CN105674818A - Method driving energetic electrode to release energy and produce shock waves by high-voltage discharge - Google Patents
Method driving energetic electrode to release energy and produce shock waves by high-voltage discharge Download PDFInfo
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- CN105674818A CN105674818A CN201610075311.3A CN201610075311A CN105674818A CN 105674818 A CN105674818 A CN 105674818A CN 201610075311 A CN201610075311 A CN 201610075311A CN 105674818 A CN105674818 A CN 105674818A
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- energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
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Abstract
The invention provides a method driving an energetic material to release energy and produce shock waves by high-voltage pulse discharge plasmas underground. A cylinder (an energetic electrode for short), clamped between a high-voltage electrode and a ground electrode of a device and made by a central metal wire and a composite energetic material, is triggered by plasmas produced by high-power pulse discharge to rapidly react. Within 50 microseconds, energy is instantly released, and a large quantity of gas is produced. High-energy shock waves are produced, the high-energy shock waves act on the stratum with oscillation caused by air bubble compression and expansion, and in this way, the purposes of relieving blockage, removing scale, forming cracks, improving seepage conditions, improving permeability and communicating microchannels underground are achieved.
Description
Technical field
The present invention relates to a kind of method producing shock wave, be specifically related to a kind of down-hole by high-pressure basic granulite drive energetic material release energy produce shock wave method.
Background technology
Traditionally, the mode producing shock wave in water has chemical energy release and utilization of mechanical energy two kinds. With chemical explosion, detonation produces in the mode of shock wave, in order to reduce initiation energy, no matter take thunder and lightning pipe or blasting cap, it is necessary to improve the sensitivity of explosive and gunpowder, but increase explosive simultaneously, the danger of gunpowder, bringing very big harm to production safety and social stability, so the explosive of various Gao Hanneng, gunpowder is subject to strict control. Various explosives based on macromolecular organic compound, environment simultaneously or noxious substance, is produced to pollute by gunpowder. In geological prospecting, so-called man-made explosion is really and produces shock wave with mechanical energy on ground, is coupled to the stratum of care, inefficiency by the graceful ripple layer on earth's surface, differentiates rate variance.
In the exploitation of the oil gas quasi-fossil energy, the various technical measures of transformation reservoir all realize with Principles of Statics. Need substantial amounts of energy and the medium of transmission energy based on Principles of Statics stimulation technology, and the correctional effect on specific direction can only be produced, such as fracturing. The pressure scale of domestic a bite shale gas well is all places water, more than thousand side's sand, even if causing the development technique gratuitously adopting the U.S., it is also difficult to realize the economic development of China's shale gas. By the restriction of crustal stress, when the various stimulation technology based on Principles of Statics, the recovery ratio of domestic petroleum exploitation only 30%, mass energy is non-extraction also.
Produce shock wave under water, except with chemical explosion, outside explosive method, also having in the way of the shock wave that electrohydraulic effect produces. Electrohydraulic effect to carry out electrion in water, only about 15%; The electrohydraulic effect of modified form adopts at the preset one metal wire of discharging gap, heat rapidly with powerful short circuit dischange electric current, gasification, ionization, it is shock wave energy that blast produces plasma channel conversion of electromagnetic energy, it is possible to increase substantially the energy conversion efficiency of shock wave to 70%.No matter it is with high electrical breakdown water or with big electric current explosive metal silk elaboration shock wave, is affected by the energy storage restriction of electrical pulse device. In the world, the electric energy storage technology of the U.S. is best, and energy storage density reaches 2MJ/M, but strictly forbids selling to foreign country, and domestic energy storage technology is about 0.2MJ/cm level. By the restriction of energy storage density, it is restricted with the shock wave application that electrohydraulic effect is set forth.
The energy storage density of chemical energy is far above the energy storage density of electric energy, and the energy content of 1 gram of TNT explosive is 4.8KJ, and density is about 1.6G/CM, multiple containing can mixture containing can density with TNT on an order of magnitude. The mixture containing energy releases energy needs precondition, namely ignites. Being generally adopted the high temperature of moment, high pressure causes containing releasing energy by mixture.
