Data high-speed transmission system and method of wireless digital seismic detector

Abstract

The invention provides a data high-speed transmission system and method of a wireless digital seismic detector. Next generation wireless WIFI (Wireless Local Area Network) and WIMAX (Worldwide Interoperability for Microwave Access) technologies, satellite communication and a wireless MESH network structure are used to construct a four-stage wireless network structure, thus the progressive high-speed transmission of acquired data of the seismic detector from an array node of a radio detector to a seismic data processing interpretation center is realized and the defect caused by a wired digital seismic detector data transmission system can be effectively overcome. The control over the transmission speed of an upstream and downstream link of the system is realized by using a key technology-orthogonal frequency division multiplexing multi-carrier technology of a wireless WIFI and WIMAX technical physical layer and using different sub channel numbers. According to the data high-speed transmission system and method disclosed by the invention, a four-stage wireless transmission network is constructed by adopting the advanced WIFI and WIMAX communication technology and the wireless MESH network structure, thus high-speed seismic acquired data transmission can be realized and an effective high-capacity and high-precision data transmission method for seismic prospecting is provided.

Description

technical field [0001] The invention belongs to the field of oil and gas exploration, in particular to a design method for a high-speed data transmission system of a wireless digital seismograph in petroleum seismic exploration. Background technique [0002] With the rapid development of the national economy, my country's demand for energy such as oil and minerals is becoming stronger and stronger. As a fast and efficient geophysical prospecting method, seismic prospecting has been widely used in the field of energy prospecting. As the key equipment for seismic exploration, more than 90% of digital seismographs rely on foreign imports, and domestic independent R&D investment is low, which seriously restricts the development of my country's seismic exploration. Although great progress has been made in the development of seismographs after years of efforts by domestic research institutions, the channel capacity of seismographs has been restricted by data transmission technolo...

AI Technical Summary

Problems solved by technology

[0005] 1) The overall weight is cumbersome: a large number of cables are required to transmit data and instructions. For a 10,000-channel instrument, the weight of the cable can reach dozens of tons, which will greatly increase the transportation cost and difficulty of moving for the seismic team’s field operations, thereby increasing the The cost of seismic survey data collection;

[0006] 2) Increased health, safety and environmental protection (referred to as: HSE) risks: laying and relocating bulky cables requires a lot of manpower, material and financial resources, which means increased HSE risks;

[0007] 3) Limitation on the number of acquisition channels: With the improvement of seismic exploration data acquisition accuracy, the number of acquisition channels required must increase, and the bulkiness of cables limits the expansion of the number of acquisition channels;

[0008] 4) Cable maintenance, overhaul and complex network structure issues: complex network structure and cable maintenance and overhaul affect the efficiency of seismic data acquisition;

[0009] 5) Limitation of transmission rate: The bandwidth of cable channel is limited, which limits the data transmission rate, increases the waiting time between seismic excitation single shots, and reduces work efficiency

For existing wireless transmission digital seismographs, large-scale wireless transceiver equipment is usually used for seismic data transmission, which is contrary to the low power consumption requirements for field exploration, and large-scale seismic exploration cannot be realized

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