CN207847604U - A kind of big hole perforator - Google Patents
A kind of big hole perforator Download PDFInfo
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- CN207847604U CN207847604U CN201721485602.6U CN201721485602U CN207847604U CN 207847604 U CN207847604 U CN 207847604U CN 201721485602 U CN201721485602 U CN 201721485602U CN 207847604 U CN207847604 U CN 207847604U
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- China
- Prior art keywords
- epimere
- hypomere
- big hole
- cavity liner
- liner
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Abstract
The utility model discloses a kind of big hole perforators, belong to petroleum perforation field；It is mainly used for after oil well perforation the small technical barrier for causing slow, the non-easy sand plug of consolidated formation of Extraction rate of channel diameter in the earth formation.The utility model includes cavity liner and shell, and the cavity liner epimere is spherical structure, and hypomere is pyramidal structure, and epimere and hypomere are coaxial；Housing cavity lower part is column construction, and middle part is pyramidal structure, and top is spherical structure.The utility model forms jet stream after perforating bullet detonation and forms smaller perforations on perforating gun, prevents fragmentation from entering in perforation tunnel or falling into oil well, while forming the characteristics of big diameter and deep penetrates duct in the earth formation.Its popularization and application advantageously reduce the security risk of construction card rifle, avoid that underground is caused to pollute, while can coordinate well-case perforating sand screen sand control treatment in thick oil reservoir development process, greatly improve christmas efficiency, increase oil and gas production.
Description
Technical field
The utility model belongs to petroleum perforation field, relates generally to design, the manufacturing field of big hole perforator.
Background technology
Currently, during heavy oil wells or unconventional shale gas exploitation perforating job, in used conventional perforation bullet
The wall thickness such as Types of Medicine cover structure use, three wimble structures, the ball for becoming wall thickness structure and the use of traditional big hole perforator Traditional-Chinese-medicine-type cover
It lacks shape structure and circular cone adds curved face type structure, the perforation tunnel diameter in casing and stratum is less than normal, cannot meet casing aperture
Greatly, the small demand in perforating gun aperture, easily causing sand plug causes oil and gas production relatively low；Make especially for unconventional shale gas perforation
It needs to carry out hydraulic fracturing after industry, in pressure break since the perforation tunnel diameter of conventional perforation ejection hole formation is smaller, be pressed when being pumped into
Frictional resistance when splitting liquid near duct is larger, causes formation fracture pressure larger, and pumpage can not get on, can not be by ground when serious
Layer effectively presses off.
Invention content
The utility model solve the technical issues of be：In order to solve existing perforating bullet, to generate aperture in duct in the earth formation small
Shortcoming, the utility model provides a kind of perforating bullet that can be generated in casing and stratum with large aperture.
Big hole perforator can generate larger aperture, and duct is deeper, be conducive to the sand control of loose stuff, improve and penetrate
Hole later stage fracturing effect, greatly improves the rate of oil and gas recovery, becomes one of major measure of frscturing.
The technical solution of the utility model is：A kind of big hole perforator, including cavity liner and shell；On the cavity liner
Section is spherical structure, and hypomere is pyramidal structure, and epimere and hypomere are coaxial；Housing cavity lower part is column construction, and middle part is cone
Shape structure, top are spherical structure.The cavity liner is metal liner, is alloy sheets punch forming.
The further technical solution of the utility model is：The internal diameter SR1 of the cavity liner epimere spherical structure 13mm~
Between 23mm；Hypomere pyramidal structure cone angle 1 is between 50 °~65 °.
The further technical solution of the utility model is：Outside the big hole perforator cavity liner epimere spherical structure
Diameter SR2=SR1+ δ 1；Hypomere pyramidal structure cone angle beta 1=α 1, and wherein SR2 ＞ SR1.
The further technical solution of the utility model is：The Types of Medicine cover inner surface epimere spherical surface height H2 is hypomere circular cone
0.35~0.65 times of height H1.
The further technical solution of the utility model is：One diameter of punching press on the cavity liner epimere spherical structure axis
For the coaxial through-hole of φ 1, through-hole diameter φ 1 is between 9mm~11mm.The main function of trepanning is to improve cavity liner head speed
Degree increases penetration depth.
