CN101694155B - Underground eight-unit circumferential scanning sound-wave radiator - Google Patents
Underground eight-unit circumferential scanning sound-wave radiator Download PDFInfo
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- CN101694155B CN101694155B CN2009100931089A CN200910093108A CN101694155B CN 101694155 B CN101694155 B CN 101694155B CN 2009100931089 A CN2009100931089 A CN 2009100931089A CN 200910093108 A CN200910093108 A CN 200910093108A CN 101694155 B CN101694155 B CN 101694155B
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Abstract
The invention provides an underground eight-unit circumferential scanning sound-wave radiator which comprises a vibrator supporting rack and eight piezoelectric vibrators, wherein the vibrator supporting rack is an octagonal prism in shape and has eight vibrator supporting surfaces, and each vibrator supporting surface is used for supporting one piezoelectric vibrator. The eight piezoelectric vibrators correspond to the eight vibrator supporting surfaces respectively, and each piezoelectric vibrator is combined closely with the corresponding vibrator supporting surface for radiating sound waves. The invention can solve the problem of radiating sound waves in an underground sound source direction, decrease array element number of a transducer array and reduce the complexity of an excitation and control circuit.
Description
Technical field
The present invention is about the acoustic logging in geophysics, petroleum works, especially in regard to a kind of underground eight-unit circumferential scanning sound-wave radiator.
Background technology
The sound source of existing acoustic logging instrument generally adopts multipole source (comprising monopole sound source, sound source of the dipole and quadrapole sound source), multipole source has been brought into play good effect in the modern acoustic logging technology, but the sound field of its radiation does not substantially possess circumferential distribution characteristics or only has poor circumferential distribution characteristics, is unfavorable for being had in down-hole the acoustic measurement of azimuth resolution.
The disclosed a kind of any directive property controllable downhole sound radiator of Chinese patent application ZL200310115236.1 is incorporated in this, usings as prior art of the present invention.This patent application has proposed to utilize the method that adopts phased circular array, solved the problem of any circumferential direction radiated sound field of Acoustic transmitting transducer, but the element number of array of this patent application transducer array is more, control and exciting circuit complicated and the uniformity of a plurality of transducer array elements are difficult to guarantee, implements very large difficulty so actual.
Summary of the invention
The purpose of the embodiment of the present invention is to provide a kind of underground eight-unit circumferential scanning sound-wave radiator, to solve the difficult problem of sound bearing, down-hole radiative acoustic wave.
To achieve these goals, the embodiment of the present invention provides a kind of underground eight-unit circumferential scanning sound-wave radiator, and described underground eight-unit circumferential scanning sound-wave radiator comprises: described radiator comprises: oscillator carrier and eight piezoelectric vibrators; Wherein, described oscillator carrier has eight oscillator bearing surfaces, and each described oscillator bearing surface is for carrying a described piezoelectric vibrator; Described eight piezoelectric vibrators are corresponding one by one with described eight oscillator bearing surfaces, and each piezoelectric vibrator combines closely with corresponding oscillator bearing surface, for radiative acoustic wave.
The useful technique effect of the embodiment of the present invention: the complexity that can solve the difficult problem of sound bearing, down-hole radiative acoustic wave, the element number of array that can reduce transducer array, reduction excitation and control circuit.
The accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation that Fig. 1 is embodiment of the present invention underground eight-unit circumferential scanning sound-wave radiator;
The cross-sectional view that Fig. 2 is embodiment of the present invention underground eight-unit circumferential scanning sound-wave radiator;
The structural representation that Fig. 3 is embodiment of the present invention piezo-electric type three lamination dipole elements;
Fig. 4 is No. 1 piezoelectric vibrator radiated sound wave line of propagation schematic diagram of the embodiment of the present invention;
Fig. 5 is No. 2 piezoelectric vibrator radiated sound wave line of propagation schematic diagrames of the embodiment of the present invention;
Fig. 6 is No. 3 piezoelectric vibrator radiated sound wave line of propagation schematic diagrames of the embodiment of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, belong to the scope of protection of the invention.
