CN115370332B

CN115370332B - High-effect pressurizing perforating bullet

Info

Publication number: CN115370332B
Application number: CN202211317265.5A
Authority: CN
Inventors: 盛勇; 马良柱; 张帅; 寇小红; 赵丽娜; 解辉
Original assignee: Jilin Shuanglin Perforator Equipment Co ltd
Current assignee: Jilin Shuanglin Perforator Equipment Co ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-01-31
Anticipated expiration: 2042-10-26
Also published as: CN115370332A

Abstract

The invention discloses a high-efficiency supercharged perforating bullet, which belongs to the field of underground operation of oil exploitation, and comprises an outer sleeve, a steel bullet rack and a plurality of perforating bullet bodies, wherein the steel bullet rack is connected inside the outer sleeve in a sliding manner, the plurality of perforating bullet bodies are uniformly distributed on the inner side of the steel bullet rack, and a detonating lead is connected between two adjacent perforating bullet bodies.

Description

High-effect pressurizing perforating bullet

Technical Field

The invention relates to the field of oil exploitation downhole operation, in particular to a high-efficiency pressurizing perforating bullet.

Background

The perforator is an initiating explosive used to penetrate casing, cement sheath and formation during the perforating process. The perforating gun is the most critical part in the perforating gun, and the technical performance of the perforating gun directly influences the specific indexes of the main perforation parameters, namely the aperture and the depth.

Based on the above, the present inventors found that:

1. before the perforating bullet is used, sufficient perforating explosive is required to be filled into the perforating bullet according to factors such as the rock quality of an actual position, the depth of a perforating position, the length of a hole diameter required to be generated during perforating and the like, when the perforating explosive used in a perforating process is filled, if the inner space of a bullet body of the perforating bullet used actually is limited, after the explosive is filled into the perforating bullet, the actual perforating effect of the perforating bullet can be influenced due to the fact that the explosive amount is small during actual use;

2. when perforating at perforating bullet, for improving actual perforation effect, need a plurality of perforating bullets to perforate simultaneously, when the inside explosive of perforating bullet detonates and causes the efflux, can produce the power in opposite direction simultaneously, if the direction of perforation at this moment is the chaotic distribution, perhaps during the perforation direction of perforation is comparatively single, can cause the unidirectional power of continuation to the support body of fixed perforating bullet this moment, the support body is after long-term the use, probably leads to the support to warp when perforating bullet perforation to influence the perforation effect.

Therefore, in view of the above, research and improvement are made on the existing structure, and a high-performance pressurized perforating bullet is provided, so as to achieve the purpose of higher practical value.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a high-efficiency pressurizing perforating bullet, which can enlarge the space in which a main explosive can be filled in a bullet shell, effectively improve the filling amount of the main explosive when the explosive is filled, ensure that sufficient jet flow can be generated when perforating, ensure the due effect of the perforating bullet when in work, simultaneously effectively reduce the possibility that a support of a steel bullet rack deforms due to reverse impact force, ensure the normal use of the support of the steel bullet rack, and further ensure the actual effect of perforating of the perforating bullet.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A high-efficiency pressurized perforating bullet comprises an outer sleeve, a steel bullet rack and a plurality of perforating bullet bodies, wherein the steel bullet rack is connected inside the outer sleeve in a sliding mode, the plurality of perforating bullet bodies are distributed on the inner side of the steel bullet rack, and a detonating lead is connected between two adjacent perforating bullet bodies;

the perforating bullet body comprises a bullet shell, a shaped charge cover, an initiating explosive and a main explosive, wherein the bullet shell is clamped on the inner side of a steel bullet frame, the shaped charge cover is clamped on the inner side of the bullet shell, the initiating explosive is filled at one end of the bullet shell, and the main explosive is filled between the inner wall of the bullet shell and the shaped charge cover.

Further, the outer sleeve comprises an outer sleeve and an inner support frame, the outer sleeve is sleeved on the inner side of the inner support frame, and the outer sleeve is a thin-shell-shaped pipeline made of aluminum alloy.

Furthermore, the inner layer support frames are of steel strip structures with arc angles of 45 degrees, and the number of the inner layer support frames is four and are uniformly distributed in a circular equiangular mode.

Further, the fixed probe plate that is equipped with of one end of inlayer support frame, the section of probe plate is T type structure, just probe plate and outer sleeve pipe cooperation joint.

Furthermore, a plurality of small through holes and a plurality of large through holes are formed in the steel bullet rack, one end of the bullet shell is connected with the small through holes in a clamped mode, and the other end of the bullet shell is connected with the large through holes in a clamped mode.

Further, the central axis of steel bullet frame all has the nodical with the central axis of a plurality of shell case, four in succession little through-hole is the even equidistance distribution of spiral on the steel bullet frame, four big through-hole is the even equidistance distribution of spiral on the steel bullet frame.