Electric heating compound electric pulse technique is exactly that electroporation and the blasting technology phase compound containing energy mixture, comprehensive utilization pulse electromagnetic energy and the abrupt release containing the chemical energy of energy mixture are obtained shock wave. Owing to have employed High pulse power technology, the various sensitivity containing energy mixture can be reduced, improve the safety in producing, and can realize repeatedly to containing the energy more accurate controlled application of mixture, such as: in Oil/gas Well, control shock wave neither injure sleeve pipe, repeatedly effect can be passed through again and realize the harm that once uncontrollable blast brings.
In geological prospecting, hypocenter of the explosion or best focus, obtained signal resolution is best, but chemical explosive is dangerous, and the safety extreme difference of detonation way, the harm of environment is resulted in hypocenter of the explosion and is restricted by explosion product, even disables.
Cost oil and gas reservoir transformed with Principles of Statics is relatively big, even becomes the biggest obstacle of economic development in shale gas is developed, and single explodes, detonation effectively and cause coexisting to the damage of pit shaft, although effectively, but pit shaft is caused great injury.
The various premises containing energy mixture transient burst of energy including explosive are high temperature and HI high impact ripple, can with more strict technological means for containing providing high temperature and HI high impact by mixture, then reducing the sensitivity containing energy mixture, improve safety.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of down-hole by high-pressure basic granulite drive energetic material release energy produce shock wave method, the plasma produced with high power pulse electric discharge triggers be installed in device high-field electrode between ground electrode one and is met cylinder that energetic material makes (be called for short containing can electrode) fast reaction by central wire, transient burst of energy produce a large amount of gas in 50 microseconds. Produce high-energy shock wave, and agitate compound action in stratum due to what bubble compression-expansion produced, thus reaching down-hole de-plugging, scale removal, formation crack, improving seepage flow condition, improving permeability, link up the purpose of microchannel.
To achieve these goals, the technical solution used in the present invention is:
A kind of down-hole by high-pressure basic granulite drive energetic material release energy produce shock wave method, it is characterised in that comprise the following steps:
1) shock wave parameter as required, selects the material of energetic material, formula and geometry, size;
2) different energetic materials ignites needs heat or shock wave, according to demand difference of igniting, selects the tinsel of unlike material, size;
3) high power pulsed source according to the unlike material capacity different with the wire arrangement of size and peak power;
4) with tinsel for axis, support around wiry bar-shaped by coated for energetic material, and the complex that energetic material and tinsel form is delivered between upper/lower electrode;
5) isolation impulse capacitor contacts with wiry, and high-voltage DC power supply is impulse capacitor charging;
6) after coaxial type energy-storage pulsed capacitor electricity terminates, trigger instruction isolation switching switch is connected with exploding wires;
7) impulse capacitor passes through wire electro-discharge, tinsel generation discharge-induced explosion;
8) tinsel discharge-induced explosion produces heat energy, luminous energy or shock wave energy or individually or combined effect ignite containing producing shock wave by mixture.
Electric energy is rapidly converted into the mechanical energy of heat energy, luminous energy and shock wave form by described this method in limited region, and the heat energy produced with exploding wires or shock wave energy ignite and include the various containing energy mixture of explosive.
The described mixture containing energy wrap on tinsel, tinsel is directly concatenated in the discharge loop of impulse capacitor, when tinsel explosion time, produced heat energy, luminous energy and shock wave energy are almost applied directly to containing, on energy mixture, igniting containing energy mixture.
The invention has the beneficial effects as follows:
The present invention adopts high power pulse drive source to drive containing producing shock wave by mixture, make only to produce the energy of shock wave by puncturing discharge-induced explosion in the electrohydraulic effect of water or water with high power pulsed source and huge conversion occurs, the restriction of the energy storage in energy source driven of shock wave own is only produced with high power pulse drive source, high power pulse drive source only serves the effect of igniting, chemical energy for producing shock wave exceeds tens times than the energy storage capacity of drive source itself. As being applied to be only 4.5kJ in the electrical pulse device energy storage of oil gas down-hole treatment reservoir, and one gram containing can mixture containing all at several kJ, when adopting one gram of TNT, can just reach the energy storage capacity of whole device.
