CN101694155A - Underground eight-unit circumferential scanning sound-wave radiator - Google Patents
Underground eight-unit circumferential scanning sound-wave radiator Download PDFInfo
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- CN101694155A CN101694155A CN200910093108A CN200910093108A CN101694155A CN 101694155 A CN101694155 A CN 101694155A CN 200910093108 A CN200910093108 A CN 200910093108A CN 200910093108 A CN200910093108 A CN 200910093108A CN 101694155 A CN101694155 A CN 101694155A
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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, the 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 sound source (comprising monopole sound source, sound source of the dipole and quadrapole sound source), the multipole sound source has been brought into play good effect in the modern acoustic logging technology, but the sound field of its radiation does not possess circumferential distribution characteristics substantially or only has relatively poor circumferential distribution characteristics, is unfavorable for having in the down-hole acoustic measurement of azimuth resolution.
The controlled down-hole of Chinese patent application ZL 20,031,011 5236.1 disclosed a kind of any directive property sound radiator is incorporated in this, with 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 down-hole soic wave transmitting energy converter, 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, so actually implement very big difficulty.
Summary of the invention
The purpose of the embodiment of the 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 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 used to carry 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, are used for radiative acoustic wave.
The useful technique effect of the embodiment of the 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.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of embodiment of the invention underground eight-unit circumferential scanning sound-wave radiator;
Fig. 2 is the cross-sectional view of embodiment of the invention underground eight-unit circumferential scanning sound-wave radiator;
Fig. 3 is the structural representation of embodiment of the invention piezo-electric type three lamination dipole elements;
Fig. 4 is the direction schematic diagram of No. 1 piezoelectric vibrator radiative acoustic wave of the embodiment of the invention;
Fig. 5 is the direction schematic diagram of No. 2 piezoelectric vibrator radiative acoustic waves of the embodiment of the invention;
Fig. 6 is the direction schematic diagram of No. 3 piezoelectric vibrator radiative acoustic waves of the embodiment of the invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
As shown in Figure 1, the embodiment of the 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 used to carry a described piezoelectric vibrator; Described eight oscillator bearing surfaces are measure-alike rectangle face, and described eight oscillator bearing surfaces constitute the side of eight prisms.Described oscillator carrier also has formation described eight prismatic two discs 104 going up bottom surface, 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, are used for radiative acoustic wave; Each piezoelectric vibrator can be to combine closely to clamp fixed mode 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.
Fig. 2 is the cross-sectional view of embodiment of the invention underground eight-unit circumferential scanning sound-wave radiator, and as shown in Figure 2, the cross section of radiator is an octagon, and the edge of the disc 104 of Fig. 1 is the circumscribed circle of octagon.Each piezoelectric vibrator serial number, and occupy the length of side of octagon.Be not in contact with one another between each piezoelectric vibrator, isolate to carry out acoustic-electric.Each piezoelectric vibrator is a vibration unit, and the two ends of its length direction are in pincers and decide state (as Fig. 1).Each vibration unit can be three lamination dipole elements of piezo-electric type, also can be other transducer that is similar to point sound source.
Fig. 3 is the structural representation of embodiment of the 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 that contacts 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 metal substrate 301 discontiguous faces) 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 when 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, and the OA direction is the direction of 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 when 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, and the OB direction is the direction of 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 when 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, and the OC direction is the direction of No. 3 piezoelectric vibrator radiative acoustic wave Main beams.Just can be when by that analogy, each piezoelectric vibrator is worked respectively successively to different circumferential scanning radiative acoustic waves.In conjunction with Fig. 4, Fig. 5 and Fig. 6 as can be seen, the angle of OB direction and OA direction is that the angle of 45 °, OB direction and OC direction is 45 °, and the angle of promptly adjacent twice radiative acoustic wave Main beam is 45 °.
The useful technique effect of the embodiment of the invention: the underground eight-unit circumferential scanning sound-wave radiator of the embodiment of the invention is used 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 above only is the specific embodiment of the present invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
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 used to carry 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, are used for radiative acoustic wave.
2. radiator as claimed in claim 1 is characterized in that, each piezoelectric vibrator is combined closely to clamp fixed mode with corresponding oscillator bearing surface.
3. radiator as claimed in claim 1 is characterized in that, described eight oscillator bearing surfaces are measure-alike rectangle face.
4. underground eight-unit circumferential scanning sound-wave radiator as claimed in claim 1 is characterized in that, described eight oscillator bearing surfaces constitute the side of described eight prisms.
5. underground eight-unit circumferential scanning sound-wave radiator as claimed in claim 4 is characterized in that, described oscillator carrier also has formation described eight prismatic two discs going up bottom surface, and the diameter of described disc is 50mm to 95mm.
6. radiator as claimed in claim 1 is characterized in that, adjacent described piezoelectric vibrator does not mechanically contact.
7. radiator as claimed in claim 1 is characterized in that, described eight piezoelectric vibrators are according to clockwise or counterclockwise order difference radiative acoustic wave.
8. radiator as claimed in claim 1 is characterized in that, described eight piezoelectric vibrators are according to radiative acoustic wave of the identical time interval successively.
9. radiator as claimed in claim 1 is characterized in that, the angle of the radiation Main beam of adjacent two piezoelectric vibrators is 45 degree.
10. radiator as claimed in claim 1 is characterized in that, described piezoelectric vibrator is piezo-electric type three lamination dipole elements.
11. radiator as claimed in claim 1 is characterized in that, 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 |
|---|---|---|---|
| CN2009100931089A CN101694155B (en) | 2009-09-18 | 2009-09-18 | Underground eight-unit circumferential scanning sound-wave radiator |
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| CN101694155A true CN101694155A (en) | 2010-04-14 |
| CN101694155B CN101694155B (en) | 2013-12-04 |
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| CN2009100931089A Active CN101694155B (en) | 2009-09-18 | 2009-09-18 | Underground eight-unit circumferential scanning sound-wave radiator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113197194A (en) * | 2021-05-26 | 2021-08-03 | 成都西科微波通讯有限公司 | Omnidirectional sound wave bird repeller and bird repelling method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6909666B2 (en) * | 2000-11-13 | 2005-06-21 | Baker Hughes Incorporated | Method and apparatus for generating acoustic signals for LWD shear velocity measurement |
| CN1267748C (en) * | 2003-06-18 | 2006-08-02 | 中国石油天然气集团公司 | Down-hole orientation angle and orientation directionality controlled circular array acoustic wave radiator |
| CN1239918C (en) * | 2003-11-24 | 2006-02-01 | 中国石油天然气集团公司 | Multipolar acoustic velocity log transmitting transducer |
| CN1239917C (en) * | 2003-11-24 | 2006-02-01 | 中国石油天然气集团公司 | Directional controlled down-hole sound wave radiator at will |
| 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113197194A (en) * | 2021-05-26 | 2021-08-03 | 成都西科微波通讯有限公司 | Omnidirectional sound wave bird repeller and bird repelling method |
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| CN101694155B (en) | 2013-12-04 |
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