CN113008090B - Application of high-voltage electromagnetic blasting device in shale gas shale oil well development - Google Patents
Application of high-voltage electromagnetic blasting device in shale gas shale oil well development Download PDFInfo
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- CN113008090B CN113008090B CN202110228908.8A CN202110228908A CN113008090B CN 113008090 B CN113008090 B CN 113008090B CN 202110228908 A CN202110228908 A CN 202110228908A CN 113008090 B CN113008090 B CN 113008090B
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- blasting
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- shale
- blasting cartridge
- tungsten rod
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- 238000005422 blasting Methods 0.000 title claims abstract description 155
- 239000003079 shale oil Substances 0.000 title claims description 31
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 94
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 94
- 239000010937 tungsten Substances 0.000 claims abstract description 94
- 238000010891 electric arc Methods 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims description 25
- 239000002184 metal Substances 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000003129 oil well Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 33
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000004880 explosion Methods 0.000 description 6
- 239000011435 rock Substances 0.000 description 6
- 239000002360 explosive Substances 0.000 description 5
- 239000003345 natural gas Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/263—Methods for stimulating production by forming crevices or fractures using explosives
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/04—Blasting cartridges, i.e. case and explosive for producing gas under pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
Abstract
The invention discloses an application of a high-voltage electromagnetic blasting device in shale gas oil well development, which comprises a blasting cartridge, an upper tungsten needle, a lower tungsten rod and a cable, wherein a plurality of guide holes are formed in the side wall of the blasting cartridge and are communicated with the inside and the outside of the blasting cartridge; when in blasting, an external power supply releases high-voltage current, an electric arc is inspired between an upper tungsten needle and a lower tungsten rod, blasting media filled in a blasting cartridge are instantaneously gasified to cause blasting force to punch out from a guide hole and blast the well wall of a shale gas well.
Description
Technical Field
The invention relates to the technical field of high-voltage electromagnetic blasting, in particular to application of a high-voltage electromagnetic blasting device in shale gas shale oil well development.
Background
Shale gas refers to natural gas that is primarily thermally mature cracking or biological and that interacts with and is enriched in organic-rich shale. The gas source rock for generating shale gas can be dark shale, shale and silt interbedded, silt siltstone, silt sandstone and the like. Natural gas generated in shale is partially transported and aggregated from shale to porous permeable rocks such as sandstone and carbonate rock under the action of continuous pressure, so that a conventional gas reservoir such as a structure or lithology is formed, a considerable part of the natural gas is stored in shale intervals, and the natural gas directly stored in shale stratum is called shale gas.
Shale oil refers to petroleum resources contained in shale-based shale formations. Including the oil in the shale pores and cracks, and also including the oil resources in adjacent layers and formations of tight carbonates or clastic rocks in the shale layer.
Unlike ordinary rock, shale is a sedimentary rock, like a book, that is a piece by piece. The shale gas shale oil is not sealed in a reservoir trap like conventional natural gas, but is more like water in a sponge and hidden in pores of shale, so that the shale gas shale oil is required to be obtained by adopting transverse exploitation, namely transverse drilling in a horizontal direction on an underground shale layer, so that the shale is cracked slightly, and the shale gas shale oil is released. However, shale gas shale oil is deeply buried in the ground with the depth of 1500 meters, and the shale is required to be cracked, so that the implementation of blasting in the ground by using a common explosive blasting technology is quite unrealistic, and the common blasting is impossible due to temperature, pressure and moist environment.
Therefore, how to develop a new blasting method to adapt to the temperature, pressure and humid environment of the underground with the depth of 1500 meters is always a difficulty in the development of shale gas shale oil wells.
Disclosure of Invention
The embodiment of the invention provides an application of a high-voltage electromagnetic force blasting device in shale gas shale oil well development, which comprises a blasting cartridge 1, an upper tungsten needle 2, a lower tungsten rod 3 and a cable 4, wherein the blasting cartridge 1 is a thick-wall cylinder, a plurality of guide holes 5 are formed in the side wall of the blasting cartridge 1 and are communicated with the inside and the outside of the blasting cartridge 1, a top cover 6 is connected to the top of the blasting cartridge 1 in a threaded manner, a base 7 is connected to the bottom of the blasting cartridge 1 in a threaded manner, the upper tungsten needle 2 and the lower tungsten rod 3 are in a cylindrical shape made of metal tungsten, the upper tungsten needle 2 and the lower tungsten rod 3 are mutually insulated, one end of the cable 4 penetrates through a through hole in the top cover 6 and then stretches into the blasting cartridge 1, the anode and the cathode of one end of the cable 4 stretching into the blasting cartridge 1 are respectively connected with the upper tungsten needle 2 and the lower tungsten rod 3, and the other end of the cable 4 is connected to an external power supply 8; during blasting, an external power supply 8 releases high-voltage current, an electric arc is inspired between an upper tungsten needle 2 and a lower tungsten rod 3, a blasting medium 9 filled in the blasting cartridge 1 is instantaneously gasified, and blasting force is initiated to punch out from a guide hole 5 and blast the well wall of the shale gas well; during blasting, an external power supply 8 instantly releases 5000-30000V of high-voltage current through a high-voltage capacitor to instantly gasify and detonate a blasting medium 9 in a narrow space of the blasting cartridge 1, strong impact force is generated to have stronger blasting effects than those of an equal-volume high explosive, guide holes 5 with different directions, different sizes and different angles can form different blasting effects, an upper tungsten needle 2 and a lower tungsten rod 3 can be intact after blasting, blasting can be repeatedly performed for multiple times, and the requirements of repeated blasting and repeated blasting in the condition of temperature, pressure and moist environment of the underground of 1500 meters are met so as to crack shale a little by little and release shale gas.
Preferably, the blasting medium 9 comprises water; the water is gasified instantaneously to generate high temperature and high pressure to generate explosion at the moment of explosion, namely the explosion effect which is not inferior to that of the original high explosive can be generated by adopting water only.
Preferably, the upper tungsten needle 2 and the lower tungsten rod 3 are coaxial with the blasting cartridge 1; the upper tungsten needle 2 and the lower tungsten rod 3 are ensured to be positioned on the axis of the blasting cartridge 1, and the blasting force is uniform during blasting and is punched out of the guide hole 5, so that the optimal blasting effect is achieved.
More preferably, the heads of the upper tungsten needle 2 and the lower tungsten rod 3 are opposite to each other, the upper tungsten needle 2 is positioned above the lower tungsten rod 3, the tail of the upper tungsten needle 2 is connected to the positive electrode of the external power supply 8, and the tail of the lower tungsten rod 3 is connected to the negative electrode of the external power supply 8.
Preferably, the bottom of the lower tungsten rod 3 is connected with a metal corrugated pipe 10 coaxial with the lower tungsten rod 3, the bottom of the metal corrugated pipe 10 is fixedly connected with the upper surface of the base 7, and the metal corrugated pipe 10 can absorb pressure downwards along the axial direction to release elasticity upwards; during blasting, the metal corrugated pipe 10 is extruded by blasting force to shrink downwards to absorb pressure, the distance between the upper tungsten needle 2 and the lower tungsten rod 3 is pulled, the metal corrugated pipe 10 is released to be restored upwards after blasting is finished, the position before blasting is restored, and the next blasting can be performed at any time after the blasting medium 9 is supplemented.
Preferably, the metal bellows 10 is electrically connected with the blasting cartridge 1, an insulating sleeve 11 is arranged between the upper tungsten needle 2 and the blasting cartridge 1, the positive electrode of the cable 4 is electrically connected with the upper tungsten needle 2, and the negative electrode of the cable 4 is electrically connected to the lower tungsten rod 3 after passing through the blasting cartridge 1, the base 7 and the metal bellows 10 in sequence.
Preferably, a hanging ring 12 is arranged on the end face of the top cover 6 side of the blasting cartridge 1, and the hanging ring 12 is used for pulling the blasting cartridge 1 to move by a steel rope.
The beneficial effects of the invention are as follows:
according to the invention, the upper tungsten needle and the lower tungsten rod are opposite to each other through the high-voltage electromagnetic force blasting device, and blasting media are injected into the thick-wall cylindrical blasting cartridge provided with the guide hole, so that the blasting media in the blasting cartridge are instantaneously gasified during blasting, huge high-temperature high-pressure blasting force is generated to explode and detonate the blasting holes outwards from the guide hole, the traditional blasting is replaced, the new generation explosive-free blasting technology is realized, and the requirements that the shale is blasted a little by little and repeatedly in a condition that the shale gas shale oil is deeply buried under the condition of temperature, pressure and humidity at the depth of 1500 meters are rapidly and effectively realized, so that the shale is blasted a little by little, and the shale gas shale oil is released are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments of the present invention or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front cross-sectional view of an application of a high-pressure electromagnetic blasting apparatus of the present invention in shale gas shale oil well development;
FIG. 2 is an overall exploded view of the present invention;
fig. 3 is a partially exploded perspective view of the cartridge.
In the figure, 1, a blasting cartridge; 2. a tungsten needle is arranged; 3. a lower tungsten rod; 4. a cable; 5. a guide hole; 6. a top cover; 7. a base; 8. an external power source; 9. blasting a medium; 10. a metal bellows; 11. an insulating sleeve; 12. and (5) hanging rings.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the embodiments of the present invention and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the embodiments of the present invention will be understood by those of ordinary skill in the art according to specific circumstances.
The embodiment of the invention provides an application of a high-voltage electromagnetic force blasting device in shale gas shale oil well development, which comprises a blasting cartridge 1, an upper tungsten needle 2, a lower tungsten rod 3 and a cable 4, wherein the blasting cartridge 1 is a thick-wall cylinder, a plurality of guide holes 5 are formed in the side wall of the blasting cartridge 1 and are communicated with the inside and the outside of the blasting cartridge 1, a top cover 6 is connected to the top of the blasting cartridge 1 in a threaded manner, a base 7 is connected to the bottom of the blasting cartridge 1 in a threaded manner, the upper tungsten needle 2 and the lower tungsten rod 3 are in a cylindrical shape made of metal tungsten, the upper tungsten needle 2 and the lower tungsten rod 3 are mutually insulated, one end of the cable 4 penetrates through a through hole in the top cover 6 and then stretches into the blasting cartridge 1, the anode and the cathode of one end of the cable 4 stretching into the blasting cartridge 1 are respectively connected with the upper tungsten needle 2 and the lower tungsten rod 3, and the other end of the cable 4 is connected to an external power supply 8; during blasting, an external power supply 8 releases high-voltage current, an electric arc is inspired between an upper tungsten needle 2 and a lower tungsten rod 3, a blasting medium 9 filled in the blasting cartridge 1 is instantaneously gasified, and blasting force is initiated to punch out from a guide hole 5 and blast the well wall of the shale gas well; during blasting, an external power supply 8 instantly releases 5000-30000V of high-voltage current through a high-voltage capacitor to instantly gasify and detonate a blasting medium 9 in a narrow space of the blasting cartridge 1, strong impact force is generated to have stronger blasting effects than those of an equal-volume high explosive, guide holes 5 with different directions, different sizes and different angles can form different blasting effects, an upper tungsten needle 2 and a lower tungsten rod 3 can be intact after blasting, blasting can be repeatedly performed for multiple times, and the requirements of repeated blasting and repeated blasting in the condition of temperature, pressure and moist environment of the underground of 1500 meters are met so as to crack shale a little by little and release shale gas.
Further, the blasting medium 9 comprises water; the water is gasified instantaneously to generate high temperature and high pressure to generate explosion at the moment of explosion, namely the explosion effect which is not inferior to that of the original high explosive can be generated by adopting water only.
Further, the upper tungsten needle 2 and the lower tungsten rod 3 are coaxial with the blasting cartridge 1; the upper tungsten needle 2 and the lower tungsten rod 3 are ensured to be positioned on the axis of the blasting cartridge 1, and the blasting force is uniform during blasting and is punched out of the guide hole 5, so that the optimal blasting effect is achieved.
Further, the heads of the upper tungsten needle 2 and the lower tungsten rod 3 are opposite to each other, the upper tungsten needle 2 is positioned above the lower tungsten rod 3, the tail of the upper tungsten needle 2 is connected to the positive electrode of the external power supply 8, and the tail of the lower tungsten rod 3 is connected to the negative electrode of the external power supply 8.
Further, the bottom of the lower tungsten rod 3 is connected with a metal corrugated pipe 10 coaxial with the lower tungsten rod 3, the bottom of the metal corrugated pipe 10 is fixedly connected with the upper surface of the base 7, and the metal corrugated pipe 10 can absorb pressure downwards along the axial direction to release elasticity upwards; during blasting, the metal corrugated pipe 10 is extruded by blasting force to shrink downwards to absorb pressure, the distance between the upper tungsten needle 2 and the lower tungsten rod 3 is pulled, the metal corrugated pipe 10 is released to be restored upwards after blasting is finished, the position before blasting is restored, and the next blasting can be performed at any time after the blasting medium 9 is supplemented.
Further, the metal corrugated tube 10 is electrically connected with the blasting cartridge 1, an insulating sleeve 11 is arranged between the upper tungsten needle 2 and the blasting cartridge 1, the positive electrode of the cable 4 is electrically connected with the upper tungsten needle 2, and the negative electrode of the cable 4 is electrically connected to the lower tungsten rod 3 after sequentially passing through the blasting cartridge 1, the base 7 and the metal corrugated tube 10.
Further, a hanging ring 12 is arranged on the end face of one side of the top cover 6 of the blasting cartridge 1, and the hanging ring 12 is used for pulling the blasting cartridge 1 to move by a steel rope.
Examples
When the device is actually used, firstly, the blasting device is put into a beaten shale gas shale oil well, so that the bottom of the blasting cartridge 1 forwards reaches a preset blasting position, preferably the deepest part of the shale gas shale oil well, and then the next blasting is carried out after a certain distance is withdrawn after each blasting is completed until all shale in the whole shale gas shale oil well is broken from inside to outside from deep to shallow; secondly, injecting blasting media 9 (water is the most convenient and easily available blasting media) into the external space of the blasting cartridge 1 through the shale gas shale oil well, and filling the whole blasting cartridge 1 through the guide hole; the third step, sealing and increasing a certain pressure at the wellhead of the shale gas shale oil well, wherein the pressure of the shale gas shale oil well is higher than the wellhead pressure, and the fourth step, switching on an external power supply 8 to the cable 4; and fifthly, an external power supply 8 is turned on, high-voltage current inspires an electric arc between the upper tungsten needle 2 and the lower tungsten rod 3 to instantly gasify a blasting medium 9, blasting is initiated in the shale gas shale oil well, blasting impact force is punched out through the guide hole 5 and blasts the well wall of the shale gas shale oil well, nearby shale is cracked, meanwhile, the metal bellows 10 is extruded by the blasting force to shrink downwards to absorb pressure, the metal bellows 10 releases elastic force to return upwards after blasting is finished, and the position before blasting is restored to be finished. The follow-up process only needs to pull the blasting cartridge 1 through the hanging ring 12 to retract step by step, and the shale along the way is cracked by a little after one-time reread detonation while retracting, so that the shale gas shale oil release requirement is met.
In summary, the application of the high-voltage electromagnetic force blasting device in shale gas shale oil well development provided by the invention is characterized in that the blasting medium is instantaneously gasified in a closed blasting hole by the high-voltage electromagnetic force blasting device to generate huge high-temperature high-pressure impact force for blasting, so that a new generation of explosive-free blasting technology is realized, and the requirements of continuous repeated blasting and repeated blasting to crack shale slightly and release shale gas shale oil are rapidly and effectively realized in a temperature, pressure and moist environment where shale gas shale oil is deeply buried in the ground with the depth of 1500 meters, so that the high-voltage electromagnetic force blasting device has wide application prospect.
In this specification, each embodiment is described in a progressive manner, and the same or similar parts of each embodiment are referred to each other, and each embodiment is mainly described as a difference from other embodiments.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the present invention; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (5)
1. The application of the high-voltage electromagnetic force blasting device in shale gas shale oil well development is characterized by comprising a blasting cartridge (1), an upper tungsten needle (2), a lower tungsten rod (3) and a cable (4), wherein the blasting cartridge (1) is a thick-wall cylinder, a plurality of guide holes (5) are formed in the side wall of the blasting cartridge (1) and are communicated with the inside and the outside of the blasting cartridge (1), a top cover (6) is connected to the top of the blasting cartridge (1) in a threaded manner, a base (7) is connected to the bottom of the blasting cartridge (1) in a threaded manner, the upper tungsten needle (2) and the lower tungsten rod (3) are cylindrical made of metal tungsten, the upper tungsten needle (2) and the lower tungsten rod (3) are mutually insulated, one end of the cable (4) penetrates through a through hole in the top cover (6) and then stretches into the blasting cartridge (1), the anode and the cathode of one end of the cable (4) stretches into the blasting cartridge (1) and is respectively connected with the upper tungsten needle (2) and the lower tungsten rod (3), and the other end of the cable (4) is connected to an external power supply (8);
during blasting, the external power supply (8) releases high-voltage current, and an electric arc is inspired between the upper tungsten needle (2) and the lower tungsten rod (3) to instantaneously gasify blasting media (9) filled in the blasting cartridge (1) to trigger blasting force to punch out from the guide hole (5) and blast the well wall of the shale gas well;
-the blasting medium (9) comprises water;
the upper tungsten needle (2) and the lower tungsten rod (3) are coaxial with the blasting cartridge (1).
2. The application of the high-voltage electromagnetic blasting device in shale gas and shale oil well development according to claim 1, wherein the upper tungsten needle (2) and the lower tungsten rod (3) are opposite to each other in head, the upper tungsten needle (2) is located above the lower tungsten rod (3), the tail of the upper tungsten needle (2) is connected to the positive electrode of an external power supply (8), and the tail of the lower tungsten rod (3) is connected to the negative electrode of the external power supply (8).
3. The application of the high-voltage electromagnetic blasting device in shale gas and shale oil well development according to claim 1, wherein a metal corrugated pipe (10) coaxial with the lower tungsten rod (3) is connected to the bottom of the lower tungsten rod (3), the bottom of the metal corrugated pipe (10) is fixedly connected with the upper surface of the base (7), and the metal corrugated pipe (10) can absorb pressure downwards along the axial direction to release elastic force upwards.
4. The application of the high-voltage electromagnetic blasting device in shale gas and shale oil well development according to claim 3, wherein the metal corrugated tube (10) is electrically connected with the blasting cartridge (1), an insulating sleeve (11) is arranged between the upper tungsten needle (2) and the blasting cartridge (1), the positive electrode of the cable (4) is electrically connected with the upper tungsten needle (2), and the negative electrode of the cable (4) is electrically connected to the lower tungsten rod (3) after passing through the blasting cartridge (1), the base (7) and the metal corrugated tube (10) in sequence.
5. The application of the high-voltage electromagnetic blasting device in shale gas and shale oil well development according to claim 1, wherein the end face of the top cover (6) side of the blasting cartridge (1) is provided with a hanging ring (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110228908.8A CN113008090B (en) | 2021-03-02 | 2021-03-02 | Application of high-voltage electromagnetic blasting device in shale gas shale oil well development |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110228908.8A CN113008090B (en) | 2021-03-02 | 2021-03-02 | Application of high-voltage electromagnetic blasting device in shale gas shale oil well development |
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| CN113008090A CN113008090A (en) | 2021-06-22 |
| CN113008090B true CN113008090B (en) | 2023-11-28 |
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| CN115127593B (en) * | 2022-08-30 | 2023-01-20 | 中国石油天然气集团有限公司 | Shale oil in-situ development small-pitch magnetic steering drilling test simulation device and method |
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| CN109813184A (en) * | 2019-03-28 | 2019-05-28 | 三明科飞产气新材料股份有限公司 | A kind of broken rock gas generator and gas-forming agent rock breaking method |
| CN111396049A (en) * | 2020-03-23 | 2020-07-10 | 中国矿业大学(北京) | Safe and environment-friendly rock blasting device and method |
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2021
- 2021-03-02 CN CN202110228908.8A patent/CN113008090B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5482357A (en) * | 1995-02-28 | 1996-01-09 | Noranda, Inc. | Plasma blasting probe assembly |
| CN102422120A (en) * | 2009-03-11 | 2012-04-18 | 塞瓦技术公司 | Gas generator including a non-pyrotechnic energising device |
| CN106225587A (en) * | 2016-08-31 | 2016-12-14 | 郭远军 | A kind of orientation gas blast device that can reuse and manufacture method thereof |
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| CN113008090A (en) | 2021-06-22 |
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