CN201412141Y - Array acoustic well logger - Google Patents
Array acoustic well logger Download PDFInfo
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- CN201412141Y CN201412141Y CN2009201582748U CN200920158274U CN201412141Y CN 201412141 Y CN201412141 Y CN 201412141Y CN 2009201582748 U CN2009201582748 U CN 2009201582748U CN 200920158274 U CN200920158274 U CN 200920158274U CN 201412141 Y CN201412141 Y CN 201412141Y
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Abstract
The utility model discloses an array acoustic well logger, including a sonic system and an electronic line. The sonic system further comprises an acoustic isolator, a sound save receiving crystal array, an upper sound wave emission crystal array, a lower sound wave emission crystal array, a rubber bladder and a sound wave housing. The sound wave receiving crystal is positioned between the upper sound wave emission crystal and the lower sound wave emission crystal array. The sound wave receiving crystal, the upper sound wave emission crystal array and the lower sound wave emission crystal arrayare arranged in the acoustic isolator. The rubber bladder surrounds outside the acoustic isolator and is filled with silicone oil. The sound wave housing encloses outside the rubber bladder. The sound wave receiving array comprises 2-20 sound wave receiving crystals arranged according to the fixed spacing; the upper sound wave emission crystal array includes 1-4 sound wave emission crystals and the lower sound wave emission crystal array includes 1-4 sound wave emission crystals. The technical scheme adopting the utility model not only raises the precision of the acoustic well logger, and simultaneously measures the sound wave time difference with different resolving power.
Description
Technical field
The utility model relates to the geological exploration techniques field, relates in particular to a kind of array sonic log instrument.
Background technology
Acoustic logging is a kind of important conventional logging method, after oil field, coal driling finishing drilling, measures drilling well ring well stratum acoustic wave of rock speed on every side usually.If cooperate with other logging methods, but detailed assessment wellbore formation rock matrix lithology and formation rock degree of porosity.The sonic system structure of the acoustic logging that use on the reality border has 22 receipts, 15 receipts (4 receive) and 24 receipts etc.
22 receipts are a kind of traditional sonic system structures, by two receiving crystal spacings be about 50CM, each transmitting crystal is formed up and down, the sonic system structure is simpler, certainty of measurement is not high, its resolution ratio is low.
The architecture defective that quiets down for 24 is that sonic system is relatively poor, and cost increases, and instrument is long need to increase drilling depth again, otherwise the well logging test leakage increases.
15 architecture that quiets down, one of them receiving crystal are used for the sound wave cementing quality and detect, and are equivalent to 14 architecture that quiets down for the open hole well acoustic logging, owing to have only a transmitting crystal, do not have borehole compensation, the interval transit time measured value is subjected to wellbore effect bigger, and certainty of measurement is not high yet.At present need really to propose that a kind of volume is relatively little, Measurement Resolution is high and the acoustical well-logging devices of wide accommodation.
The utility model content
The purpose of this utility model is to propose a kind of array sonic log instrument, can measure the high accuracy interval transit time of obtaining four kinds of different resolutions in the pit shaft simultaneously.
For reaching this purpose, the utility model by the following technical solutions:
A kind of array sonic log instrument, comprise sonic system and electronic circuit, it is characterized in that, described sonic system comprises acoustic isolater, sound wave receiving crystal array, last sound wave emissions crystal array, following sound wave emissions crystal array, rubbery human body and sound wave shell, described sound wave receiving crystal array is sound wave emissions crystal array and described down between the sound wave emissions crystal array on described, described sound wave receiving crystal array, last sound wave emissions crystal array and following sound wave emissions crystal array are positioned at described acoustic isolater, described rubbery human body is enclosed in described acoustic isolater outside, wherein be full of silicone oil, described sound wave shell is enclosed in described rubbery human body outside, wherein sound wave receiving crystal array comprises 2 to 20 according to the tactic sound wave receiving crystal of constant spacing, the described sound wave emissions crystal array of going up comprises 1 to 4 sound wave emissions crystal, and following sound wave emissions crystal array comprises 1 to 4 sound wave emissions crystal.
Both can equidistantly arrange between the described sound wave receiving crystal, but also unequal-interval is arranged, spacing range is 6CM to 30CM.
The described distance range of going up any two adjacent crystals in sound wave emissions crystal or the following sound wave emissions crystal is 0 to 20CM, and two transmitting crystals can be in the complete overlapping placement of same position.
