is function of the underground depth of the wells. Oil reservoirs in Mexico are located at mean depths of 6,000 m and the typical geothermal gradient is 25°C/km, however in some areas it is greater. Consequently, the requirements for measuring thermodynamic and geophysical parameters, for instance pressure, temperature, vibration and multiphase flow, are a challenging task. Accomplishing these necessities requires a complete signal communications chain of high-performance components and effective communication techniques to provide system reliability. Nevertheless, noise interference, Cable Attenuation and thermal drift of the front-end passive electronic elements can lead to poor signal-to-noise ratio (SNR) and possibly loss of the communication link. This paper describes a bidirectional communication system that exchanges data from a down-hole high pressure and high temperature (HP/HT) measurement tool to the surface installation. The communication channel is a multi-conductor coaxial logging Cable used also as a power supply transmission line. The system consists of a proprietary down-hole measurement tool, composed of a HP/HT sensor and a high temperature DSP-based electronic device; and located in the surface installation, a data acquisition equipment. The system employs a communication algorithm, based on the SNR characterization of the whole communication chain, which determines in real-time the optimal carrier frequency that is automatically implemented in the selected modulation/demodulation technique. The obtained laboratory tests results of the down-hole tool, using changes in temperature from 25 °C – 185 °C, provide a firm basis for testing and evaluating the system in the field.

Steven A. Boggs - One of the best experts on this subject based on the ideXlab platform.

  • Computation of PD calibration reflectograms in shielded power Cable
    IEEE Transactions on Dielectrics and Electrical Insulation, 2008
    Co-Authors: N. Oussalah, Steven A. Boggs
    Abstract:

    The basis for computing PD calibration reflectograms in shielded power Cable is presented. The computed reflectograms include the effects of Cable Attenuation, initial pulse width, Cable length, and PD detection bandwidth. The authors have developed a program based on the algorithms presented in this paper which they are making freely available to the technical community.

  • Partial discharge pulse propagation in shielded power Cable and implications for detection sensitivity
    IEEE Electrical Insulation Magazine, 2007
    Co-Authors: N. Oussalah, Youcef Zebboudj, Steven A. Boggs
    Abstract:

    Boggs and Stone (1982) defined the fundamental limits to the electrical detection of corona and partial discharge (PD), i.e., wideband detection of a PD-induced pulse in the presence of thermal noise. This paper treated the effect of frequency-dependent Attenuation in shielded power Cable in that context. However, most of the plots in that paper were the result of numerical computations. In the same year, Stone and Boggs set out a theory for high-frequency Attenuation of shielded power Cable. They showed good agreement between Attenuation predicted from measured material properties and measured, high-frequency Attenuation of shielded power Cable. Since 1982, measurements of high-frequency Cable Attenuation have been reported by a number of authors for a variety of Cables. In addition, software tools have become available that facilitate an analytic solution for the parameters of interest. This article summarizes the theory for PD propagation in shielded power Cable for both symmetric (Gaussian) and asymmetric PD-pulse waveforms, based on the assumption that the Attenuation constant (dB/m or Nepers/m) of the Cable is proportional to frequency. This appears to be the most complete possible analytic exposition of PD Attenuation in shielded-power Cable, which has obvious applications to field PD measurements of such Cable.

Ricardo Guevara - One of the best experts on this subject based on the ideXlab platform.

  • Signal processing algorithm for thermal drift compensation in high-temperature down-hole instrumentation systems
    Transactions of the Institute of Measurement and Control, 2016
    Co-Authors: Rito Mijarez, David Pascacio, Ricardo Guevara, Joaquin Hector Rodriguez Rodriguez
    Abstract:

    Down-hole oil and gas industry requirements for measuring thermodynamic and geophysical parameters, for instance pressure, temperature, vibration and multiphase flow, are challenging. Accomplishing these necessities requires a complete signal communications chain of high-performance components and effective signal processing communication techniques to provide system reliability. Nevertheless, noise interference, Cable Attenuation and thermal drift of the front-end passive electronic elements can lead to poor signal-to-noise ratio (SNR) and possibly loss of the communication link. This paper describes a signal processing algorithm implemented in a bidirectional communication system that exchanges data from a down-hole high pressure and high-temperature (HPHT) measurement tool to the surface installation. The communication channel is a multi-conductor coaxial logging Cable also used as a power supply transmission line. The instrumentation system consists of a proprietary down-hole measurement tool, compose...