As shown in Figure 1, the embodiment of the present invention provides a kind of underground eight-unit circumferential scanning sound-wave radiator, and described underground eight-unit circumferential scanning sound-wave radiator comprises: described radiator comprises: oscillator carrier 101 and eight piezoelectric vibrators 102; Wherein, the profile of described oscillator carrier is eight prisms, and has eight oscillator bearing surfaces 103, and each described oscillator bearing surface is for carrying a described piezoelectric vibrator; Described eight oscillator bearing surfaces are measure-alike rectangle face, and described eight oscillator bearing surfaces form the side of eight prisms.Described oscillator carrier also has two discs 104 that are connected with bottom surface on described eight prisms, and the diameter of described disc 104 is 50mm to 95mm.
Described eight piezoelectric vibrators are corresponding one by one with described eight oscillator bearing surfaces, and each piezoelectric vibrator combines closely with corresponding oscillator bearing surface, for radiative acoustic wave; Each piezoelectric vibrator can be to clamp fixed mode, to combine closely as shown in Figure 1 with corresponding oscillator bearing surface, the invention is not restricted to this.
Each piezoelectric vibrator of underground eight-unit circumferential scanning sound-wave radiator was encouraged and radiative acoustic wave by signal generator respectively successively by the identical time interval.Some piezoelectric vibrators are during by signal generator excitation work, and underground eight-unit circumferential scanning sound-wave radiator is basically to the azimuth direction radiative acoustic wave at this piezoelectric vibrator place.
The cross-sectional view that Fig. 2 is embodiment of the present invention underground eight-unit circumferential scanning sound-wave radiator, as shown in Figure 2, the cross section of radiator is octagon, the circumscribed circle that the edge of the disc 104 of Fig. 1 is octagon.Each piezoelectric vibrator serial number, and occupy the length of side of octagon.Between each piezoelectric vibrator, be not in contact with one another, to carry out the acoustic-electric isolation.Each piezoelectric vibrator is a vibration unit, and state (as Fig. 1) is determined in clamping in the two ends of its length direction.Each vibration unit can be the triple laminated dipole oscillator of piezo-electric type, can be also other transducer that is similar to point sound source.
The structural representation that Fig. 3 is embodiment of the present invention piezo-electric type three lamination dipole elements.As shown in Figure 3, described piezo-electric type three lamination dipole elements comprise metal substrate 301, piezoelectric ceramic piece 302 and piezoelectric ceramic piece 303, the medial surface of piezoelectric ceramic piece 302 (face contacted with metal substrate 301) is connected to wiring 304 with the medial surface of piezoelectric ceramic piece 303, and the lateral surface of piezoelectric ceramic piece 302 (with the discontiguous face of metal substrate 301) is connected to wiring 305 with the lateral surface of piezoelectric ceramic piece 303.Wiring 304 and wiring 305 are connected to signal generator, so that piezoelectric vibrator radiative acoustic wave under the excitation of the signal of telecommunication.
As shown in Figure 4, when No. 1 piezoelectric vibrator is encouraged by signal generator and other piezoelectric vibrator while not being energized, this sound radiator will be mainly to OA direction radiative acoustic wave, and the OA direction is vertical with the plane at No. 1 piezoelectric vibrator place, the direction that the OA direction is No. 1 piezoelectric vibrator radiative acoustic wave Main beam.As shown in Figure 5, when No. 2 piezoelectric vibrators are energized and other piezoelectric vibrator while not being energized, this sound radiator will be mainly to OB direction radiative acoustic wave, and the OB direction is vertical with the plane at No. 2 piezoelectric vibrator places, the direction that the OB direction is No. 2 piezoelectric vibrator radiative acoustic wave Main beams.As shown in Figure 6, when No. 3 piezoelectric vibrators are energized and other piezoelectric vibrator while not being energized, this sound radiator will be mainly to OC direction radiative acoustic wave, and the OC direction is vertical with the plane at No. 3 piezoelectric vibrator places, the direction that the OC direction is No. 3 piezoelectric vibrator radiative acoustic wave Main beams.Just can be to different circumferential scanning radiative acoustic waves when by that analogy, each piezoelectric vibrator is worked respectively successively.In conjunction with Fig. 4, Fig. 5 and Fig. 6, can find out, the angle that the angle of OB direction and OA direction is 45 °, OB direction and OC direction is 45 °, and the angle of adjacent twice radiative acoustic wave Main beam is 45 °.
