CN204457597U - Bridging plug gunpowder structure - Google Patents
Bridging plug gunpowder structure Download PDFInfo
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- CN204457597U CN204457597U CN201520108966.7U CN201520108966U CN204457597U CN 204457597 U CN204457597 U CN 204457597U CN 201520108966 U CN201520108966 U CN 201520108966U CN 204457597 U CN204457597 U CN 204457597U
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- gunpowder
- bridging plug
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Abstract
The utility model discloses a kind of bridging plug gunpowder structure, be made up of housing, main gunpowder, flammable point gunpowder circle, described housing cavity is blind hole structure, and main gunpowder is arranged in blind hole, and flammable point gunpowder circle is positioned at opening in shell end, and coordinates with main gunpowder.The utility model sparking mode reliability, can control the burning velocity of bridging plug gunpowder, ensures that bridging plug successfully sets.
Description
Technical field
The utility model relates to a kind of bridging plug gunpowder structure, is applicable to Oil/gas Well cable transfer perforation (WCP) field, coordinates electric cable bridge plug setting tool to realize bridging plug and sets operation.
Background technology
Electric cable bridge plug sets in operations such as being widely used in Oil/gas Well zonal testing, separate zone production and lost-circulation zone shutoff.Its principle is the bridging plug one-level gunpowder ignited in electric cable bridge plug setting tool by cable, bridging plug one-level gunpowder exports energy and to ignite bridging plug secondary gunpowder, bridging plug secondary gunpowder ignites bridging plug three grades of gunpowder (be called for short bridging plug gunpowder) again, bridging plug gunpowder is in combustion barrel combustion, piston in the high temperature and high pressure gas promotion cable setting tool produced and piston rod movement, the thrust cylinder in piston rod and cable setting tool is made to produce relative displacement, relative displacement finally acts on the upper of bridging plug, on lower slips, on, lower slips crush seal packing element, cartridge is out of shape, realize shutoff function.In last cable setting tool in combustion barrel gaseous-pressure reach in bridging plug break ring break force value, thus break ring, realize setting completely.
To set operation process known for electric cable bridge plug in sum, and after whether bridging plug gunpowder can normally be ignited and burn, whether gaseous-pressure is enough broken in bridging plug and broken ring and become electric cable bridge plug and set job success's whether key.Traditional electric cable bridge plug sets in operation the biography fire sequence that bridging plug one-level gunpowder, bridging plug secondary gunpowder and bridging plug gunpowder must be used such, and often kind of gunpowder is stand-alone product, indispensable.There is following shortcoming in such biography fire sequence:
1, the flame transfer dependability of bridging plug secondary gunpowder and bridging plug gunpowder is lower: have between traditional bridging plug secondary gunpowder and bridging plug gunpowder and necessarily pass fiery distance, and combustion product moves along the opposite direction of combustion propagation in powder burning process, need higher initial ignition energy when bridging plug gunpowder ignites in addition, these 3 factors directly cause the ignite reliability of bridging plug gunpowder of bridging plug secondary gunpowder lower.
2, bridging plug powder burning stability is lower: because the ignite reliability of bridging plug gunpowder of bridging plug secondary gunpowder is lower, and burning capacity uniformity that bridging plug secondary gunpowder exports is poor to cause bridging plug gunpowder to receive, and finally causes bridging plug gunpowder unstable in burning initial stage combustion speed.
3, traditional bridging plug sets that priming system kind used in operation process is more, and cost is higher, and assembling is complicated.
Summary of the invention
The purpose of this utility model is the problems referred to above overcoming prior art existence, provides a kind of bridging plug gunpowder structure.The utility model sparking mode reliability, can control the burning velocity of bridging plug gunpowder, ensures that bridging plug successfully sets.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of bridging plug gunpowder structure, is characterized in that: be made up of housing, main gunpowder, flammable point gunpowder circle, described housing cavity is blind hole structure, and main gunpowder is arranged in blind hole, and flammable point gunpowder circle is positioned at opening in shell end, and coordinates with main gunpowder.
The aperture φ 33mm of described blind hole, blind hole length 312mm.
Described main gunpowder adopts vacuum casting process to inject and is arranged in housing.
Described flammable point gunpowder circle employing press-fits method press-in and is arranged in housing.
Employing the utility model has the advantage of:
1, the utility model possesses high reliability.The utility model adopts the structure increasing a kind of flammable point gunpowder circle in bridging plug gunpowder main gunpowder front end, there is the biography fire sequence of ignition charge, pyrotechnic composition, what receive is Combustion Energy, the thermal-flame exported and gas, ensure that the amplification step by step of ignition energy, shorten the distance that burning capacity is passed to main gunpowder in bridging plug gunpowder, improve main gunpowder by the reliability of igniting.
2, the utility model possesses higher combustion stability.The utility model, while the main gunpowder of raising ignites reliability, effectively ensure that main gunpowder receives the uniformity of primary power, improves the combustion stability at main powder burning initial stage.
3, adopt the utility model, can not use bridging plug secondary gunpowder, set operation relative to traditional bridging plug, priming system quantity used reduces, and cost reduces, and it is more convenient to assemble.
Accompanying drawing explanation
Fig. 1 is the utility model shell structure schematic diagram
Fig. 2 is the utility model structural representation
Fig. 3 is electric cable bridge plug setting tool bridging plug gunpowder part assembling schematic diagram
Be labeled as in figure: 1, housing, 2, blind hole, 3, main gunpowder, 4, flammable point gunpowder circle, 5, bridging plug one-level gunpowder, 6, igniting coyote hole, 7, bridging plug gunpowder structure, 8, cartridge case shell.
Detailed description of the invention
Embodiment 1
A kind of bridging plug gunpowder structure, be made up of housing 1, main gunpowder 3, flammable point gunpowder circle 4, described housing 1 inner chamber is blind hole structure, and main gunpowder is arranged in blind hole 2, and flammable point gunpowder circle 4 is positioned at housing 1 perforate end, and coordinates with main gunpowder 3.
The preferred embodiment of the present embodiment is, the aperture φ 33mm of described blind hole 2, blind hole 2 length 312mm.
The another preferred embodiment of the present embodiment is, described main gunpowder 3 adopts vacuum casting process to inject and is arranged in housing 1.
The another preferred embodiment of the present embodiment is, described flammable point gunpowder circle 4 employing press-fits method press-in and is arranged in housing 1.
Embodiment 2
The utility model is made up of housing 1, main gunpowder 3 and flammable point gunpowder circle 4.Blind hole 2 is provided with, aperture φ 33mm, length 312mm in housing 1.Case material is existing nonmetals, has fire-retardant, the adiabatic and easy advantage such as processing.
Main gunpowder 3 is existing high temperature resistant pyrotechnic composition, and temperature resistant grade is more than or equal to 160 DEG C/4h.Size of powder charge φ 33 × 295 (external diameter × highly), explosive payload 500g, adopts vacuum casting process to inject in housing.Main gunpowder not easily ignites, its ignition temperature compared with high, combustion speed compared with slow, to produce gas many.
Flammable point gunpowder circle 4 is made up of the high temperature resistant pyrotechnic composition of existing high temperature resistant ignition charge, and temperature resistant grade is all more than or equal to 160 DEG C/4h.Flammable point gunpowder circle 4 is positioned at housing 1 perforate end, is close to main gunpowder.Employing press-fits in method press-in housing 1.In flammable point gunpowder circle 4, ignition charge easily ignites, and its ignition temperature is high, combustion speed is fast.In flammable point gunpowder circle, the relatively main gunpowder of pyrotechnic composition is easy to ignite, and its ignition temperature is higher, combustion speed is very fast, it is more to produce gas.
In flammable point gunpowder circle, powder charge is of a size of φ 18.5mm × 15.5mm (external diameter × highly), and explosive payload is 13g; Pyrotechnic composition is of a size of φ 33mm × 7.25mm × 15.5mm (external diameter × thickness × highly), and explosive payload is 20g.
The utility model is used for electric cable bridge plug and sets in operation, is assemblied in electric cable bridge plug setting tool combustion chamber, produces high temperature and high pressure gas after burning, provide power for bridging plug sets operation.Its concrete assembling process following (assembling of priming system part is only described, all the other mechanical part assembling processes are slightly):
As shown in Figure 3, by bridging plug one-level gunpowder 5 load point powder chamber 6; Again bridging plug gunpowder structure 7 is loaded cartridge case shell 8; Finally the bridging plug setting tool igniter head having filled igniting coyote hole 6 is screwed into cartridge case shell 8, tightens and put in place.Stube cable bridging plug sets working pipe string, then by pipe string G.I.H precalculated position.
Operating principle of the present utility model is as follows:
As shown in Figure 2, in bridging plug gunpowder structure, flammable point gunpowder circle is ignited after receiving bridging plug one-level gunpowder or bridging plug secondary gunpowder output burning capacity.The conflagration of flammable point gunpowder circle produces high temperature and high pressure gas and to ignite main gunpowder in bridging plug gunpowder again, main gunpowder burns with certain speed and produces high temperature and high pressure gas, promote the piston in setting instrument and piston rod movement, for the setting operation of bridging plug provides power, until complete bridging plug to set operation.
Claims (4)
1. a bridging plug gunpowder structure, it is characterized in that: be made up of housing (1), main gunpowder (3), flammable point gunpowder circle (4), described housing (1) inner chamber is blind hole structure, main gunpowder (3) is arranged in blind hole (2), flammable point gunpowder circle (4) is positioned at housing (1) perforate end, and coordinates with main gunpowder (3).
2. bridging plug gunpowder structure according to claim 1, is characterized in that: the aperture φ 33mm of described blind hole (2), blind hole length 312mm.
3. bridging plug gunpowder structure according to claim 1 and 2, is characterized in that: described main gunpowder (3) adopts vacuum casting process to inject and is arranged in housing (1).
4. bridging plug gunpowder structure according to claim 1 and 2, is characterized in that: the employing of described flammable point gunpowder circle (4) press-fits method press-in and is arranged in housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520108966.7U CN204457597U (en) | 2015-02-15 | 2015-02-15 | Bridging plug gunpowder structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520108966.7U CN204457597U (en) | 2015-02-15 | 2015-02-15 | Bridging plug gunpowder structure |
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| CN204457597U true CN204457597U (en) | 2015-07-08 |
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| CN201520108966.7U Active CN204457597U (en) | 2015-02-15 | 2015-02-15 | Bridging plug gunpowder structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281635A (en) * | 2018-09-29 | 2019-01-29 | 西南石油大学 | A kind of explosion excitation formula downhole annular blowout preventer |
| CN111005702A (en) * | 2019-12-31 | 2020-04-14 | 陕西海格瑞恩实业有限公司 | Novel-sleeved integrated seat sealing tool soluble magnesium alloy bridge plug |
| CN113090223A (en) * | 2019-12-23 | 2021-07-09 | 中国石油天然气股份有限公司 | Setting tool and setting method |
| CN114286884A (en) * | 2019-08-13 | 2022-04-05 | 狩猎巨人公司 | Power explosive-filling ignition device |
-
2015
- 2015-02-15 CN CN201520108966.7U patent/CN204457597U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281635A (en) * | 2018-09-29 | 2019-01-29 | 西南石油大学 | A kind of explosion excitation formula downhole annular blowout preventer |
| CN114286884A (en) * | 2019-08-13 | 2022-04-05 | 狩猎巨人公司 | Power explosive-filling ignition device |
| US11933595B2 (en) | 2019-08-13 | 2024-03-19 | Hunting Titan, Inc. | Power charge ignition |
| CN113090223A (en) * | 2019-12-23 | 2021-07-09 | 中国石油天然气股份有限公司 | Setting tool and setting method |
| CN113090223B (en) * | 2019-12-23 | 2022-06-03 | 中国石油天然气股份有限公司 | Setting tool and setting method |
| CN111005702A (en) * | 2019-12-31 | 2020-04-14 | 陕西海格瑞恩实业有限公司 | Novel-sleeved integrated seat sealing tool soluble magnesium alloy bridge plug |
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