CN210317258U - Chain type gun-body-free perforator - Google Patents
Chain type gun-body-free perforator Download PDFInfo
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- CN210317258U CN210317258U CN201920655440.9U CN201920655440U CN210317258U CN 210317258 U CN210317258 U CN 210317258U CN 201920655440 U CN201920655440 U CN 201920655440U CN 210317258 U CN210317258 U CN 210317258U
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- bullet
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- shell body
- chain type
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Abstract
The utility model relates to an oil gas well oil pipe perforation operation technical field especially relates to a chain does not have body of a gun perforator. The explosive cartridge comprises at least one cartridge support, a perforating bullet is mounted on the cartridge support and comprises a shell body and a shell cover, the shell body is connected with the shell cover to form a cartridge case with a sealed inner cavity, the inner cavity of the cartridge case is filled with explosive, and the explosive is compressed through a shaped charge cover mounted in the inner cavity of the cartridge case. The utility model has the advantages that: cartridge case simple structure, easy dismounting, adopt the cap to carry out end face seal, through the extrusion deformation power between shell body and the cap realize being connected and sealed of shell body and cap, the dependable performance, support the carrier as the perforating bullet through independent bullet, be convenient for set up the quantity and the phase place of perforating bullet in a flexible way according to the demand, each bullet holds in the palm independent setting, difficult card is in the sleeve pipe, and bullet holds in the palm independent setting still makes the perforating bullet hold in the palm can all break into tiny granule after the perforating bullet perforation, need not to take out the bullet support again after the perforation is accomplished, avoid appearing the stuck well accident, and the safety performance is improved.
Description
Technical Field
The utility model relates to an oil gas well oil pipe perforation operation technical field especially relates to a chain does not have body of a gun perforator.
Background
The through-tubing perforation operation refers to that a perforator penetrates through an oil tube and goes down to a perforation well section to perform perforation in a casing, and is commonly used for oil testing, slim hole treatment, underground accident treatment and the like. Perforators fall into two broad categories, one being gun-body perforators and the other being no-body perforators. Compared with a gun-body perforator, under the same design size, the perforating bullet of the gun-body-free perforator has larger design space, better penetration depth and aperture, but no protection of a gun body, the whole perforator is completely contacted with well fluid, and the pressure resistance is low. Therefore, higher demands are made on the sealing properties of the charges of the non-body perforator. At present, the sealing structure of the perforating bullet of the common gun-body-free bullet-carrier type perforator adopts two seals, a backstop structure is arranged between the two seals, the structure is complex, and the distribution and the angle of the perforating bullet are determined by the bullet carrier of the gun-body-free perforator. However, due to irregular shafts, the passing rate of a common gun-body-free bullet rack type perforator in the conveying process is low, the perforator can be conveyed to a target layer position smoothly sometimes after repeated well opening, the bullet rack deforms seriously and is easy to form casing patching on the bullet rack and a perforating bullet shell due to strong impact force after perforation, and residual bullet racks and fragments of perforating bullets are clamped on the casing wall; or a lot of small fragments are accumulated on the upper part under the support of the bullet rack to block the lower oil-gas layer, so that the construction requirement cannot be met.
SUMMERY OF THE UTILITY MODEL
In view of the shortcoming of the prior art above, the utility model aims at providing a no body perforator of chain for solve among the prior art perforator structure complicated, pass through the difficulty in the transportation, the easy deformation card of cartridge rack is in the sleeve pipe, and the security performance is poor.
In order to achieve the above objects and other related objects, the present invention provides a chain type non-gun body perforator, including at least one bullet holder, install the perforating bullet on the bullet holder, the perforating bullet includes shell body and cap, the shell body is connected with the cap and is formed the sealed shell case of inner chamber, the shell case inner chamber is filled with the explosive to compress tightly the explosive through the type charge cover of installing at the shell case inner chamber.
The beneficial effects of the model are: cartridge case simple structure, easy dismounting, adopt the cap to carry out end face seal, through the extrusion deformation power between shell body and the cap realize being connected and sealed of shell body and cap, the dependable performance, support the carrier as the perforating bullet through independent bullet, be convenient for set up the quantity and the phase place of perforating bullet in a flexible way according to the demand, each bullet holds in the palm independent setting, difficult card is in the sleeve pipe, and bullet holds in the palm independent setting still makes the perforating bullet hold in the palm can all break into tiny granule after the perforating bullet perforation, need not to take out the bullet support again after the perforation is accomplished, avoid appearing the stuck well accident, and the safety performance is improved.
