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Summary Seismic imaging has proven to be critical to mitigate risks during sub-surface resource exploitation. Its ability to image large 3D areas with high resolution down to several kilometers of depth allows for better localization of targeted resources, more accurate volume estimations and enhanced well trajectories; however, the quality of the seismic image greatly depends on the quality of the acquired data and subsequent processing and imaging. To optimize the seismic image quality, joint planning of the survey acquisition design and the data processing for a targeted objective is key for quantitative interpretation of the reservoir and to improve the drilling efficiency. Such collaborative planning, common in the oil and gas industry, has been successfully implemented during the North of Alsace geothermal campaign which took place from 2018 to 2019. This paper describes how we exploited the synergy between survey design and data processing to meet geothermal objectives of interpreting the deep crystalline fault network. The image obtained can then be used to build a structural model for planning new production wells. |
