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

A transmission system and seismometer technology, applied in the field of oil and gas exploration, can solve the problems of reduced work efficiency, limited number of acquisition channels, and overall heavy weight. The effect of restriction

Inactive Publication Date: 2012-01-04
SOUTHWEST PETROLEUM UNIV
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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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Embodiment Construction

[0039] The following is a further detailed description of the wireless digital seismograph data high-speed transmission system in conjunction with the accompanying drawings and implementation examples:

[0040] figure 1 is the layout diagram of the detector array nodes. 13 in the figure represents the survey line, the arrows indicate the direction of the survey line, and the array nodes of the detectors are arranged at equal intervals along the survey line direction. Taking the six measuring lines in the figure as an example, 60 detector array nodes (60 channels) are arranged at equal intervals on each measuring line, the distance between adjacent measuring lines is 60m, and the distance between each detector array node is 30m. That is, the distance between the detector array nodes 101 and 201 on different survey lines is 60 m, and the distance between the detector array nodes 102 and 103 on the same survey line is 30 m.

[0041] figure 2 It is a four-level wireless netwo...

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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...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W84/18G08C17/02
Inventor 罗仁泽戈勇华黄元溢党煜蒲
Owner SOUTHWEST PETROLEUM UNIV
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