CN103352690A - Transient electromagnetic logging transmitting probe - Google Patents
Transient electromagnetic logging transmitting probe Download PDFInfo
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- CN103352690A CN103352690A CN2013102560107A CN201310256010A CN103352690A CN 103352690 A CN103352690 A CN 103352690A CN 2013102560107 A CN2013102560107 A CN 2013102560107A CN 201310256010 A CN201310256010 A CN 201310256010A CN 103352690 A CN103352690 A CN 103352690A
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- magnetic tube
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- tube gland
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Abstract
The invention discloses a transient electromagnetic logging transmitting probe which comprises a magnetic tube, wherein the magnetic tube is sleeved with a coil framework, the coil framework is wound with a coil, and a first magnetic tube gland and a second magnetic tube gland are arranged at the upper part and the lower part of the magnetic tube respectively; a piezo-transistor and a third magnetic tube gland are sequentially arranged below the second magnetic tube gland, and a connecting rod penetrates through the first magnetic tube gland, the magnetic tube, the second magnetic tube gland, the piezo-transistor and the third magnetic tube gland; the first magnetic tube gland and the connecting rod are connected through a first thread; the second magnetic tube gland and the connecting rod are connected through a second thread; the third magnetic tube gland and the connecting rod are connected through a third thread; the coil framework is connected with the first magnetic tube gland and the second magnetic tube gland through a fourth thread; and the coil and the piezo-transistor are electrically connected. With the adoption of the transmitting probe, casing thickness is effectively detected, through-casing stratum electrical parameters can be effectively measured, and the sensitivity of the detection is improved.
Description
Technical field
The present invention relates to the petroleum works well logging field, particularly a kind of transient electromagnetic well logging transmitting probe.
Background technology
In the oil development process, different injected waters and operation water are very serious to the corrosion of sleeve pipe, objective evaluation sleeve pipe quality, and the electrical parameter of target zone is effectively measured is design oil reservoir development scheme, improve one of important content that the engineerings such as recovery ratio use.
In the prior art, usually adopt the mode of multi-arm caliper to measure to the cased well inwall, adopt the mode in magnetic field to measure to casing thickness.Multi-arm caliper is contact measurement method, and the hole diameter that can only measure inwall distributes; The employed frequency ratio of Measurement Method for Magnetic Field is lower, identifies casing thickness by the changes of magnetic field of measuring in the sleeve pipe, is non-contact method, is specially: emission approaches static magnetic field, moves the measuring unit tube thickness by instrument, and remolding sensitivity is lower.
Summary of the invention
In order to address the above problem, the invention provides a kind of transient electromagnetic well logging transmitting probe, the present invention has improved the sensitivity that detects, and has enlarged the scope in the practical application, sees for details hereinafter and describes:
A kind of transient electromagnetic well logging transmitting probe, described probe comprises: magnetic tube,
The outer cover of described magnetic tube is connected to coil rack, is wound with coil on the described coil rack, described magnetic tube be respectively arranged with up and down the first magnetic tube gland and the second magnetic tube gland; Be disposed with piezotransistor and the 3rd magnetic tube gland under described the second magnetic tube gland, be penetrated with connecting rod between described the first magnetic tube gland, described magnetic tube, described the second magnetic tube gland, described piezotransistor and described the 3rd magnetic tube gland;
Be threaded by first between described the first magnetic tube gland and the described connecting rod; Be threaded by second between described the second magnetic tube gland and the described connecting rod; Be threaded by the 3rd between described the 3rd magnetic tube gland and the described connecting rod; Be threaded by the 4th between described coil rack and described the first magnetic tube gland and described the second magnetic tube gland; Be electrically connected between described coil and the described piezotransistor.
In a preferred embodiment, be connected in series between described coil and the described piezotransistor.
In another preferred embodiment, be connected in parallel between described coil and the described piezotransistor.
When described magnetic tube is the column type magnetic core of high magnetic permeability, improved electromagnetic intensity.
When described connecting rod is nonmetals, also prolonged the application life of this transmitting probe.
The beneficial effect of technical scheme provided by the invention is: the present invention adopts transition to excite, in cased well, excite transient magnetic field with the low frequency and continuous spectrum, measure transient electromagnetic induced electromotive force waveform, process the electrical parameter that waveform obtains casing thickness and stratum by the method that signal is processed, realized casing thickness is effectively detected and can effectively measure crossing sleeve pipe stratum electrical parameter, improved the sensitivity that detects.
Description of drawings
Fig. 1 is a kind of structural representation of transient electromagnetic well logging transmitting probe.
1: the first magnetic tube gland; 2: coil rack;
3: the second magnetic tube glands; 4: the first screw threads;
5: the second screw threads; 6: magnetic tube;
7: piezotransistor; 8: the three magnetic tube glands;
9: the three screw threads; 10: connecting rod;
11: coil; 12: the four screw threads.