Optionally, the cartridge receiver includes a receiver body having a shape matching the shell body, the shell body is annularly provided with a groove, the shell body is installed in the receiver body, and the shell body is limited from being separated from the receiver body by a stopper installed in the groove.
Optionally, one side of the support body is provided with a second connecting portion for connecting with the first connecting portion of the adjacent pop support, and the other side of the support body is provided with a first connecting portion for connecting with the second connecting portion of the adjacent pop support.
Optionally, the first connecting portion is a cylinder, and a first through hole penetrates through the cylinder along a radial direction of the cylinder.
Optionally, the end of the second connecting portion is concavely provided with a first mounting groove matched with the first connecting portion in shape and a second through hole penetrating through the first mounting groove, and the first connecting portion of the adjacent elastic support extends into the first mounting groove and is connected with the two adjacent elastic supports through a split pin.
The beneficial effect of adopting the above optional scheme is: the bullet holds in the palm simple structure, connects dismouting easy operation convenience, and the later stage of being convenient for is drilled the contained angle between the change adjacent bullet holds in the palm at any time to satisfy the installation requirement of perforating bullet different phase angles, strong adaptability.
Optionally, the stop piece is a clamping ring, a notch is formed in the clamping ring, a certain deformation space is formed, and the mounting groove is convenient to mount.
Optionally, the lower end of the shell body extends into the shell cover and is clamped with the shell cover, and a sealing ring is arranged on the end face, attached to the shell cover, of the shell body, so that the structure is simple, and the sealing performance is good.
Optionally, a detonating cord is included that is connected to each of the shells to detonate the respective charges.
Optionally, a second mounting groove for mounting the detonating cord is formed in the top end of the housing body, and the detonating cord is pressed by the pressing member to be limited from being separated from the second mounting groove.
The beneficial effect of adopting the above optional scheme is: the detonating cord is arranged outside the cartridge case, so that the installation is simple and convenient, the detonating cord is not easy to loosen and fall off, and the stability during detonation is ensured.
Optionally, the bullet holds in the palm is made by the zinc alloy, is favorable to the bullet to hold in the palm the complete blasting to become the piece, avoids the card in the well, has reduced the risk.
Drawings
Fig. 1 is a schematic diagram of a chained, body-less perforator in accordance with an embodiment of the present invention;
FIG. 2 shows a cross-sectional view of a perforating charge of a chained, body-less perforating gun according to an embodiment of the present invention;
fig. 3 is a schematic illustration of the assembly of the sabot and the sabot of a chained perforating gun embodiment of the present invention;
fig. 4 is a schematic diagram of a sabot of a chained body-less perforating gun in accordance with an embodiment of the present invention;
fig. 5 is a schematic diagram of a snap ring of a chained, body-less perforating gun according to an embodiment of the present invention.
Description of reference numerals
1, perforating charge;
11 a shell body;
12 a shell cover;
13 an explosive;
14 a liner;
15, sealing rings;
16 a second mounting groove;
17 a snap ring;
2, supporting by a bullet;
21, supporting the body;
22 a first connection portion;
23 a first through hole;
24 a second connection portion;
25 a second via hole;
26 a first mounting groove;
3 a cotter pin;
4, detonating cord;
5 a pressing member.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
It should be noted that the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are considered to be the scope of the present invention without substantial changes in the technical content.
Before the embodiments of the present invention are described in detail, the application environment of the present invention is described first. The utility model discloses a technique mainly is applied to oil gas well operation field, especially is applied to the oil pipe perforation operation field. The utility model discloses a solve in the oil pipe perforation operation, the bullet frame formula that commonly uses does not have body of a gun perforator structure complicacy, the technical problem of card well easily appears after the perforation.
