Can management and partners be convinced to acquire a new 3D high-resolution survey (3DHR) less than three years after acquiring a high quality, conventional 3D? This is what was proposed in 1999 in the deepwater (>1300 m) Girassol Field, offshore Angola block 17—one of TotalFinaElf's largest deepwater projects.

The business objective: To make a tangible impact on appraisal and development programs, and ultimately use the new seismic as a baseline survey for 4D monitoring.

This article describes the key steps to prepare, acquire, process, and interpret the 3DHR. Preparation included a feasibility study to determine if a new survey was...

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