CN101148982A - Side direction detonation symmetrical bidirectional perforator - Google Patents
Side direction detonation symmetrical bidirectional perforator Download PDFInfo
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- CN101148982A CN101148982A CNA2006101529639A CN200610152963A CN101148982A CN 101148982 A CN101148982 A CN 101148982A CN A2006101529639 A CNA2006101529639 A CN A2006101529639A CN 200610152963 A CN200610152963 A CN 200610152963A CN 101148982 A CN101148982 A CN 101148982A
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- perforator
- charge
- side direction
- detonation
- cavity
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Abstract
The laterally initiating symmetrical two-way perforator features the laterally initiating resulting in reduced perforator length; the perforating bullet with two charges, two covers and two holes and thus doubled shot density; and the explosion propagating charge in the center part and between two charges to result in two way driving after initiating. The design of the present invention has reduced rarefaction wave strength and raised energy utilizing rate, and the perforator has greatly raised shot density, improved penetrability and wide application foreground.
Description
One, technical field
The present invention relates to a kind of completion system that oil well uses, specifically a kind of side direction detonation symmetrical expression bidirectional perforator.
Two, background technology
In oil exploration with when recovering the oil, at first will drilling well in the oil-containing zone, setting of casing then, and sleeve pipe and oil reservoir be consolidated, perforator is put into arrived the oil reservoir position perforating gun under at last.After the degree of depth is than standard, just can carry out perforating job (as Fig. 1).Behind the perforation, the oil in the oil reservoir just can enter pit shaft and collected ground in the duct of penetrating along perforating bullet.Here the oil yield of oil well and perforating job relation are very big.Usually multiple aperture is big more more for eyelet, and the oil and gas production of oil well is high more.Yet because the restriction in space in the perforating gun, it is very high that the eyelet quantity on the unit length can not be done.
Three, summary of the invention
The purpose of this invention is to provide a kind of oil well with side direction detonation symmetrical expression bidirectional perforator, compare with conventional gun, it has following characteristics: 1. adopt the side direction detonation technology, deducted detonating fuse, the shared axial space in propagation of explosion hole.Reverse symmetry is installed two assembling medicine and cavity liners on a launch hole device, and the eyelet quantity on the unit length is doubled.2. the booster charge both sides of core all are powder charge and cavity liner, have the two-way push function, and this design has prolonged rarefaction wave time of advent, has weakened rarefaction wave intensity, has improved the capacity usage ratio of explosive.
The object of the present invention is achieved like this: a kind of side direction detonation symmetrical expression bidirectional perforator, its architectural feature are that perforator is a cylinder, and two groups of cavity liners of the placement of its two ends symmetry and powder charge form two perforation unit.The mid portion of perforator communicates, and is a cylindrical hole, and this cylindrical hole is coaxial with perforator, and the upper and lower end face is parallel with the perforator two ends, and with perforator length center line symmetry.In this cylindrical hole explosive is housed, plays propagation of explosion effect (also can be described as booster charge).
Bore blast hole together in perforator one side centre, this center line that plays blast hole should be harmonious with perforator half high plane, communicates along the cylindrical hole of radial direction with the perforator centre, and this rises explosive (this powder charge is called detonating charge) is housed in the blast hole.
Owing to adopted above structure, the operating principle of side direction detonation symmetrical expression bidirectional perforator of the present invention is: after perforator side fire point detonated, detonation was inwardly propagated along playing blast hole, and moment is grown into steady detonation.After arriving the centered cylinder surface, booster charge is passed in detonation.Booster charge igniting back detonation wave turn 90 degrees, and both direction is propagated up and down simultaneously, lights the perforation powder charge of both sides.Perforation powder charge detonation, the cavity liner that crushes forms metal jet, simultaneously perforation on both direction.This design has realized a bullet two holes, and preforation tunnel density is doubled.
Four, description of drawings
Below in conjunction with accompanying drawing the present invention is further detailed.
Fig. 1 is an oil well perforation operation schematic diagram.
Fig. 2 is a common petroleum perforator structure chart.
Fig. 3 is a side direction detonation symmetrical expression bidirectional perforator structure chart of the present invention.
Fig. 4 is side direction detonation symmetrical expression bidirectional perforator central cross sectional view 3002` of the present invention
Five, the specific embodiment
Fig. 1 is an oil well perforation operation schematic diagram.In oil exploration and when exploitation, want drilling well on the oil-containing plot earlier usually, again with sleeve pipe 1 time in well, then sleeve pipe 1 and oil reservoir 5 are consolidated the perforating gun 2 times that perforator 3 will be housed at last correct position in the oil well.After degree of depth calibration, just can carry out perforating job.
Fig. 3 is embodiments of the invention: a kind of side direction detonation symmetrical expression bidirectional perforator, its design feature are that perforator 3 is column type, at the two ends up and down of shell case 301, have symmetrical cavity, and the cavity inner surface is an axial symmetry broken line surface of revolution.Symmetry is placed two assembling medicine 303 and cavity liners 302 in the cavity, forms two perforation unit.The core of shell case 301 communicates, it is a cylindrical hole, this cylindrical hole and shell case 301 are coaxial, both ends of the surface are parallel with shell case 301 both ends of the surface up and down, and with perforator 3 axially and the radial center symmetry, the diameter of this cylinder is at the 6-20 millimeter, it highly is the 8-16 millimeter, in this cylinder explosive is housed, plays the propagation of explosion effect, therefore be also referred to as booster charge 305.