As shown in fig. 1 to 4, the chain type body-less perforator of the embodiment of the present invention includes at least one bullet holder 2, the bullet holder 2 is installed with a perforating bullet 1, and the number of the bullet holders 2 is set according to the requirement. The perforating bullet 1 includes shell body 11 and cap 12, and shell body 11 is connected with cap 12 and forms the sealed shell case of inner chamber, and the shell case inner chamber is filled with explosive 13 to compress tightly the explosive through the type of charge cover 14 of installing at the shell case inner chamber, type of charge cover 14 can be the toper cover, and the outer wall and the explosive laminating of this toper cover compress tightly the explosive. The upper end top of shell 11 is equipped with second mounting groove 16, and the opening of shell 11 is down, and the lower extreme of shell 11 (opening end promptly) stretches into in cap 12 to with cap 12 chucking, and the terminal surface of shell 11 and cap 12 laminating is equipped with sealing washer 15, and the lower extreme tip of shell 11 can be sunken establishes a recess that is used for installing sealing washer 15, simple structure, simple to operate, and sealing performance is good. Be connected through end face seal's form through cap and shell and make the shell case inner chamber sealed to provide the pretightning force for shell, cap, sealing washer through the extrusion deformation power between shell and the cap, make firm connection and keep good sealing performance between shell and the cap, connect sealed more reliable, the operation is simple and convenient more.
As shown in fig. 1 to 5, the bullet holder 2 includes a holder body 21 having a shape matching with the shell body 11, in the present invention, the shell body 11 has a barrel-shaped structure, and the holder body 21 has a circular ring-shaped structure. The shell body 11 penetrates through the support body 21 and is installed on the support body 21, wherein a groove is annularly arranged on the shell body 11, a stop piece is installed in the groove, and the shell body 11 is limited to be separated from the support body 21 through the stop piece. The stop member can be a clamping ring, a notch 171 is formed in the clamping ring 17, the clamping ring is simple in structure, the notch 171 is arranged, the inner diameter of the clamping ring is smaller than the outer diameter of the groove, the clamping ring can be rapidly and accurately arranged in the groove, the clamping ring is not prone to loosening, and the stability of the structure is improved. Ask one side of body 21 to be equipped with and be used for the second connecting portion 24 of being connected with the first connecting portion of adjacent bullet support, ask the opposite side of body 21 to be equipped with and be used for the first connecting portion 22 of being connected with the second connecting portion of adjacent bullet support the utility model discloses in, first connecting portion 22 and second connecting plate 24 set up along the same footpath orientation of holding in the palm the body back to back. The first connecting portion 22 may be a cylinder, and a first through hole 23 is formed in the cylinder along a radial direction of the cylinder; the tip of second connecting portion 24 is concave be equipped with first connecting portion 22 shape fit's first mounting groove 26 and pass the second through-hole 25 of first mounting groove 26, first through-hole and second through-hole processing are simple and convenient, can set up in a flexible way so that adapt to different phase positions installation, adopt this structural design to make adjacent bullet hold in the palm can arbitrary angle rotation when connecting the assembly, then bore first through-hole and second through-hole at the assigned position and just can realize the assembly of different phases, thereby realize the perforating bullet with different phase position distribution, with different angle perforation, accommodation is wide, be convenient for later stage rework at any time simultaneously and increase the through-hole in order to adapt to the installation demand. During the assembly, the first connecting portion of adjacent bullet support stretches into in the first mounting groove to pass first through-hole and second through-hole through split pin 3 and make two adjacent bullet supports connect, the dismouting is nimble, is convenient for set up bullet support quantity and phase place according to demand and different perforation positions. The bullet holds in the palm and can be made by the zinc alloy and form, and the bullet holds in the palm and adopts the zinc alloy to make and the structure that the cooperation bullet held in the palm makes the bullet hold in the palm and can make full use of the detonation wave that the perforating bullet produced in the perforation process and break into the piece, stops to appear the card well after the perforation, and the bullet holds in the palm and just need not to take out again after breaking into the piece moreover, and fundamentally has avoided traditional bullet frame to block the problem of well when taking out because of warping, has improved the security performance, has reduced the accident.
As shown in fig. 1 to 3, the perforator further comprises a detonating cord 4, wherein the detonating cord 1 is connected with each housing body 11 to detonate each perforating bullet, the top end of the housing body 11 is provided with a second mounting groove 16 for mounting the detonating cord 4, and the detonating cord 1 is limited from being separated from the second mounting groove 16 by pressing the detonating cord 1 by the pressing member 5, so that the detonating cord 1 detonates each perforating bullet smoothly.
