CN102466812B - Phased array spark subsource for seismic exploration - Google Patents
Phased array spark subsource for seismic exploration Download PDFInfo
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- CN102466812B CN102466812B CN 201010541046 CN201010541046A CN102466812B CN 102466812 B CN102466812 B CN 102466812B CN 201010541046 CN201010541046 CN 201010541046 CN 201010541046 A CN201010541046 A CN 201010541046A CN 102466812 B CN102466812 B CN 102466812B
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Abstract
The invention discloses a phased array spark subsource for seismic exploration, which has a main structure as follows: a metal shell of which the lower end is a cone is provided, and the shell is internally provided with a high-voltage electrode connected with a coaxial cable of a high-voltage power supply; a low-voltage electrode corresponds to the high-voltage electrode and is fixed on the cone; and the opposite electrode ends of the high-voltage electrode and the low-voltage electrode are respectively designed into mutually parallel band electrodes between which electrolyte is arranged. The subsource provided by the invention has a small quantity of water so as not to depend on environmental water. The spark subsource provided by the invention consists of a plurality of subsources distributed in an array way in practical application, the high-voltage electrode and the low-voltage electrode are both arranged in the shell of the spark subsource, and a discharge-in-liquid chamber is formed by a sealed space. The high-voltage electrode and the low-voltage electrode are designed into a parabola shape, and the discharge center is located at the focus of the parabola, thus, most of the generated energy can be propagated to the underground.
Description
Technical field
Seismic prospecting is widely used in the reconnoitring of the mineral resources such as oil, coalfield, and seismic prospecting focus commonly used mainly comprises explosive source, vibroseis, air gun source and sparker source.But under mountain environment, all there is many disadvantages in these focus, thereby so that the seismic prospecting of mineral resources be difficult to really extensively implement in the mountain area.Seismic prospecting phased array sparker source of the present invention has solved the focus bottleneck problem of mountain region seismic prospecting.
Background technology
As everyone knows, seismic exploration seismic source mainly comprises explosive source, vibroseis, air gun source and sparker source.Explosive source is traditional focus, and its shortcoming is that the open-air shot hole that needs brill deeply to reach 10-20 rice is used for loading explosive, and this is very difficult in the mountain area, and the use of explosive very dangerous (often disabled), the exploration of therefore very not suitable mountain region.Traditional vibroseis mainly refers to send by the control mechanical vibration a kind of focus of continuous seismic waves, its shortcoming is to reach deep layer exploration, usually vibrator vehicle weight will reach several tons to tens of tons, and so heavy vibrator vehicle can't be gone up a hill, and obviously is not suitable for the mountain region exploration.Air gun source can only be constructed in ocean deepwater mostly, is the forbidden zone on land, more is not suitable for the mountain region exploration.Traditional sparker source is made of power-supply system, control system and discharging electrode in water system, belong to single epicenter excitation, and a certain amount of water body of needs, main shallow water top application worker in river and swampland, its shortcoming is that energy major part that electric spark inspires leaks in the air, and energy utilization efficiency is low.The principle of tradition sparker source is the ultimate principle of common sparker source, it is that two sparking electrodes (positive is negative) are put into a water body, connect high-tension electricity and discharge switch, moment is emitted a large amount of energy when treating switch closure, a part is converted to seismic wave energy, its shortcoming is to scatter in the air in water surface excitation energy major part, and needs more water body and larger electric power system.
At the initial stage sixties, the U.S. has just begun to develop sparker source.1966, J.W.Miller obtained the patent of ground electric spark-chock origin.Electrician Institute of Chinese Academy of Sciences 1975 and Dagang Oilfield cooperation, the development of beginning oil seismic exploration ground electric spark-chock origin, to the beginning of the nineties, technical being mature on the whole.Carry out again subsequently sparker source in the applied research of the aspects such as vertical seismic profile log (being called for short the VSP well logging), crosshole seismic, vibrating oil production and engineering exploration, also obtained preferably effect, formed at present series of products.Energy grade has 500J, 1000J, 20kJ, 40kJ, 200kJ, 400kJ, 600kJ.Wherein, the focus of 1kJ grade is mainly used in penetrating between Non-Destructive Testing, hole and scientific research etc., and 20kJ and 40kJ focus are mainly used in engineering exploration, and the seismic prospecting that the above focus of 200kJ is mainly used in coalfield and oil field is vehicular.These researchs all only only limit to the research of single focus, also do not implement phased-array technique.
Summary of the invention
The object of the present invention is to provide a kind of sub-focus of phased array electric spark for seismic prospecting, to be adapted to the especially needs of seismic exploration in mountainous district of land, to make focus have portable, phased and do not rely on the characteristics such as Environmental Water.
For achieving the above object, the sub-focus of phased array electric spark provided by the invention, its primary structure is:
One lower end is the metal shell of cone, and enclosure interior is provided with high-field electrode, and this high-field electrode connects the high-voltage power supply concentric cable; With this high-field electrode over against the low-field electrode that is provided with of answering, this low-field electrode is fixed on the cone;
The electrode tip that high-field electrode is relative with low-field electrode respectively is designed to the plate electrode that is parallel to each other, is provided with electrolytic solution between two plate electrodes.
The sub-focus of described phased array electric spark, the plate electrode of the electrode tip that wherein high-field electrode is relative with low-field electrode is parabolic shape.
The sub-focus of described phased array electric spark, wherein electrolytic solution is salt solution.
The sub-focus of described phased array electric spark, wherein high-field electrode is that wolfram steel is made, low-field electrode and betal can are linked as stainless steel and make.
The sub-focus of described phased array electric spark wherein is provided with the insulation reflecting body in the metal shell.
The sub-focus of described phased array electric spark, the reflecting body that wherein insulate is pottery.
The sub-focus of described phased array electric spark, wherein the top of metal shell has a shell cap.
Effect of the present invention is as follows:
1) modular technology of the sub-focus of electric spark and precision Control Technology can be easy to assembling and carrying, can realize phased array again, are suitable for the mountain region seismic prospecting.
2) the sub-focus of a plurality of electric sparks has focusing and directivity under phase-shifter control, and energy is high, bandwidth.
3) epicenter excitation is in underground, and most of energy can not leak in the air and to underground propagation, direction of propagation of energy is controlled, and capacity usage ratio is high.
Description of drawings
Fig. 1 is the structural representation of the sub-focus of phased array electric spark of the present invention.
Fig. 2 is that the sub-focus of seismic prospecting phased array electric spark of the present invention forms schematic diagram.
Embodiment
Technical scheme of the present invention is that the shallow water table mode of excitation with traditional sparker source redesigns, and they are placed a cone (as shown in Figure 1) that similar seismoreceiver is the same, and it is referred to as the sub-focus of electric spark.The structure of the sub-focus of this phased array electric spark is a metal shell 1, and the bottom of this metal shell is a cone 2, metal shell 1 internal vertical be provided with high-field electrode 3 and low-field electrode 4.High-field electrode 3 is connected with control system with the energy resource system of metal shell 1 outside by a concentric cable 5, energy resource system is made of the thin-film capacitor insulation system of high energy storage density, high power density, control system is comprised of modularization heavy-current discharge impulse source and low jitter switching system, (energy resource system and control system are known technology to have the function of the accurate controlled discharge of many focus sequential, therefore not the emphasis that the present invention discusses, do not recommend accompanying drawing and be not described in detail).Metal shell 1 inside is filled with insulation reflecting body 7 after installing high-field electrode and low-field electrode, and the top of metal shell is sealed by a shell cap 6.
Low-field electrode 4 is to be fixed on the cone 2, is in fact to be connected as a single entity with metal shell 1 to form a low-field electrode.
In order to increase the discharge power between high-field electrode and the low-field electrode, the present invention two ends that high-field electrode is corresponding with low-field electrode are designed to plate electrode 3 ' and 4 ', are electrolytic solution 8 between plate electrode 3 ' and 4 '.Because the space constraint of metal shell 1 inside for enlarging as much as possible the area of plate electrode 3 ' and 4 ', can be designed to parabolic shape.
The sub-focus of electric spark of the present invention is comprised of the sub-focus of a plurality of one-tenth array distribution when reality is used, and this a little focus does not rely on Environmental Water.High-field electrode and low-field electrode all are in the housing of the sub-focus of electric spark, are electrolytic solution 8 between high pressure plate electrode and low pressure plate electrode, form the discharge in liquid chamber by the space of sealing.And high-field electrode and low-field electrode be designed to parabolic shape, and make discharge centers be positioned at parabolical focus place, such energy major part that produces can be to underground propagation.
Electrolytic solution of the present invention is that salt solution is made, and the concentration of this salt solution is strict the restriction not.High-field electrode is made with wolfram steel, and low-field electrode is communicated with the metal shell of the sub-focus of electric spark, all makes with stainless steel.Inside conductor 9 and the concentric cable of high-field electrode are all made with copper cash.The insulation reflecting body is pottery.
Although the sub-focus energy comparison of single electric spark of the present invention is little, use phased-array technique to reach high-octane purpose with a plurality of sub-source patterns, can accomplish the deep layer detection.As shown in Figure 2, be 10 to take advantage of 10 square formation, for example single sub-seismic source energy can be accomplished 2KJ, and being combined into 10, to take advantage of 10 square formation be exactly 100 sub-focus, and its total energy can reach 200KJ, can explore deeply to reach 2 kilometers target fully.The more important thing is that such design and construction are very simple, arrange focus just as arranging seismoreceiver, directly insert in the soil of ground this a little focus just passable with hand.
Claims (6)
1. sub-focus of phased array electric spark that is used for seismic prospecting, its primary structure is:
One lower end is the metal shell of cone, and enclosure interior is provided with high-field electrode, and this high-field electrode connects the high-voltage power supply concentric cable; With this high-field electrode over against the low-field electrode that is provided with of answering, this low-field electrode is fixed on the cone;
The electrode tip that high-field electrode is relative with low-field electrode respectively is designed to the plate electrode that is parallel to each other, and plate electrode is parabolic shape, is provided with electrolytic solution between two plate electrodes.
2. the sub-focus of phased array electric spark according to claim 1, wherein, electrolytic solution is salt solution.
3. the sub-focus of phased array electric spark according to claim 1, wherein, high-field electrode is that wolfram steel is made, low-field electrode and metal shell are that stainless steel is made.
4. the sub-focus of phased array electric spark according to claim 1 wherein, is provided with the insulation reflecting body in the metal shell.
5. the sub-focus of phased array electric spark according to claim 4, wherein, the insulation reflecting body be ceramic.
6. the sub-focus of phased array electric spark according to claim 1, wherein, the top of metal shell has a shell cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010541046 CN102466812B (en) | 2010-11-10 | 2010-11-10 | Phased array spark subsource for seismic exploration |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010541046 CN102466812B (en) | 2010-11-10 | 2010-11-10 | Phased array spark subsource for seismic exploration |
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| CN102466812A CN102466812A (en) | 2012-05-23 |
| CN102466812B true CN102466812B (en) | 2013-09-18 |
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| CN 201010541046 Expired - Fee Related CN102466812B (en) | 2010-11-10 | 2010-11-10 | Phased array spark subsource for seismic exploration |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630928A (en) * | 2013-12-09 | 2014-03-12 | 岳阳奥成科技有限公司 | Cross-well sparker source emission probe |
| CN103744111B (en) * | 2014-01-23 | 2016-06-22 | 钟世航 | Vibration exciter fore-end and apply its land electric spark vibration exciter |
| CN104730569A (en) * | 2015-03-31 | 2015-06-24 | 中国科学院电工研究所 | Electro-acoustic transformation electrode |
| CN105204062B (en) * | 2015-08-31 | 2018-07-27 | 中国科学院电工研究所 | A kind of anti-loosening spherical surface multi beam energy converter |
| CN105223605B (en) * | 2015-09-28 | 2017-12-05 | 中国科学院电工研究所 | The multichannel spark source system and control method of a kind of microsecond SECO |
| CN106526658B (en) * | 2016-12-31 | 2019-06-25 | 中国海洋大学 | Ocean high-resolution solid phase modulation focus |
| CN106932814B (en) * | 2017-05-06 | 2023-08-04 | 中国海洋大学 | Marine high-resolution stereoscopic vertical delay electric spark seismic source |
| CN107861173A (en) * | 2017-11-25 | 2018-03-30 | 安徽理工大学 | All-in-One sensor is used in a kind of underground exploration |
| CN112180432B (en) * | 2020-09-01 | 2023-10-20 | 中国科学院深圳先进技术研究院 | High-efficiency electric spark source system based on corona discharge and setting method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103629A (en) * | 1985-05-27 | 1986-10-22 | 中国科学院电工研究所 | Ground electric spark-chock origin |
| CN1560651A (en) * | 2004-03-03 | 2005-01-05 | 吉林大学 | Phased array seismic prospecting method |
| CN1621859A (en) * | 2003-11-24 | 2005-06-01 | 中国石油天然气集团公司 | Directional controlled down-hole sound wave radiator at will |
| CN1740820A (en) * | 2004-08-27 | 2006-03-01 | 长江水利委员会长江工程地球物理勘测研究院(武汉) | Emission scanning phased array ground detecting radar |
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2010
- 2010-11-10 CN CN 201010541046 patent/CN102466812B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103629A (en) * | 1985-05-27 | 1986-10-22 | 中国科学院电工研究所 | Ground electric spark-chock origin |
| CN1621859A (en) * | 2003-11-24 | 2005-06-01 | 中国石油天然气集团公司 | Directional controlled down-hole sound wave radiator at will |
| CN1560651A (en) * | 2004-03-03 | 2005-01-05 | 吉林大学 | Phased array seismic prospecting method |
| CN1740820A (en) * | 2004-08-27 | 2006-03-01 | 长江水利委员会长江工程地球物理勘测研究院(武汉) | Emission scanning phased array ground detecting radar |
Non-Patent Citations (4)
| Title |
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| Richard D.Rechtien.可用于井下环境的一种高频电火花震源.《勘探地球物理进展》.1993,(第01期), |
| 可用于井下环境的一种高频电火花震源;Richard D.Rechtien;《勘探地球物理进展》;19930228(第01期);90 * |
| 大功率电脉冲采油技术原理与应用;孙鹞鸿等;《钻采工艺》;20020525(第05期);53-55 * |
| 孙鹞鸿等.大功率电脉冲采油技术原理与应用.《钻采工艺》.2002,(第05期), |
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