Bore a circular blast hole that rises in half high position, perforator 3 sides, these detonate axially bored line and perforator 3 axis normal, and in the coincidence of perforator 3 half elevation plane, inwardly communicate with the cylindrical hole in perforator 3 centres along radial direction, this bore dia that detonates is the 4-8 millimeter.This rises explosive is housed in the blast hole, is commonly referred to detonating charge 304.
Owing to adopted above structure, side direction detonation symmetrical expression bidirectional perforator of the present invention can be propagated to both direction simultaneously in booster explosive by side direction detonation, detonation and realize: during perforating job, detonating fuse 4 is lighted detonating charge 304 earlier, and detonation wave is inwardly propagated along detonating charge 304 after the igniting.After arriving the border booster charge 305 is lighted.After booster charge 305 igniting, detonation wave turn 90 degrees, and divides both direction to become 180 degree to propagate to both sides, makes both sides powder charge 303 enter the detonation state.After powder charge 303 is detonated, cavity liner 302 crushes, form two metal jets, move to both direction respectively, in perforating gun, sleeve pipe and oil reservoir, got the opposite hole of both direction, thereby realized a bullet two holes, improved the shot density on the unit length greatly, the operating principle of Here it is side direction detonation symmetrical expression bidirectional perforator.
Claims (4)
1. side direction detonation symmetrical expression bidirectional perforator, it comprises shell case (301), cavity liner (302), powder charge (303), booster charge (305) and detonating charge (304).It is characterized in that perforator (3) is a cylinder, detonating charge (304) is positioned at perforator (3) middle part one side, at two end faces of perforator (3) two assembling medicine (303) and cavity liners (302) is installed, and booster charge (305) is arranged between two powder charges (302).
2. side direction detonation symmetrical expression bidirectional perforator according to claim 1, it is characterized in that detonating charge (304) is positioned at middle part one side of perforator (3), for the column type diameter is the 4-8 millimeter, the axis normal of its axis and perforator (3), and in the coincidence of perforator (3) half elevation plane, booster charge (305) inside along radial direction and the centre joins.
3. side direction detonation symmetrical expression bidirectional perforator according to claim 1 is characterized in that having two cavitys in two end face symmetries of perforation shell case (301), and the cavity inner surface is an axial symmetry broken line surface of revolution.Symmetry is placed two assembling medicine (303) and cavity liners (302) in the cavity.Two assembling medicines (303) and cavity liner (302) are all coaxial with perforation shell case (301).
4. side direction detonation symmetrical expression bidirectional perforator according to claim 1 is characterized in that being equipped with at the middle part of perforator (3) a column type booster charge (305).Booster charge (305) is coaxial with perforator (3), and upper and lower surface is parallel with perforator (3) upper and lower end face, and joins with both sides powder charge (303), and the diameter of booster charge (305) highly is the 6-16 millimeter between the 6-20 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101529639A CN101148982A (en) | 2006-09-21 | 2006-09-21 | Side direction detonation symmetrical bidirectional perforator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101529639A CN101148982A (en) | 2006-09-21 | 2006-09-21 | Side direction detonation symmetrical bidirectional perforator |
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| Publication Number | Publication Date |
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| CN101148982A true CN101148982A (en) | 2008-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101529639A Pending CN101148982A (en) | 2006-09-21 | 2006-09-21 | Side direction detonation symmetrical bidirectional perforator |
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| CN (1) | CN101148982A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832123A (en) * | 2010-05-21 | 2010-09-15 | 中国科学技术大学 | Continuous multi-directional concentrated energy perforating bullet |
| CN102022099A (en) * | 2009-09-11 | 2011-04-20 | 营口市石光石油机械有限责任公司 | Body-free side detonation bidirectional perforator used for oil well |
| CN102410005A (en) * | 2011-12-05 | 2012-04-11 | 西安物华巨能爆破器材有限责任公司 | Bidirectional energization explosion-propagating device |
| CN104769213A (en) * | 2012-11-05 | 2015-07-08 | 欧文石油工具有限合伙公司 | Bi-directional shaped charges for perforating a wellbore |
-
2006
- 2006-09-21 CN CNA2006101529639A patent/CN101148982A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022099A (en) * | 2009-09-11 | 2011-04-20 | 营口市石光石油机械有限责任公司 | Body-free side detonation bidirectional perforator used for oil well |
| CN101832123A (en) * | 2010-05-21 | 2010-09-15 | 中国科学技术大学 | Continuous multi-directional concentrated energy perforating bullet |
| CN102410005A (en) * | 2011-12-05 | 2012-04-11 | 西安物华巨能爆破器材有限责任公司 | Bidirectional energization explosion-propagating device |
| CN102410005B (en) * | 2011-12-05 | 2014-04-02 | 西安物华巨能爆破器材有限责任公司 | Bidirectional energization explosion-propagating device |
| CN104769213A (en) * | 2012-11-05 | 2015-07-08 | 欧文石油工具有限合伙公司 | Bi-directional shaped charges for perforating a wellbore |
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Open date: 20080326 |