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A Universal Adaptive High-Speed ​​Logging Teletransmission System

A self-adaptive and logging technology, applied in the field of deep exploration, can solve the problem of late start of research on logging system, and achieve the effects of alleviating the pressure of power supply and heat dissipation, low power consumption, and high data transmission rate

Active Publication Date: 2020-08-28
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Domestic research on logging system started late, and there is a certain gap with foreign technical level

Method used

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  • A Universal Adaptive High-Speed ​​Logging Teletransmission System
  • A Universal Adaptive High-Speed ​​Logging Teletransmission System
  • A Universal Adaptive High-Speed ​​Logging Teletransmission System

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Embodiment Construction

[0031] The following part will further illustrate the specific implementation manner of the present invention in conjunction with the drawings and specific work flow.

[0032] Such as figure 1 Shown is a structural block diagram of the well logging remote transmission system of the present invention.

[0033] The ground system is located on the ground, and realizes functions such as compression and modulation of command downlink and demodulation of uploaded data, mainly including ground bus data interface, digital signal processor (DSP), field programmable logic gate array (FPGA), cable driver, Receive differential amplifier, isolation transformer, analog-to-digital converter (ADC), digital-to-analog converter (DAC).

[0034]The downhole system uses the logging cable for power supply, and communicates with the downhole instrument bus system for real-time data acquisition and transmission to realize the compression and modulation of uploaded data and the demodulation of downli...

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Abstract

The invention relates to a universal self-adaptive high-speed logging telemetry system which comprises an underground system and a ground system, and the underground system and the ground system perform data transmission through a single-core or multi-core cable. The system comprises the underground system and the ground system, the underground system and the ground system perform data transmission through the single-core or multi-core cable; the ground system is located on the ground to achieve the functions of command downloading compression and modulation, demodulation of uploaded data andthe like, and the underground system is powered by a logging cable, conducts data real-time acquisition and transmission through communication with an underground instrument bus system, and achieves compression and modulation of the uploaded data and demodulation of the downloaded command. According to the invention, the problem of remote transmission of data in the logging system is solved, and self-adaptive high-reliability data transmission can be realized in different channel environments.

Description

technical field [0001] The invention relates to a universal self-adaptive high-speed logging remote transmission system, which belongs to the field of deep exploration. Background technique [0002] The downhole data transmission system in deep exploration consists of the transmission system between the downhole acquisition arrays and the logging remote transmission system between the downhole acquisition equipment and the ground control center. The performance of the logging remote transmission system determines the performance of the entire downhole data transmission system. performance. The function of the logging rumor system is mainly to transmit the downhole data collected by the logging acquisition system to the ground control center through transmission media such as mud, cable, optical fiber, etc., and at the same time transmit the instructions of the ground control center to the logging acquisition system. The transmission speed of logging remote transmission syst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/017E21B47/26E21B47/14
CPCE21B47/017E21B47/12E21B47/14E21B47/26
Inventor 赵弘韡宋克柱吴传
Owner UNIV OF SCI & TECH OF CHINA