CN109270571A - A method of high-energy air gun and its generation focus based on gas reaction - Google Patents
A method of high-energy air gun and its generation focus based on gas reaction Download PDFInfo
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- CN109270571A CN109270571A CN201811342707.5A CN201811342707A CN109270571A CN 109270571 A CN109270571 A CN 109270571A CN 201811342707 A CN201811342707 A CN 201811342707A CN 109270571 A CN109270571 A CN 109270571A
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- gas
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- air gun
- energy air
- igniting element
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 109
- 238000004880 explosion Methods 0.000 claims abstract description 22
- 238000002347 injection Methods 0.000 claims abstract description 22
- 239000007924 injection Substances 0.000 claims abstract description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000002737 fuel gas Substances 0.000 claims abstract description 11
- 239000001301 oxygen Substances 0.000 claims abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 11
- 238000005474 detonation Methods 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 239000004215 Carbon black (E152) Substances 0.000 claims description 2
- 229930195733 hydrocarbon Natural products 0.000 claims description 2
- 150000002430 hydrocarbons Chemical class 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 19
- 239000000047 product Substances 0.000 description 6
- 230000001360 synchronised effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 150000002431 hydrogen Chemical class 0.000 description 5
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 4
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 4
- 230000010349 pulsation Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/02—Generating seismic energy
- G01V1/133—Generating seismic energy using fluidic driving means, e.g. highly pressurised fluids; using implosion
- G01V1/137—Generating seismic energy using fluidic driving means, e.g. highly pressurised fluids; using implosion which fluid escapes from the generator in a pulsating manner, e.g. for generating bursts, airguns
Abstract
The high-energy air gun and its method for generating focus that the invention discloses a kind of based on gas reaction, the air gun includes the cavity of a geometrically symmetric structure, cavity is equipped with air injection pipe, air injection pipe is equipped with shut-off valve, electric igniting element is equipped in cavity, electric igniting element is connected by the ignition controller of connecting line and containment portion, and cavity is equipped at least one gas liberation port, and gas liberation port is equipped with the explosion diaphragm being sealed against.The method for generating focus is connect the following steps are included: after by the assembly of high-energy air gun with gas source, is opened shut-off valve and is injected fuel gas and oxygen into cavity；After gas fills, shut-off valve is closed, gas source is disconnected, high-energy air gun is laid to job site；It is powered to electric igniting element, causes gas reaction in cavity, generate high temperature and high pressure gas, to make explosion diaphragm moment while rupture, gas is discharged, to generate vibration wave.
Description
Technical field
The invention belongs to geophysical exploration equipment technology fields, more particularly to a kind of base applied to land or sea
In the method for the high-energy air gun and its generation focus of gas reaction.
Background technique
Man-made explosion is the important technology equipment of seismic wave field of detecting.Currently used man-made explosion includes following several
Kind: dynamite source spark source, is dropped hammer, Controlled Source Car, high pressure airgun etc..Dynamite source is in current seismic prospecting
Most common focus, but explosive can cause biggish pollution and destruction to environment, and be to belong to national stringent control product, need state
Family's examination & approval, supervision is extremely difficult and at high cost, has high risk.Spark source there are volumes big, excitation energy compared with
Low, the defects of operation with high pressure is dangerous, expensive power device rapid wear, since stimulating frequency is higher, decaying is big, is suitable only for shallow-layer and surveys
It visits.P-shooter is directly hit ground to tens tons of weight from eminence freely falling body greatly and is generated using small to tens kilograms
The disadvantages of seismic wave, that there are volumes is big, quality is heavy, inconvenient to carry, operation is very cumbersome, at high cost.Controlled Source Car has
Frequency of seismic wave is continuously adjusted in a certain range, the advantages that power output is controllable, but system complex, expensive, work are made an uproar
Sound is big, exports finite energy, is generally loaded into row job execution by heavy truck support, and more vibrator vehicles connection are needed in deep layer exploration
With easy the problems such as forming noise pollution and vegetation deterioration, application range receives certain limitation.
Air gun source is to generate vibration by the mode that high pressure gas discharges suddenly, is a kind of with environmentally protective, precision
The focus of many advantages, such as high, reproducible becomes a kind of widely used important focus equipment of offshore seismic exploration at present, accounts for
According to 95% focus market.But air gun source use by land it is more rare, due to air gun need relatively large reservoir swash
Hair, making it in land, use is extremely restricted.In addition, structure is complicated for air gun, gas release need to be sliding by slide valve/shuttle valve
It is dynamic open gas release channel (Chen Xianzhan, Liu Hao, Fu Delian etc., the Primary Study of air gun source structure, geophysical equipment, 2009,
19(supplementary issue), 7-14), such as BOLT air gun (discussion of Ma Yuejun, the BOLT accident analysis of air gun source work system and application, object
It visits and equips, 2002,12(2), 117-120) and, air gun is caused to make under the high concentration of sediment adverse circumstances such as marine corrosion environment and rivers
It is broken down with easy, the work such as need to largely be safeguarded, be maintained, overhauled.Furthermore the air gun system to be worked using such mode
System, is limited, generally within 30MPa, seismic source energy density is difficult further to mention operating pressure by gas pressurized device
It is high.Need to be using air-gun array mode in order to improve excitation energy, but this mode has synchronous or timing requirements again, air gun is synchronous
Error determines that the synchronous characterization of general air gun is in the world: in common seismic exploration, air gun is same according to specific test condition
Accidentally absolute value of the difference is less than or equal to 1ms to step, and when carrying out high resolution exploration, synchronous error is 0.3~0.5ms(Zhou Baohua, Liu
Prestige north, the development of air gun source and uses analysis (under), geophysical equipment, 1998,82,1-10).Existing air gun relies on mechanical movement
Discharge high pressure gas, thus it is synchronous or time sequence precision further increase it is also highly difficult.Existing air gun source work when be both needed to from
Pressure charging system connects high-pressure gas pipeline to air gun, is limited by length of pipe, working depth is difficult to further increase, at present
Generally less than 10m, is unable to cloth and is put into seabed to be excited to improve detection accuracy.Importantly, air gun source system at
This height, expensive, marine air gun focus need to be equipped with the ancillary equipments such as high-power air compressor system, only high-power air compressor system
With regard to needing up to ten million members.
Summary of the invention
The present invention in order to overcome the problems, such as prior art limitation and use condition limitation, provide it is a kind of it is small in size, structure is simple
The method that single, easy to operate, single-shot output energy big high-capacity environment-protecting air gun and focus generate, can in the full terrain environment in land and
It is used in marine environment.
The present invention is achieved through the following technical solutions: a kind of high-energy air gun based on gas reaction, including one
Cavity, it is characterised in that:
The cavity is geometrically symmetric structure；The shell cavity is equipped with air injection pipe, and the air injection pipe is connected to inside cavity,
The air injection pipe is equipped with shut-off valve；Electric igniting element is equipped in the cavity, the electric igniting element passes through connecting line and chamber
Ignition controller connection outside body；The cavity is equipped at least one gas liberation port, and the gas liberation port is equipped with will
Its explosion diaphragm sealed.
Further, the shape of the cavity is cylindrical shape.
Further, the electric igniting element is located at geometric center position in cylindrical chamber body, and gas liberation port has 2,
It is symmetrically disposed on cylindrical cavity both ends.
Further, the gas liberation port has 1, and set on one end of cylindrical cavity, the other end of cavity is Gu Bi,
Electric igniting element is set to the end Gu Bi.
Further, the cavity is spherical shape.
Further, the electric igniting element is located at geometric center position in spherical cavity, and gas liberation port has 4, and
For geometrically symmetric setting.
Further, the electric igniting element is located at geometric center position in spherical cavity, and gas liberation port has 3, and
For geometrically symmetric setting.
Further, the intensity of each explosion diaphragm is identical.
A method of focus being generated using the high-energy air gun, method includes the following steps:
A, electric igniting element is assembled in cavity geometric center, and is connected by the ignition controller of connecting line and containment portion；
B, explosion diaphragm is assembled on gas liberation port；
C, air injection pipe is assembled on the shell of cavity；
D, shut-off valve is assembled in air injection pipe, and is connect by gas piping with gas source；
E, shut-off valve is opened, fuel gas and oxygen are filled into cavity；
F, after gas filling, shut-off valve is closed, disconnects gas source, then high-energy air gun is laid to job site；
G, it is powered through connecting line to electric igniting element by ignition controller, electric igniting element causes gas reaction in cavity, warp
Burning, detonation, detonation generation high temperature and high pressure gas are crossed, high temperature and high pressure gas ruptures explosion diaphragm moment, discharges gas, thus
Generate vibration wave.
Further, the fuel gas is one of hydrocarbon gas such as hydrogen hydrogen or methane, propane, acetylene.
Compared with prior art, the invention has the following advantages:
1, without mechanical moving element, use reliability is high, strong to harsh environment adaptability.
2, the chemical energy of gas reaction release is utilized, energy density is much higher than compressed gas under identical initial pressure,
Therefore higher gas can be obtained under lower gas injection pressure to release stress.By taking initial gas injection pressure 10MPa as an example, reaction
Release gas pressure can achieve hundreds of MPa or more afterwards, this is at present can not by the air gun source of working media of compressed gas
Reach.And it, can be from using current compressed gas must in the case where storage pressure filling can meet requirement
The supercharging equipment of palpus.
3, the filling of gas is completed before laying air gun source, does not need high-pressure gas pipeline when laying air gun source
Connection, not only system reliability improves, but also its underwater operation depth is almost unrestricted.
4, when using pneumatic gun seismic source array working condition, synchronous and timing control precision is compared to current compressed gas
Air gun source is easier to realize.
5, such as gas filling uses hydrogen, the oxygen of reaction equivalent ratio, and reaction product is high-temperature high-pressure steam, and reaction produces
Object gas breaks through explosion diaphragm and generates vibration wave, becomes liquid water, density and periphery medium fresh water, seawater after product gas is cooling
It is almost consistent, therefore can inhibit even to be eliminated gas bubble pulsation component in vibration wave significantly, and product to environment totally nontoxic without
Evil.
6, it such as needs to fill the adjusting of type and quality by initial gas using gas bubble pulsation component in detection, it can be with
Realize the control to gas bubble pulsation component.
7, it can not only be used in marine environment, also can be used as the focus under the various geological conditions in land, it will not be to the earth
Soil causes environmental pollution.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention one.
Fig. 2 is the structural schematic diagram of the embodiment of the present invention two.
Fig. 3 is the structural schematic diagram of the embodiment of the present invention three.
Fig. 4 is the structural schematic diagram of the embodiment of the present invention four.
Fig. 5 is the time-domain signal and its time-frequency letter that the embodiment of the present invention four is obtained using the mine locating test that methane generates focus
Number.
Fig. 6 is the single-shot instigated recordings that the embodiment of the present invention four is obtained using the mine locating test that methane generates focus.
Fig. 7 is the two-dimentional survey line record for the mine locating test that the embodiment of the present invention four generates focus using methane.
Fig. 8 is the embodiment of the present invention four using several source signal normalized spatial spectrums in the mine locating test of methane generation focus
Comparison diagram.
Wherein, 1- cavity；2- air injection pipe；3- shut-off valve；4- electric igniting element；5- connecting line；6- gas liberation port；7- is quick-fried
Rupture of membranes piece.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
As shown in Figs 1-4, a kind of high-energy air gun based on gas reaction, including a cavity 1, the cavity 1 are several
What symmetrical structure；1 shell of cavity is equipped with air injection pipe 2, is connected to inside the air injection pipe 2 and cavity 1, the air injection pipe 2
It is equipped with shut-off valve 3；Electric igniting element 4 is equipped in the cavity 1, the electric igniting element 4 passes through outside connecting line 5 and cavity 1
The ignition controller in portion connects；The cavity 1 is equipped at least one gas liberation port 6, and the gas liberation port 6 is equipped with it
The explosion diaphragm 7 of sealing.
In embodiment one, the shape of the cavity 1 is cylindrical shape, and cylinder both ends open forms two gas liberation ports 6,
Two gas liberation ports 6 are all sealed by explosion diaphragm 7, and the intensity of two explosion diaphragms 7 is identical；The electric igniting element
4 are set to cylinder geometric center position, and connect with connecting line 5.
In embodiment two, the shape of the cavity 1 is sphere, sets that there are four symmetrical gas liberation ports 6 on sphere, each
Gas liberation port 6 is all sealed by explosion diaphragm 7, and the intensity of each explosion diaphragm 7 is identical；The electric igniting element 4 is set
It is connect in ball centre, and with connecting line 5.
In embodiment three, the shape of the cavity 1 is sphere, sets that there are three symmetrical gas liberation ports 6 on sphere, each
Gas liberation port 6 is all sealed by explosion diaphragm 7, and the intensity of each explosion diaphragm 7 is identical；The electric igniting element 4 is set
It is connect in ball centre, and with connecting line 5.
In example IV, the shape of the cavity 1 is cylindrical shape, and one end of cylinder is the Gu Bi of sealing, electric igniting element 4
It is connect set on the end at the end Gu Bi, and with connecting line 5；Another end opening of cylinder forms gas liberation port 6, gas liberation port 6
It is sealed by explosion diaphragm 7.
In the use of the present invention, assembling electric igniting element 4 in 1 geometric center of cavity first, and connect connecting line 5；Then
Explosion diaphragm 7 is assembled on gas liberation port 6, and air injection pipe 2 is assembled on the shell of cavity 1, assembles shut-off valve in air injection pipe 2
3, gas source is then connected by gas piping.
Fuel gas and oxygen are filled through the flow direction of gas piping, shut-off valve 3, air injection pipe 2 into cavity 1 according to gas source,
Depending on the quality of fuel gas and oxygen is as needed.Gaseous mass can be by the air gauge or pressure sensor prison on gas piping
Gas pressure is surveyed, the partial pressure of each component gas is calculated according to the law of partial pressure.
After filling, shut-off valve 3 is closed, unloads gas piping, then high-energy air gun source is laid to job site,
It is powered through connecting line 5 to electric igniting element 4 finally by ignition controller, electric igniting element 4 causes gas reaction in cavity 1
(burning, detonation, detonation) generates high temperature and high pressure gas, and high temperature and high pressure gas ruptures 7 moment of explosion diaphragm, and release gas generates
Vibration wave.
Fuel gas can be one of hydrogen, methane, propane or acetylene.
When fuel gas is hydrogen, hydrogen, oxygen reaction equation are as follows:
2H2(g)+O2(g)→H2O(g) ∆H=-242kJ/mol
That is 1 mol of hydrogen reacts the energy of releasable 242 kilojoule with equivalent oxygen, can produce 18 times under the conditions of detonation initially
The product gas of pressure.
When fuel gas is methane, methane, oxygen reaction equation are as follows:
CH4(g)+2O2(g)→CO2(g)+2H2O(g) ∆H=-802kJ/mol
That is 1 mole of methane reacts the energy of releasable 802 kilojoule with equivalent oxygen, and 27 times of initial pressures are generated under the conditions of detonation
Product gas.
When fuel gas is acetylene, 1 mol. Acetylene reacts the product gas of releasable 54 times of initial pressures with oxygen equivalents
Body.Because the chemical energy of gas reaction release is utilized, energy density is much higher than compressed gas under identical initial pressure, therefore
Higher gas can be obtained under lower gas injection pressure to release stress.
Claims (10)
1. a kind of high-energy air gun based on gas reaction, including a cavity (1), it is characterised in that:
The cavity (1) is geometrically symmetric structure；Cavity (1) shell be equipped with air injection pipe (2), the air injection pipe (2) with
Connection inside cavity (1), the air injection pipe (2) are equipped with shut-off valve (3)；Electric igniting element (4) are equipped in the cavity (1),
The electric igniting element (4) is connect by connecting line (5) ignition controller external with cavity (1)；The cavity (1) is equipped with
At least one gas liberation port (6), the gas liberation port (6) are equipped with the explosion diaphragm (7) being sealed against.
2. a kind of high-energy air gun based on gas reaction as described in claim 1, it is characterised in that: the cavity (1)
Shape is cylindrical shape.
3. a kind of high-energy air gun based on gas reaction as claimed in claim 2, it is characterised in that: the electric igniting element
(4) it is located at cavity (1) interior geometric center position, gas liberation port (6) there are 2, is symmetrically disposed on cavity (1) both ends.
4. a kind of high-energy air gun based on gas reaction as claimed in claim 2, it is characterised in that: the gas liberation port
(6) there is 1, be set to the one end of cavity (1), the other end of cavity (1) is Gu Bi, and electric igniting element (4) is set to the end Gu Bi.
5. a kind of high-energy air gun based on gas reaction as described in claim 1, it is characterised in that: the cavity (1) is
It is spherical.
6. a kind of high-energy air gun based on gas reaction as claimed in claim 5, it is characterised in that: the electric igniting element
(4) it is located at cavity (1) interior geometric center position, gas liberation port (6) there are 4, and is geometrically symmetric setting.
7. a kind of high-energy air gun based on gas reaction as claimed in claim 5, it is characterised in that: the electric igniting element
(4) it is located at cavity (1) interior geometric center position, gas liberation port (6) there are 3, and is geometrically symmetric setting.
8. a kind of high-energy air gun based on gas reaction as described in claim 1, it is characterised in that: each rupture disk
The intensity of piece (7) is identical.
9. a kind of method that high-energy air gun generates focus is based on gas using one kind described in claim 1-8 any one
The high-energy air gun of reaction, method includes the following steps:
A, electric igniting element (4) are assembled in cavity (1) geometric center, and the point fire control external by connecting line (5) and cavity (1)
Device connection processed；
B, explosion diaphragm (7) are assembled on gas liberation port (6)；
C, air injection pipe (2) are assembled on the shell of cavity (1)；
D, shut-off valve (3) are assembled on air injection pipe (2), and is connect by gas piping with gas source；
E, shut-off valve (3) are opened, filling fuel gas and oxygen into cavity (1)；
F, it after gas filling, closes shut-off valve (3), disconnects gas source, then high-energy air gun is laid to job site；
G, it is powered through connecting line (5) to electric igniting element (4) by ignition controller, electric igniting element (4) causes in cavity (1)
Gas reaction generates high temperature and high pressure gas by burning, detonation, detonation, and high temperature and high pressure gas keeps explosion diaphragm (7) moment broken
It splits, gas is discharged, to generate vibration wave.
10. the method that a kind of high-energy air gun as claimed in claim 9 generates focus, it is characterised in that: the fuel gas
For hydrogen or hydrocarbon gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811342707.5A CN109270571A (en) | 2018-11-13 | 2018-11-13 | A method of high-energy air gun and its generation focus based on gas reaction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811342707.5A CN109270571A (en) | 2018-11-13 | 2018-11-13 | A method of high-energy air gun and its generation focus based on gas reaction |
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|---|---|
| CN109270571A true CN109270571A (en) | 2019-01-25 |
Family
ID=65192322
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|---|---|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110632646A (en) * | 2019-10-15 | 2019-12-31 | 四川伟博震源科技有限公司 | Deep and distant sea seismic wave excitation device and excitation method |
| CN110646836A (en) * | 2019-10-15 | 2020-01-03 | 四川伟博震源科技有限公司 | Gas explosion transverse wave seismic source excitation device and method |
| CN114114385A (en) * | 2021-12-08 | 2022-03-01 | 中油奥博(成都)科技有限公司 | Full wave field seismic source device based on gas explosion technology and seismic data acquisition method |
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| CN110632646A (en) * | 2019-10-15 | 2019-12-31 | 四川伟博震源科技有限公司 | Deep and distant sea seismic wave excitation device and excitation method |
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| CN114114385A (en) * | 2021-12-08 | 2022-03-01 | 中油奥博(成都)科技有限公司 | Full wave field seismic source device based on gas explosion technology and seismic data acquisition method |
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