The further technical solution of the utility model is：The housing cavity top spherical Outer Diameter SR2 15mm~
Between 25.5mm, middle part round platform taper angle theta 1 between 40 °~70 °, lower cylindrical face height H3 should be shell always high H4 0.2~
0.35 times
Invention effect
The utility model has technical effect that：Using Types of Medicine cover structure described in the utility model and matched
Shell structure keeps explosive more reasonable in the distribution of powder charge intracavitary, improves the utilization rate of explosion energy, can reach best quick-fried
Fried energy output effect, therefore, in hydrofracturing of oil wells operation, shale gas exploitation or well-case perforating sand screen sand control treatment mistake
Cheng Zhong, perforator form the eyelet of bigger on casing, have the characteristics that large aperture and deep penetrating.It is manufactured using the utility model
114 type perforating bullets, be packed into 114 type perforating gun (Kong Mi：40 holes/m, 135 °/45 ° of phase), when cloth rifle, is put into 7 " casings between two parties
Interior, penetration API standard concrete target, after testing, average penetration depth reaches 300mm, and mean pore size is on casing
24.5mm, by a large amount of project setting, mold processing, experiment is known the real situation and Contrast on effect, 114 types of the utility model manufacture
Big hole perforator compares 114 type big hole perforators of domestic and international other perforating bullet factories production, is improved on casing aperture
11% or more, column concrete target wears 45% or more deep raising.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model cavity liner.
Fig. 2 is the structural schematic diagram after the utility model cavity liner, shell and high explosive assembly.
Reference sign：1-Types of Medicine cover outer surface epimere；2-Types of Medicine cover inner surface epimeres；3-Types of Medicine cover outer surfaces
Hypomere；4-Types of Medicine cover inner surface hypomeres；5-shells；6-high explosives；7-cavity liners；8-Types of Medicine cover outer surfaces；9-medicines
Type cover inner surface.
Specific implementation mode
Referring to Fig. 1-Fig. 2, the utility model includes mainly：Between cavity liner 7 and shell 5, wherein cavity liner 7 and shell 5
It is equipped with high explosive 6.A. the cavity liner 7 is copper alloy cavity liner, and inner surface 9 and outer surface 8 are by epimere spherical surface, hypomere
Circular conical surface connects and composes.Using top half ball-type, the conical Types of Medicine cover structure in lower half portion, it can be achieved that perforating gun aperture
Small, casing aperture is especially big, wears the deep purpose not reduced, and has larger change compared to traditional big hole perforator Types of Medicine cover structure
It is kind.Wherein, 9 epimere 2 of inner surface is coaxial spherical structure, and hypomere 4 is coaxial part pyramid like configuration；8 epimere 1 of outer surface is same
The spherical structure of axis, hypomere 3 are coaxial part pyramid like configuration；This Types of Medicine cover structure can more preferably ensure Types of Medicine in process
It is metal shell to cover shell 5 described in the concentricity b. of each axial cross section, and inner cavity lower part is cylinder, and middle part is round tapered,
Top is spherical surface.
7 inner surface of big hole perforator cavity liner, the 9 epimere spherical surface internal diameter SR1 is between 13mm~23mm；Hypomere
Cone angle 1 is between 50 °~65 °.
7 outer surface of big hole perforator cavity liner, the 8 epimere spherical Outer Diameter SR2=SR1+ δ 1；Hypomere cone angle beta 1=α
1.Wherein SR2 ＞ SR1.
The 7 wall thickness δ 1 of big hole perforator cavity liner is in 0.5mm~1.2mm.
7 inner surface of big hole perforator cavity liner, the 9 epimere spherical surface height H2 should be hypomere circular conical surface height H1's
0.35~0.65 times.
The coaxial through-hole of one diameter phi 1 of punching press on the 7 epimere sphere centre axis of big hole perforator cavity liner,
Through-hole diameter φ 1 is between 9mm~11mm.
The 5 inner cavity top spherical Outer Diameter SR2 of big hole perforator shell is between 15mm~25.5mm, middle part round platform
For taper angle theta 1 between 40 °~70 °, lower cylindrical face height H3 should be 0.2~0.35 times of the total high H4 of shell.
When manufacture, first the installation mold on press machine, cavity liner 7, stamping forming cavity liner 7 are struck out by copper alloy plate
It is pressed process through being sent to perforating bullet after the assay was approved, then will have weighed accurate high explosive 6 and poured into shell 5, used pressure
It plays equipment cavity liner 7 is pressed into shell 5, completes the manufacture of perforating bullet.
