CN2621300Y - Multi-polar subarray acoustic logging transducer - Google Patents
Multi-polar subarray acoustic logging transducer Download PDFInfo
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- CN2621300Y CN2621300Y CN 03261891 CN03261891U CN2621300Y CN 2621300 Y CN2621300 Y CN 2621300Y CN 03261891 CN03261891 CN 03261891 CN 03261891 U CN03261891 U CN 03261891U CN 2621300 Y CN2621300 Y CN 2621300Y
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Abstract
The utility model relates to a multipole array acoustic logging transducer, which comprises a cable and a framework shell which is connected with the cable and is vertically arranged, wherein the framework shell is provided with a sound insulator, the upper part of the sound insulator is a receiving area, and the lower part of the sound insulator is a transmitting area; the receiving area is provided with a receiving circuit, a monopole receiving transducer and a dipole receiving transducer; the transmitting area is provided with a monopole transmitting transducer, a dipole transmitting transducer and a transmitting circuit, and the transmitting area is also provided with a Stoneley wave transmitting transducer. The utility model can directly measure the speed and attenuation of the Stoneley wave to obtain the permeability of the reservoir; and the distance between the transmitting transducer and the receiving transducer can be changed through a quick and convenient connection mode so as to realize cement bond logging, and the overall function of the multipole array acoustic logging transducer is expanded.
Description
Technical field
The utility model relates to a kind of acoustic logging instrument, relates in particular to a kind of multipole array sonic log transducer.
Background technology
In recent years, along with going deep into of geology and petroleum prospecting, also more and more higher to the expectation and the requirement of logging instrumentation, acoustic logging is one of important method of oil well logging.The acoustic logging that adopts is to utilize transmitting transducer to send sound wave in the down-hole at present, propagates in underground medium, after the certain hour decay, is received transducer and receives, and by the acoustic signals analysis to decay, judges underground relevant geologic structure.Acoustic wave transducer comprises monopole acoustic wave transducer and dipole acoustic transducer etc., and what the monopole soic wave transmitting energy converter excited mainly is the compressional wave signal, and what the dipole acoustic transmitting transducer excited mainly is the shear wave signal.Usually the acoustic logging instrument that adopts is the conventional acoustic logging instrument of monopole sound source now, and its shortcoming that mainly exists is: (1) can not directly extract the shear wave parameter, needs to carry out mass data through computing machine and handles; (2) in soft formation (the stratum velocity of sound is less than the mud velocity of sound), can't encourage shear wave; (3) in cased well, be difficult to obtain stratum wave parameter in length and breadth.And the shear wave parameter is judged oil, gas, water etc. for showing formation lithology, determines factor of porosity, and fluid saturation, fracture development situation etc. have vital role, and soft formation is also very important to petroleum prospecting.
In order to overcome the defective of this routine acoustic logging instrument, on original instrument, increase the dipole acoustic transducer, can directly extract the shear wave parameter in soft, the hard formation like this.But this instrument is because transmission frequency height, the loss of monopole transducer are big, sensitivity is low, can't accurately obtain Permeability Parameters, and Permeability Parameters to ask for be the important topic that oil well logging faces all the time, it is accurately asked in that to estimate on oil production rate and the reserves meaning very great.And structure by above-mentioned instrument, it also can't realize multiple acoustic logging mode, such as, cement bond log is a method commonly used in the oil well logging, be mainly used to measure the bonding quality of cement grouting behind the oil well running casing, this method measuring principle and one pole metering system are similar, but spacing (distance between the transmitter-receiver) requires longer water, therefore, changing instrument with regard to needs during the cement bond logging well just can carry out.
Summary of the invention
The purpose of this utility model is to provide a kind of can launch the more multipole array sonic log transducer of low frequency compressional wave, and reservoir permeability is asked in Stoneley wave speed and decay in the utilization sound acoustic wave train logging.
Another purpose of the present utility model is to provide a kind of multipole array sonic log transducer, can realize multiple acoustic logging mode.
