The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 28, 2003
Filed:
Oct. 19, 1999
Frederick J. Barr, Pearland, TX (US);
Other;
Abstract
A method of marine seismic surveying, whereby a seismic streamer is towed in a body of water while deploying three (3) sensors in close proximity to each other. In one embodiment of the invention, the first sensor generates a first signal indicative of pressure of the water, the second sensor generates a second signal indicative of vertical movement of water, and the third sensor generates a third signal indicative of vertical movement of the streamer relative to the water. A seismic signal is generated in the water and the resulting signal is detected with each of the three (3) sensors simultaneously during time intervals following the generation of the seismic signal. The second signal is combined with the third signal to generate a fourth signal that measures vertical movement of the water with noise due to streamer vibration attenuated. The first signal is combined with the fourth signal to give a signal that attenuates the ghost due to the water surface. In a second embodiment of the invention, the third sensor is sensitive to the pressure in the water and the vertical motion of the sensor. By combining the output of the three sensors, a substantially noise-free and ghost-free seismic signal is obtained.