The described tranmitting frequency that goes up sound wave emissions crystal or following sound wave emissions crystal is 1KHZ to 1MHZ, and each transmitting crystal can adopt same transmit frequency timesharing emission, also can adopt different tranmitting frequencies whiles or timesharing emission.
Distance between the uppermost sound wave receiving crystal in the described upward sound wave emissions crystal array in nethermost sound wave emissions crystal and the described sound wave receiving crystal array is spacing L1, distance between the nethermost sound wave receiving crystal in the described sound wave emissions crystal array down in uppermost sound wave emissions crystal and the described sound wave receiving crystal array is spacing L2, the scope of spacing L1 and spacing L2 is 6CM to 120CM, spacing L1 and spacing L2 are equal usually, also can be unequal.
The described sound wave emissions crystal and the described sound wave receiving crystal of the corresponding sonic system of described sound wave shell are carved with vertical fluting, are used to make things convenient for transmitting and receiving of sound wave, realize undamped partition; Laterally thin fluting is carved with on all the other corresponding sound wave shell steel body tops of sonic system part, is used to cut off the useless direct wave acoustic signals of decay.
Described electronic circuit also comprises power supply, emission control, reception amplification, filtering, signals collecting and the calculating of the computer time difference and output interface, tool housing.
Adopted the technical solution of the utility model, not only improved the precision of acoustic logging, and can measure four kinds of different resolution interval transit times simultaneously, also the place is little greatly for sonic system and tool length.
Description of drawings
Fig. 1 is 2 10 of the utility model embodiment architecture schematic diagram that quiets down.
Fig. 2 is the schematic diagram after 2 10 of the utility model embodiment receive the installation shell.
Fig. 3 is 4 10 of the utility model embodiment architecture schematic diagram that quiets down.
Fig. 4 is a sonic system structural representation in the utility model specific embodiment.
The specific embodiment
Further specify the technical solution of the utility model below in conjunction with accompanying drawing and by the specific embodiment.
Array sonic log instrument in the utility model specific embodiment, comprise sonic system and electronic circuit two parts, the utility model has been broken through traditional acoustic logging sonic system structure, and sound wave has partly been carried out abundant improvement, has proposed a kind of brand-new high resolution ratio array acoustic logging instrument.
Fig. 1 is 2 10 of the utility model embodiment architecture schematic diagram that quiets down.As shown in Figure 1, comprise sonic system 101, electronic circuit 102, the sonic system part further comprises following sound wave emissions crystal 103, sound wave receiving crystal array 104, goes up sound wave emissions crystal 105, acoustic isolater 106, sound wave receiving crystal array comprises 10 sound wave receiving crystals of equidistantly arranging, spacing L1=L2=24CM wherein, spacing H=12CM.
Fig. 2 is the schematic diagram after 2 10 of the utility model embodiment receive the installation shell.As shown in Figure 2, all transmitting crystals of the corresponding sonic system of its urceolus of acoustic isolater, receiving crystal all is carved with vertical fluting, so that undamped partition, all the other sonic system parts are passed through in sound wave emissions and reception smoothly, laterally thin fluting is carved with on steel body top, is used for cutting off the useless direct wave acoustic signals of decay.
Fig. 3 is 4 10 of the utility model embodiment architecture schematic diagram that quiets down.As shown in Figure 3, comprise sonic system 301, electronic circuit 302, the sonic system part further comprises sound wave emissions crystal array 303 down, sound wave receiving crystal array 304, last sound wave emissions crystal array 305, acoustic isolater 306, following sound wave emissions crystal array comprises 2 sound wave emissions crystal, sound wave receiving crystal array comprises 10 sound wave receiving crystals of equidistantly arranging, last sound wave emissions crystal array comprises 2 sound wave emissions crystal, spacing L1=L2=24CM wherein, L3=L4=6CM, spacing H=12CM, 2 emission 20KHZ frequencies in 4 transmitting probes, launch the 15KHZ frequencies for 2 in addition, two kinds of frequencies can while or timesharing pattern radiation pattern.