  • Communication system for down-hole measurement tools based on real-time SNR characterization in coaxial Cable used as communication channel
    2013
    Co-Authors: Rito Mijarez, David Pascacio, Ricardo Guevara, Olimpia Pacheco, Carlos Tello, Joaquín Rodríguez
    Abstract:

    Down-hole oil and gas industries are important users of high temperature electronics. In these applications the operating temperature is function of the underground depth of the wells. Oil reservoirs in Mexico are located at mean depths of 6,000 m and the typical geothermal gradient is 25°C/km, however in some areas it is greater. Consequently, the requirements for measuring thermodynamic and geophysical parameters, for instance pressure, temperature, vibration and multiphase flow, are a challenging task. Accomplishing these necessities requires a complete signal communications chain of high-performance components and effective communication techniques to provide system reliability. Nevertheless, noise interference, Cable Attenuation and thermal drift of the front-end passive electronic elements can lead to poor signal-to-noise ratio (SNR) and possibly loss of the communication link. This paper describes a bidirectional communication system that exchanges data from a down-hole high pressure and high tempe...

  • Communication system for down-hole measurement tools based on real-time SNR characterization in coaxial Cable used as communication channel
    Additional Conferences (Device Packaging HiTEC HiTEN and CICMT), 2013
    Co-Authors: Rito Mijarez, David Pascacio, Ricardo Guevara, Olimpia Pacheco, Carlos Tello, Joaquín Rodríguez
    Abstract:

    Down-hole oil and gas industries are important users of high temperature electronics. In these applications the operating temperature is function of the underground depth of the wells. Oil reservoirs in Mexico are located at mean depths of 6,000 m and the typical geothermal gradient is 25°C/km, however in some areas it is greater. Consequently, the requirements for measuring thermodynamic and geophysical parameters, for instance pressure, temperature, vibration and multiphase flow, are a challenging task. Accomplishing these necessities requires a complete signal communications chain of high-performance components and effective communication techniques to provide system reliability. Nevertheless, noise interference, Cable Attenuation and thermal drift of the front-end passive electronic elements can lead to poor signal-to-noise ratio (SNR) and possibly loss of the communication link. This paper describes a bidirectional communication system that exchanges data from a down-hole high pressure and high temperature (HP/HT) measurement tool to the surface installation. The communication channel is a multi-conductor coaxial logging Cable used also as a power supply transmission line. The system consists of a proprietary down-hole measurement tool, composed of a HP/HT sensor and a high temperature DSP-based electronic device; and located in the surface installation, a data acquisition equipment. The system employs a communication algorithm, based on the SNR characterization of the whole communication chain, which determines in real-time the optimal carrier frequency that is automatically implemented in the selected modulation/demodulation technique. The obtained laboratory tests results of the down-hole tool, using changes in temperature from 25 °C – 185 °C, provide a firm basis for testing and evaluating the system in the field.

  • Communications System using a 1K22Monoconductor Cable for Down-hole Measurement Tools
    2012
    Co-Authors: Rito Mijarez, David Pascacio, Ricardo Guevara, Joaquin Hector Rodriguez Rodriguez, Olimpia Pacheco
    Abstract:

    Abastract Progressively deeper and hotter oil wells have driven design modification that enhances the performance in sensors and downhole electronic instruments. Oil reservoirs in Mexico are located at mean depths of 6,000 m; as a consequence, the requirements for measuring thermodynamic and geophysical parameters are challenging. This paper describes a bidirectional communication system that exchanges data from a down-hole high pressure and high temperature (HP/HT) measurement tool to the surface installation. The communication medium is a 7 km monoconductor 1K22 logging Cable used also as a power supply transmission line. The system consists of a proprietary downhole measurement tool, composed of a HT/HP sensor and a high temperature DSP-based electronic device, and a data acquisition equipment located in the surface installation. The system employs a communication algorithm that automatically switches the modulation technique and changes the carrier frequency to avoid issues derived from noise interference, Cable Attenuation and thermal drift of the front end passive elements. The laboratory tests results provide a firm basis for testing and evaluating the system in the field.

David Pascacio - One of the best experts on this subject based on the ideXlab platform.

  • Signal processing algorithm for thermal drift compensation in high-temperature down-hole instrumentation systems
    Transactions of the Institute of Measurement and Control, 2016
    Co-Authors: Rito Mijarez, David Pascacio, Ricardo Guevara, Joaquin Hector Rodriguez Rodriguez
    Abstract:

    Down-hole oil and gas industry requirements for measuring thermodynamic and geophysical parameters, for instance pressure, temperature, vibration and multiphase flow, are challenging. Accomplishing these necessities requires a complete signal communications chain of high-performance components and effective signal processing communication techniques to provide system reliability. Nevertheless, noise interference, Cable Attenuation and thermal drift of the front-end passive electronic elements can lead to poor signal-to-noise ratio (SNR) and possibly loss of the communication link. This paper describes a signal processing algorithm implemented in a bidirectional communication system that exchanges data from a down-hole high pressure and high-temperature (HPHT) measurement tool to the surface installation. The communication channel is a multi-conductor coaxial logging Cable also used as a power supply transmission line. The instrumentation system consists of a proprietary down-hole measurement tool, compose...