Further, the steel bullet frame includes half left casing frame and half right casing frame, the inner groovy has been seted up to one side of half left casing frame, the fixed cardboard that is equipped with inner groovy cooperation joint of one side of half right casing frame.

Furthermore, an inner snap ring is fixedly arranged on one side of the inner side of the cartridge case, and the same elastic washer is fixedly connected between the inner snap ring and one side of the liner.

Furthermore, a explosive filling port is formed in one end, close to the small through hole, of the cartridge case, the primary explosive is filled in the explosive filling port, and one end of the detonating lead is fixed in the explosive filling port and is in contact with the primary explosive.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) This scheme, before the perforating bullet uses and when the targeted explosive that fills to perforating bullet inside, the explosive fills from the powder mouth that fills of shell case, then reach between the shell case is inside and the shaped charge cover, increase along with the packing of explosive amount, the explosive that increases can increase the pressure to the shaped charge cover, and compress elastic gasket, because elastic gasket's elastic property itself, can provide the activity space of shaped charge cover after the compression, and then make the shaped charge cover and the inside space increase before of shell case, and then make the inside space grow that fills main explosive of shell case, can effectively improve the packing volume of main explosive when filling the explosive, guarantee can produce the efflux of capacity when the perforation, ensure the due effect of perforating bullet during operation.

(2) According to the scheme, when the perforating bullets are subjected to a perforating process, the steel bullet rack is used for limiting and fixing the plurality of perforating bullets, the detonating positions of the plurality of perforating bullets are connected by utilizing a detonating lead at the moment, the perforating bullets can be detonated simultaneously by utilizing current signals, when the perforating bullets are detonated, the four perforating bullets form a spiral shape, in the process, the four perforating bullets sequentially generate jet flow in four directions on the same plane, reverse impact force generated by the jet flow can be pointed to the central axis of the steel rack body, certain offset can be performed between the reverse impact force at the moment, and therefore the phenomenon that the support of the steel bullet rack continuously generates large unidirectional force is avoided, in the long-term use of the support of the steel bullet rack, the possibility that the support of the steel bullet rack deforms due to the reverse impact force can be effectively reduced, the normal use of the support of the steel bullet rack is ensured, and the actual effect of perforating of the perforating bullets is further ensured.

Drawings

FIG. 1 is a schematic cross-sectional perspective view of the present invention;

FIG. 2 is a schematic view of the external appearance of the present invention;

FIG. 3 is a schematic view of the outer sleeve of the present invention;

FIG. 4 is a schematic illustration of a steel carrier of the present invention;

FIG. 5 is an enlarged view of portion A of FIG. 4 in accordance with the present invention;

FIG. 6 is a schematic illustration of an arrangement of four charge charges of the present invention;

figure 7 is a schematic illustration of a single charge body of the present invention.

The numbering in the figures illustrates:

1. an outer sleeve; 101. an outer sleeve; 102. an inner layer support frame; 1021. a probe plate;

2. a steel cartridge frame; 201. a small through hole; 202. a large through hole; 203. a left half shell frame; 2031. an inner groove; 204. a right housing half frame; 2041. clamping a plate;

3. a perforating charge body; 301. a cartridge case; 3011. an inner snap ring; 3012. an elastic washer; 3013. a medicine filling opening; 302. a liner; 303. initiating explosive; 304. a primary explosive;

4. the wire is detonated.

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 to be understood that the embodiments described are merely exemplary embodiments, rather than exemplary embodiments, and that all other embodiments may be devised by those skilled in the art without departing from the scope of the present invention.

Example (b):

referring to fig. 1-7, a high-efficiency pressurized perforating bullet comprises an outer casing 1, a steel bullet rack 2 and a plurality of perforating bullet bodies 3, wherein the steel bullet rack 2 is slidably connected inside the outer casing 1, the plurality of perforating bullet bodies 3 are uniformly distributed on the inner side of the steel bullet rack 2, and a detonating lead 4 is connected between two adjacent perforating bullet bodies 3;

uniformly and equidistantly distributing a plurality of perforating bullet bodies 3 on a steel bullet frame 2, then enabling the steel bullet frame 2 to fall along an outer sleeve 1 to reach a specified working position, and then detonating the perforating bullet bodies 3 by utilizing detonating leads 4 which are sequentially communicated to realize perforating work of the perforating bullet bodies 3;

the perforating bullet body 3 comprises a bullet shell 301, a liner 302, an initiating explosive 303 and a main explosive 304, wherein the bullet shell 301 is clamped on the inner side of the steel bullet frame 2, the liner 302 is clamped on the inner side of the bullet shell 301, the initiating explosive 303 is filled at one end of the bullet shell 301, and the main explosive 304 is filled between the inner wall of the bullet shell 301 and the liner 302;

and igniting the primary explosive 303 at one end of the cartridge case 301, extending the primary explosive 303 to the main explosive 304 filled between the inner wall of the cartridge case 301 and the liner 302, detonating the main explosive 304, and ejecting perforating jet flow from the detonated main explosive 304 to complete the perforating function of the perforating bullet.

Referring to fig. 3, the outer sleeve 1 includes an outer sleeve 101 and an inner support frame 102, the outer sleeve 101 is sleeved on the inner side of the inner support frame 102, and the outer sleeve 101 is a thin-shell-shaped pipe made of aluminum alloy;

when the aluminum alloy thin-shell-shaped pipeline is downward extended along the pore channel at the outer sleeve 1, the cylinder wall is convenient to support, and the stability of the whole device when the whole device reaches a specified position is ensured.

Referring to fig. 3, the inner layer support frames 102 are steel strip structures with an arc angle of 45 °, and the number of the inner layer support frames 102 is four and are uniformly distributed in a circular shape with an equal angle;

when perforating bullet perforation is carried out, jet flow of perforation can directly penetrate through gaps between the inner layer supporting frames 102 of the steel strip-shaped structures, and smooth ejection of the jet flow is guaranteed.

Referring to fig. 3, one end of the inner support frame 102 is fixedly provided with a probe plate 1021, the cross section of the probe plate 1021 is a T-shaped structure, and the probe plate 1021 is matched and clamped with the outer casing 101;

when perforating the perforating bullet body 3, the outer casing 101 is taken out, the inner support frames 102 can play a supporting role, and meanwhile, the stability among the four inner support frames 102 can be enhanced by the probe 1021.

Referring to fig. 4 and 5, a plurality of small through holes 201 and a plurality of large through holes 202 are formed in the steel bullet rack 2, one end of the bullet shell 301 is clamped with the small through holes 201, and the other end of the bullet shell 301 is clamped with the large through holes 202;

the small through hole 201 and the large through hole 202 are respectively clamped at two ends of the bullet shell 301, and at the moment, a plurality of perforating bullets can be fixed.

Referring to fig. 4 and 5, the central axis of the steel bullet rack 2 and the central axes of the plurality of bullet shells 301 have an intersection point, the continuous four small through holes 201 are uniformly and equidistantly distributed on the steel bullet rack 2 in a spiral shape, and the four large through holes 202 are uniformly and equidistantly distributed on the steel bullet rack 2 in a spiral shape;

the whole perforating bullet bodies 3 are controlled to be distributed on the steel bullet frame 2 in a spiral mode, and the perforating bullet bodies 3 are guaranteed to be carried out towards multiple directions when perforating is carried out.

Referring to fig. 4 and 5, the steel bullet rack 2 includes a left half shell rack 203 and a right half shell rack 204, an inner groove 2031 is formed on one side of the left half shell rack 203, and a clamping plate 2041 which is matched and clamped with the inner groove 2031 is fixedly arranged on one side of the right half shell rack 204;

by utilizing the clamping connection between the clamping plate 2041 and the inner groove 2031, the left half shell frame 203 and the right half shell frame 204 can be conveniently spliced into a complete steel bullet frame 2, and the installation convenience of the perforating bullet bodies 3 is further improved.

Referring to fig. 6 and 7, an inner snap ring 3011 is fixedly arranged on one side of the inner side of the cartridge case 301, and the same elastic washer 3012 is fixedly connected between the inner snap ring 3011 and one side of the liner 302;

when the main explosive 304 is filled, the main explosive 304 can push the liner 302 and compress the elastic gasket 3012, and at the moment, the space inside the cartridge case 301, which can be filled with the main explosive 304, is enlarged, so that the filling amount of the main explosive 304 is increased, and the final perforation effect is ensured.

Referring to fig. 6 and 7, a powder filling port 3013 is formed at one end of the cartridge case 301 close to the small through hole 201, the primary explosive 303 is filled in the powder filling port 3013, and one end of the detonating lead 4 is fixed in the powder filling port 3013 and is in contact with the primary explosive 303;

utilize detonating wire 4 transmission current, realize detonating fast to initiating explosive 303, realize that the inside main explosive 304 of a plurality of perforating bullet body 3 detonates simultaneously, guaranteed perforating bullet body 3's perforation efficiency, when a plurality of perforating bullet body 3 carry out perforation operation simultaneously, avoid the impact force to the folk prescription to the diffusion, improved perforation in-process stability.

