Device for marine seismic explorations
AssigneeSercel
InventorStephen Chelminski
Life of this patent
Estimating the term…
Abstract
A seismic source for generating seismic waves under water includes an operating head having an operating chamber, a cushion chamber, and discharge ports, a firing chamber attached to the operating head, the firing chamber configured to hold compressed air to be discharged through the discharge ports, and a shuttle assembly having a shaft located within the operating head and configured to prevent the compressed air in the firing chamber to enter the discharge ports when in a close state, and to allow the compressed air in the firing chamber to be discharged through the discharge ports when in an open state. The shaft of the shuttle assembly which extends in both the operating chamber and the cushion chamber, has a channel having a varying depth.
Claims18
A seismic source for generating seismic waves under water, the seismic source comprising:
- an operating head having plural discharge ports;
- a firing chamber attached to the operating head, the firing chamber configured to hold compressed air to be discharged through the plural discharge ports;
- and
- a shuttle assembly having a shaft located within the operating head and the shuttle assembly is configured to prevent the compressed air in the firing chamber to enter the plural discharge ports when in a close state, and to allow the compressed air in the firing chamber to be discharged through the plural discharge ports when in an open state,
- wherein, the operating head has an operating chamber and a cushion chamber, the shaft extends into both the operating chamber and the cushion chamber,
- wherein the shaft has a longitudinal channel having a varying depth, such that air is released from the operating chamber, through the longitudinal channel, into the cushion chamber, at varied rates of air flow.
Dependencies are inferred from the claim text.