Tgs-Nopec Geophysical Company

Kenneth Graeme Williamson

Timothy A Dudley

Paul Farmer

Nikolaos Bernitsas

Darrell Burch

Joseph Richard Gagliardi

The embodiments herein describe a seismic source that includes at least two firing heads connected to a shared reservoir of compressed gas. When underwater, a controller can instruct the firing heads to fire at the same time or at different times to create gas bubbles that generate seismic energy for identifying structures underneath a body of water. If the firing heads fire at the same, the resulting gas bubble may coalesce to form a single bubble, depending on the size of the respective bubbles and the separation distance between the firing heads. In one embodiment, the firing heads are attached at opposite ends of the shared reservoir (although this is not a requirement). The length of the reservoir, which dictates in part the separation distance of the firing heads, can be set so that gas bubbles generated by the firing heads at substantially the same time coalesce.

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Houston, TX, United States of America

Kenneth Graeme Williamson