Volume 46 Issue 6
Dec.  2018
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XU Hao, JIA Xiaojing, ZHANG Yunfeng. Application of seismic multi-attribute analysis in sand body identification of mixed sedimentation environment: A case study of Carboniferous sand group Ⅳ in the south of Sangtamu area[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(6): 163-168. DOI: 10.3969/j.issn.1001-1986.2018.06.024
Citation: XU Hao, JIA Xiaojing, ZHANG Yunfeng. Application of seismic multi-attribute analysis in sand body identification of mixed sedimentation environment: A case study of Carboniferous sand group Ⅳ in the south of Sangtamu area[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(6): 163-168. DOI: 10.3969/j.issn.1001-1986.2018.06.024
shu

Application of seismic multi-attribute analysis in sand body identification of mixed sedimentation environment: A case study of Carboniferous sand group Ⅳ in the south of Sangtamu area

  • 1. Petroleum Exploration and Production Research Institute, SINOPEC Northwest Oilfield Company, Urumqi 830011, China;

  • 2. Petroleum Exploration and Production Research Institute, SINOPEC Sorthwest Oilfield Company, Chengdu 610041, China;

  • 3. School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China;

  • 4. Southwest Petroleum University Division of Key Laboratory of Carbonate Reservoirs, SNPC, Chengdu 610500, China

Funds: 

National Basic Research Program of China(973 Program)(2012CB214800)

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  • Received Date: October 14, 2017
  • Published Date: December 24, 2018
    Graphical Abstract
    • Abstract
  • Aiming at the actual situation that the amplitude may be distorted in a mixed sedimentation environment, by using the example of Carboniferous Ⅳ sand group in the south of Sangtamu area, based on the analysis of the single well sedimentary facies, we select the useful amplitude information in sandstone to perform AVF frequency-divided inversion, combine the results with attributes, establish coupling relationship between the amplitude attribute and the sand body, establish the sand body recognition mode, and characterize the plane distribution of the sedimentary facies. The seismic reflection structure type is subdivided into four types. Based on the top surface of the Ⅳ sand group, the average crest amplitude attribute extraction was carried out 10 ms above and below, AVF frequency-divided inversion was carried out in the southwest with heavy gray matter content. There is a positive correlation between the amplitude attribute and the sand body, and the higher the sand content, the larger the amplitude. Underwater distributary channel are mainly distributed in the S1072 well area and the northwest margin of the study area. Sand flat are mainly distributed in the AT10 and S111 well areas, exhibiting a sheet. Tidal sand ridge are mainly distributed in the south, and can be used as a research area to find the key areas of lithologic traps.
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