When in use: firstly, the installation of the perforating charge body 3 is completed, specifically: filling the main explosive 304 into the cartridge case 301 through the explosive filling port 3013, wherein the main explosive 304 can push the shaped charge cover 302 and compress the elastic gasket 3012, the space in the cartridge case 301, which can be filled with the main explosive 304, becomes larger, the filling amount of the main explosive 304 is increased, the final perforating effect is ensured, then the small through hole 201 and the large through hole 202 are respectively clamped to the two ends of the cartridge case 301, the left half case frame 203 and the right half case frame 204 are spliced into a complete steel cartridge frame 2 by utilizing the clamping between the clamping plate 2041 and the inner groove 2031, and then one end of the detonating lead 4 is fixed in the explosive filling port 3013 and is contacted with the initiating explosive 303 by utilizing a welding mode;

then pushing the outer sleeve 1 into a channel to be perforated, simultaneously pushing the steel charge frame 2 into the channel to be perforated, then performing perforating operation, transmitting current by using a detonating lead 4, so as to realize rapid detonation of the primary explosive 303, wherein the primary explosive 303 extends to the main explosive 304 filled between the inner wall of the charge shell 301 and the shaped charge cover 302 and detonates the main explosive 304, the detonated main explosive 304 emits perforating jet flow, the probe plate 1021 can enhance the stability among the four inner layer supporting frames 102, when perforating the perforating charge is performed, the outer sleeve 101 is taken out, the perforating jet flow can directly penetrate through a gap between the inner layer supporting frames 102 of the steel strip structure, the smooth ejection of the jet flow is ensured, and the perforating function of the perforating charge is completed;

thus, the whole working process of the perforating charge can be completed.

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 also be able to cover the technical scope of the present invention by the equivalent or modified embodiments and the modified concepts of the present invention.

Claims

1. The utility model provides a high-effect pressure boost perforating bullet, includes outer tube (1), steel bullet frame (2) and a plurality of perforating bullet projectile body (3), its characterized in that: the steel bullet rack (2) is connected to the inside of the outer sleeve (1) in a sliding mode, a plurality of perforating bullet bodies (3) are distributed on the inner side of the steel bullet rack (2) in an evenly distributed mode, and a detonating lead (4) is connected between every two adjacent perforating bullet bodies (3);

the perforating bullet body (3) comprises a bullet shell (301), a shaped charge cover (302), an initiating explosive (303) and a main explosive (304), wherein the bullet shell (301) is clamped on the inner side of a steel bullet frame (2), the shaped charge cover (302) is clamped on the inner side of the bullet shell (301), the initiating explosive (303) is filled at one end of the bullet shell (301), and the main explosive (304) is filled between the inner wall of the bullet shell (301) and the shaped charge cover (302);

the outer sleeve (1) comprises an outer sleeve (101) and an inner support frame (102), the outer sleeve (101) is sleeved on the inner side of the inner support frame (102), the outer sleeve (101) is a thin-shell pipeline made of aluminum alloy, one end of the inner support frame (102) is fixedly provided with a probe plate (1021), the section of the probe plate (1021) is of a T-shaped structure, and the probe plate (1021) is in matched clamping connection with the outer sleeve (101);

an inner snap ring (3011) is fixedly arranged on one side of the inner side of the cartridge case (301), and the same elastic washer (3012) is fixedly connected between the inner snap ring (3011) and one side of the liner (302).

2. The high efficiency pressurized perforator charge of claim 1 wherein: the inner layer supporting frames (102) are of steel strip structures with arc angles of 45 degrees, and the number of the inner layer supporting frames (102) is four and are uniformly distributed in a circular equiangular mode.

3. The high-efficiency pressurized perforating charge of claim 1, further comprising: a plurality of small through holes (201) and a plurality of large through holes (202) are formed in the steel bullet rack (2), one end of the bullet shell (301) is connected with the small through holes (201) in a clamped mode, and the other end of the bullet shell (301) is connected with the large through holes (202) in a clamped mode.

4. The high efficiency pressurized perforator charge of claim 3 wherein: the central axis of steel bullet frame (2) all has the nodical with the central axis of a plurality of shell case (301), four in succession little through-hole (201) are the even equidistance of spiral type and distribute on steel bullet frame (2), four big through-hole (202) are the even equidistance of spiral type and distribute on steel bullet frame (2).

5. The high efficiency pressurized perforator charge of claim 4 wherein: steel bullet frame (2) include left half casing frame (203) and right half casing frame (204), inner groovy (2031) has been seted up to one side of left side half casing frame (203), one side of right half casing frame (204) is fixed to be equipped with cardboard (2041) with inner groovy (2031) cooperation joint.

6. The high efficiency pressurized perforator charge of claim 5 wherein: one end of the cartridge case (301) close to the small through hole (201) is provided with a explosive filling port (3013), the explosive filling port (3013) is filled with the primary explosive (303), and one end of the detonating lead (4) is fixed inside the explosive filling port (3013) and is in contact with the primary explosive (303).