The purpose of this utility model is achieved in that a kind of multipole array sonic log transducer, comprises cable, is connected in cable and vertically disposed skeleton shell, and skeleton shell is provided with sound insulator, and sound insulator top is the receiving area, and the bottom is an emitting area; The receiving area is provided with receiving circuit, monopole receiving transducer, dipole receiving transducer; Emitting area is provided with monopole transmitting transducer, dipole transmitting transducer, radiating circuit, also is provided with a Stoneley wave transmitting transducer at emitting area.
Described transducer is provided with power lead and signal wire, and this power lead and signal wire are connected in cable, and cable is connected in aboveground acoustic logging instrument.
Described monopole transmitting transducer is two; The dipole transmitting transducer is one; The monopole receiving transducer is eight; The dipole receiving transducer is eight.
The periphery of each transducer is provided with window.
Described Stoneley wave transmitting transducer is made of two identical rectangle two laminate patches; Described two laminate patches are that high temperature resistant emission type piezoelectric ceramic piece is bonded on the substrate of low-expansion alloy; Parallel and the symmetrical skeleton shell axis of two rectangles, two laminate patches is fixed on the skeleton shell; Two piezoelectric ceramic pieces connect positive source, and two substrates connects power cathode.
The two substrates of described two rectangles, two laminate patches is oppositely arranged, and distance is 30mm to 80mm between the two substrates.
Substrate is provided with through hole, corresponding first fixture block and second fixture block of being provided with in the substrate outside with through hole, and a screw passes this second fixture block, first fixture block and through hole and is bolted on the skeleton shell.
The piezoelectric ceramics of described transmitting transducer is WQ-2; The piezoelectric ceramics of described receiving transducer is WQ-1.
Described sound insulator is the certain thickness hollow circular-tube of tool, and tube wall is provided with leads sound track, and its two ends are provided with joint.
Skeleton shell is provided with a sound insulator or is provided with plural sound insulator and interconnects successively.
Because structure of the present utility model is fitted together five kinds of transducer group.Make three kinds of different different sound waves of transmitting transducer emission, and the signal of two kinds of each eight receiving transducer array received is the multiple different physical processes such as reflection, refraction and absorption by different geologic structures, and treated these signal differences can judge whether oil-containing, contain vapour and reserves thereof.Especially adding Stoneley wave transducer and highly sensitive compressional wave receiving transducer (monopole) in the utility model makes and utilizes Stoneley wave speed and decay to ask for reservoir permeability to become possibility.The utility model can be by quick, and connected mode changes distance between transmitting transducer and the receiving transducer easily, to realize cement bond log, makes the allomeric function of this multipole array sonic log transducer obtain expansion.
Description of drawings
Fig. 1 is multipole array acoustic log piezoelectric transducer array overall package figure.
Fig. 2 A is the structural drawing of monopole transmitting transducer.
Fig. 2 B is the installation diagram of monopole transmitting transducer.
Fig. 3 A is the structure installation diagram of dipole transmitting transducer.
Fig. 3 B is three laminate patch synoptic diagram of dipole transmitting transducer.
Fig. 3 C is three laminate patch sectional views of dipole transmitting transducer.
Fig. 4 A is the structure installation diagram of Stoneley wave transmitting transducer.
Fig. 4 B is the rectangle two laminate patch synoptic diagram of Stoneley wave transmitting transducer.
Fig. 4 C is the rectangle two laminate patch sectional views of Stoneley wave transmitting transducer.
Fig. 5 A is the structural drawing of monopole receiving transducer.
Fig. 5 B is the structure installation diagram of monopole receiving transducer.
Fig. 6 A is the structure installation diagram of dipole receiving transducer.
Fig. 6 B is three laminate patch synoptic diagram of dipole receiving transducer.
Fig. 6 C is three laminate patch sectional views of dipole receiving transducer.
Fig. 7 is the structural representation of sound insulator.
Embodiment
As shown in Figure 1, a kind of multipole array sonic log transducer comprises cable 1, is connected in cable 1 and vertically disposed skeleton shell 2, and skeleton shell 2 is provided with sound insulator 3, and sound insulator 3 tops are receiving area A, and the bottom is emitting area B; Receiving area A is provided with receiving circuit, monopole receiving transducer 4, dipole receiving transducer 5; Emitting area B is provided with monopole transmitting transducer 6, dipole transmitting transducer 7, radiating circuit, also is provided with a Stoneley wave transmitting transducer 8 at emitting area B.
Because 8 emissions of Stoneley wave transmitting transducer is the lower compressional wave of frequency, it is Stoneley wave, and Stoneley wave is propagated in the reservoir rock near the wellhole borehole wall, the influence that speed of propagating and amplitude are subjected to this zone rock property, the permeance property relation of fluid in rock that this is regional and the reservoir pore space (oil) is the closest, thus, can set up Stoneley wave velocity of propagation, amplitude fading and infiltrative relation, thereby obtain reservoir permeability.
As shown in Figure 1, sound insulator 3 approximately is arranged on whole energy transducer array middle part in the utility model; Skeleton shell adopts conventional skeleton shell segmentation to connect; Each transducer segmentation is connected in the whole energy transducer array, and the housing of each transducer after connecting becomes the part of skeleton shell.
Transducer described in the utility model is provided with power lead and signal wire, and this power lead and signal wire are connected in cable 1, and cable 1 is connected in aboveground acoustic logging instrument.The utility model multipole array sonic log transducer is mainly finished by ground system control transmitting transducer and receiving transducer, because numbers of transducers, of a great variety, Master System Design a plurality of mode of operations, be called " measurement subclass ", every kind of pattern has determined to use the kind of transmitting transducer and reception transducing, parameter such as number and data sampling rate, when actual measurement, each pattern can independently be carried out, also can carry out simultaneously, the use of pattern is looked actual measurement and is required and select.Monopole transmitting transducer emitting sound wave is received by the monopole receiving transducer; The sound wave that the dipole transmitting transducer sends is received by the dipole receiving transducer; The sound wave that the Stoneley wave transmitting transducer sends,, can be distinguished according to the sequential of emission sound wave when receiving sound wave so still received by the monopole receiving transducer owing to be the one pole low frequency wave.
Three kinds of different different sound waves of transmitting transducer emission, (rock, clay, oil-containing, contain vapour with moisture etc.) is different to the sonic propagation decay of emission different frequency range because the structure difference on stratum, and the signal that each receiving transducer receives is the multiple different physical processes such as reflection, refraction and absorption by different geologic structures, and treated these signal differences can judge whether oil-containing, contain vapour and reserves thereof.
In the utility model, utilize monopole, dipole and Stoneley wave transducer to form multi-polar sound source, can directly measure compressional wave, sound wave, the Stoneley wave parameter on stratum, both can be mutually with reference to checking, also can individual processing, the confidence level and the range of application of instrument have been improved greatly, also have benefited from simultaneously the cascaded structure of two ceramic pipes of one pole receiving transducer, the instrument receiving sensitivity is greatly improved.
Utilize shear wave velocity calculating elastic modulus, Poisson ratio, calculating compressive strength, the anisotropy of surveying the stratum and prediction parting pressure; Utilize longitudinal and transverse wave velocity ratio can also be used to judge gas-bearing formation; Owing to add the Stoneley wave transducer in the utility model, therefore can utilize Stoneley wave speed and decay to ask for reservoir permeability.
In the present embodiment, described monopole transmitting transducer 6 is two; Dipole transmitting transducer 7 is one; Monopole receiving transducer 4 is eight; Dipole receiving transducer 5 is eight.The emission frequency of sound wave of monopole is than the height of dipole emission, on same stratum than the dipole attenuation loss many, for Mi mends this defective, two one pole transmitting transducers are set work simultaneously; The energy of a list emission of some stratal configuration is enough, and another is as backup.Utilizing complex array to receive, is because it has vertical its axis plane to receive the narrow characteristic of directive property, the favourable locus of determining the formation parameter measured, and array element quantity is many more, and directive property is narrow more, and this use is novel gets enough usefulness of eight element array.