By High pulse power technology and the blasting technology phase compound containing energy mixture, improve the safety containing energy mixture and controllability and the feature of environmental protection. There is provided safety, feature of environmental protection hypocentrum cartridge for geological prospecting, provide a kind of safety, the pulse renovation technique of environmental protection for oil and gas reservoir transformation, provide a kind of safety for the finite blow-up in special environment, controlled, the demolition bomb etc. of environmental protection.
Accompanying drawing explanation
Fig. 1 is the structural representation that this method is applied in Oil/gas Well.
Fig. 2 is this method environment-friendly type seismic source apparatus schematic diagram based on electric heating compound electric pulse technique.
Fig. 3 is embodiment 3 Experimental equipment.
Fig. 4 is embodiment 4 Experimental equipment.
Fig. 5 is embodiment 3 surge waveform curve chart.
Fig. 6 is embodiment 4 surge waveform curve chart.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further discussed below.
Embodiment 1
As shown in Figure 1, a kind of down-hole by high-pressure basic granulite drive energetic material release energy produce shock wave method, it it is the electric heating compound electric pulser being applied in Oil/gas Well, high-voltage DC power supply 2 and coaxial type energy-storage pulsed capacitor 4, isolation switching switch 5 and be compounded on tinsel 6 containing can the integrated coaxial type entirety of mixture 7, inner wire is high-field electrode, and shell is ground electrode. By going into the well, cable 2 is connected with ground power supply switch board 1, and is placed into downhole in reservoir position.
Embodiment is:
Staff starts electrical power control cabinet 1 on ground, and by going into the well, cable 2 is powered for high-voltage DC power supply 3, and high-voltage DC power supply 3 charges for energy-storage pulsed capacitor 4.Isolation control switch 5 one end connects with the high-pressure side of impulse capacitor, and one section connects with one end wiry. During charging, isolation switches switch cutoff impulse capacitor and tinsel and the electrical contact containing energy mixture. The other end of tinsel 6 connects with the shell of bottom of device. After impulse capacitor 4 charging terminates, the high-pressure side of impulse capacitor 4 is switched to one end wiry rapidly by isolation switching switch 5 so that the high-pressure side of impulse capacitor is either directly through tinsel shorted to earth. Powerful short circuit dischange electric current adds rapidly hot wire in the way of Joule heating so that it is heats up, melt, vaporize, ionize, the electric energy stored in impulse capacitor is converted to heat energy, luminous energy and shock wave. The various energy of tinsel conversion be almost all applied to wrap about containing on mixture, igniting containing transmitting powerful shock wave by mixture quick release of energy.
Embodiment 2
As shown in Figure 2, a kind of down-hole by high-pressure basic granulite drive energetic material release energy produce shock wave method, being based on the environment-friendly type seismic source apparatus of electric heating compound electric pulse technique, device is made up of switch board 1, high-voltage DC power supply 2, impulse capacitor 3, isolation switching switch 4, trigger 5, high-pressure coaxial cable 6, tinsel 7 and the mixture 8 containing energy.
Embodiment is;
Switch board 1 provides primary source for high-voltage DC power supply 2, and high-voltage DC power supply is impulse capacitor charging. The high-pressure side of impulse capacitor is connected with one end of the outfan of high-voltage DC power supply and isolation switching switch. Connection during charging, between isolation switching switch 4 turn-off pulse electric capacity 3 and output high-pressure coaxial cable 6. High-pressure coaxial cable 6 connects one end and the tinsel 7 of isolation switching switch (4), and 7 one sections of tinsel connects with high-pressure coaxial cable 6, and one end is directly grounded. After impulse capacitor 3 charging terminates, trigger 6 instruction isolation switching switch (4) conducting, impulse capacitor 3 is by high voltage direct current cable 6 and the electric discharge of tinsel 7 shorted to earth.
Embodiment 3
Electric detonation is shaken and containing energy electrode generator shock wave energy contrast experiment
Electric detonation ram-jolt experiment device;
Electric detonation ram-jolt experiment device is formed (as shown in Figure 3) by following link, 1 pond, 2 electric detonation shake air gaps, 3 electric detonation shakes, 4 high pressure lines, 5 high voltage power supplies, 6 sensors, 7 sensor mask lines, 8 signal converters, 9 oscillographs.
Electric detonation shake experimental technique;
Electric detonation shake 3 is placed on the centre of water tank 1, sensor 6 is placed on consistent with electric detonation shake air gap 2 level height, shake air gap 2 from electric detonation and have the place of certain distance, electric detonation shake 3 is connected in high voltage power supply 5 by high-voltage conducting wires 4, when high voltage power supply 5 shakes 3 powered operation to electric detonation, electric detonation shake air gap 2 produces shock wave, the shockwave signal of sensor 6 pickup blast, through sensor mask line 7, shockwave signal is delivered in signal converter 8, signal after signal converter 8 processes sends oscillograph 9 to, waveform wave recording is observed in oscillograph 9, the state of ultimate analysis waveform. figure (5) is the oscillogram that electric detonation shake produces
Embodiment 4
Containing energy electrode surge generator experimental provision;
Containing being formed (as shown in Figure 4) by following link by electrode surge generator experimental provision, 1 pond, 2 containing energy electrode, and 3 containing energy electrode surge generator, 4 high pressure lines, 5 high voltage power supplies, 6 sensors, 7 sensor mask lines, 8 signal converters, 9 oscillographs.
Containing energy electrode surge generator experimental technique;
The electrode surge generator 3 containing energy is placed on the centre of water tank 1, sensor 6 is placed on consistent with electrode 2 level height containing energy, the place of certain distance is had from the electrode 2 containing energy, electric detonation shake 3 is connected in high voltage power supply 5 by high-voltage conducting wires 4, when high voltage power supply 5 is given containing energy electrode surge generator 3 powered operation, containing producing explosion wave by electrode 2, the shockwave signal of sensor 6 pickup blast, through sensor mask line 7, shockwave signal is delivered in signal converter 8, signal after signal converter 8 processes sends oscillograph 9 to, waveform wave recording is observed in oscillograph 9, the state of ultimate analysis waveform. figure (6) is the oscillogram that the electrode blast containing energy containing energy electrode surge generator produces.
Two experiment graphics Web publishing we it appeared that, in the impulse wave oscillogram of the initial of blast and the generation that ends, pulse height and the pulsewidth in later stage, amplitude, amplitude time length, containing can electrode will than electric detonation shake air gap produce shock wave figure in pulsewidth, amplitude, amplitude time length will be big. This just illustrates that the electrode containing energy is bigger than the energy that air gap generation is shaken in electric detonation, and the persistent period is long. So what produce at work is effective.
Claims (3)
1. a down-hole is driven energetic material to release energy the method producing shock wave by high-pressure basic granulite, it is characterised in that comprise the following steps:
1) shock wave parameter as required, selects the material of energetic material, formula and geometry, size;
2) different energetic materials ignites needs heat or shock wave, according to demand difference of igniting, selects the tinsel of unlike material, size;
3) high power pulsed source according to the unlike material capacity different with the wire arrangement of size and peak power;
4) with tinsel for axis, support around wiry bar-shaped by coated for energetic material, and the complex that energetic material and tinsel form is delivered between upper/lower electrode;
5) isolation impulse capacitor contacts with wiry, and high-voltage DC power supply is impulse capacitor charging;
6) after coaxial type energy-storage pulsed capacitor electricity terminates, trigger instruction isolation switching switch is connected with exploding wires;
7) impulse capacitor passes through wire electro-discharge, tinsel generation discharge-induced explosion;
8) tinsel discharge-induced explosion produces heat energy, luminous energy or shock wave energy or individually or combined effect ignite containing producing shock wave by mixture.
2. a kind of down-hole according to claim 1 by high-pressure basic granulite drive energetic material release energy produce shock wave method, it is characterized in that, electric energy is rapidly converted into the mechanical energy of heat energy, luminous energy and shock wave form by described this method in limited region, and the heat energy produced with exploding wires or shock wave energy ignite and include the various containing energy mixture of explosive.
3. a kind of down-hole according to claim 1 by high-pressure basic granulite drive energetic material release energy produce shock wave method, it is characterized in that, the described mixture containing energy wrap on tinsel, tinsel is directly concatenated in the discharge loop of impulse capacitor, when tinsel explosion time, produced heat energy, luminous energy and shock wave energy are almost applied directly to containing, on energy mixture, igniting containing energy mixture.
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Cited By (21)
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| CN106351635A (en) * | 2016-08-23 | 2017-01-25 | 西安交通大学 | Stimulated device for research on shock wave characteristics and fracturing characteristics under high hydrostatic pressure |
| CN108180003A (en) * | 2018-01-12 | 2018-06-19 | 西安交通大学 | The method that wire discharge-induced explosion driving mixture containing energy generates underwater shock wave |
| CN108267053A (en) * | 2018-03-28 | 2018-07-10 | 中国地质大学（北京） | A kind of mechanical device that plasma shot rock is generated using electrohydraulic effect |
| CN108278106A (en) * | 2018-01-12 | 2018-07-13 | 西安交通大学 | It is a kind of to be used to generate transmission increasing cumulative stick of controllable shock wave and preparation method thereof |
| CN108955433A (en) * | 2018-07-06 | 2018-12-07 | 哈尔滨理工大学 | Fuse explosion breaking concrete system and breaking method |
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| CN111550226A (en) * | 2020-05-20 | 2020-08-18 | 中国矿业大学 | Deep well electric pulse fracturing device |
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| CN111963170A (en) * | 2020-07-22 | 2020-11-20 | 北京东方德兴科技有限公司 | Electric explosion device for rock crushing and use method |
| CN112065318A (en) * | 2019-09-29 | 2020-12-11 | 中国海洋石油集团有限公司 | Energetic material rod structure resistant to high temperature and high pressure and application thereof |
| CN112466681A (en) * | 2020-11-20 | 2021-03-09 | 东莞东阳光科研发有限公司 | Electrode and preparation method thereof |
| CN112483000A (en) * | 2020-12-16 | 2021-03-12 | 浙江迅蓝智能科技有限公司 | Horizontal-hole type high-power shock wave generating device and method |
| CN112709595A (en) * | 2019-10-24 | 2021-04-27 | 西安闪光能源科技有限公司 | Directional shock wave generation device and soft coal seam gas extraction method based on same |
| CN112727427A (en) * | 2021-01-13 | 2021-04-30 | 东北大学 | Controllable shock wave and gas fracturing combined fracturing yield increasing device and method |
| CN113261640A (en) * | 2021-04-21 | 2021-08-17 | 南京航空航天大学 | Food processing device based on shock wave and low-temperature plasma |
| CN115247984A (en) * | 2022-07-15 | 2022-10-28 | 太原理工大学 | Electrode structure capable of focusing shock wave energy and electrode device composed of same |
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| CN115247984A (en) * | 2022-07-15 | 2022-10-28 | 太原理工大学 | Electrode structure capable of focusing shock wave energy and electrode device composed of same |
| CN115247984B (en) * | 2022-07-15 | 2024-02-06 | 太原理工大学 | Electrode structure capable of focusing impact wave energy and electrode device composed of electrode structure |
| CN117607948A (en) * | 2024-01-24 | 2024-02-27 | 中国科学院地质与地球物理研究所 | Wave-form controllable seismic source and geologic body advanced detection device, method and system |
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