CN101392646A - Acoustic logging instrument of novel acoustic array structure - Google Patents
Acoustic logging instrument of novel acoustic array structure Download PDFInfo
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- CN101392646A CN101392646A CNA2008102245667A CN200810224566A CN101392646A CN 101392646 A CN101392646 A CN 101392646A CN A2008102245667 A CNA2008102245667 A CN A2008102245667A CN 200810224566 A CN200810224566 A CN 200810224566A CN 101392646 A CN101392646 A CN 101392646A
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Abstract
The invention discloses a novel acoustic logging instrument with a sonic system array structure, which comprises a pedestal. The pedestal comprises a receiving zone and a transmitting zone, wherein the receiving zone is provided with five receiving transducers at equal intervals in turn; and the transmitting zone is provided with a transmitting transducer and a high-voltage pulse excitation part which drives the transmitting transducer. The novel acoustic logging instrument adopts the structure of one transmitting transducer and five receiving transducers, greatly simplifies the structure of the instrument and reduces the manufacture cost; moreover, the transmitting transducer adopts a double-crystal parallel mechanism to improve the sound source incentive efficiency and signal receiving sensibility, and has higher measuring accuracy in slow formation. When the instrument is used to measure cementing quality, the receiving transducer closest to the transmitting transducer can complete CBL amplitude logging, and the receiving transducer farthest from the transmitting transducer can complete VDL full wave logging.
Description
Technical field
The present invention relates to oil field geologic exploration engineering field, relate in particular to a kind of acoustic logging instrument of novel acoustic array structure.
Background technology
Acoustic logging instrument is used to measure the oil well ring well week formation rock velocity of sound, i.e. acoustic wave of rock transmission speed in the oil field geologic exploration process.Data such as formation resistivity in conjunction with other measuring apparatus, natural gamma, formation rock density, stratum neutron voidage etc., can be to ring well week formation lithology, the formation rock voidage is carried out detailed assessment, has important effect in the Exploration Domain of oil address, is one of indispensable downhole instrument of conventional logging equipment.
The structure that extensively adopts has 22 receipts structures and 24 receipts structures at present.Patent application 200510043741.9 has disclosed a kind of 24 logging instrument sonic system structures of receiving, and its transmitter is made up of 2 transmitting transducers, and its reception area is made up of 4 receiving transducers.There is following defective in this structure:
1, sonic system is long, long sonic system can increase tool length, its defective have following some: one, for the needs that insulate against sound, need to carve the sound insulation groove on the acoustic logging instrument shell, so just reduced instrumental intensity, long sonic system is the lowering apparatus overall mechanical strength more, increases the insecurity of field operation, two, because logger is done the slam operation usually, multiple exactly instrument strings together finishes measurement together, is the integrality that guarantees to measure, need add the degree of depth of boring the instrument string length during drilling well, so that uppermost instrument also can measure the purpose stratum, therefore long tool length just needs darker drilling depth, increases drilling cost;
2, instrument control is complicated, because two emissions need be equipped with two cover emission circuit systems for it, has increased supporting Circuit Design difficulty, has reduced reliability, and introduce more noise sources in signal acquiring system;
3, two transmitting transducers can not be launched simultaneously, and 50 milliseconds at interval of interval times make that CBL measures and the VDL measurement can not be accurately in same depth point in the cementing quality logging operation.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of acoustic logging instrument of novel acoustic array structure, this logger not only can satisfy the CBL measurement and VDL measures accurately on same depth point, and simplified apparatus structure, measure reliability and receive higher than 24.
In order to address the above problem, the invention provides a kind of acoustic logging instrument of novel acoustic array structure, comprise: pedestal, this pedestal comprises reception area and launch site, equidistantly be arranged with 5 receiving transducers successively at reception area, be provided with 1 transmitting transducer in the launch site, also be provided with the high-voltage pulse excitation portion that drives described transmitting transducer in described launch site.
Preferably, between described receiving transducer, also be provided with the sound insulation ring that is used to stop along the sound wave direct wave of sonic system propagation.
Preferably, described sound insulation ring is by fluorubber, polytetrafluoroethylene (PTFE), and the big materials of velocity of sound parameter difference such as lead are made.
Preferably, described receiving transducer and transmitting transducer are composed in parallel by two ring piezoelectric potteries.
The present invention has following advantage:
1, adopts 15 structure of receiving, simplified the structure of instrument greatly, reduced manufacturing cost;
2, this instruments design can be used for the cementing quality measurement in addition;
3, transmitting transducer and receiving transducer adopt the bicrystal parallel institution, have improved the receiving sensitivity of the sound field intensity and the receiving transducer of transmitting transducer greatly.Adopt array received transducer arrangement architecture, can in one-shot measurement, finish repeatedly duplicate measurements is carried out on the same purpose of open hole well stratum, improved formation rock acoustic velocity measutement precision;
4, sound insulation ring is set and has also played abundant prevention and directly arrive the acoustic signals of receiving transducer along instrument between receiving transducer, therefore also improved the accuracy of the sensitivity and the measurement of receiving transducer by transmitting transducer.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation after the present invention sealing;
Fig. 3 installs structural representation behind the shell for the present invention;
Fig. 4 time difference measurement schematic diagram;
Fig. 5 cementing quality instrumentation plan.
The specific embodiment
As described in Figure 1, the present invention includes: pedestal 1, pedestal 1 is made by the epoxide resin material round mandrel, this pedestal 1 comprises reception area 2 and launch site 3, equidistantly be arranged with 5 receiving transducer R1, R2, R3, R4, R5 successively at reception area 2, be provided with 1 transmitting transducer T in the launch site, 3 also are provided with the high-voltage pulse excitation portion 4 that drives transmitting transducer T in the launch site.
Receiving transducer R1, R2, R3, R4, R5 and transmitting transducer T all adopt two ring piezoelectric potteries to compose in parallel, receiving transducer band R1, R2, R3, R4, R5 are wide is 0-23KHZ, receiving transducer R1, R2, R3, R4, R5 equidistantly arrange, spacing is 6 inches, adopts the sound insulation ring of being made by annular sound insulating material 5 to connect between adjacent reception transducer R1, R2, R3, R4, R5 change.Sound insulating material is intersected to place by several annular materials with big velocity of sound gap to be formed, to form bigger acoustic impedance between two receiving transducers, the sound wave direct wave that prevention is propagated along sonic system (direct wave belong to directly arrive the acoustic signals of receiving transducer, this signal does not comprise any formation information) along instrument by transmitting transducer.Sound insulating material can adopt the big materials of velocity of sound parameter difference such as fluorubber, polytetrafluoroethylene (PTFE) or lead.Excitation portion 4 is step-up transformers, is 425V in order to the amplitude with input, and width is that the electric impulse signal of 25 microseconds rises to 4000V amplitude high-voltage pulse, and this signal is used to drive transmitting transducer T.Transmission center frequency values is 16KHZ, and Optimum Excitation voltage is 4000V.Transmitting transducer T is 3 feet to the spacing with the immediate receiving transducer RI of transmitting transducer T.
Above-mentioned sonic system partly need be sealed in the system that is full of silicone oil fully, to adapt to the oil well high temperature and high pressure environment.Wherein, the coupling part between receiving transducer RI, R2, R3, R4, R5, sound insulation ring 5 and receiving transducer R1 and the transmitting transducer T seals with rubbery human body 6, and two ends are fixed with the metallic seal cassette tape.The velocity of sound of rubbery human body 6 and the velocity of sound of silicone oil will be tried one's best near the effective transmission that is beneficial to sound wave.Transmitting transducer T will be far smaller than the wavelength of transmitting transducer centre frequency with ring shaped metallic seal sound window 7 and extraneous isolation the, sound window wall thickness, so then helps sound-source signal maximum penetration sound window and enters the stratum.Structure after the sealing such as Fig. 2.
At last, the sonic system assembly of good seal is packed in the circular metal shell 8, as shown in Figure 3, vertical fluting 9 is carved with in corresponding receiving transducer R1, R2, R3, R4, R5 and transmitting transducer T position, in order to transmit acoustic signals, other parts are carved with laterally thin fluting 10, in order to isolate direct wave.
Be the measuring process explanation below.
1. velocity of sound time difference measurement
As shown in Figure 4, transmitting transducer T encourages an emission sound field around it, and acoustic signals is through the stratum slide wave of stratum 11 refraction back formation along the borehole wall.By the comparison of wave shape analysis to the receiving transducer that arrives diverse location, we can be in the hope of being positioned at the receiver stratum compressional wave time difference on stratum separately.We adopt transmitting transducer T as emission sound source when carrying out time difference measurement, the stratum acoustic signals on receiving transducer R1, R2, R3, the R4, and R5 does not participate in measuring this moment.
2. cementing quality is measured
As shown in Figure 5, need finish two measuring processes, one is that three feet spacing CBL sound width of cloth are measured, and two is that five feet spacing VDL all-waves are measured.When this instrument was used for the cementing quality measurement, receiving transducer R1 can finish CBL and measure, and receiving transducer R5 can finish VDL and measure.Receiving transducer R2, R3, R4 do not participate in cementing quality and measure.12 expression sleeve pipes among the figure, 13 expression cement layers.
The Sonic Digital Tool of the present invention's development is mainly finished the measurement of sound wave compressional wave time difference, and transmitting transducer T encourages an emission sound field around it, and acoustic signals is through the stratum slide wave of stratum refraction back formation along the borehole wall.By comparison of wave shape analysis to the receiving transducer R1, the R2 that arrive diverse location, R3, R4, R5, can be in the hope of being positioned at the receiving transducer stratum compressional wave time difference parameter on stratum separately.This instrument adopts the array received structure design, single-shot is overcharged, probe spacing dwindles, and can obtain a plurality of Wave datas in same depth point and adopt the Mintrop wave extraction to ask for the interval transit time data with the processing method that relevant contrast combines, and has higher measuring accuracy and vertical resolution.
In sum; being preferred embodiment of the present invention only below, is not to be used to limit protection scope of the present invention, therefore; all any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1, a kind of acoustic logging instrument of novel acoustic array structure, comprise: pedestal, this pedestal comprises reception area and launch site, it is characterized in that, equidistantly be arranged with 5 receiving transducers successively at reception area, be provided with 1 transmitting transducer in the launch site, also be provided with the high-voltage pulse excitation portion that drives described transmitting transducer in described launch site.
2, logger as claimed in claim 1 is characterized in that, also is provided with the sound insulation ring that is used to stop along the sound wave direct wave of sonic system propagation between described receiving transducer.
Logger as claimed in claim 2 is characterized in that, preferably, described sound insulation ring is made by big materials of velocity of sound parameter difference such as fluorubber, polytetrafluoroethylene (PTFE) or lead.
As the arbitrary described logger of claim 1 to 3, it is characterized in that 3, described transmitting transducer and receiving transducer are composed in parallel by two ring piezoelectric potteries respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102245667A CN101392646A (en) | 2008-10-21 | 2008-10-21 | Acoustic logging instrument of novel acoustic array structure |
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|---|---|---|---|
| CNA2008102245667A CN101392646A (en) | 2008-10-21 | 2008-10-21 | Acoustic logging instrument of novel acoustic array structure |
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| CN101392646A true CN101392646A (en) | 2009-03-25 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042003A (en) * | 2009-10-12 | 2011-05-04 | 西安威尔罗根能源科技有限公司 | Digital sound wave and variable-density comprehensive logging instrument |
| CN102686828A (en) * | 2009-12-30 | 2012-09-19 | 瓦伊德·拉希德 | Look ahead advance formation evaluation tool |
| CN102900425A (en) * | 2012-10-29 | 2013-01-30 | 中国石油大学(华东) | New method for monitoring shale gas well fractures |
| CN103364052A (en) * | 2013-07-08 | 2013-10-23 | 雅砻江流域水电开发有限公司 | Method for monitoring sediment quantity by acoustic waves |
| CN104234705A (en) * | 2013-06-13 | 2014-12-24 | 中国石油集团长城钻探工程有限公司 | Shock absorption and noise reduction structure for sonic logging tool |
| CN104453846A (en) * | 2013-09-13 | 2015-03-25 | 中国石油集团长城钻探工程有限公司 | Composite transmission nipple of sonic logging tool |
| CN106094036A (en) * | 2016-07-16 | 2016-11-09 | 北京捷威思特科技有限公司 | Piezoelectric type vertical seismic logging instrument and logging method |
| CN107143333A (en) * | 2017-07-12 | 2017-09-08 | 黄河勘测规划设计有限公司 | Acoustic isolater for hydraulic engineering full wave train acustic logging inserting tube |
| US10294772B2 (en) | 2014-04-22 | 2019-05-21 | Halliburton Energy Services, Inc. | Circumferential array borehole evaluation tool |
| CN112065365A (en) * | 2020-08-10 | 2020-12-11 | 中国海洋石油集团有限公司 | Well-cementing quality logging device while drilling and well-cementing quality evaluation method |
| CN114063145A (en) * | 2021-11-15 | 2022-02-18 | 上海海事大学 | Periodic linear array device for underwater acoustic emission and sensor |
| CN115615534A (en) * | 2022-12-16 | 2023-01-17 | 中海油田服务股份有限公司 | Liquid-filled probe rod and measuring device for measuring in-situ sound velocity of submarine sediment |
-
2008
- 2008-10-21 CN CNA2008102245667A patent/CN101392646A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042003A (en) * | 2009-10-12 | 2011-05-04 | 西安威尔罗根能源科技有限公司 | Digital sound wave and variable-density comprehensive logging instrument |
| CN102686828A (en) * | 2009-12-30 | 2012-09-19 | 瓦伊德·拉希德 | Look ahead advance formation evaluation tool |
| CN102686828B (en) * | 2009-12-30 | 2015-11-25 | 瓦伊德·拉希德 | Predict formation evaluation tool in advance |
| CN102900425A (en) * | 2012-10-29 | 2013-01-30 | 中国石油大学(华东) | New method for monitoring shale gas well fractures |
| CN104234705A (en) * | 2013-06-13 | 2014-12-24 | 中国石油集团长城钻探工程有限公司 | Shock absorption and noise reduction structure for sonic logging tool |
| CN103364052A (en) * | 2013-07-08 | 2013-10-23 | 雅砻江流域水电开发有限公司 | Method for monitoring sediment quantity by acoustic waves |
| CN103364052B (en) * | 2013-07-08 | 2016-02-17 | 雅砻江流域水电开发有限公司 | Sound wave type collection quantity of slag monitoring method |
| CN104453846A (en) * | 2013-09-13 | 2015-03-25 | 中国石油集团长城钻探工程有限公司 | Composite transmission nipple of sonic logging tool |
| CN104453846B (en) * | 2013-09-13 | 2024-02-02 | 中国石油集团长城钻探工程有限公司 | Composite transmitting nipple of acoustic logging instrument |
| US10294772B2 (en) | 2014-04-22 | 2019-05-21 | Halliburton Energy Services, Inc. | Circumferential array borehole evaluation tool |
| CN106094036A (en) * | 2016-07-16 | 2016-11-09 | 北京捷威思特科技有限公司 | Piezoelectric type vertical seismic logging instrument and logging method |
| CN107143333A (en) * | 2017-07-12 | 2017-09-08 | 黄河勘测规划设计有限公司 | Acoustic isolater for hydraulic engineering full wave train acustic logging inserting tube |
| CN112065365A (en) * | 2020-08-10 | 2020-12-11 | 中国海洋石油集团有限公司 | Well-cementing quality logging device while drilling and well-cementing quality evaluation method |
| CN112065365B (en) * | 2020-08-10 | 2022-04-08 | 中国海洋石油集团有限公司 | Well-cementing quality logging device while drilling and well-cementing quality evaluation method |
| CN114063145A (en) * | 2021-11-15 | 2022-02-18 | 上海海事大学 | Periodic linear array device for underwater acoustic emission and sensor |
| CN114063145B (en) * | 2021-11-15 | 2023-11-24 | 上海海事大学 | Periodic linear array device of underwater sound emission and sensor |
| CN115615534A (en) * | 2022-12-16 | 2023-01-17 | 中海油田服务股份有限公司 | Liquid-filled probe rod and measuring device for measuring in-situ sound velocity of submarine sediment |
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Application publication date: 20090325 |