Fig. 4 is a sonic system structural representation in the utility model specific embodiment.As shown in Figure 4, comprise sonic system 401, electronic circuit 402, the sonic system part further comprises following sound wave emissions crystal array 403, sound wave receiving crystal array 404, goes up sound wave emissions crystal array 405, acoustic isolater 406, following sound wave emissions crystal array comprises 4 sound wave emissions crystal, sound wave receiving crystal array comprises 20 sound wave receiving crystals of equidistantly arranging, last sound wave emissions crystal array comprises 4 sound wave emissions crystal, wherein L is 0-20CM, H is 6-30CM, L1:6-120CM, L2:6-120CM.
Sonic system partly comprises acoustic isolater, sound wave receiving crystal array, last sound wave emissions crystal array, following sound wave emissions crystal array, rubbery human body and sound wave shell, sound wave receiving crystal array is between last sound wave emissions crystal array and following sound wave emissions crystal array, sound wave receiving crystal array, last sound wave emissions crystal array and following sound wave emissions crystal array are positioned at acoustic isolater, sonic system partly seals and puts rubbery human body and is full of silicone oil again, the acoustic wave apparatus sonic system metal outer cylinder of at last the sonic system assembly of good seal being packed into.Wherein, sound wave receiving crystal and sound wave emissions crystal can adopt two annular electro potteries to compose in parallel, and the frequency of sound wave bandwidth of sound wave receiving crystal R is 0 to 25KHZ, the centre frequency F=20KHZ of transmitting probe T1, T2 emission sound wave.
Usually also the distance between the uppermost receiving crystal in nethermost transmitting crystal and the receiving array crystal array in the last sound wave emissions crystal array is decided to be spacing L1, descending to launch the uppermost transmitting crystal of crystal array and accepting that the nethermost distance of accepting between the crystal is decided to be spacing L2 in the crystal array.
Instrument electronic circuit part is finished sound wave emissions control usually, and the acoustic signals that receives is amplified, high-speed AD acquisition, and calculate, with data by transferring to the ground instrument, also acoustic signals can be amplified, directly with analog signal transmission to the ground instrument, calculate interval transit time by the ground instrument.
In the implementation process, instrument of the present invention is placed in the pit shaft, control sound wave transmitting crystal array is up and down launched sound wave successively, partly produce the stratum slide wave according to sound wave principle acoustic signals through well mud, arrive the receiving crystal zone, have part to satisfy returning of acoustics refraction condition again and be received crystal in the pit shaft just and accept by the certain angle refraction along the well arm, amplify through electronic circuit, filtering, single-chip microcomputer is sent in the high-speed AD sampling, can ask for interval transit time.Owing to be array emission and array received, therefore, use degree of depth passing principle of stacking and can conveniently ask for 4 kinds of high-precision 12CM high-resolution interval transit times, 24CM high-resolution interval transit time, 36CM intermediate-resolution interval transit time, 48CM low resolution interval transit time.Once go into the well and to ask for the high accuracy interval transit time of above four kinds of different resolutions simultaneously.
Adopt above-mentioned high resolution ratio array sonic system structure, possessed following multifrequency nature:
Can measure 4 kinds of different resolution stratum simultaneously. interval transit time.Comprise 12CM high-resolution interval transit time, 24CM high-resolution interval transit time, 36CM intermediate-resolution interval transit time and 48CM low resolution interval transit time.
Possess high accuracy, owing to adopt the array emission, array received can measure the stratum interval transit time of a plurality of arrays, uses the degree of depth and passes, and array probe is to the repeatedly array measurement of same stratum, and the time difference is principle of stacking repeatedly, possesses high accuracy.Wherein quieting down for 4 10 is owing to adopt two kinds of tranmitting frequencies simultaneously or the timesharing emission, thereby can obtain 4 kinds of high-resolution interval transit times under two kinds of frequencies again, can also superpose once more, possesses more high accuracy.
Break through traditional sonic system structure, minimum spacing L1=L2=24CM compares traditional spacing L 〉=80CM, has dwindled sonic system and tool length greatly.
The above; it only is the preferable specific embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with the people of this technology in the disclosed technical scope of the utility model; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (7)
1, a kind of array sonic log instrument, comprise sonic system and electronic circuit, it is characterized in that, described sonic system comprises acoustic isolater, sound wave receiving crystal array, last sound wave emissions crystal array, following sound wave emissions crystal array, rubbery human body and sound wave shell, described sound wave receiving crystal array is sound wave emissions crystal array and described down between the sound wave emissions crystal array on described, described sound wave receiving crystal array, last sound wave emissions crystal array and following sound wave emissions crystal array are positioned at described acoustic isolater, described rubbery human body is enclosed in described acoustic isolater outside, wherein be full of silicone oil, described sound wave shell is enclosed in described rubbery human body outside, wherein sound wave receiving crystal array comprises 2 to 20 according to the tactic sound wave receiving crystal of constant spacing, the described sound wave emissions crystal array of going up comprises 1 to 4 sound wave emissions crystal, and following sound wave emissions crystal array comprises 1 to 4 sound wave emissions crystal.
