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Research on seismic survey design for doubly complex areas

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Abstract

The complex geological conditions in doubly complex areas tend to result in difficult surface survey operations and poor target layer imaging in the subsurface which has a great impact on seismic data quality. In this paper, we propose an optimal crooked line survey method for decreasing the surface survey operational difficulties and improving the sub-layer event continuity. The method concentrates on the surface shooting conditions, first, selecting the proper shot positions based on the specific surface topographic features to reduce the shot difficulties and then optimizing the receiver positioning to meet the prerequisite that the subsurface reflection points remain in a straight line. Using this method cannot only lower the shooting difficulty of rough surface condition areas but also overcome the subsurface reflection point bending problem appearing in the traditional crooked line survey method. On the other hand, we use local infill shooting rather than conventional overall infill shooting to improve sublayer event continuity and uniformity with lower survey operation cost. A model has been calculated and processed with the proposed optimal crooked line survey and local infill shooting design method workflow and the results show that this new method can work for seismic surveys in double complex areas.

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Authors and Affiliations

  1. Resources and Environment Department, Southwest Petroleum University, Chengdu, 610500, China

    Hu Zhao, Cheng Yin & Shu-Lin Pan

  2. Qinghai Oilfield Exploration and Development Institute, Dunhuang, 736202, China

    Ming-Sheng Wu

  3. Chuanqing Drilling and Exploration Corporation, Sichuan Geophysical Company, Chengdu, 610213, China

    Xiao-Hua Wu

Authors
  1. Hu Zhao
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  2. Cheng Yin
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  3. Ming-Sheng Wu
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  4. Xiao-Hua Wu
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  5. Shu-Lin Pan
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Additional information

This work was funded by the National Basic Research program of China (973 Program) (No. 2009CB219403), Applied Basic Research Project of CNPC (No: 2011B-3706), School Fund of SWPU, and Earth Exploration and Information Technology of Sichuan Provincial Key Disciplines Construction Program.

Zhao Hu, Lecturer, received his MS in the China University Mining and Technology in 2007 and currently or his PhD in the Chengdu University of Technology. His research interests are seismic survey methods and reservoir prediction. He also works in the Resources and Environment Department of Southwest Petroleum University.

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Zhao, H., Yin, C., Wu, MS. et al. Research on seismic survey design for doubly complex areas. Appl. Geophys. 9, 279–285 (2012). https://doi.org/10.1007/s11770-012-0326-4

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  • DOI: https://doi.org/10.1007/s11770-012-0326-4

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