CN1083224A - Gas explosion seismic source and system - Google Patents
Gas explosion seismic source and system Download PDFInfo
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- CN1083224A CN1083224A CN 92109667 CN92109667A CN1083224A CN 1083224 A CN1083224 A CN 1083224A CN 92109667 CN92109667 CN 92109667 CN 92109667 A CN92109667 A CN 92109667A CN 1083224 A CN1083224 A CN 1083224A
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- blast
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- 238000004880 explosion Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000005284 excitation Effects 0.000 claims abstract description 8
- 239000002360 explosive Substances 0.000 claims description 19
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 8
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims description 8
- 239000000428 dust Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000010892 electric spark Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 1
- 238000000889 atomisation Methods 0.000 claims 1
- 238000005553 drilling Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 2
- 238000011156 evaluation Methods 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 32
- 238000010586 diagram Methods 0.000 description 3
- 241000283726 Bison Species 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000005474 detonation Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000005997 Calcium carbide Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001615 p wave Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention belongs to an excitation method for seismic exploration in geophysical exploration. It features that the vibration is generated by gas explosion. The excitation source has wide application, is suitable for the exploration of resources such as coal fields, petroleum and the like, and can also be used as the excitation source required by shallow seismic exploration, engineering geologic body evaluation and the like. The gas explosion seismic source system has the characteristics of small device, strong energy, good repeatability, good directivity and controllability, low excitation cost and the like.
Description
The present invention adopts gas burst to produce a kind of method of seismic event in the seismic prospecting.
Seismic prospecting is to utilize artificial excitation's elastic wave to carry out geologic body, a kind of method that rock, soil, engineering body are surveyed.Therefore, in seismic prospecting, the exciting of elastic wave cause close important.So far, the earthquake source that extensively adopts two classes are arranged: the one, the explosive charge focus; The 2nd, the physical explosion focus.The former comprises that utilizing various explosives, detonator, bullet etc. to ignite produces the Seismic Source System that different earthquake is explored the required seismic event of purpose (elastic wave, sound wave).The latter comprises that methods such as hammering, air cannon, electric spark, mechanical vibration, weight launch produce the Seismic Source System of seismic event.With regard to China, resource exploration uses the explosive charge focus of macro-energy more at present, generally adopts cap sensitive.Large-scale sparker source and air gun were also once developed in exploration for land resources.Once tested a cover sparker source before and after 83 years as Chinese Academy of Sciences electrician place, its device is huge, uses 6 tons of trucies loading; Geology bureau Anhui Province, CHINESE COAL field coalfield thing survey team and marine geophysical prospecting research institute of the Chinese Academy of Sciences (Shanghai) cooperative investment have been developed a cover land air cannon system for more than 50,000 yuan during 84～85 years, install also very hugely, also need be equipped with generator, air compressor etc. except that air gun must vehicle-mounted equipment.The used focus of engineering and shallow seismic exploration: as hunting cartridges focus (Shotgun source), though install for a short time, safer, its energy is little, cost higher (every Buffalo gun bullet 2.85 dollars).In addition, the focus of being produced by U.S. Bison Instr Ltd. (The Bison Elastic Wave Generator) that launches weighs 8000 pounds.(Bison institutional advertising).United States Patent (USP) PAT-APPL-7-511372 and PAT-APPL-7-387913 have described two kinds of WIH and have pressed the seismic wave generator that vibrates.（hydraulic seismic generator）。
The objective of the invention is to adopt the method generation of mixed gas blast to be used for the required various seismic wave generators of different earthquake exploration purpose.Wherein not only comprise to be used for producing resource exploration, shallow-layer, the required p-wave source of engineering exploration, also comprise shear wave, ground roll, slot wave focus exploration.Specifically: use this method can finish the required focus of following seismic prospecting:
(1) is applicable to explosive source in the shot hole of resource exploration (coalfield, oil).Can make the gas exploder of different-diameter for the explosive hole of different-diameter, to obtain the seismic event of different-energy and frequency.
(2) the engineering seismology focus that excites in the aperture, shallow earthquake focus, slot wave focus.
(3) pile crown and cement pavement exciting focus; Exciting focus in shallow water and the mud sump.
(4) oceanic earthquake source.
(5) earthquake source between the hole.
(6) control explosion gas flow path direction can produce significant waves such as compressional wave, shear wave, ground roll in well.
Content of the present invention is the method for the required seismic event (mechanical vibration wave, sound wave) of blast generation seismic prospecting of employing gas phase and engineering detecting.The gas phase blast is meant mixed gas blast, decomposing gas blast, dust explosion and spraying blast.
The present invention is compared to the prior art method and has the following advantages:
One. compare with the physical explosion focus:
Air gun, sparker source, to launch the weight focus be respectively the method that energy, high voltage electric energy and the gravitional force abrupt release of gases at high pressure storage collection is produced seismic event.And gas phase blast is a kind of chemical explosion phenomenon, and the high pressure, the High Temperature Gas that can be in the extremely short time produce in chemical reaction process can discharge the generation seismic event.Its advantage is that energy is strong, device is little, cost is low.
Two. compare with explosive source:
Though all belong to chemical explosion but essential distinction arranged on the implementation.Explosive source is to adopt solid explosive, generally need use cap sensitive.Therefore production unit at first need be set up explosives magazine and shot house; The special-purpose vehicle (detonator, explosive can not load in mixture with car) that transportation explosive and detonator must be arranged in the construction in the open air; Need when exciting in the well explosive and detonator packing, and put it in the hole, therefore, need personnel more (bag medicine, prescribe medicine, three groups of personnel of blast) dangerous big.A cover gas source loading amount is adopted in the gas phase blast, goes into the well conveniently; Adopt spark ignition, than blasting explosive secure.On energy, can compare (because of explosive source exists the explosive damage band to the strong absorption of seismic event and the energy loss of upwards propagating along boring, its real energy of propagating and not very big) downwards with explosive source.On cost, than low many of explosive source.If adopt the source of the gas of acetylene gas as explosion gas, can be directly angry at the scene with small-sized carbide-feed generator, used calcium carbide (CaC
2) convenient transportation, low price calculates by 10 liters of air chambers, and every big gun cost is only several shares money.In addition, gas exploder also has good reproducibility, good directionality, is easy to advantages such as control.Can make the focus that many explosives are difficult to realization, as swashing continuous hypocenter of the explosion in a stake vibration source, the well, shear wave source etc.
Realize best way of the present invention: with acetylene gas and air gas mixture as explosion gas, with following several respects explanation embodiment:
Fig. 1 adopts the apparatus system synoptic diagram of small-sized carbide-feed generator as source of the gas
The acetylene gas that is produced by carbide-feed generator (source of the gas) (1) enters acetylene gas and air mixed air chamber and blast air chamber (3) by back fire arrester (2), produces detonation by spark plug (4) by portfire (5) igniting when acetylene gas reaches finite concentration.High speed energy impact well liquid (6) that discharges when detonation takes place and shaft bottom produce seismic event.Downhole hardware is promoted by cable (7).
Fig. 2 is an activating system synoptic diagram in the source of the gas well of ground, its principle and Fig. 1 are similar, and difference is that source of the gas (1) is placed ground, increases an air supply source (2) simultaneously, can repeatedly excite in the back of once exploding by a certain proportion of combination gas of source of the gas supply thus.(1) is flammable source of the gas among the figure, can directly be supplied with by gas cylinder and carbide-feed generator; (2) be air source, can supply with by air pump; (3) be mixed air vessel and explosion chamber; (4) be portfire; (5) be spark plug; (6) be cable; (7) be tracheae; (8) be back fire arrester.
Adopt above two kinds of schemes except that can in well, directly exciting, can also make following Seismic Source System;
Fig. 3 swashs the stake system schematic
Focus is placed on carrying in the bucket on pile crown or the cement pavement excites, can realize exciting pile foundation and road surface.(1) bucket among the figure; (2) seismic source apparatus; (3) pile crown; (4) water;
Fig. 4 is direct exciting focus synoptic diagram
Seismic Source System (1) joined like weight (2) directly be put in the paddy field, excite in the mud sump, can satisfy the requirement that rig is difficult for punching (as southern china) regional seismic exploration seismic source.
Directly place ocean or lake, river to excite focus, can satisfy the requirement of sea, lake seismic exploration seismic source.
Claims (6)
1, the invention belongs to the excitation method of seismic exploration seismic source in the geophysical survey.With regard to existing focus technology: employing mainly be solid explosive blast, cap sensitive and physical explosion (air gun, electric spark, weight etc.).Wherein the exciting scope service condition of each method is all more limited.
Technical characterictic of the present invention is: adopt the excitation method of gas phase blast as earthquake source.Wherein the gas phase blast comprises:
A. mixed gas blast: the blast of the mixed gas that constitutes as air and methane, gasoline vapour;
B decomposing gas blast: the blast that decomposing gas such as acetylene, ethene produce;
C dust explosion and spraying blast: combustible dust or flammable liquid are in the blast that causes when acutely burning behind the atomisation.
2, according to the excitation method of claim (1), it is characterized in that with carbide-feed generator or canned acetylene gas be the gas exploder of source of the gas, mix in the blast air chamber with air and acetylene gas, by the gas exploder of electric ignition device igniting.
3, according to claim 1,2 described method and Seismic Source System, it is characterized in that in mixed air vessel and blast air chamber directly by ignition device, by drilling well, sea, mud or the direct coupling exciting of water in the lake.
4,, it is characterized in that on pile crown, road surface, exciting indirect coupling exciting by carrying in the bucket according to claim 1,2 described.
5,, it is characterized in that directly on paddy field or ground by the downward exciting of blast air chamber mouth according to claim 1,2 described.
6, according to claim 1,2 described, it is characterized in that control blast gas port direction, produce shear wave source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92109667 CN1083224A (en) | 1992-08-27 | 1992-08-27 | Gas explosion seismic source and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92109667 CN1083224A (en) | 1992-08-27 | 1992-08-27 | Gas explosion seismic source and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1083224A true CN1083224A (en) | 1994-03-02 |
Family
ID=4944287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92109667 Pending CN1083224A (en) | 1992-08-27 | 1992-08-27 | Gas explosion seismic source and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1083224A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100456035C (en) * | 2005-12-29 | 2009-01-28 | 中国葛洲坝集团股份有限公司 | Blast source based dam nondestructive detecting system |
| CN103995285A (en) * | 2014-05-28 | 2014-08-20 | 中国石油集团东方地球物理勘探有限责任公司 | Air gun excitation working method |
| CN104595925A (en) * | 2015-02-04 | 2015-05-06 | 中国海洋石油总公司 | Air gun source ignition device |
| 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 |
| CN110794451A (en) * | 2019-09-23 | 2020-02-14 | 惠州学院 | Geophysical prospecting continuously controllable seismic source device |
| 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 |
| CN114114386A (en) * | 2021-12-24 | 2022-03-01 | 中油奥博(成都)科技有限公司 | Transverse wave seismic source device based on gas explosion seismic source cavity and seismic data acquisition method |
| CN117055096A (en) * | 2023-10-11 | 2023-11-14 | 煤炭科学研究总院有限公司 | Pneumatic drop hammer type vibration source excitation device |
-
1992
- 1992-08-27 CN CN 92109667 patent/CN1083224A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100456035C (en) * | 2005-12-29 | 2009-01-28 | 中国葛洲坝集团股份有限公司 | Blast source based dam nondestructive detecting system |
| CN103995285A (en) * | 2014-05-28 | 2014-08-20 | 中国石油集团东方地球物理勘探有限责任公司 | Air gun excitation working method |
| CN104595925A (en) * | 2015-02-04 | 2015-05-06 | 中国海洋石油总公司 | Air gun source ignition device |
| CN110794451A (en) * | 2019-09-23 | 2020-02-14 | 惠州学院 | Geophysical prospecting continuously controllable seismic source device |
| 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 |
| US11994637B2 (en) | 2021-12-08 | 2024-05-28 | Bgp Inc., China National Petroleum Corporation | Devices for full-wave field seismic source based on gas explosion technologies and methods for acquiring seismic data |
| CN114114386A (en) * | 2021-12-24 | 2022-03-01 | 中油奥博(成都)科技有限公司 | Transverse wave seismic source device based on gas explosion seismic source cavity and seismic data acquisition method |
| CN114114386B (en) * | 2021-12-24 | 2023-05-26 | 中油奥博(成都)科技有限公司 | Transverse wave source device based on air explosion source cavity and seismic data acquisition method |
| CN117055096A (en) * | 2023-10-11 | 2023-11-14 | 煤炭科学研究总院有限公司 | Pneumatic drop hammer type vibration source excitation device |
| CN117055096B (en) * | 2023-10-11 | 2023-12-26 | 煤炭科学研究总院有限公司 | Pneumatic drop hammer type vibration source excitation device |
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