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Apparatus and method for generating a beam of acoustic energy from a borehole and applications thereof

A beam and sound wave technology, applied in the field of sound wave inquiry, can solve problems that have not been proven to be achievable, 1kHz sound waves cannot maintain parallel uncertainty principles, etc.

Inactive Publication Date: 2016-05-04
CHEVROU USA INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This 1kHz sound wave cannot be kept parallel without violating the uncertainty principle which is fundamental to the physics of wave diffraction
Not only that, mixing a 5MHz frequency to produce a 1kHz wave represents a frequency drop ratio of 5000:1, which has not been proven achievable in practice

Method used

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  • Apparatus and method for generating a beam of acoustic energy from a borehole and applications thereof
  • Apparatus and method for generating a beam of acoustic energy from a borehole and applications thereof
  • Apparatus and method for generating a beam of acoustic energy from a borehole and applications thereof

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Embodiment Construction

[0054] figure 1 A generalized diagram of a device generating parallel beams according to an aspect of the present disclosure is shown. In some embodiments, one or more sources 110 are used to generate a first signal at a first frequency and a second signal at a second frequency. By way of non-limiting example, these signals can be generated using a 2-channel signal generator. Similar signal or function generators can also be used. Signals from the source are received by one or more signal amplifiers 120 and transmitted to one or more transducers 130, which are used to generate sound waves of the first or second frequency. The first frequency and the second frequency may be broadband, having a frequency range including a center frequency around which there is some spread of frequencies. Piezoelectric transducers are one type suitable for this application. If more than one transducer is used, they can be arranged in an array configuration. By way of non-limiting example, th...

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Abstract

In certain aspects of the invention, methods of generating a beam of acoustic energy in a borehole are disclosed. The method can include generating a first sound wave at a first frequency; generating a second sound wave at a second frequency different from the first frequency, wherein the first sound wave and the second sound wave are provided by a at least one transducer on tool in the eye generates; transmits said first sound wave and said second sound wave into an acoustically nonlinear medium, wherein components of said nonlinear medium mix said first sound waves and the second sound waves to produce parallel beams, wherein the parallel beams have a frequency based on the difference between the first frequency range and the second frequency, and the nonlinear medium has 100 m / s and 800 m The speed of sound between / s.

Description

[0001] Cross References to Related Applications [0002] This application is a continuation-in-part of co-pending US Patent Application Serial No. 12 / 166,842, filed July 2, 2008, the entire contents of which are hereby incorporated by reference. [0003] government rights [0004] This invention was made with Government support under Contract No. DE-AC52-06NA35396 of the United States Department of Energy Award Cooperative Research and Development Agreement (CRADA). The United States Government may have certain rights in this invention. technical field [0005] In general, the present invention relates to acoustic interrogation of formations surrounding boreholes, and more particularly to the use of combinations of acoustic sources comprising a single transducer or array of transducers in a borehole connected to a nonlinear material to generate an acoustic beam, As a detection tool from the wellbore to inquire about the properties of rock formations and materials around the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/46
CPCG01V1/46G01V1/00G01V1/006
Inventor C·K·武D·N·辛哈C·潘缇K·T·尼赫伊D·P·施密特C·司科尔特
Owner CHEVROU USA INC