  • Communication system for down-hole measurement tools based on real-time SNR characterization in coaxial Cable used as communication channel
    2013
    Co-Authors: Rito Mijarez, David Pascacio, Ricardo Guevara, Olimpia Pacheco, Carlos Tello, Joaquín Rodríguez
    Abstract:

    Down-hole oil and gas industries are important users of high temperature electronics. In these applications the operating temperature is function of the underground depth of the wells. Oil reservoirs in Mexico are located at mean depths of 6,000 m and the typical geothermal gradient is 25°C/km, however in some areas it is greater. Consequently, the requirements for measuring thermodynamic and geophysical parameters, for instance pressure, temperature, vibration and multiphase flow, are a challenging task. Accomplishing these necessities requires a complete signal communications chain of high-performance components and effective communication techniques to provide system reliability. Nevertheless, noise interference, Cable Attenuation and thermal drift of the front-end passive electronic elements can lead to poor signal-to-noise ratio (SNR) and possibly loss of the communication link. This paper describes a bidirectional communication system that exchanges data from a down-hole high pressure and high tempe...

  • Communication system for down-hole measurement tools based on real-time SNR characterization in coaxial Cable used as communication channel
    Additional Conferences (Device Packaging HiTEC HiTEN and CICMT), 2013
    Co-Authors: Rito Mijarez, David Pascacio, Ricardo Guevara, Olimpia Pacheco, Carlos Tello, Joaquín Rodríguez
    Abstract:

    Down-hole oil and gas industries are important users of high temperature electronics. In these applications the operating temperature is function of the underground depth of the wells. Oil reservoirs in Mexico are located at mean depths of 6,000 m and the typical geothermal gradient is 25°C/km, however in some areas it is greater. Consequently, the requirements for measuring thermodynamic and geophysical parameters, for instance pressure, temperature, vibration and multiphase flow, are a challenging task. Accomplishing these necessities requires a complete signal communications chain of high-performance components and effective communication techniques to provide system reliability. Nevertheless, noise interference, Cable Attenuation and thermal drift of the front-end passive electronic elements can lead to poor signal-to-noise ratio (SNR) and possibly loss of the communication link. This paper describes a bidirectional communication system that exchanges data from a down-hole high pressure and high temperature (HP/HT) measurement tool to the surface installation. The communication channel is a multi-conductor coaxial logging Cable used also as a power supply transmission line. The system consists of a proprietary down-hole measurement tool, composed of a HP/HT sensor and a high temperature DSP-based electronic device; and located in the surface installation, a data acquisition equipment. The system employs a communication algorithm, based on the SNR characterization of the whole communication chain, which determines in real-time the optimal carrier frequency that is automatically implemented in the selected modulation/demodulation technique. The obtained laboratory tests results of the down-hole tool, using changes in temperature from 25 °C – 185 °C, provide a firm basis for testing and evaluating the system in the field.

  • Communications System using a 1K22Monoconductor Cable for Down-hole Measurement Tools
    2012
    Co-Authors: Rito Mijarez, David Pascacio, Ricardo Guevara, Joaquin Hector Rodriguez Rodriguez, Olimpia Pacheco
    Abstract:

    Abastract Progressively deeper and hotter oil wells have driven design modification that enhances the performance in sensors and downhole electronic instruments. Oil reservoirs in Mexico are located at mean depths of 6,000 m; as a consequence, the requirements for measuring thermodynamic and geophysical parameters are challenging. This paper describes a bidirectional communication system that exchanges data from a down-hole high pressure and high temperature (HP/HT) measurement tool to the surface installation. The communication medium is a 7 km monoconductor 1K22 logging Cable used also as a power supply transmission line. The system consists of a proprietary downhole measurement tool, composed of a HT/HP sensor and a high temperature DSP-based electronic device, and a data acquisition equipment located in the surface installation. The system employs a communication algorithm that automatically switches the modulation technique and changes the carrier frequency to avoid issues derived from noise interference, Cable Attenuation and thermal drift of the front end passive elements. The laboratory tests results provide a firm basis for testing and evaluating the system in the field.