Shell 5 is metal shell, and inner cavity lower part is cylinder, and middle part is round tapered, and top is spherical surface.Wherein, inner cavity
Top spherical Outer Diameter SR2 is between 15mm~25.5mm, and for middle part round platform taper angle theta 1 between 40 °~70 °, lower cylindrical face is high
Degree H3 should be 0.2~0.35 times of the total high H4 of shell.Cavity liner 7 is metal liner, and inner surface 9 and outer surface 8 are by epimere
Spherical surface, hypomere circular conical surface connect and compose.Wherein, 9 epimere 2 of inner surface is coaxial spherical structure, and hypomere 4 is coaxial circular conical surface
Structure, and 9 epimere spherical surface height H2 of inner surface should be 0.35~0.65 times of hypomere circular conical surface height H1；8 epimere of outer surface
1 is coaxial spherical structure, and hypomere 3 is coaxial part pyramid like configuration, epimere spherical Outer Diameter SR2=SR1+ δ 1, hypomere cone angle beta 1
=α 1.Wherein, SR2 ＞ SR1, wall thickness δ 1 is in 0.5mm~1.2mm；One diameter of punching press on 7 epimere sphere centre axis of cavity liner
For the coaxial through-hole of φ 1, φ 1 is between 9mm~11mm.
When manufacture, first copper alloy plate is struck out cavity liner 7, stamping forming cavity liner 7 by installation mold on press
It is pressed process through being sent to perforating bullet after the assay was approved, then will have weighed accurate high explosive 6 and poured into shell 5, used pressure
It plays equipment cavity liner 7 is pressed into shell 5, completes the manufacture of perforating bullet.
The 114 type perforating bullets manufactured using the utility model are packed into 114 type perforating gun (Kong Mi：40 holes/m, 135 ° of phase/
45 °), when cloth rifle is put into 7 between two parties, and " in casing, penetration API standard concrete target, after testing, average penetration depth reaches 300mm
More than, mean pore size is 24.5mm or more on casing.
Claims (6)
1. a kind of big hole perforator, including cavity liner (7) and shell (5)；It is characterized in that, cavity liner (7) epimere is
Spherical structure, hypomere is pyramidal structure, and epimere and hypomere are coaxial；Shell (5) inner cavity lower part is column construction, and middle part is taper
Structure, top are spherical structure；The cavity liner (7) is metal liner, is alloy sheets punch forming.
2. a kind of big hole perforator as described in claim 1, which is characterized in that cavity liner (7) the epimere spherical structure
Internal diameter SR1 between 13mm~23mm；Hypomere pyramidal structure cone angle 1 is between 50 °~65 °.
3. a kind of big hole perforator as described in claim 1, which is characterized in that the big hole perforator cavity liner
(7) the outer diameter SR2=SR1+ δ 1 of outer epimere spherical structure, wherein δ 1 are expressed as liner thickness；Hypomere pyramidal structure cone angle beta 1
=α 1, and wherein SR2 ＞ SR1.
4. a kind of big hole perforator as described in claim 1, which is characterized in that the spherical height of cavity liner (7) epimere
H2 is 0.35~0.65 times of hypomere cone height H1.
5. a kind of big hole perforator as described in claim 1, which is characterized in that cavity liner (7) the epimere spherical structure
The coaxial through-hole of one a diameter of φ 1 of punching press on axis, φ 1 is between 9mm~11mm.
6. a kind of big hole perforator as described in claim 1, which is characterized in that shell (5) inner cavity top spherical surface half
Diameter SR2 is between 15mm~25.5mm, and for middle part round platform taper angle theta 1 between 40 °~70 °, lower cylindrical face height H3 should be shell
0.2~0.35 times of total high H4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721485602.6U CN207847604U (en) | 2017-11-09 | 2017-11-09 | A kind of big hole perforator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721485602.6U CN207847604U (en) | 2017-11-09 | 2017-11-09 | A kind of big hole perforator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207847604U true CN207847604U (en) | 2018-09-11 |
Family
ID=63422531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721485602.6U Active CN207847604U (en) | 2017-11-09 | 2017-11-09 | A kind of big hole perforator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207847604U (en) |
-
2017
- 2017-11-09 CN CN201721485602.6U patent/CN207847604U/en active Active
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