The Rayflex Electro-Sonic Profiler was developed for petroleum exploration in 1961. The general objectives of its development were to provide marine seismic information in greater clarity and detail than previous methods at modest costs. Initially a tool for shallow depths, the Electro-Sonic Profiler has through use and further engineering become capable of revealing detail at production levels. In addition, its application to deep-water oceanography has advanced the study of the oceanic province by many years. Present use of the Electro-Sonic Profiler has shown numerous types of geological events in near text book quality.

Compositing and playback techniques have expanded capabilities towards the deep "look-see." Interpretation problems are minimized through use of special recording techniques. Numerous marine profiles demonstrate the flexibility and usefulness of the method.

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