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<p>Reasonable field acquisition geometry can not only guide seismic exploration to obtain sufficient geological information of target body, but also reduce acquisition cost to the maximum. In this study, building on conventional ray-based geometry design methods, we incorporate imaging results as a constraint to optimize the geometry design and evaluate its effectiveness. Firstly, the geological model of the target layer is established based on the geological data of the study area and surface seismic data combined with exploration tasks. Then, the ray-tracing method is employed to simulate and assess the proposed geometry design, verifying whether its parameters meet the exploration requirements. Finally, the imaging effect of the designed geometry on the target layer is tested by the cross-well seismic reverse time migration method. This methodology was applied to design the cross-well seismic acquisition geometry for offshore deviated wells in the X Oilfield. The simulation results demonstrate that the imaging-driven geometry design approach effectively guides field operations, enhances the imaging quality of the target layer, and reduces acquisition costs.</p>

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The Design Method of Cross-well Seismic Geometry Driven by Reverse Time Migration

  • 期刊论文

  • 发表日期：

    2025年3月14日

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  • Xiao-yong Cao,
  • Fei-long Yang,
  • Wei-jing Hui,
  • Shao-hua Ruan,
  • Dai Yu,
  • Wen-zhen Fang,
  • Xin-yue Guo

摘要

Reasonable field acquisition geometry can not only guide seismic exploration to obtain sufficient geological information of target body, but also reduce acquisition cost to the maximum. In this study, building on conventional ray-based geometry design methods, we incorporate imaging results as a constraint to optimize the geometry design and evaluate its effectiveness. Firstly, the geological model of the target layer is established based on the geological data of the study area and surface seismic data combined with exploration tasks. Then, the ray-tracing method is employed to simulate and assess the proposed geometry design, verifying whether its parameters meet the exploration requirements. Finally, the imaging effect of the designed geometry on the target layer is tested by the cross-well seismic reverse time migration method. This methodology was applied to design the cross-well seismic acquisition geometry for offshore deviated wells in the X Oilfield. The simulation results demonstrate that the imaging-driven geometry design approach effectively guides field operations, enhances the imaging quality of the target layer, and reduces acquisition costs.