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Three-dimensional time-shifting seismic observation method and system

A time-lapse seismic and observation system technology, applied in seismology, geophysical measurement, seismic signal processing, etc., can solve problems such as average gas output, mining duration, shortage, and drastic changes in geological environment

Pending Publication Date: 2019-07-26
GUANGZHOU MARINE GEOLOGICAL SURVEY
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Problems solved by technology

[0002] In 2017, my country achieved the first successful trial mining of combustible ice in the sea area, realizing a historic breakthrough in the development of natural gas hydrate in my country. However, from trial mining to commercial mining, it still faces the average gas output, the duration of mining, and the mining project is accompanied by drastic changes in the geological environment. A lot of research and experiment work is still needed to solve scientific, safety, and environmental problems.
my country is still in the stage of feasibility analysis and experimentation in terms of three-dimensional time-lapse seismic research, and the trial production of natural gas hydrate in my country lacks the support of this technology

Method used

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Experimental program
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Effect test

Embodiment 1

[0026] A stereoscopic time-lapse seismic observation system, such as figure 1 As shown, it includes a data collection device, a data transmission device and a data analysis device. The data collection device is arranged on the seabed, the data transmission device is connected with the data collection device, and the data analysis device is connected with the data transmission device. The data acquisition device includes a seabed seismometer, and the seabed seismometer is uniformly arranged in the reservoir area of ​​the seabed. The data transmission device includes a vertical cable and a horizontal cable, the vertical cable is connected to the horizontal cable, the horizontal cable is connected to the data analysis device, and the bottom of the vertical cable is fixed on the seabed. A plurality of hydrophones are arranged on the vertical cable, and the hydrophones are connected with the seabed seismograph. The vertical cable is connected with the buoy, and the buoy is provide...

Embodiment 2

[0030] A three-dimensional time-lapse seismic observation method, such as figure 2 As shown, it includes the following steps: Excite the seismic source at different positions in the reservoir area at least twice, and collect the vibration data of the seabed through the seabed seismograph; The transmission device transmits to the data analysis device; Carry out forward modeling simulation according to the obtained data.

[0031] Collecting data for forward modeling can effectively explore seabed reservoirs.

Embodiment 3

[0033] A three-dimensional time-lapse seismic observation system, including a data acquisition device, a data transmission device and a data analysis device, the data acquisition device is arranged on the seabed, the data transmission device is connected with the data acquisition device, and the data analysis device Connect with data transmission device.

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Abstract

The invention relates to the field of seabed natural gas exploration and provides a three-dimensional time-shifting seismic observation method and system. The three-dimensional time-shifting seismic observation method and system are used for solving the exploration problem of seabed natural gas. The three-dimensional time-shifting seismic observation system comprises a data collecting device, a data transmission device and a data analysis device, the data collecting device is arranged at the seabed, the data transmission device is connected with the data collecting device, and the data analysis device is connected with the data transmission device. The collecting device is arranged at the seabed, thus the seismic data can be effectively collected, and sufficient support is provided for reservoir analysis.

Description

technical field [0001] The invention relates to the field of seabed natural gas exploration, in particular to a three-dimensional time-lapse seismic observation system and method. Background technique [0002] In 2017, my country achieved the first successful test mining of combustible ice in the sea area, realizing a historic breakthrough in the development of natural gas hydrate in my country. However, from trial mining to commercial mining, it still faces the average gas output, the duration of mining, and the mining project is accompanied by drastic changes in the geological environment. A lot of research and experiment work is still needed to solve scientific, safety, and environmental problems. my country is still in the stage of feasibility analysis and experimentation in the field of three-dimensional time-lapse seismic research, and the trial production of natural gas hydrate in my country lacks the support of this technology. [0003] The process of monitoring the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/38G01V1/28
CPCG01V1/28G01V1/3808G01V1/3817G01V2210/48G01V2210/512
Inventor 王伟巍董广黄建宇谢城亮
Owner GUANGZHOU MARINE GEOLOGICAL SURVEY
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