CN206205864U - Extended reach well perforation perforating bullet - Google Patents
Extended reach well perforation perforating bullet Download PDFInfo
- Publication number
- CN206205864U CN206205864U CN201621325144.5U CN201621325144U CN206205864U CN 206205864 U CN206205864 U CN 206205864U CN 201621325144 U CN201621325144 U CN 201621325144U CN 206205864 U CN206205864 U CN 206205864U
- Authority
- CN
- China
- Prior art keywords
- cavity liner
- extended reach
- shell case
- perforating bullet
- reach well
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of extended reach well perforation perforating bullet, it is more to solve chip produced by existing perforator, the problems such as be unfavorable for extended reach well construction safety.Shell case and cavity liner are specifically included, explosive is loaded therebetween, the wherein cover body of cavity liner is conical structure, precrack on the shell case inwall or outer wall, the cavity liner is identical using outside cone angle, many wimble structures that interior cone angle is sequentially reduced from top to bottom, and the inside of cavity liner is dome.The most fragmentation sizes produced after the shell case detonation of precrack are both greater than the eye diameter on perforating gun so that most of housing fragments are trapped within perforating gun, so as to reduce perforation debris discharge rate.Meanwhile, rational crackle design avoids explosive energy loss, and it is constant that perforating bullet wears deep property retention.And Types of Medicine cover structure makes perforating bullet form high speed perforation stream, it is ensured that perforator wears deep performance, and less aperture is produced on perforating gun, further limit the outflow of chip.
Description
Technical field
The utility model is related to the perforating bullet that a kind of oil exploration and development fields are used.
Background technology
Extended reach directional well is more and more in offshore oil field development.Drillng operation difficulty is larger.Horizontal displacement and vertical depth
The ratio between degree is larger, category big displacement, big frictional resistance.In construction, the chip of leakage can increase the frictional resistance of gun body motion, and severe one gun body is stuck in
In sleeve pipe, therefore it is required that the chip that gun body is spilt after perforation is more few better.Existing perforating bullet chip cannot meet extended reach well
The requirement of perforating job.
The content of the invention
The purpose of this utility model is to provide a kind of applicable extended reach well perforation perforating bullet, solves existing perforator and is produced
Raw chip is more, the problems such as be unfavorable for extended reach well construction safety, while can further improve perforating charge capability index.
In order to realize foregoing invention purpose, the technical solution adopted in the utility model is：A kind of extended reach well perforation is with penetrating
Hole bullet, including shell case and cavity liner, load therebetween explosive, and the wherein cover body of cavity liner is conical structure, it is characterised in that：
Precrack on the shell case inwall or outer wall, the conical structure of the cavity liner is a kind of many wimble structures, the inside of cavity liner
It is dome.
Crackle on the shell case, can be transversal crack or longitudinal crack.
It is preferred that from the lower port of shell case to prefabricated 2-4 roads transversal crack propagation of explosion hole.
Preferably laterally the width H of crackle is 2-4mm, and angle [alpha] is 35 ° -55 °.
Many wimble structures, its outside cone angle is identical, and interior cone angle is sequentially reduced from top to bottom.
The beneficial effects of the utility model：Cavity liner structure design, with the effect for reducing eyelet on perforating gun, with 45mm
As a example by the perforating bullet of opening, the eye diameter after conventional perforation on rifle is about 13mm, and after extended reach well perforating bullet perforation on rifle
Eye diameter be 11mm, effectively prevent perforating bullet chip and spill perforating gun.Simultaneously using the shell case shape with pre-existing crack
Into chip it is relatively large, further ensure that chip is remained in perforating gun can not leak outside.Conventional 127 type perforations at this stage
About 600 grams of every foot of the chip of device, every foot of the chip of the 127 type extended reach well perforators designed using the utility model
246.9 grams.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model extended reach well perforation perforating bullet.
Fig. 2 is the structural representation of shell case.
Fig. 3 is the structural representation of cavity liner.
Specific embodiment
The utility model is described further below in conjunction with the accompanying drawings：
As shown in Figure 1：A kind of extended reach well perforation perforating bullet, including shell case 1 and cavity liner 3, load therebetween fried
Medicine 2.
As shown in Figure 2：The shell case 1, from the lower port of shell case to propagation of explosion hole 11, preset 2-4 roads split on the housing of shell case
Line, naturally it is also possible to which prefabricated longitudinal crackle, crackle can also be arranged on the outside of housing.The structure influence perforating bullet of crackle
Crack width H in performance, preferably shell case is 2-4mm, and angle [alpha] is 35 ° -55 °.Therefore, in perforating process, shell case is in explosive
Detonative action under, most fragmentation sizes of generation are both greater than the eye diameter on perforating gun so that most of housing fragment quilts
It is trapped in perforating gun, so as to reduce perforation debris discharge rate.Meanwhile, rational crackle design avoids explosive energy loss,
It is constant that perforating bullet wears deep property retention.
