Seismic source sensor
AssigneeWesternGeco L.L.C.
InventorsDouglas L. Bremner, Loran D. Ambs
Life of this patent
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Abstract
A system for detecting source acoustic energy in seismic operations. The system is operable on land and in marine applications. On land, a piezoelectric film is positioned between a vibrator or other source baseplate and the soil. Compression of the piezoelectric film generates an electrical signal proportional to the total ground force, including force due to flexural or resonance of source components, exerted by the seismic source. In marine applications, a source displaces water to produce a pressure pulse in the water, and a piezoelectric film detects the resulting pressure pulse and the flexural movement of the source to produce an electrical signal proportional to the movement of the active component.
Claims31
An acoustic source sensor system for use in seismic operations, comprising:
- a seismic source activatable to generate an acoustic energy event;
- a pressure sensitive film disposed at least partially about and in physical contact with said source, wherein said film is responsive to said acoustic energy event;
- a connector engaged with said film for detecting said film response to said acoustic energy event and for transmitting an electric signal representing said film response;
- and
- a controller in communication with said connector and configured for receiving said electrical signal and characterizing a total energy output of said seismic source upon generation of said acoustic energy event and wherein said controller is in communication with the seismic source for selectively transmitting a control signal to the seismic source to control at least one signal characteristic of acoustic energy events generated by the seismic source.
An acoustic source sensor system for use in marine seismic operations, comprising:
- a seismic source activatable to generate an acoustic energy event in water;
- a pressure sensitive film disposed at least partially about and in physical contact with said source, wherein said film is responsive to said acoustic energy event;
- a connector engaged with said film for detecting response of said film to said acoustic energy event and for transmitting an electric signal representing said film response;
- and
- a controller in communication with said connector and configured for receiving said electrical signal and characterizing a total energy output of said seismic source upon generation of said acoustic energy event and wherein said controller is in communication with the seismic source for selectively transmitting a control signal to the seismic source to control at least one signal characteristic of acoustic energy events generated by the seismic source.
An acoustic source sensor system for use in seismic operations on soil, comprising:
- a seismic source activatable to generate an acoustic energy event discharging energy into the soil;
- a pressure sensitive film disposed between said source and the soil and in physical contact with said source, wherein said film is responsive to said acoustic energy event;
- a connector engaged with said film for detecting response of said film to said acoustic energy event and for transmitting an electric signal representing said film response;
- and
- a controller in communication with said connector and configured for receiving said electrical signal and characterizing a total energy output of said seismic source upon generation of said acoustic energy event and wherein said controller is in communication with the seismic source for selectively transmitting a control signal to the seismic source to control at least one signal characteristic of acoustic energy events generated by the seismic source.
An acoustic source sensor system for use in seismic operations, comprising:
- a slotted cylinder activatable to generate an acoustic energy event in water;
- a pressure sensitive film disposed at least partially about said slotted cylinder, wherein said film is responsive to said acoustic energy event;
- a connector engaged with said film for detecting response to said film to said acoustic energy event and for transmitting an electric signal representing said film response;
- and
- a controller engaged with said connector for receiving said electrical signal.
Dependencies are inferred from the claim text.