The periphery of each transducer is provided with window in the utility model, the sound window is positioned at around the skeleton shell of each transducer, because outer water, the mud acoustic impedance of silicone oil in its acoustic impedance and the skeleton shell and skeleton shell is complementary, thereby for transmitting transducer, it can make sound wave do not stopped or be transmitted in the stratal configuration with being stopped less and go; For receiving transducer, it can make, and to propagate into the outer echo of skeleton shell unattenuated or fewly be received damply.
Further, Stoneley wave transmitting transducer 8 described in the utility model is made of two identical rectangle two laminate patches; Shown in Fig. 4 A, Fig. 4 B, Fig. 4 C, described two laminate patches are that high temperature resistant emission type piezoelectric ceramic piece 81 is bonded on the substrate 82 of low-expansion alloy; High temperature resistant emission type piezoelectric ceramic piece 81 is WQ--2, its thick 1.0--5.0mm, wide 25--75mm, long 50--150mm, be bonded on the substrate 82 with high-temperature electric conduction glue 83, this plate is of a size of long 100--200mm, wide 5--75mm, thick 0.5--5mm, parallel and symmetrical skeleton shell 2 axis of two rectangles, two laminate patches are fixed on the skeleton shell 2; Two piezoelectric ceramic pieces 81 connect positive source 84, and two substrates 82 connects power cathode 85.
The two substrates 82 of described two rectangles, two laminate patches is oppositely arranged, and distance is 30mm to 80mm between the two substrates 82, should not be too little, otherwise low-frequency effect is poor; Because of being subjected to the restriction of wellhole radial dimension also can not be too big.
The piezoelectric ceramics of transmitting transducer described in the utility model is WQ-2; The piezoelectric ceramics of described receiving transducer is WQ-1.The piezoelectric modulus height of these materials, the sensitivity that can improve transducer.
Monopole transmitting transducer 6 described in the utility model can adopt the structure of conventional monopole transmitting transducer.In the present embodiment, monopole transmitting transducer 6 is shown in Fig. 2 A, Fig. 2 B, Fig. 2 C, resistant to elevated temperatures negative wire 61, be welded on the outer wall silver layer of two pipes of being done by high temperature resistant transmitting piezoelectric ceramic WQ-2 material 661 and 662 with high temperature scolding tin respectively, positive wire 62 is welded in the inwall of pipe 661 and 662 respectively with high temperature scolding tin.These leads are that the silver-plated tinsel of multiply of outer cladding teflon constitutes.Be provided with through holes in the middle of the stainless steel mandrel 63, can be by other transducer power lead and signal wire.Stainless steel upper cover plate 64 has two positive and negative electrodes to go out line three-way hole at correspondence position, and the aperture respectively is 2--5mm.Three identical teflon insulation pad 65 thick 1.0mm--3.0mm, two need of termination are respectively cut a groove, as the path of negative wire.Two pipe 661,662 physical dimensions, piezoelectric property are identical, its high 10.0--50.0mm, and external diameter 50.0--70.0mm, wall thickness 2.0--5.0mm, pipe 661 and 662 parallel connections can reduce the raising of the favourable emissive power of impedance.Pipe 662 bottoms are provided with the lower cover 67 that stainless steel is manufactured; By nut 68 and mandrel 63 with ceramic pipe (661 and 662), cover plate 64 and 67, insulating mat 65 (three) are tightened as shown in the figure and are fixed together up and down, its mandrel 63 overlaps with the mandrel of skeleton shell 2, the axial two ends of one pole transmitting transducer want embedding to die within the skeleton shell 2, under the excitation of high voltage 4000V, the non-linear low frequency radial vibration of outstanding behaviours, the required one pole sound source of logging well just about its resonance frequency 8KH.Between mandrel 63 and the ceramic pipe 661,662 a teflon insulation mandrel 69 is arranged, its height and internal diameter are fixed by ceramic pipe 661,662 and stainless steel mandrel 63, and its wall thickness is between 3.0--10mm.The inner chamber of transducer is full of silicone oil, and inside and outside connection, pressure equilibrium.Sound window 12 external diameters are identical with skeleton shell 2, wall thickness 0.3--3.0mm, and length is slightly larger than the longitudinal size of transducer; Material is polyimide or titanium alloy.
