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BHP Seismic Brochure Barbados
What is a seismic survey?
A seismic survey provides important information as to the structure of the earth beneath the sea floor.
When this information is analyzed it will allow the Ministry of Energy and BHP’s Exploration professionals to decide whether further investigation should be done to understand the potential for oil and gas resources. Seismic surveys are conducted by sending acoustic waves into the rock layers beneath the sea floor and then recording the time it takes for each wave to echo the characteristics of each returning wave. In water, the sound source is typically an array of different sized air-chambers, filled with compressed air.
The source is towed behind a seismic survey vessel and releases a pulse of air into the water, generating sound. The returning sound waves are detected and recorded by hydrophones that are spaced out along a series of cables towed behind the vessel. The Barbados Seismic Survey will be conducted using a Seismic Streamer Vessel towing specialized cables with an acoustic source used for data acquisition.
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