The useful technique effect of the embodiment of the present invention: the underground eight-unit circumferential scanning sound-wave radiator of the embodiment of the present invention is for the acoustic logging of geophysics and petroleum works, can be applied in the occasions such as formation evaluation, cased well primary cement evaluation of open hole well, can solve sound bearing, down-hole radiative acoustic wave a difficult problem, can reduce transducer array element number of array, reduce the complexity of excitation and control circuit.
The above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only the specific embodiment of the present invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (1)
1. a underground eight-unit circumferential scanning sound-wave radiator, is characterized in that, described radiator comprises: oscillator carrier and eight piezoelectric vibrators; Wherein,
The profile of described oscillator carrier is eight prisms, and has eight oscillator bearing surfaces, and each described oscillator bearing surface is for carrying a described piezoelectric vibrator;
Described eight piezoelectric vibrators are corresponding one by one with described eight oscillator bearing surfaces, and each piezoelectric vibrator combines closely with corresponding oscillator bearing surface, for radiative acoustic wave;
Described eight piezoelectric vibrators are according to clockwise or counterclockwise order difference radiative acoustic wave;
Described eight piezoelectric vibrators are according to radiative acoustic wave of the identical time interval successively;
The angle of the radiation Main beam of adjacent two piezoelectric vibrators is 45 degree;
Each piezoelectric vibrator is combined closely to clamp fixed mode with corresponding oscillator bearing surface; Described eight oscillator bearing surfaces are measure-alike rectangle face; Described eight oscillator bearing surfaces form the side of described eight prisms; Described oscillator carrier also has two discs that are connected with bottom surface on described eight prisms, and the diameter of described disc is 50mm to 95mm; Adjacent described piezoelectric vibrator does not mechanically contact; Described piezoelectric vibrator is piezo-electric type three lamination dipole elements; The operating frequency of described piezoelectric vibrator is 5kHz to 25kHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100931089A CN101694155B (en) | 2009-09-18 | 2009-09-18 | Underground eight-unit circumferential scanning sound-wave radiator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100931089A CN101694155B (en) | 2009-09-18 | 2009-09-18 | Underground eight-unit circumferential scanning sound-wave radiator |
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| Publication Number | Publication Date |
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| CN101694155A CN101694155A (en) | 2010-04-14 |
| CN101694155B true CN101694155B (en) | 2013-12-04 |
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| CN113197194B (en) * | 2021-05-26 | 2023-01-24 | 成都西科微波通讯有限公司 | Omnidirectional sound wave bird repeller and bird repelling method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1566987A (en) * | 2003-06-18 | 2005-01-19 | 中国石油天然气集团公司 | Down-hole orientation angle and orientation directionality controlled circular array acoustic wave radiator |
| CN1621860A (en) * | 2003-11-24 | 2005-06-01 | 中国石油天然气集团公司 | Multipolar acoustic velocity log transmitting transducer |
| CN1621859A (en) * | 2003-11-24 | 2005-06-01 | 中国石油天然气集团公司 | Directional controlled down-hole sound wave radiator at will |
| WO2006033661A1 (en) * | 2004-01-24 | 2006-03-30 | Baker Hughes Incorporated | Method and apparatus for generating acoustic signals for lwd shear velocity measurement |
| CN200986595Y (en) * | 2006-08-23 | 2007-12-05 | 中国石油天然气集团公司 | Dipole transmitting transducer |
-
2009
- 2009-09-18 CN CN2009100931089A patent/CN101694155B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1566987A (en) * | 2003-06-18 | 2005-01-19 | 中国石油天然气集团公司 | Down-hole orientation angle and orientation directionality controlled circular array acoustic wave radiator |
| CN1621860A (en) * | 2003-11-24 | 2005-06-01 | 中国石油天然气集团公司 | Multipolar acoustic velocity log transmitting transducer |
| CN1621859A (en) * | 2003-11-24 | 2005-06-01 | 中国石油天然气集团公司 | Directional controlled down-hole sound wave radiator at will |
| WO2006033661A1 (en) * | 2004-01-24 | 2006-03-30 | Baker Hughes Incorporated | Method and apparatus for generating acoustic signals for lwd shear velocity measurement |
| CN200986595Y (en) * | 2006-08-23 | 2007-12-05 | 中国石油天然气集团公司 | Dipole transmitting transducer |
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| CN101694155A (en) | 2010-04-14 |
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