2, a kind of array sonic log instrument according to claim 1 is characterized in that, both can equidistantly arrange between the described sound wave receiving crystal, but also unequal-interval is arranged, and spacing range is 6CM to 30CM.
3, a kind of array sonic log instrument according to claim 1, it is characterized in that, the described distance range of going up any two adjacent crystals in sound wave emissions crystal or the following sound wave emissions crystal is 0 to 20CM, and two transmitting crystals can be in the complete overlapping placement of same position.
4, according to claim 1 or 3 described a kind of array sonic log instrument, it is characterized in that, the described tranmitting frequency that goes up sound wave emissions crystal or following sound wave emissions crystal is 1KHZ to 1MHZ, each transmitting crystal can adopt same transmit frequency timesharing emission, also can adopt different tranmitting frequencies whiles or timesharing emission.
5, a kind of array sonic log instrument according to claim 1, it is characterized in that, distance between the uppermost sound wave receiving crystal in the described upward sound wave emissions crystal array in nethermost sound wave emissions crystal and the described sound wave receiving crystal array is spacing L1, distance between the nethermost sound wave receiving crystal in the described sound wave emissions crystal array down in uppermost sound wave emissions crystal and the described sound wave receiving crystal array is spacing L2, the scope of spacing L1 and spacing L2 is 6CM to 120CM, spacing L1 and spacing L2 are equal usually, also can be unequal.
6, a kind of array sonic log instrument according to claim 1, it is characterized in that, the described sound wave emissions crystal and the described sound wave receiving crystal of the corresponding sonic system of described sound wave shell are carved with vertical fluting, are used to make things convenient for transmitting and receiving of sound wave, realize undamped partition; Laterally thin fluting is carved with on all the other corresponding sound wave shell steel body tops of sonic system part, is used to cut off the useless direct wave acoustic signals of decay.
7, a kind of array sonic log instrument according to claim 1 is characterized in that, described electronic circuit also comprises power supply, emission control, reception amplification, filtering, signals collecting and the calculating of the computer time difference and output interface, tool housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201582748U CN201412141Y (en) | 2009-06-09 | 2009-06-09 | Array acoustic well logger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201582748U CN201412141Y (en) | 2009-06-09 | 2009-06-09 | Array acoustic well logger |
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| CN201412141Y true CN201412141Y (en) | 2010-02-24 |
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| CN2009201582748U Expired - Fee Related CN201412141Y (en) | 2009-06-09 | 2009-06-09 | Array acoustic well logger |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858210A (en) * | 2010-06-21 | 2010-10-13 | 中国海洋石油总公司 | Simulated test device for acoustic logging instrument |
| CN101975820A (en) * | 2010-09-27 | 2011-02-16 | 国家海洋局第一海洋研究所 | Submarine sediment acoustic parameter in-situ measuring device |
| CN104594878A (en) * | 2014-11-20 | 2015-05-06 | 中国石油大学(华东) | Double-source flyback through-casing acoustic logging method and device |
-
2009
- 2009-06-09 CN CN2009201582748U patent/CN201412141Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858210A (en) * | 2010-06-21 | 2010-10-13 | 中国海洋石油总公司 | Simulated test device for acoustic logging instrument |
| CN101858210B (en) * | 2010-06-21 | 2013-05-15 | 中国海洋石油总公司 | Simulated test device for acoustic logging instrument |
| CN101975820A (en) * | 2010-09-27 | 2011-02-16 | 国家海洋局第一海洋研究所 | Submarine sediment acoustic parameter in-situ measuring device |
| CN104594878A (en) * | 2014-11-20 | 2015-05-06 | 中国石油大学(华东) | Double-source flyback through-casing acoustic logging method and device |
| CN104594878B (en) * | 2014-11-20 | 2017-05-10 | 中国石油大学(华东) | Double-source flyback through-casing acoustic logging method and device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100224 Termination date: 20170609 |
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| CF01 | Termination of patent right due to non-payment of annual fee |