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Method and apparatus for sensing underwater signals

A technology of sensing elements and transducers, used in seismology, seismic signal receivers, and acceleration measurements using inertial forces in areas covered by water, which can solve the problem of inefficiency in detecting other signals

Active Publication Date: 2014-01-29
ION GEOPHYSICAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such materials are particularly well-suited for detecting certain signals, but may be ineffective for detecting others, such as the low-level signals that may need to be detected during seismic imaging

Method used

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  • Method and apparatus for sensing underwater signals
  • Method and apparatus for sensing underwater signals
  • Method and apparatus for sensing underwater signals

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Embodiment Construction

[0029] Scientists and engineers perform "reconnaissance" to find reservoirs of oil and gas in the earth using, among other things, seismic and other wave exploration techniques. These seismic exploration techniques often involve controlling the emission of seismic energy into the earth with a seismic energy source (eg, explosives, air guns, vibrators, etc.) and monitoring the earth's response to the seismic source with one or more receivers. By observing the reflected seismic signals detected by the receivers during the survey, geophysical data related to the reflected signals can be acquired and these signals can be used to form images indicative of the composition of the earth in the vicinity of the survey location.

[0030] figure 1 A side view of a vessel 101 is shown towing a source 102 and several receivers 103 on a streamer behind the vessel 101 . As shown, receiver 103 may be positioned slightly below the surface of the water. For ease of discussion, figure 1 The de...

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Abstract

Methods and apparatuses are disclosed that assist in sensing underwater signals in connection with geophysical surveys. One embodiment relates to a transducer including a cantilever coupled to a base. The cantilever may include a beam and a first coupling surface angularly oriented from the beam, and the base may include a second coupling surface angularly oriented from the beam and substantially parallel to the first coupling surface of the cantilever. The transducer may further include a sensing material coupled between the first coupling surface of the cantilever and the second coupling surface of the base.

Description

[0001] This Patent Cooperation Treaty patent application claims priority to U.S. Provisional Application No. 61 / 462,617, filed February 7, 2011, entitled "An Underwater Vector Sensor by Using Batch Fabricated Precision Capacitive Accelerometer," and filed February 2011 Priority to U.S. Provisional Application No. 61 / 462,656, entitled "Underwater Vector Sensor by Using Piezoelectric Flexible Shear Mode Sensor," filed on the 7th, is incorporated herein by reference in its entirety. technical field [0002] The present disclosure relates generally to transducers, and more particularly to transducers for sensing underwater signals, such as acoustic signals. Background technique [0003] Petrochemicals such as oil and gas are ubiquitous in society and can be found in everything from gasoline to children's toys. Therefore, the demand for oil and gas remains high. To meet this high demand, it is important to find oil and gas reserves in the earth. Scientists and engineers perform...

Claims

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Application Information

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IPC IPC(8): G01H11/08G01P15/09G01P15/12G01P15/18G01V1/18
CPCG01P15/09G01P15/0915G01V13/00G01P2015/0805G01V1/18G01V1/38G01P15/123G01P2015/0828G01P15/18G01H11/08H02N1/006Y10T29/49005G01P15/125
Inventor K.K.邓
Owner ION GEOPHYSICAL CORP
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