CN102042003A - Digital sound wave and variable-density comprehensive logging instrument - Google Patents
Digital sound wave and variable-density comprehensive logging instrument Download PDFInfo
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- CN102042003A CN102042003A CN2009100242620A CN200910024262A CN102042003A CN 102042003 A CN102042003 A CN 102042003A CN 2009100242620 A CN2009100242620 A CN 2009100242620A CN 200910024262 A CN200910024262 A CN 200910024262A CN 102042003 A CN102042003 A CN 102042003A
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Abstract
The invention relates to a digital sound wave and variable-density comprehensive logging instrument, which can be used for logging by using a sound-wave time difference method and also for logging cementing quality. The digital sound wave and variable-density comprehensive logging instrument comprises a main controller in a sound-wave electronic instrument and is characterized by comprising two emitting crystals, and four receiving crystals are arranged below the emitting crystals, wherein the space between the emitting crystals is 15mm, and a sound insulator is arranged between the emitting crystals. The space between every two receiving probes is respectively 8 inches, the distance from the first receiving crystal to the emitting crystals is 3 feet, and the distance from the fourth receiving crystal to the emitting crystals is 5 feet. The emitting crystals and the receiving crystals are packaged with leather bags and are filled with silicone oil.
Description
One, technical field:
The present invention relates to the well logging apparatus of a kind of petroleum geology exploration and natural gas exploration, especially relate to a kind of digital sound wave and variable density comprehensive logging instrument.
Two, background technology:
In the background technology, in the oil reservoir logging technology, acoustic travel time logging is to occupy very consequence in the oil exploration at present.Acoustic logging, particularly in open hole well, acoustic logging instrument is used for measuring the acoustic wave character of wellbore medium.Can divide lithology, judge gas-bearing formation, determine the bottom degree of porosity and estimate Abnormal Formation Pressure.The main measuring unit tube wave of variable density log, cement sheath ripple and formation wave.Research casing cementing quality is measured under different cementing quality situations by the acoustic characteristic of glued sleeve pipe, and the changes in amplitude of casing wave and formation wave has certain rules.
The sonic system structure of initial acoustic logging instrument is the structure that the single-shot list is received, and just writes down Mintrop wave amplitude then, is used for calculating formation porosity and estimates the outer Cementation Quality of sleeve pipe.Developed into compensation sound wave and two two ripple logging instruments that quiet down afterwards, spacing, spacing are fixed, and have to be subjected to wellbore effect bigger problems such as longitudinal resolution rate variance.
Three, summary of the invention:
The present invention provides a kind of digital sound wave and variable density comprehensive logging instrument in order to solve the weak point in the above-mentioned background technology, and it both can carry out the well logging of interval transit time method, can log well to cementing quality again.
For achieving the above object, the technical solution used in the present invention is:
A kind of digital sound wave and variable density comprehensive logging instrument comprise the main controller in the sound wave electronics, it is characterized in that: comprise two transmitting crystals, the transmitting crystal below is four receiving crystals.
Above-mentioned transmitting crystal spacing is 15 millimeters, and the centre is an acoustic isolater.
The spacing of above-mentioned receiving transducer is respectively 8 inches, and first receiving crystal is 3 feet according to the distance of transmitting crystal, and the 4th receiving crystal is 5 feet apart from the distance of transmitting crystal.
Above-mentioned transmitting crystal and receiving crystal are packed by leather bag, and are full of by silicone oil.
Above-mentioned transmitting crystal is 12 strip piezoelectric ceramics, and receiving crystal is 8 strip piezoelectric ceramics.
Compared with prior art, the advantage and the effect that have of the present invention is as follows:
1, traditional instrument separates, or acoustic logging instrument, or the variable density log instrument;
When 2, logging well, when needing test sound wave acoustic logging instrument to be installed at every turn, when needing to survey variable density the variable density log instrument will be installed, change cumbersome.
3, this logging instrument combines acoustic logging instrument and variable density log instrument, and is easy to use, easy for installation;
4, any change that it goes without doing on the hardware design of circuit is just done certain change with the program of main controller, and sonic system also it goes without doing any change makes this equipment can survey sound wave simultaneously and also can survey variable density.
Four, description of drawings:
Fig. 1 is the structural representation of acoustic logging state of the present invention;
Fig. 2 is the structural representation of variable density log state of the present invention.