The chain type gun body-free perforator of the utility model uses the bullet support as the carrier of the perforating bullet, simplifies the structure, and is beneficial to the smooth passing of the perforator under the well in the perforating operation of the oil pipe; the bullet holder has simple structure and higher assembly efficiency, and the assembly quantity can be flexibly set according to specific requirements; the perforating bullet and the bullet holder are simple in structure and strong in impact force, so that the bullet holder can be smoothly fried into fragments after the perforating bullet is perforated, and the risk of well blockage is avoided.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (9)
1. A chain type gun-body-free perforator is characterized in that: the perforating bullet comprises at least one bullet support, a perforating bullet is installed on the bullet support, the perforating bullet comprises a shell body and a shell cover, the shell body is connected with the shell cover to form a bullet shell with a sealed inner cavity, the inner cavity of the bullet shell is filled with explosives, the explosives are compressed by a liner installed in the inner cavity of the bullet shell, the bullet support comprises a support body matched with the shell body in shape, a groove is arranged on the shell body in a ring mode, the shell body is installed in the support body, and the shell body is limited to be separated from the support body through a stop part installed in the groove.
2. The chain type muzzleless gun perforator of claim 1, wherein: one side of the support body is provided with a second connecting part used for being connected with the first connecting part of the adjacent elastic support, and the other side of the support body is provided with a first connecting part used for being connected with the second connecting part of the adjacent elastic support.
3. The chain type muzzleless gun perforator of claim 2, wherein: the first connecting portion is a cylinder, and a first through hole penetrates through the cylinder along the radial direction of the cylinder.
4. The chain type muzzleless gun perforator of claim 3, wherein: the tip of second connecting portion is concave be equipped with first connecting portion shape complex first mounting groove and pass the second through-hole of first mounting groove, the first connecting portion of adjacent bullet support stretch into first mounting groove in to make adjacent two bullet support connect through the split pin.
5. The chain type muzzleless gun perforator of claim 1, wherein: the stop piece is a clamping ring, and a notch is formed in the clamping ring.
6. The chain type muzzleless gun perforator of claim 1, wherein: the lower end of the shell body extends into the shell cover and is clamped with the shell cover, and a sealing ring is arranged on the end face, attached to the shell cover, of the shell body.
7. The chain type muzzleless gun perforator of claim 1, wherein: the explosive-proof shell further comprises an explosive fuse, and the explosive fuse is connected with each shell body to detonate each perforating charge.
8. The chain type muzzleless gun perforator of claim 7, wherein: the top end of the shell body is provided with a second mounting groove for mounting the detonating cord, and the detonating cord is pressed by the pressing piece to limit the detonating cord to be separated from the second mounting groove.
9. The chain type muzzleless gun perforator of claim 1, wherein: the bullet holder is made of zinc alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920655440.9U CN210317258U (en) | 2019-05-09 | 2019-05-09 | Chain type gun-body-free perforator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920655440.9U CN210317258U (en) | 2019-05-09 | 2019-05-09 | Chain type gun-body-free perforator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210317258U true CN210317258U (en) | 2020-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920655440.9U Active CN210317258U (en) | 2019-05-09 | 2019-05-09 | Chain type gun-body-free perforator |
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| Country | Link |
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| CN (1) | CN210317258U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005381A (en) * | 2019-05-09 | 2019-07-12 | 四川石油射孔器材有限责任公司 | Chain type body-free perforator |
| CN115370332A (en) * | 2022-10-26 | 2022-11-22 | 吉林市双林射孔器材有限责任公司 | High-effect pressurizing perforating bullet |
-
2019
- 2019-05-09 CN CN201920655440.9U patent/CN210317258U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005381A (en) * | 2019-05-09 | 2019-07-12 | 四川石油射孔器材有限责任公司 | Chain type body-free perforator |
| CN115370332A (en) * | 2022-10-26 | 2022-11-22 | 吉林市双林射孔器材有限责任公司 | High-effect pressurizing perforating bullet |
| CN115370332B (en) * | 2022-10-26 | 2023-01-31 | 吉林市双林射孔器材有限责任公司 | High-effect pressurizing perforating bullet |
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