The specific embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
In order to improve the sensitivity of detection, enlarge the scope of practical application, the embodiment of the invention provides a kind of transient electromagnetic well logging transmitting probe, referring to Fig. 1, this transient electromagnetic well logging transmitting probe comprises: magnetic tube 6, and this magnetic tube 6 is preferably the column type core material of high magnetic permeability, and the outer cover of magnetic tube 6 is connected to coil rack 2, be wound with coil 11 on the coil rack 2, magnetic tube 6 be respectively arranged with up and down the first magnetic tube gland 1 and the second magnetic tube gland 3; The second magnetic tube gland is disposed with for 3 times between piezotransistor 7 and the 3rd magnetic tube gland 8, the first magnetic tube glands 1, magnetic tube 6, the second magnetic tube gland 3, piezotransistor 7 and the 3rd magnetic tube gland 8 and is penetrated with connecting rod 10; Connect by the first screw thread 4 between the first magnetic tube gland 1 and the connecting rod 10; Connect by the second screw thread 5 between the second magnetic tube gland 3 and the connecting rod 10; Connect by the 3rd screw thread 9 between the 3rd magnetic tube gland 8 and the connecting rod 10; Be connected by the 4th screw thread 12 between coil rack 2 and the first magnetic tube gland 1 and the second magnetic tube gland 3; Be electrically connected between coil 11 and the piezotransistor 7.
Wherein, the core material of high magnetic permeability is generally alloy and silicon steel sheet etc., in addition, needs during use on the several factually borders of the material of coil 11, canoe and wound convolution are selected, when coil 11 is selected the thick and multiply coiling of diameters, can flow through large electric current, during specific implementation, the embodiment of the invention does not limit this.
During specific implementation, magnetic tube 6 above and below are fixing with the first magnetic tube gland 1 and the second magnetic tube gland 3, the first magnetic tube gland 1 and the second magnetic tube gland 3 are used for fixed coil skeleton 2 and magnetic tube 6; Piezotransistor 7 and the second magnetic tube gland 3 are connected, firmly are connected with connecting rod 10 in the middle of the second magnetic tube gland 3 and the 3rd magnetic tube gland 8 by connecting rod 10, between connecting rod 10 and the first magnetic tube gland 1, the second magnetic tube gland 3 and the 3rd magnetic tube gland 8 respectively be threaded, between coil rack 2 and the first magnetic tube gland 1 and the second magnetic tube gland 3 also with being threaded.
Be threaded so that compress connection between piezotransistor 7 and the 3rd magnetic tube gland 8 between the first magnetic tube gland 1, the second magnetic tube gland 3 and the connecting rod 10 by above-mentioned.
Wherein, be electrically connected between coil 11 and the piezotransistor 7 can for: be connected in series, namely an end of coil 11 is connected with an end of piezotransistor 7, and the other end of the other end of coil 11 and piezotransistor 7 is as output, pick out, and then as the output line of popping one's head in.
In addition, be electrically connected between coil 11 and the piezotransistor 7 can also for: be connected in parallel, namely the two ends of coil 11 are connected with the two ends of piezotransistor 7, and draw two connecting lines as output, pick out, and then the conduct output line of popping one's head in.
In preferred embodiment, the material of connecting rod 10 is nonmetals, by the selection of material, has prolonged the application life of whole probe, has reduced cost.
The operating principle of this transmitting probe is: adopt transition to excite, in cased well, excite transient magnetic field with the low frequency and continuous spectrum, measure transient electromagnetic induced electromotive force waveform, process the electrical parameter that waveform obtains casing thickness and stratum by the method that signal is processed, realized casing thickness is effectively detected and can effectively measure crossing sleeve pipe stratum electrical parameter.
This probe can inspire more intense transient magnetic field, can induce more intense transition induced electromotive force in cased well.Can produce strong magnetic field intensity under the function of current of the magnetic core of high magnetic permeability in coil 11, electric current switching moment can produce very strong electromagnetic intensity in well, these electromagnetic intensities pass sleeve pipe and enter the stratum, produce more intense induced electromotive force in sleeve pipe.Because inductance has the inductive load feature, induction reactance is larger when adding electric flux from power supply, and it is smaller that institute adds electric current, and electric flux can add, and the piezotransistor 7 of capacitive can be offset part induction reactance, reduces the reactance of transmitting probe, and electric flux is added on the probe.