Among the figure, 1-transmitting crystal, 2-receiving crystal, 3-acoustic isolater.
Five, the specific embodiment:
Referring to Fig. 1 and Fig. 2, the present invention is a kind of novel array numeral sound wave and the comprehensive instrument of variable density log, sonic system is that energy collecting type single-shot four is received structure, radiating portion is made up of 2 transmitting crystals 1, interval 15mm, and the centre is an acoustic isolater 3, the bottom is 4 receiving crystals 2, spacing is respectively 8 inches, and first receiving crystal is 3 feet apart from the distance of transmitting crystal, and the 4th receiving crystal is 5 feet apart from the distance of transmitting crystal.Transmitting crystal and receiving crystal whole system are all wired up by leather bag, and irritate silicone oil and be full of, and have both protected the component in the leather bag, make the sound wave model well to be coupled again.Wherein, transmitting crystal 1 is 12 strip piezoelectric ceramics, and receiving crystal 2 is 8 strip piezoelectric ceramics.Logging instrument of the present invention both can carry out acoustic logging, adopt single-shot four to receive, be sent to ground system simultaneously after the Data Digital that 4 receiving crystals 2 are received, simultaneously, this system can also carry out cementing quality well logging (variable density log), mainly measures 3 feet and 5 feet VDL and the test of CBL.To be sent to ground system after first receiving crystal and the 4th Data Digital that receiving crystal is received.Acoustic logging and variable density log are controlled by the main controller in the existing sound wave electronics, when the order that receives ground system is an acoustic wave mode, then adopt the energy collecting type working method, 2 transmitting transducer co-operation are carried out time difference calculating delivering to ground after the whole digitlizations of data of 4 receiving crystals, 2 receptions; When the order that receives ground system is the variable density pattern, then only allow a transmitting crystal job, handle delivering to ground after first receiving crystal and the 4th Data Digital that receiving crystal receives.
Referring to Fig. 1, transmitting crystal T1 work earlier is transmitted to second transmitting crystal T2 during acoustic logging behind the 17us, transmitting crystal T2 work this moment, and two transmitting crystal acoustic wave energy stacks this moment, energy is about about 1.5 times an of transmitting crystal.This moment, the acoustic signals of stack was received simultaneously by four receiving crystals, and the four road analog signals that receive are admitted to simultaneously and are transferred to ground system after the sound wave electronics is amplified processing and digitlization simultaneously.Ground system calculates four Mintrop waves of saying the wave-wave row time of advent, can calculate three groups of interval transit times, and is higher more accurate than one group of traditional interval transit time accuracy.Draw deviation curve, find the solution rock strength, check fracturing effect, formation porosity and judge oil reservoir and gas-bearing formation more accurate.Wherein, transmitting crystal T1 and transmitting crystal T2 between distance be 15mm.Distance between receiving crystal R1, receiving crystal R2, receiving crystal R3, the receiving crystal R4 is 8 inches.
Referring to Fig. 2, when being in the variable density log state, main controller in the electronics only allows second transmitting crystal T2 work, first receiving crystal R1 and the 4th signal that receiving crystal R4 receives are sent into electronics, after amplifying processing and digitlization, be sent to ground system, ground system is handled the data of 3 feet and 5 feet, draws gray-scale map and curve map, thereby judges cementing quality.As shown in Figure 2: transmitting crystal T1 that frame gets up and receiving crystal R2, receiving crystal R3 all do not work.The present invention is connected sonic system with electronics, in well logging field extensive use.
Claims (5)
1. digital sound wave and variable density comprehensive logging instrument comprise the main controller in the sound wave electronics, it is characterized in that: comprise two transmitting crystals (1), transmitting crystal (1) below is four receiving crystals (2).
2. a kind of digital sound wave according to claim 1 and variable density comprehensive logging instrument is characterized in that: transmitting crystal (1) spacing is 15 millimeters, and the centre is acoustic isolater (3).
3. a kind of digital sound wave according to claim 2 and variable density comprehensive logging instrument, it is characterized in that: the spacing of receiving transducer is respectively 8 inches, first receiving crystal is 3 feet according to the distance of transmitting crystal, and the 4th receiving crystal is 5 feet apart from the distance of transmitting crystal.
4. a kind of digital sound wave according to claim 3 and variable density comprehensive logging instrument is characterized in that: transmitting crystal (1) and receiving crystal (2) are full of silicone oil by the leather bag packing in the leather bag.
5. a kind of digital sound wave according to claim 4 and variable density comprehensive logging instrument is characterized in that: transmitting crystal (1) is 12 strip piezoelectric ceramics, and receiving crystal (2) is eight strip piezoelectric ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009100242620A CN102042003A (en) | 2009-10-12 | 2009-10-12 | Digital sound wave and variable-density comprehensive logging instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100242620A CN102042003A (en) | 2009-10-12 | 2009-10-12 | Digital sound wave and variable-density comprehensive logging instrument |
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| CN102042003A true CN102042003A (en) | 2011-05-04 |
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| CN2009100242620A Pending CN102042003A (en) | 2009-10-12 | 2009-10-12 | Digital sound wave and variable-density comprehensive logging instrument |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606140A (en) * | 2012-03-22 | 2012-07-25 | 陕西华晨石油科技有限公司 | Series acoustic wave storage variable density logging unit |
| CN102767360A (en) * | 2012-08-08 | 2012-11-07 | 中国石油天然气集团公司 | Underground detector for measuring acousto-electric effects |
| CN103089232A (en) * | 2011-10-27 | 2013-05-08 | 中国石油集团长城钻探工程有限公司 | Methods for detecting logging equipment and correcting consistency |
| 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 |
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| CN1702294A (en) * | 2005-06-17 | 2005-11-30 | 中国石化集团胜利石油管理局测井公司 | Acoustic sonde of digital acoustic logging instrument |
| CN1807834A (en) * | 2005-07-07 | 2006-07-26 | 中国石化集团胜利石油管理局测井公司 | Acoustic variable-density well logging instrument |
| CN2835554Y (en) * | 2005-07-07 | 2006-11-08 | 中国石化集团胜利石油管理局测井公司 | Acoustic variable-density well logging instrument |
| CN101392646A (en) * | 2008-10-21 | 2009-03-25 | 中国海洋石油总公司 | Acoustic logging instrument of novel acoustic array structure |
| CN201554458U (en) * | 2009-10-12 | 2010-08-18 | 西安威尔罗根能源科技有限公司 | Digital acoustical wave density-varied comprehensive logging instrument |
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2009
- 2009-10-12 CN CN2009100242620A patent/CN102042003A/en active Pending
Patent Citations (5)
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| CN1702294A (en) * | 2005-06-17 | 2005-11-30 | 中国石化集团胜利石油管理局测井公司 | Acoustic sonde of digital acoustic logging instrument |
| CN1807834A (en) * | 2005-07-07 | 2006-07-26 | 中国石化集团胜利石油管理局测井公司 | Acoustic variable-density well logging instrument |
| CN2835554Y (en) * | 2005-07-07 | 2006-11-08 | 中国石化集团胜利石油管理局测井公司 | Acoustic variable-density well logging instrument |
| CN101392646A (en) * | 2008-10-21 | 2009-03-25 | 中国海洋石油总公司 | Acoustic logging instrument of novel acoustic array structure |
| CN201554458U (en) * | 2009-10-12 | 2010-08-18 | 西安威尔罗根能源科技有限公司 | Digital acoustical wave density-varied comprehensive logging instrument |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089232A (en) * | 2011-10-27 | 2013-05-08 | 中国石油集团长城钻探工程有限公司 | Methods for detecting logging equipment and correcting consistency |
| CN103089232B (en) * | 2011-10-27 | 2016-08-24 | 中国石油集团长城钻探工程有限公司 | The detection of logging equipment and Concordance method |
| CN102606140A (en) * | 2012-03-22 | 2012-07-25 | 陕西华晨石油科技有限公司 | Series acoustic wave storage variable density logging unit |
| CN102606140B (en) * | 2012-03-22 | 2015-04-15 | 陕西华晨石油科技有限公司 | Series acoustic wave storage variable density logging unit |
| CN102767360A (en) * | 2012-08-08 | 2012-11-07 | 中国石油天然气集团公司 | Underground detector for measuring acousto-electric effects |
| CN102767360B (en) * | 2012-08-08 | 2015-05-20 | 中国石油天然气集团公司 | Underground detector for measuring acousto-electric effects |
| 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 |
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Application publication date: 20110504 |