CN1621860A - Multipolar acoustic velocity log transmitting transducer - Google Patents
Multipolar acoustic velocity log transmitting transducer Download PDFInfo
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- CN1621860A CN1621860A CN 200310115237 CN200310115237A CN1621860A CN 1621860 A CN1621860 A CN 1621860A CN 200310115237 CN200310115237 CN 200310115237 CN 200310115237 A CN200310115237 A CN 200310115237A CN 1621860 A CN1621860 A CN 1621860A
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Abstract
The present invention is one kind of multipole sound wave well logging transducer, and belongs to the field of applied geophysics and petroleum engineering technology. Four bar dipoles are used to constitute one array transducer, and transducers are isolated acoustically and electrically, so as to constitute the multipole sound wave well logging transducer with monopole radiating function, orthogonal dipole radiating function and four-pole radiating function simultaneously for well logging in petroleum engineering. The technology of present invention may be used in shortening the multipole sound wave well logging instrument, simplifying the waveform treatment in multipole sound wave well logging and raising the speed in sound wave well logging.
Description
Technical field
The present invention relates to a kind of multipole array acoustic log transmitting transducer, it is the improvement that belongs to logging technology in applied geophysics, the petroleum engineering.This technology mainly is by four bar shaped dipoles are come forming array formula transducer as array element, and between each array element, adopt acoustic-electric to isolate, can have the multipole array acoustic log transmitting transducer of monopole radiation function, cross-dipole radiation function and quadrapole radiation function simultaneously thereby become in the well logging construction of petroleum engineering, and the sound radiator that can utilize present technique to propose shortens length (reducing 45cm at least), the simplification multipole array acoustic log waveform processing step of multipole array acoustic log instrument and improves acoustic logging speed.
Background technology
At present, in the pinger of existing acoustic logging instrument, only have monopole emission function or dipole emission function.In order to realize the multipole array acoustic log function, when making acoustic logging instrument, must make sound radiator be arranged in the diverse location of instrument with difference in functionality.For example the dipole shear wave imager (DSI) of Schlumberger company promptly is installed in a monopole transmitting transducer and two dipole transmitting transducers three diverse locations separated by a distance of instrument, and the multipole array acoustic log instrument of other internationally famous oil service company exploitation has also adopted similar structures.Although utilize this structure instrument can carry out multipole array acoustic log, but this structure causes tool length to become zone of interest big, that measure not to be overlapped, and brings a series of difficulties and harsh requirement to the processing of gathering waveform especially cross-dipole waveform processing.
Summary of the invention
Purpose of the present invention provide with regard to being to avoid above-mentioned the deficiencies in the prior art part a kind of that can use in the down-hole, have a multipole array acoustic log transmitting transducer of monopole radiation function, cross-dipole radiation function and quadrapole radiation function simultaneously.This multipole array acoustic log transmitting transducer mainly is to come forming array formula transducer by a plurality of bar shaped dipoles, its major technology characteristics array transducer that to be them formed along a square arrangement by four bar shaped dipole elements of doing flexural vibrations, its each transducer occupies a foursquare length of side, needs to carry out acoustic-electric between each transducer and isolates; Each bar shaped dipole element is an array element, and the two ends of its length direction are in the embedding fixed condition, carries out acoustic-electric between each array element and isolates; Said transducer can be the piezo-electric type dipole element, also can be other transducer that is similar to point sound source; Its circumscribed diameter range is 60～95mm, and operating frequency range is 1kHz～25kHz.
Transmitting transducer of the present invention can carry out work with following four kinds of mode of operations:
(1) monopole mode of operation: all each transducer same-phase work, this is equivalent to the vibration of a pipe;
(2) the dipole mode of operation 1: two relative transducers are with same-phase vibration, two transducer are in off working state in addition;
(3) the dipole mode of operation 2: be to exchange the duty of each transducer with the difference of dipole mode of operation 1;
(4) quadrapole mode of operation: every two adjacent transducers all are operated in antiposition phase vibrational state in four transducers.
Description of drawings
Accompanying drawing 1 is that the black shade among the figure is represented four isolated bodys of making the bar shaped dipole element of flexural vibrations according to the structural representation of multipole array acoustic log transmitting transducer proposed by the invention, and it plays the acoustic-electric buffer action between each transducer.
Wherein, the solid frame 2----flexural vibration element 3----acoustic-electric isolated body 4----edge embedding of 1----is fixed
Accompanying drawing 2 has been represented the monopole mode of operation of multipole array acoustic log transmitting transducer.
Accompanying drawing 3 has been represented the quadrapole mode of operation of multipole array acoustic log transmitting transducer.
Accompanying drawing 4 has been represented the dipole mode of operation 1 of multipole array acoustic log transmitting transducer.
Accompanying drawing 5 has been represented the dipole mode of operation 2 of multipole array acoustic log transmitting transducer.
Arrow represents to vibrate phasic state among the figure, and the identical expression vibration of direction of arrow position is mutually identical, direction of arrow phase antirepresentation vibration position is mutually opposite, and no arrow represents that oscillator is in off working state.
Embodiment
Come enumeration technical characterstic of the present invention below in conjunction with inventive embodiment.
The object of the present invention is achieved like this, and as shown in drawings, the multipole array acoustic log transmitting transducer is the array transducer that is formed along a square arrangement by four bar shaped dipole elements of doing flexural vibrations.Each transducer occupies a foursquare length of side, carries out acoustic-electric between each transducer and isolates.Each bar shaped dipole element is an array element, and the two ends of its length direction are in embedding and decide state.Each array element can be the dipole element of piezo-electric type, also can be other transducer that is similar to point sound source.The circumscribed diameter range of multipole array acoustic log transmitting transducer is 60～95mm, and operating frequency range is 1kHz～25kHz.This sound radiator can adopt four kinds of mode of operations.
(1) monopole mode of operation: all each transducer same-phase work, this is equivalent to the vibration of a pipe.
(2) the dipole mode of operation 1: two relative transducers are with same-phase vibration, two transducer are in off working state in addition.
(3) the dipole mode of operation 2: be to exchange the duty of each transducer with the difference of dipole mode of operation 1.
(4) quadrapole mode of operation: every two adjacent transducers all are operated in antiposition phase vibrational state in four transducers.
In reality well logging construction, mode of operation (1) can be used for the monopole acoustic logging, mode of operation (2) or mode of operation (3) can be used for the dipole acoustic well logging, alternately utilize mode of operation (2) and mode of operation (3) can carry out the cross-dipole acoustic logging, mode of operation (4) can be applied to the quadrapole acoustic logging.
Claims (4)
1. multipole array acoustic log transmitting transducer, it mainly is to come forming array formula transducer by four bar shaped dipoles, it is characterized in that the array transducer that it is formed along a square arrangement by four bar shaped dipole elements of doing flexural vibrations, its each transducer occupies a foursquare length of side, needs to carry out acoustic-electric between each transducer and isolates; Each bar shaped dipole element is an array element, and the two ends of its length direction are in embedding and decide state.
2. multipole array acoustic log transmitting transducer according to claim 1 is characterized in that said transducer can be the piezo-electric type dipole element, also can be other transducer that is similar to point sound source.
3. multipole array acoustic log transmitting transducer according to claim 1, the circumscribed diameter range that it is characterized in that said transducer is 60～95mm, operating frequency range is 1kHz～25kHz.
4. multipole array acoustic log transmitting transducer according to claim 1 is characterized in that said transmitting transducer can carry out work with following four kinds of mode of operations:
(1) monopole mode of operation: all each transducer same-phase work, this is equivalent to the vibration of a pipe;
(2) the dipole mode of operation 1: two relative transducers are with same-phase vibration, two transducer are in off working state in addition;
(3) the dipole mode of operation 2: be to exchange the duty of transducer with the difference of dipole mode of operation 1;
(4) quadrapole mode of operation: every two adjacent transducers all are operated in antiposition phase vibrational state in four transducers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310115237 CN1239918C (en) | 2003-11-24 | 2003-11-24 | Multipolar acoustic velocity log transmitting transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310115237 CN1239918C (en) | 2003-11-24 | 2003-11-24 | Multipolar acoustic velocity log transmitting transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1621860A true CN1621860A (en) | 2005-06-01 |
| CN1239918C CN1239918C (en) | 2006-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310115237 Expired - Fee Related CN1239918C (en) | 2003-11-24 | 2003-11-24 | Multipolar acoustic velocity log transmitting transducer |
Country Status (1)
| Country | Link |
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| CN (1) | CN1239918C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147747A (en) * | 2013-03-29 | 2013-06-12 | 中国石油大学(华东) | Acoustic logging-while-drilling device and acoustic logging-while-drilling method |
| CN101694155B (en) * | 2009-09-18 | 2013-12-04 | 中国石油天然气集团公司 | Underground eight-unit circumferential scanning sound-wave radiator |
| CN106593420A (en) * | 2017-01-19 | 2017-04-26 | 中国石油大学(北京) | Multisource combined sound reflection logger and well side interface detection method |
| CN106930758A (en) * | 2017-03-30 | 2017-07-07 | 中国科学院声学研究所 | A kind of acoustic logging-while-drillidevice device and its method |
| CN106988727A (en) * | 2017-03-30 | 2017-07-28 | 青岛汉源传感技术有限公司 | A kind of drilling well orientation sensor |
| CN107060741A (en) * | 2016-12-05 | 2017-08-18 | 中国科学院声学研究所 | A kind of phased dual crossing dipole logging method |
| CN112647932A (en) * | 2020-12-21 | 2021-04-13 | 中国石油大学(华东) | Multi-component acoustic logging device for three-dimensional detection in well |
-
2003
- 2003-11-24 CN CN 200310115237 patent/CN1239918C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694155B (en) * | 2009-09-18 | 2013-12-04 | 中国石油天然气集团公司 | Underground eight-unit circumferential scanning sound-wave radiator |
| CN103147747A (en) * | 2013-03-29 | 2013-06-12 | 中国石油大学(华东) | Acoustic logging-while-drilling device and acoustic logging-while-drilling method |
| CN103147747B (en) * | 2013-03-29 | 2014-12-03 | 中国石油大学(华东) | Acoustic logging-while-drilling device and acoustic logging-while-drilling method |
| CN107060741A (en) * | 2016-12-05 | 2017-08-18 | 中国科学院声学研究所 | A kind of phased dual crossing dipole logging method |
| CN107060741B (en) * | 2016-12-05 | 2019-12-24 | 中国科学院声学研究所 | Phase-control double-cross dipole logging method |
| CN106593420A (en) * | 2017-01-19 | 2017-04-26 | 中国石油大学(北京) | Multisource combined sound reflection logger and well side interface detection method |
| CN106930758A (en) * | 2017-03-30 | 2017-07-07 | 中国科学院声学研究所 | A kind of acoustic logging-while-drillidevice device and its method |
| CN106988727A (en) * | 2017-03-30 | 2017-07-28 | 青岛汉源传感技术有限公司 | A kind of drilling well orientation sensor |
| CN112647932A (en) * | 2020-12-21 | 2021-04-13 | 中国石油大学(华东) | Multi-component acoustic logging device for three-dimensional detection in well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1239918C (en) | 2006-02-01 |
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Granted publication date: 20060201 Termination date: 20211124 |