Dipole transmitting transducer 7 described in the utility model can adopt the structure of conventional dipole transmitting transducer.In the present embodiment, dipole transmitting transducer 7 is shown in Fig. 3 A, Fig. 3 B, Fig. 3 C, and it is rectangle three laminate patches, and it is that a rectangle substrate 72 both sides connect two high temperature resistant transmitting piezoelectric ceramic WQ-2 square matrix 711,712; Utilize rectangle three laminate patch longitudinal bendings vibration to produce low-frequency acoustic signal, because square matrix 711 is opposite with respect to the polarised direction of axle core with 712 outsides, be square matrix 711 dispatch from foreign news agency very just, the dispatch from foreign news agency of square matrix 712 is very negative, and these two lateral electrodes are connected on the positive pole 73 of same excitation power supply, substrate 72 is connected on the negative pole 74 of excitation power supply, it and skeleton shell 2 are connected to ground wire, thus, be engraved in when a certain under the excitation of voltage square matrix 711 and 712 axially to the same side bending, thereby be the low frequency shear wave to extraradial sound wave.711,712 physical dimension 1.0--5.0mm are thick for the square matrix, and 50--150mm is long, and 25--75mm is wide, and performance is identical.Dipole transmitting transducer two ends respectively have one to be the stainless steel fixture block 75 of symmetry with skeleton shell 2 axle center, they are fixed on the skeleton shell 2 by four screws at four through hole correspondence positions at dipole transducer two ends respectively, and its size depends on the radial dimension of skeleton shell 2 and the length dimension of substrate 72.Substrate 72 is low-expansion alloy, and size is thick to be 0.5--5.0mm, long 100--200mm, wide 25--75mm.Be with resistant to elevated temperatures conducting resinl 76 bondings between pottery square matrix 711,712 and the substrate 72.Sound window 12 outside dimensions of dipole transmitting transducer are identical with skeleton shell 2, wall thickness 0.5--5.0mm, long 100--150mm.Its inner chamber is full of silicone oil.
Monopole receiving transducer 4 described in the utility model can adopt the structure of conventional monopole receiving transducer.In the present embodiment, monopole receiving transducer 4 is different with the monopole receiving transducer structure of existing multipole array acoustic log array energy transducer.Shown in Fig. 5 A, Fig. 5 B, it is to be in series by the pipe 411 and 412 that two same reception type high-temperature piezoelectric pottery WQ--1 materials are done, and its remolding sensitivity doubles with a pipe.The long 20--40mm of each ceramic pipe, external diameter 30--50mm, wall thickness 1.0--4.0mm.Positive signal lead-in wire 42, negative signal lead-in wire 43 after the series connection of two piezoelectric ceramic tubes also all are high temperature resistant wires, and its skin is by the polytetrafluoroethylene cladding, and heart yearn is that the silver-plated tinsel of multiply is formed.Each solder joint on ceramic pipe also all is to be welded with high temperature scolding tin.Stainless steel mandrel 44 its internal diameter 20--40mm of receiving transducer, wall thickness 2--5mm, the spiral shell button at two ends is for being connected to skeleton shell 2; Stainless steel cover plate 45 is used for backstop pipe 411,412; The internal diameter and the stainless steel mandrel 44 of polytetrafluoroethylene insulation mandrel 47 are slidingly matched wall thickness 2--8mm.Clamp nut 48 is used for fastening and the location; Three identical polytetrafluoroethylene insulating washers 46, pipe 411,412, insulation mandrel 47 and stainless steel mandrel 44 are put well in order, and welded each solder joint, clamp nut 48 is tightly twisted in stainless steel mandrel 44, making above-mentioned unit construction is one., wherein to open diameter be the 2--5mm aperture so that make negative wire 43 smooth and easy passing through in the position of the bottom insulating mat 46 corresponding ceramic pipe; In the position of stainless steel mandrel 44 and insulation mandrel 47 corresponding piezoelectric ceramic tubes, two apertures of Ge Kai up and down, diameter 2--5mm, the effect one in this hole is the path of signal conductor; The 2nd, interior exocoel turnover silicone oil plays the connection effect.
Further, the dipole receiving transducer 5 described in the utility model can adopt the structure of conventional dipole receiving transducer.In the present embodiment, dipole receiving transducer 5 is shown in Fig. 6 A, Fig. 6 B, Fig. 6 C, its core is three laminate patches of band cushion blocking, selects the series connection high impedance on its circuit, and utilizes its flexural vibrations to receive low frequency shear wave (echo of dipole emission transducer emission).Low-expansion alloy garden shape substrate 52 diameter 20--40mm, thick 0.3--1.0mm; The garden sheet of making by high temperature resistant piezoelectric ceramics WQ--1 material 511,512, its physical dimension is diameter 25--35mm, thickness is 0.3--1.0mm, with high-temperature electric conduction glue the negative pole face of garden sheet 511 and 512 is bonded in the center of substrate 52 between substrate and potsherd; In both sides, week edge, substrate 52 gardens, thick 0.5--1.0mm in the sulfuration, the fluororubber 53 of wide 3--5mm is as cushion blocking; Signal wire 54 and another signal wire 55 1 thereof of this receiving transducer are terminated at joint current, and their other end is welded in the center of two high-temperature piezoelectrics pottery WQ--1 slice, thin pieces respectively with high temperature scolding tin; Two stainless steel retainer rings 56, its outside dimension is decided by three laminate patch outside dimensions, and internal diameter size is decided by the internal diameter of fluororubber ring 57, near an end of three laminate patches, the outer height, interior along low, become wedge-like, the periphery wedge angle tightly is stuck in the fluorine rubber cushion, so more near simply-supported state, receiving sensitivity is improved.It is the hole of 5--8mm that two snap rings 56 respectively have two diameters, is the path of a plurality of receiving transducer signal wires; With 2 cores of skeleton shell is two spring collars 57 of symmetry, and its effect is the shaft core position that three laminate patches is anchored on skeleton shell 2 by two snap rings.Sound window 12 is located at the periphery of transducer; Transducer inside is full of silicone oil 58.
Because structure of the present utility model, five kinds of transducer group are fitted together, make three kinds of different different sound waves of transmitting transducer emission, and two kinds each eight to receive only signals that transducer array receives are multiple different physical processes such as reflection, refraction and absorption by different geologic structures, treated these signal differences can judge whether oil-containing, contain vapour and reserves thereof.Especially add its corresponding receiving transducer of Stoneley wave transducer in the utility model, therefore can utilize Stoneley wave speed and decay to ask for reservoir permeability.
Further, in the present embodiment, also can be provided with plural sound insulator 3 on the skeleton shell 2 and interconnect successively.Because this design feature, can be by fast, connected mode easily, distance between lengthening transmitting transducer and the receiving transducer to realize cement bond log, makes the allomeric function of this multipole array sonic log transducer obtain expansion.
Claims (11)
1. a multipole array sonic log transducer comprises cable, is connected in cable and vertically disposed skeleton shell, and skeleton shell is provided with sound insulator, and sound insulator top is the receiving area, and the bottom is an emitting area; The receiving area is provided with receiving circuit, monopole receiving transducer, dipole receiving transducer; Emitting area is provided with monopole transmitting transducer, dipole transmitting transducer, radiating circuit, it is characterized in that: also be provided with a Stoneley wave transmitting transducer at emitting area.
2. multipole array sonic log transducer as claimed in claim 1 is characterized in that: described transducer is provided with power lead and signal wire, and this power lead and signal wire are connected in cable, and cable is connected in aboveground acoustic logging instrument.
3. multipole array sonic log transducer as claimed in claim 1 is characterized in that: described monopole transmitting transducer is two; The dipole transmitting transducer is one; The monopole receiving transducer is eight; The dipole receiving transducer is eight.
4. multipole array sonic log transducer as claimed in claim 1 is characterized in that: the periphery of each transducer is provided with window.
5. multipole array sonic log transducer as claimed in claim 1 is characterized in that: described Stoneley wave transmitting transducer is made of two identical rectangle two laminate patches; Described two laminate patches are that high temperature resistant emission type piezoelectric ceramic piece is bonded on the substrate of low-expansion alloy; Parallel and the symmetrical skeleton shell axis of two rectangles, two laminate patches is fixed on the skeleton shell; Two piezoelectric ceramic pieces connect positive source, and two substrates connects power cathode.
6. multipole array sonic log transducer as claimed in claim 5 is characterized in that: the two substrates of described two rectangles, two laminate patches is oppositely arranged, and distance is 30mm to 80mm between the two substrates.
7. multipole array sonic log transducer as claimed in claim 6, it is characterized in that: substrate is provided with through hole, corresponding first fixture block and second fixture block of being provided with through hole in the substrate outside, a screw passes this second fixture block, first fixture block and through hole and is bolted on the skeleton shell.
8. multipole array sonic log transducer as claimed in claim 1 is characterized in that: described monopole receiving transducer is that two same high temperature resistant piezoelectric ceramic tubes are in series.
9. multipole array sonic log transducer as claimed in claim 1 is characterized in that: the piezoelectric ceramics of described transmitting transducer is WQ-2; The piezoelectric ceramics of described receiving transducer is WQ-1.
10. multipole array sonic log transducer as claimed in claim 1 is characterized in that: described sound insulator is the certain thickness hollow circular-tube of tool, and tube wall is provided with leads sound track, and its two ends are provided with joint.
11. as claim 1 or 10 described multipole array sonic log transducers, it is characterized in that: skeleton shell is provided with a sound insulator or is provided with plural sound insulator and interconnects successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03261891 CN2621300Y (en) | 2003-06-03 | 2003-06-03 | Multi-polar subarray acoustic logging transducer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03261891 CN2621300Y (en) | 2003-06-03 | 2003-06-03 | Multi-polar subarray acoustic logging transducer |
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| CN2621300Y true CN2621300Y (en) | 2004-06-23 |
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| CN 03261891 Expired - Fee Related CN2621300Y (en) | 2003-06-03 | 2003-06-03 | Multi-polar subarray acoustic logging transducer |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400679A (en) * | 2010-09-10 | 2012-04-04 | 北京锐致聪科技有限公司 | Tangential polarization monopole energy converter applicable to multi-level array sound wave well logging |
| CN102748013A (en) * | 2011-04-20 | 2012-10-24 | 中国科学院声学研究所 | Low-frequency dipole transmitting transducer |
| CN104314558A (en) * | 2014-08-21 | 2015-01-28 | 中国石油集团川庆钻探工程有限公司 | Method for judging reservoir effectiveness by Stoneley wave energy loss degree |
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| CN102748013A (en) * | 2011-04-20 | 2012-10-24 | 中国科学院声学研究所 | Low-frequency dipole transmitting transducer |
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| CN106481336A (en) * | 2016-10-31 | 2017-03-08 | 重庆博创声远科技有限公司 | Soic wave transmitting energy converter and its drill collar mounting structure |
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| CN109736780A (en) * | 2019-01-11 | 2019-05-10 | 中科云声(苏州)电子科技有限公司 | A kind of remote detection imaging of sound wave and evaluation system for the detection of offshore wind farm column foot |
| WO2020143187A1 (en) * | 2019-01-11 | 2020-07-16 | 中科云声(苏州)电子科技有限公司 | Far-field acoustic sensing and imaging and evaluation system for surveying offshore wind turbine tower foundation |
| CN109594977A (en) * | 2019-01-25 | 2019-04-09 | 中科云声(苏州)电子科技有限公司 | A kind of underground sonic system |
| CN111472753A (en) * | 2020-04-26 | 2020-07-31 | 中国石油天然气集团有限公司 | Dipole sound wave transmitting probe |
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