During specific implementation, the embodiment of the invention is not done any restriction to the model of above-mentioned device, all can as long as can finish the device of above-mentioned functions.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the invention described above embodiment sequence number does not represent the quality of embodiment just to description.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. transient electromagnetic well logging transmitting probe is characterized in that described probe comprises: magnetic tube,
The outer cover of described magnetic tube is connected to coil rack, is wound with coil on the described coil rack, described magnetic tube be respectively arranged with up and down the first magnetic tube gland and the second magnetic tube gland; Be disposed with piezotransistor and the 3rd magnetic tube gland under described the second magnetic tube gland, be penetrated with connecting rod between described the first magnetic tube gland, described magnetic tube, described the second magnetic tube gland, described piezotransistor and described the 3rd magnetic tube gland;
Be threaded by first between described the first magnetic tube gland and the described connecting rod; Be threaded by second between described the second magnetic tube gland and the described connecting rod; Be threaded by the 3rd between described the 3rd magnetic tube gland and the described connecting rod; Be threaded by the 4th between described coil rack and described the first magnetic tube gland and described the second magnetic tube gland; Be electrically connected between described coil and the described piezotransistor.
2. a kind of transient electromagnetic well logging transmitting probe according to claim 1 is characterized in that, is connected in series between described coil and the described piezotransistor.
3. a kind of transient electromagnetic well logging transmitting probe according to claim 1 is characterized in that, is connected in parallel between described coil and the described piezotransistor.
4. a kind of transient electromagnetic well logging transmitting probe according to claim 1 is characterized in that, described magnetic tube is the column type magnetic core of high magnetic permeability or the cylinder that splices with the magnetic core annulus.
5. a kind of transient electromagnetic well logging transmitting probe according to claim 1 is characterized in that described connecting rod is nonmetal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310256010.7A CN103352690B (en) | 2013-06-25 | 2013-06-25 | A kind of transient electromagnetic well logging transmitting probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310256010.7A CN103352690B (en) | 2013-06-25 | 2013-06-25 | A kind of transient electromagnetic well logging transmitting probe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103352690A true CN103352690A (en) | 2013-10-16 |
| CN103352690B CN103352690B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310256010.7A Active CN103352690B (en) | 2013-06-25 | 2013-06-25 | A kind of transient electromagnetic well logging transmitting probe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590825A (en) * | 2013-10-26 | 2014-02-19 | 中国石油化工集团公司 | Transient electromagnetic well-logging probe detection system |
| CN103590820A (en) * | 2013-10-26 | 2014-02-19 | 中国石油化工集团公司 | Transient electromagnetic emission probe |
| CN112415617A (en) * | 2019-08-22 | 2021-02-26 | 天津大学青岛海洋技术研究院 | Circular electrode powered underground abnormal body detection device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040202047A1 (en) * | 2003-04-08 | 2004-10-14 | Fripp Michael L. | Hybrid piezoelectric and magnetostrictive actuator |
| CN101581214A (en) * | 2009-03-23 | 2009-11-18 | 西安石油大学 | Transient electromagnetic logging device in through-casing well |
| CN201539248U (en) * | 2009-11-17 | 2010-08-04 | 中国石油天然气集团公司 | Electromagnetic logging instrument for oilfield production well |
| CN102071927A (en) * | 2011-01-27 | 2011-05-25 | 西北工业大学 | Piezoelectric ceramic electro-acoustic transducer with cylindrical ring structure |
-
2013
- 2013-06-25 CN CN201310256010.7A patent/CN103352690B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040202047A1 (en) * | 2003-04-08 | 2004-10-14 | Fripp Michael L. | Hybrid piezoelectric and magnetostrictive actuator |
| CN101581214A (en) * | 2009-03-23 | 2009-11-18 | 西安石油大学 | Transient electromagnetic logging device in through-casing well |
| CN201539248U (en) * | 2009-11-17 | 2010-08-04 | 中国石油天然气集团公司 | Electromagnetic logging instrument for oilfield production well |
| CN102071927A (en) * | 2011-01-27 | 2011-05-25 | 西北工业大学 | Piezoelectric ceramic electro-acoustic transducer with cylindrical ring structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590825A (en) * | 2013-10-26 | 2014-02-19 | 中国石油化工集团公司 | Transient electromagnetic well-logging probe detection system |
| CN103590820A (en) * | 2013-10-26 | 2014-02-19 | 中国石油化工集团公司 | Transient electromagnetic emission probe |
| CN112415617A (en) * | 2019-08-22 | 2021-02-26 | 天津大学青岛海洋技术研究院 | Circular electrode powered underground abnormal body detection device |
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| Publication number | Publication date |
|---|---|
| CN103352690B (en) | 2016-04-06 |
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Effective date of registration: 20210308 Address after: 101300 Zhaofeng Town, Shunyi District, Beijing Zhaofeng industrial base 7 Yuan Ying Road Patentee after: Beijing Huahui Detection Technology Co.,Ltd. Address before: 300072 Tianjin City, Nankai District Wei Jin Road No. 92 Patentee before: Tianjin University |