As shown in Figure 3：The many wimble structures of use of cavity liner 3, top circular arc R2-R6, cone angle is 42 ° -46 °, second in first
Cone angle is 40 ° -44 ° in β, and cone angle gamma is 35 ° -39 ° in the 3rd, and outside cone angle δ is 42 ° -46 °.By cavity liner top design reality
The change of existing jet shape and effluxvelocity, jet diameter is smaller at perforating gun position, after jet reaches sleeve pipe, second
The superposition increase jet diameter of jet is realized in interior cone angle change, improves jet energy.The supporting different perforations of different perforating guns
Bullet needs to change cavity liner each interior cone angle change location, while also to adjust the size of top arc, could obtain accordingly
The reasonable layout of jet diameter and energy, so as to realize the requirement of the varying aperture on different perforating guns and different sleeve pipes.This Types of Medicine
Perforating bullet that cover structure is engaged with shell case forms high speed perforation stream, it is ensured that perforator wears deep performance, and is produced on perforating gun
The less aperture of life.By experiment, the more conventional bullet type of eye diameter on perforating gun reduces 2mm, further limit chip
Outflow.
Claims (5)
1. a kind of extended reach well perforation perforating bullet, including shell case and cavity liner, load therebetween explosive, wherein cavity liner
Cover body is conical structure, it is characterised in that：Precrack on the shell case inwall or outer wall, the conical structure of the cavity liner is
A kind of many wimble structures, the inside of cavity liner is dome.
2. extended reach well perforation perforating bullet according to claim 1, it is characterised in that：Prefabricated crackle on the shell case
It is transversal crack or longitudinal crack.
3. extended reach well perforation perforating bullet according to claim 2, it is characterised in that：From the lower port of shell case to propagation of explosion
Prefabricated 2-4 roads transversal crack between hole.
4. extended reach well perforation perforating bullet according to claim 3, it is characterised in that：The width H of transversal crack is 2-
4mm, angle [alpha] is 35 ° -55 °.
5. extended reach well perforation perforating bullet according to claim 1, it is characterised in that：Many wimble structures, its outer cone
Angle is identical, and interior cone angle is sequentially reduced from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621325144.5U CN206205864U (en) | 2016-12-05 | 2016-12-05 | Extended reach well perforation perforating bullet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621325144.5U CN206205864U (en) | 2016-12-05 | 2016-12-05 | Extended reach well perforation perforating bullet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206205864U true CN206205864U (en) | 2017-05-31 |
Family
ID=58751484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621325144.5U Active CN206205864U (en) | 2016-12-05 | 2016-12-05 | Extended reach well perforation perforating bullet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206205864U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894533A (en) * | 2020-07-09 | 2020-11-06 | 南京理工大学 | Energy-containing powder shaped charge liner |
-
2016
- 2016-12-05 CN CN201621325144.5U patent/CN206205864U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894533A (en) * | 2020-07-09 | 2020-11-06 | 南京理工大学 | Energy-containing powder shaped charge liner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NO342574B1 (en) | Perforation system with little or no breakage | |
| RU2008149172A (en) | BORE HOLE PUNCH (OPTIONS) AND METHOD OF PUNCHING | |
| CN104266557B (en) | Pre-control roof paragraphs ore deposit simultaneous shaft sin king method | |
| CN102817633A (en) | Device for draining gas by deep hole crack control blasting and precracking method | |
| CN201531259U (en) | Perforating bullet of high perforation density deep penetration perforator for oil and gas well | |
| CN206205864U (en) | Extended reach well perforation perforating bullet | |
| CN111255421A (en) | Compact oil and gas reservoir perforating bullet | |
| CN202628048U (en) | Perforation gun with inner blind hole and outer blind hole | |
| CN202970657U (en) | Split type opening bullet | |
| CN105507838A (en) | Cumulative cutting device for thick-wall metal pipe columns | |
| CN107270791A (en) | A kind of vertical shaft for mine explosion well completion method | |
| CN103452535B (en) | Face perforator is determined in a kind of Oil/gas Well module bullet holder | |
| CN202850957U (en) | Perforating bullet with big fragments and deep penetration | |
| CN202970656U (en) | Dynamic negative pressure perforating device | |
| CN201043457Y (en) | Perforating bullet suitable for portable sand-preventing perforating tool | |
| CN203008808U (en) | Casing centralizer with variable diameter and rotational flow function | |
| CN104929591A (en) | Inner orientation interception fixed-jet-angle multistage pulse enhanced-perforator | |
| CN105041273A (en) | External directional, orientation and perforation-angle-fixed multistage pulse enhanced-perforator | |
| CN103225498B (en) | Multipole composite deep penetration perforation device | |
| US11761311B2 (en) | Perforation cluster layout design and its relative orientation in the subsurface for a hydraulic fracturing treatment | |
| CN108487891A (en) | A kind of double combination cumulative pressure breaks of the paraboloid of revolution increase the device of shale gas recovery ratio | |
| CN207177851U (en) | A kind of big-hole volumetric perforation charge | |
| CN201531255U (en) | High perforation density deep penetration perforator for oil and gas well | |
| CN102359378A (en) | Coal blasting production method increasing lump coat rate | |
| CN203499654U (en) | Fixed-face perforation module bullet support for oil and gas wells |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |