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YANG Guangming, JIN Xueliang, ZHANG Xianxu, ZHI Min, SHAN Rui. Application of broadband and wide azimuth processing technology in full digital high density seismic exploration in Huaibei mining area[J]. COAL GEOLOGY & EXPLORATION, 2020, 48(6): 55-63. DOI: 10.3969/j.issn.1001-1986.2020.06.008
Citation: YANG Guangming, JIN Xueliang, ZHANG Xianxu, ZHI Min, SHAN Rui. Application of broadband and wide azimuth processing technology in full digital high density seismic exploration in Huaibei mining area[J]. COAL GEOLOGY & EXPLORATION, 2020, 48(6): 55-63. DOI: 10.3969/j.issn.1001-1986.2020.06.008
shu

Application of broadband and wide azimuth processing technology in full digital high density seismic exploration in Huaibei mining area

  • 1. Xi'an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi'an 710077, China;

  • 2. Huaibei Mining(Group)Co., Ltd., Huaibei 235000, China

Funds: 

Research Project of Huaibei Mining(Group) Co.，Ltd. (2019-45，2019-46)；National Key R&D Program of China (2018YFC0807804)

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  • Received Date: October 24, 2020
  • Revised Date: November 07, 2020
  • Published Date: December 24, 2020
    Graphical Abstract
    • Abstract
  • Compared with conventional 3D seismic exploration, full-digital high density seismic exploration adopts high horizontal and vertical ratio, wide azimuth observation system and single-point digital detectors.Wide azimuth seismic exploration is beneficial to high and steep structure and complex fault block imaging, but there are anisotropy problems, while single-point digital geophone seismic signal has wide frequency band, good amplitude preservation and strong noise. In order to give full play to the advantages of the full digital high-density seismic data and overcome its disadvantages, broadband and wide azimuth processing technology must be applied to high density 3D seismic data processing in coal mining districts to improve the data processing effect. Based on the full digital high density seismic data of Huaibei mining area, this paper studies the broadband and wide-azimuth processing technology of the full digital high-density seismic data of coal mining districts, focusing on pre-stack amplitude preservation denoising, amplitude compensation, OVT processing technology and omni-directional angular migration imaging technology according to the complex geological structure characteristics of Huaibei mining area. The actual digital high density seismic data processing in Huaibei mining area shows that the image denoising in almost no damage under the premise of effective signals to realize the effective suppression of noise, restore the seismic amplitude compensation signal of high frequency energy loss, wide azimuth processing not only eliminates the anisotropy effect to improve the imaging effect, but also obtains rich prestack data. Broadband azimuth processing technology is a necessary means for processing full digital high density seismic data. Its processing results are wider in frequency band than conventional processing results, better in imaging complex structures, higher in resolution, and able to achieve fine imaging of seismic data of complex geological conditions in coal mining districts.
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