CN2516983Y - Underground phased array acoustic radiator - Google Patents
Underground phased array acoustic radiator Download PDFInfo
- Publication number
- CN2516983Y CN2516983Y CN 01268574 CN01268574U CN2516983Y CN 2516983 Y CN2516983 Y CN 2516983Y CN 01268574 CN01268574 CN 01268574 CN 01268574 U CN01268574 U CN 01268574U CN 2516983 Y CN2516983 Y CN 2516983Y
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- array
- underground
- transducer
- array element
- utility
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- Transducers For Ultrasonic Waves (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The utility model provides an underground sounding element with a phase controlled linear-array, which is an array type transducer. The utility model is formed by the arrangement of at least three circular tube type transducers (array elements) along the same axes, and a rubber interlayer is arranged among the transducers (array elements) to realize the sound isolation and the electrical isolation between the adjacent array elements. Each array element can be a piezoelectric circular tube, and also can be other transducer similar to a point source. Each array element is given an accurate phase induced control, and then the emission phase shift of each array element can be adjusted, so the deflexion of the synthesis main beam which is radiated by the sounding element with a phase controlled linear-array is obtained, and then the synthesis main beam is made have a controllable space directness and a width of a radiation mainlobe.
Description
The utility model relates to a kind of of applied geophysics field and not only can be used for acoustic logging instrument but also can be used for the sound radiator that crosshole seismic is explored.
The used sound source of existing acoustic logging instrument and crosshole seismic exploration is general to adopt a transducing vibrating elements, it to around emittance equably, as shown in Figure 1, i.e. its radiation does not have tangible directive property and uncontrollable directive property in the probe use.The non-direction transmitting probe of this radiation can cause the following major defect of device for subsurface measuring: having only the small part energy is radiation and then be formed with the signal of usefulness in the stratum of receiving transducer one side, thereby and most of emittance will form garbage signal to the direction radiation of an opposite side with receiving transducer; This radiator has excited very strong Stoneley wave in well mud, Stoneley wave is the undesired signal of stratum useful signal often.Although the method for existing extremely indivedual instrument application phase control attempts to improve the directive property of sound radiator, but owing to adopt the radiator of two array elements, its emittance relatively a little less than, radiation direction is difficult to control, can not satisfy the needs of crosshole seismic exploration and emerging borehole acoustic reflection imaging.
The purpose of this utility model is to provide a kind of that can use in the down-hole, radiation direction and all controllable phased linear array sound radiator of radiation main lobe angular width.
The purpose of this utility model is to realize like this, the underground phased array sound radiator is the array transducer, it is to arrange the transducer array that forms by 3 above pipe shape transducers (array element) along same axis, a channel rubber is housed between each transducer (array element) isolates to realize the acoustic-electric between the adjacent array element.Each array element can be the piezoelectricity pipe, also can be other transducer that is similar to point sound source.
Describe concrete structure of the present utility model in detail below in conjunction with drawings and Examples.
Fig. 1 is the sound radiator directive property synoptic diagram of a pipe shape array element.
Fig. 2 is the underground phased array sound radiator structural representation of four array elements proposing according to the utility model.
Fig. 3 is the radiation directivity synoptic diagram of the underground phased array sound radiator of four array elements proposing according to the utility model.
The sound radiator that the utility model proposed is the array transducer, as shown in Figure 2, by 3 above pipe shape transducers is that array element 1 is arranged the transducer array that forms along same axis, has a channel rubber 2 to isolate to realize the acoustic-electric between the adjacent array element between each array element.Each array element can be the piezoelectricity pipe, also can be other transducer that is similar to point sound source.According to the sound field theory, the directive property of phased linear array sound radiator is to be interfered the result of stack in the place by its each array element emitting sound wave, with the distribution of each array element with to be applied on the array element phase place of signal relevant.Each array element is wherein carried out the accurate phase control that excites, thereby obtain the deflection of the synthetic main beam of phased linear array sound radiator radiation, make it have spatial direction and the radiation main lobe width that to control with the emission phase shift of adjusting each array element.
Because the underground phased array sound radiator is made of 3 above vibrating elementss, isolated by acoustic-electric between each vibrating elements and load phase shift signalling, thereby can in the use of down-hole, adjust the directive property of radiator and the angular width at radiation main lobe angle at any time, acoustic wave energy is concentrated to receiving transducer one side radiation, fundamentally improve the signal to noise ratio (S/N ratio) of received signal, increase investigative range significantly.
The utility model proposes the phased linear array sound radiator that adopts 3 above array elements, can guarantee that again radiator can the enough energy of radiation, thereby can be used for actual sonic prospecting so that the acoustic beam of sound radiator and radiation main lobe angular width are controlled.
The underground phased array sound radiator that the utility model proposed both can be used for existing acoustic logging instrument logs well in uncased hole and cased well, can be used for the acoustic signals emission of crosshole seismic exploration again.
Utilize this phased linear array sound radiator can fundamentally overcome the non-directive and the uncontrollable shortcoming of directive property of existing sonic prospecting instrument probe, improve the detectivity and the signal to noise ratio (S/N ratio) of acoustic logging and crosshole seismic exploration.
Claims (3)
1. a underground phased array sound radiator is the array transducer, it is characterized in that being formed along same axis arrangement by 3 above pipe shape transducers (array element).
2. underground phased array sound radiator according to claim 1 is characterized in that having between each array element of said transducer a channel rubber to isolate to realize the acoustic-electric between the adjacent array element.
3. underground phased array sound radiator according to claim 1 is characterized in that said transducer (array element) can be the piezoelectricity pipe, also can be other transducer that is similar to point sound source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01268574 CN2516983Y (en) | 2001-11-21 | 2001-11-21 | Underground phased array acoustic radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01268574 CN2516983Y (en) | 2001-11-21 | 2001-11-21 | Underground phased array acoustic radiator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2516983Y true CN2516983Y (en) | 2002-10-16 |
Family
ID=33674741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01268574 Expired - Fee Related CN2516983Y (en) | 2001-11-21 | 2001-11-21 | Underground phased array acoustic radiator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2516983Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029565B (en) * | 2006-11-30 | 2010-05-12 | 中国石油天然气集团公司 | Method for logging open-hole direction sound wave |
| CN110687527A (en) * | 2019-10-30 | 2020-01-14 | 海鹰企业集团有限责任公司 | Method for improving directivity of wide-beam transmitting transducer and transducer |
| CN115680618A (en) * | 2021-07-29 | 2023-02-03 | 中国石油化工股份有限公司 | Array type multi-frequency sound wave oil-gas well casing visualization method and detection device |
-
2001
- 2001-11-21 CN CN 01268574 patent/CN2516983Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029565B (en) * | 2006-11-30 | 2010-05-12 | 中国石油天然气集团公司 | Method for logging open-hole direction sound wave |
| CN110687527A (en) * | 2019-10-30 | 2020-01-14 | 海鹰企业集团有限责任公司 | Method for improving directivity of wide-beam transmitting transducer and transducer |
| CN115680618A (en) * | 2021-07-29 | 2023-02-03 | 中国石油化工股份有限公司 | Array type multi-frequency sound wave oil-gas well casing visualization method and detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |