CN115492559B - Composite sand-proof perforating bullet - Google Patents
Composite sand-proof perforating bullet Download PDFInfo
- Publication number
- CN115492559B CN115492559B CN202211431505.4A CN202211431505A CN115492559B CN 115492559 B CN115492559 B CN 115492559B CN 202211431505 A CN202211431505 A CN 202211431505A CN 115492559 B CN115492559 B CN 115492559B
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- Prior art keywords
- explosive
- liner
- cover
- filling
- main
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- 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
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
-
- 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
- E21B43/11—Perforators; Permeators
- E21B43/119—Details, e.g. for locating perforating place or direction
Abstract
The invention discloses a composite sand-prevention perforating bullet, which belongs to the field of perforating bullets and comprises a shell, a first explosive type cover, a second explosive type cover and a third explosive type cover, wherein a first main explosive is arranged between the first explosive type cover and the second explosive type cover, a second main explosive is arranged between the second explosive type cover and the third explosive type cover, a third main explosive is arranged between the third explosive type cover and the shell, a detonator is sleeved inside a sleeve, and booster explosives are filled inside two pre-buried holes.
Description
Technical Field
The invention relates to the field of perforating bullets, in particular to a composite sand-proof perforating bullet.
Background
The perforating bullet consists of explosive, shaped charge cover and casing. The explosive provides an energy source for the work of the perforating bullet and the detonation perforation, the inside of the conventional perforating bullet usually adopts a single-layer main explosive filling form as a main part at present, the main explosive is used for crushing a explosive cover and forming jet flow after being detonated, so that the perforation of a geological soil layer is completed, and due to the difference of geological structures, when the perforating bullet completes the single-time blasting perforation, a formed jet flow channel is easily filled by falling loose silt again, the penetrating performance of the perforating bullet is limited, so that the problems that the jet flow channel is not smooth, the oil-gas productivity is low and the like are caused, and the composite sand prevention perforating bullet is provided for solving the existing problems.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a composite sand prevention perforating bullet, which has the function of multiple detonation perforation by a multi-layer composite explosive structure of a main explosive I, a main explosive II and a main explosive III arranged in a shell, is directly contacted with the main explosive I through a detonator, then the main explosive I is contacted with the main explosive II through a booster and the main explosive II is contacted with the main explosive III through a booster, so that the main explosive of the composite structure in the perforating bullet is sequentially detonated and perforated, the inside of a jet flow channel formed by the primary blasting is subjected to multiple auxiliary blasting perforation, loose silt falling from the inside of the jet flow channel is washed away, the penetration performance of the perforating bullet is improved, and the problems of unsmooth jet flow channel, low oil gas productivity and the like are prevented.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
The composite sand-prevention perforating bullet comprises a shell, a first explosive cover, a second explosive cover and a third explosive cover, wherein a first main explosive is arranged between the first explosive cover and the second explosive cover, a second main explosive is arranged between the second explosive cover and the third explosive cover, a third main explosive is arranged between the third explosive cover and the shell, a filling through hole is formed in the center of the top of the shell, a avoiding hole is formed in the center of the top of the third explosive cover, a sleeve is fixedly connected to the center of the top of the second explosive cover, the top of the sleeve extends to the inside of the filling through hole, the inside of the filling through hole is communicated with the inside of the second explosive cover through the sleeve, a detonator is sleeved inside the sleeve, pre-buried holes are formed in one side of the top of the second explosive cover and the other side of the top of the third explosive cover, and booster explosives are filled inside the pre-buried holes.
Furthermore, a limiting ring is fixedly connected to the top of the shell on one side of the filling through hole.
Furthermore, the inside cavity that is the toper structure of seting up of casing corresponds type of medicine cover one type of medicine cover two and type of medicine cover three all is the toper structure, type of medicine cover three type of medicine cover two type of medicine cover one and the height of the inside cavity of casing increases progressively in order, type of medicine cover two bottoms cup joint in three bottom peripheries of type of medicine cover, type of medicine cover one bottom cup joint in two bottom peripheries of type of medicine cover, type of medicine cover one type of medicine cover two and type of medicine cover three all cup joint in inside the casing.
Further, be provided with between shaped charge cover one and the shaped charge cover two and be used for loading main explosive first loads chamber one, shaped charge cover two with shaped charge cover three is provided with and is used for loading main explosive second loads chamber two, shaped charge cover three with be provided with between the inside cavity of casing and be used for loading main explosive third loads chamber three.
Furthermore, the primary explosive I, the primary explosive II and the primary explosive tee are connected through the booster inside the two pre-buried holes, and the bottom of the detonator is in contact with the top of the primary explosive I.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
the scheme includes that a first main explosive, a second main explosive and a third main explosive are arranged inside a shell to form a multi-layer composite explosive structure, the perforating bullet has the function of multiple-time detonation and perforation, the first main explosive is directly contacted with the first main explosive through a detonator, then the first main explosive is contacted with the second main explosive through a booster, the second main explosive is contacted with the third main explosive through the booster, sequential detonation and perforation of the main explosive of the composite structure inside the perforating bullet is achieved, multiple supplementary blasting and perforation are performed inside a jet flow channel formed by primary blasting, loose silt falling inside the jet flow channel is washed away, the penetrating performance of the perforating bullet is improved, the problems that the jet flow channel is not smooth, the oil-gas productivity is low and the like are solved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the liner of the present invention in a disassembled configuration;
fig. 3 is a schematic cross-sectional structure of the present invention.
The numbering in the figures illustrates:
1. a housing; 101. filling the through holes; 102. a limiting ring; 2. a first liner; 3. a second shaped charge liner; 301. a sleeve; 4. a third liner; 401. avoiding holes; 402. pre-burying holes; 5. a first main explosive; 6. a second main explosive; 7. a third main explosive; 8. a detonator; 9. and (4) booster.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
The embodiment is as follows:
referring to fig. 1-3, the composite sand prevention perforating bullet includes a casing 1, a first liner 2, a second liner 3 and a third liner 4, a first main explosive 5 is disposed between the first liner 2 and the second liner 3, a second main explosive 6 is disposed between the second liner 3 and the third liner 4, a third main explosive 7 is disposed between the third liner 4 and the casing 1, a filling through hole 101 is disposed at a center of a top of the casing 1, an avoiding hole 401 is disposed at a center of a top of the third liner 4, a sleeve 301 is fixedly connected to a center of a top of the second liner 3, a top of the sleeve 301 extends into the filling through hole 101, the inside of the filling through hole 101 is communicated with the inside of the second liner 3 through the sleeve 301, a detonator 8 is sleeved inside the sleeve 301, pre-buried holes 402 are disposed on one side of the top of the second liner 3 and the other side of the top of the third liner 4, and explosion-transfer explosive 9 is filled inside the two pre-buried holes 402.
The method comprises the steps of firstly connecting detonators 8 of a plurality of perforating bullets through leads, placing the perforating bullets in a gun barrel, transmitting signals to the detonators 8 through the leads during detonation, igniting a primary explosive 5 by the detonators 8, igniting the primary explosive 5 to form jet flow, crushing a primary explosive cover 2 to impact the inside of a soil layer, forming a jet flow channel inside the soil layer, igniting the primary explosive 5 after ignition in a very short time, igniting a secondary explosive 6 by a primary explosive 9, exploding the secondary explosive 6 to form jet flow, crushing a secondary explosive cover 3 to impact the inside of the jet flow channel formed in the soil layer, continuously perforating or cleaning silt in the channel by the formed shock wave, then igniting the primary explosive 5 by the primary explosive 9, exploding the primary explosive 5 to form jet flow, crushing the primary explosive cover 2, continuously impacting the inside of the formed jet flow channel, increasing the effect of the shock wave on the impact of the inside the jet flow channel, preventing the jet flow channel from falling off, and improving the jet flow efficiency.
Referring to fig. 1, a stopper ring 102 is fixedly connected to the top of the housing 1 at one side of the filling through hole 101.
The filling through hole 101 is convenient for inserting the detonator 8 into the sleeve 301 to be in butt joint with the primary explosive I5, and the limiting ring 102 can be bent to conveniently fix the lead.
Referring to fig. 2 and 3, a cavity with a conical structure is formed in the shell 1, the corresponding first liner 2, second liner 3 and third liner 4 are all conical structures, the heights of the first liner 4, second liner 3, first liner 2 and the cavity in the shell 1 sequentially increase, the bottom of the second liner 3 is sleeved on the periphery of the bottom of the third liner 4, the bottom of the first liner 2 is sleeved on the periphery of the bottom of the second liner 3, the first liner 2, the second liner 3 and the third liner 4 are all sleeved inside the shell 1, a first filling cavity for filling the first main explosive 5 is formed between the first liner 2 and the second liner 3, a second filling cavity for filling the second main explosive 6 is formed between the second liner 3 and the third liner 4, a third filling cavity for filling the third main explosive 7 is formed between the third liner 4 and the cavity in the shell 1, the first main explosive 5, the second main explosive 6 and the third main explosive 7 are in contact with a first detonator 8 through a booster hole 402, and a top detonator 8 are connected with the first main explosive 5.
Through the type of charge cover one 2 that sets up, type of charge cover two 3 and type of charge cover three 4, can be inside at casing 1 for main explosive one 5, main explosive two 6 and main explosive three 7 form the filling space, play the effect of isolation, and contact through 8 bottoms of detonator and main explosive one 5 tops, can make 8 at first main explosive 5 that ignite the outside of detonator, conveniently detonate in order, transfer and explode medicine 9 and play the effect of connecting, conveniently detonate main explosive two 6 and main explosive three 7 in order, realize that the inside ammunition of this compound perforating bullet detonates in order, to the inside impact perforation many times of jet channel.
When in use: firstly, connecting detonators 8 of a plurality of perforating bullets through leads, placing the perforating bullets in a gun barrel, transmitting signals to the detonators 8 by the leads during detonation, igniting a primary explosive 5 by the detonators 8, igniting the primary explosive 5 by the primary explosive 5 to form jet flow, crushing a primary explosive cover 2 to impact the primary explosive cover 2 to the inside of a soil layer, forming a jet flow channel in the soil layer, igniting the primary explosive 5 ignited at the same time through a booster 9 to ignite a secondary explosive 6, exploding the secondary explosive 6 to form jet flow, crushing the secondary explosive cover 3 to impact the inside of the jet flow channel formed in the soil layer, continuously perforating or cleaning sediment in the channel by the formed shock wave, then igniting the primary explosive 6 by the booster 9 to ignite the primary explosive 5, exploding the primary explosive 5 to form jet flow, crushing the primary explosive cover 2, and continuously impacting the inside of the formed jet flow channel to increase the effect of the shock wave on the impact of the inside of the jet flow channel, preventing the primary explosive from falling and improving the perforating efficiency;
the explosive cover I2, the explosive cover II 3 and the explosive cover III 4 can form a filling space for a main explosive I5, a main explosive II 6 and a main explosive III 7 inside the shell 1, play a role in isolation, and contact with the top of the main explosive I5 through the bottom of the detonator 8, so that the detonator 8 firstly ignites the main explosive I5 on the outermost side, and is convenient to detonate in sequence, the booster 9 plays a role in connection, and the main explosive II 6 and the main explosive III 7 are convenient to detonate in sequence, so that the internal ammunition of the composite perforating bullet is detonated in sequence, and the internal multi-impact perforation of a jet channel is realized.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (3)
1. Compound sand control perforating bullet, including casing (1), type of medicine cover one (2), type of medicine cover two (3) and type of medicine cover three (4), its characterized in that: a first main explosive (5) is arranged between the first liner (2) and the second liner (3), a second main explosive (6) is arranged between the second liner (3) and the third liner (4), a third main explosive (7) is arranged between the third liner (4) and the shell (1), a filling through hole (101) is formed in the center of the top of the shell (1), a relief hole (401) is formed in the center of the top of the third liner (4), a sleeve (301) is fixedly connected to the center of the top of the second liner (3), the top of the sleeve (301) extends into the filling through hole (101), the inside of the filling through hole (101) is communicated with the inside of the second liner (3) through the sleeve (301), a detonator (8) is sleeved inside the sleeve (301), pre-buried holes (402) are formed in one side of the top of the second liner (3) and the other side of the top of the third liner (4), and booster explosives (9) are filled in the two pre-buried holes (402);
a cavity with a conical structure is formed in the shell (1), the heights of the cavity corresponding to the first shaped charge liner (2), the second shaped charge liner (3) and the third shaped charge liner (4) are all conical structures, the heights of the cavity in the shell (1) are sequentially increased, the bottom of the second shaped charge liner (3) is sleeved on the periphery of the bottom of the third shaped charge liner (4), the bottom of the first shaped charge liner (2) is sleeved on the periphery of the bottom of the second shaped charge liner (3), and the first shaped charge liner (2), the second shaped charge liner (3) and the third shaped charge liner (4) are all sleeved in the shell (1);
the primary explosive I (5), the primary explosive II (6) and the primary explosive III (7) are connected through the booster (9) positioned in the two pre-buried holes (402), and the bottom of the detonator (8) is in contact with the top of the primary explosive I (5).
2. The composite sand control perforator charge of claim 1 wherein: the top of the shell (1) positioned on one side of the filling through hole (101) is fixedly connected with a limiting ring (102).
3. The composite sand control perforator charge of claim 1, wherein: the explosive type cover is characterized in that a first explosive type cover (2) and a first filling cavity (5) for filling the main explosive is formed between the second explosive type cover (3), a second explosive type cover (3) and a third explosive type cover (4) are arranged and used for filling a second filling cavity (6) for the main explosive, and a third explosive type cover (4) and a third filling cavity (7) for the main explosive are formed between the cavities inside the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211431505.4A CN115492559B (en) | 2022-11-15 | 2022-11-15 | Composite sand-proof perforating bullet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211431505.4A CN115492559B (en) | 2022-11-15 | 2022-11-15 | Composite sand-proof perforating bullet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115492559A CN115492559A (en) | 2022-12-20 |
| CN115492559B true CN115492559B (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211431505.4A Active CN115492559B (en) | 2022-11-15 | 2022-11-15 | Composite sand-proof perforating bullet |
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| Country | Link |
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| CN (1) | CN115492559B (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1286124A1 (en) * | 2001-08-20 | 2003-02-26 | Halliburton Energy Services, Inc. | Thinned-skirt shaped charge liner |
| US6925924B2 (en) * | 2003-10-14 | 2005-08-09 | Molycorp Inc. | Method and apparatus to improve perforating effectiveness using a unique multiple point initiated shaped charge perforator |
| CN106767215B (en) * | 2017-02-20 | 2018-06-12 | 南京神行者机电科技有限公司 | A kind of water-jet type destructor based on explosion Mohaupt effect destroys device |
| CN207701117U (en) * | 2017-08-21 | 2018-08-07 | 承德石油高等专科学校 | A kind of extended reach well perforation perforating bullet |
| CN107605442B (en) * | 2017-09-28 | 2020-08-11 | 中国石油天然气集团公司 | High-performance double-layer charge perforating bullet |
| CN209724302U (en) * | 2019-03-19 | 2019-12-03 | 营口瑞丰机械制造有限公司 | A kind of perforating bullet structure |
| CN210343315U (en) * | 2019-07-01 | 2020-04-17 | 营口市双龙射孔器材有限公司 | Stable perforating bullet |
| CN211448633U (en) * | 2019-09-26 | 2020-09-08 | 衡阳鸿菱石油管材有限责任公司 | Connecting joint for outer gun tube of perforating gun and perforating gun |
| CN212296322U (en) * | 2020-04-18 | 2021-01-05 | 宁波精磊汽车零部件有限公司 | Perforating bullet |
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2022
- 2022-11-15 CN CN202211431505.4A patent/CN115492559B/en active Active
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| Publication number | Publication date |
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| CN115492559A (en) | 2022-12-20 |
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