CN1122406A - Perforator - Google Patents
Perforator Download PDFInfo
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- CN1122406A CN1122406A CN 94117681 CN94117681A CN1122406A CN 1122406 A CN1122406 A CN 1122406A CN 94117681 CN94117681 CN 94117681 CN 94117681 A CN94117681 A CN 94117681A CN 1122406 A CN1122406 A CN 1122406A
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- gun
- stick
- perforator
- perforating
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Abstract
The perforator consists of primer detonator, perforating gun and gun tail and it can complete the penetrance to petroleum pipe and has no problem of bullet explosion in bore. Through explosion, burning, dissolution and proper stress structure, the primer detonator, bullet holder, separator and gun tail are cleaned and penetrated with petroleum pipe. This makes it possible to complete the subsequent measurement, sewage draining, fracturing and acidizing processes.
Description
The present invention relates to penetrate and wear oil well casing and subterranean strata, and connect the perforator of oil pipe, this perforator is made up of initiator, perforating gun and gun breech.
At present in the exploitation of oil and natural gas, that uses both at home and abroad has a body of a gun tubing conveyed perforation (tcp) device, and its main feature is to realize underbalance perforating.But still have serious fried rifle problem: after perforator was ignited, shock wave can not in time unload in the body of a gun, and the formation shock wave superposes and causes fried rifle.The once fried rifle of every generation causes heavy losses all can for underground equipment and field produces; Usually, the oil gas well also need carry out the test of temperature, pressure and flow behind perforation, also need carry out acidifying or pressure break.If will carry out test or implement follow-up well stimulation, just must trip out former perforation tubing string, change the tubing string of band screen casing, particularly for high-pressure oil-gas well, lift pipe string is a danger close, just must kill-job.So not only to increase a large amount of operating expenses and prolong the activity duration, also can pollute oil-gas Layer.
At the beginning of the nineties, domestic some oil field is the several parallel holes of axle center hole symmetry ground auger of walking detonating fuse in each joint upper edge of perforating gun, but has little effect for solving fried rifle problem.1987, United States Patent (USP)-4693317 disclosed a kind of shock wave absorber, comprised axial absorption and radially absorption.1991, BP-2242009 disclosed a kind of down-hole pressure annihilator.This annihilator complex structure, the assembling difficulty, explosion transfer performance is unreliable, and home and overseas is these measures that the fried rifle problem of solution is taked, and effect is all not obvious, does not fundamentally solve fried rifle problem.
Existing perforator, rifle string and oil pipe behind the perforation can not connect, and not playing the replace tubes post just can't the blowdown well-flushing, can't test, acidifying and pressure break.How to solve this difficult problem? do not appear in the newspapers both at home and abroad.
The objective of the invention is in order to overcome disadvantages of background technology, design a kind of interior shock wave of perforating gun that can make and unload, prevent fried rifle; Oil pipe and perforator are connected, finish the perforator of subsequent technique.
Design of the present invention: realize above-mentioned purpose, must make the whole self-destructions of initiator, locating piece, firing mount, dividing plate and gun breech of perforator, rifle string and oil pipe are connected.Initiator utilizes blast, burning and dissolution and prestressed structure when finishing the task of detonating, make initiator form the through hole of diameter greater than 60mm along body of a gun axis.For making locating piece and dividing plate self-destruction, select a kind of phenoplasts for use and filler can be dissolved in the water.The intensity of locating piece is enough to bear firing mount and the weight of perforating bullet and the impact force that causes from construction in the body of a gun.On locating piece and the dividing plate stick is housed, the detonation of quick-fried rope is sought in utilization and the combustion of stick makes locating piece and dividing plate pulverize burning.Firing mount is selected a kind of phenoplasts for use, can bear the weight of perforating bullet, has certain intensity, the self-destruction of burning.Stick is housed in the gun breech, utilizes detonating fuse this powder column that ignites,, gun breech is formed and the large through-hole of the body of a gun with the footpath wedge-type seal lid burning and broken.Stop up in order to prevent that the perforation shell case from piling up, shell case is designed to stress groove structure, become uniform fine granularity fragmentation after the blast.Adopted above-mentioned design, perforator has formed from initiator when finishing the perforation task, down to the large through-hole in the same footpath of gun breech and effective screen casing.
Perforator of the present invention is made up of initiator 1-6, perforating gun 7-14 and gun breech 15-19, is characterized in that initiator base 6 made centre bore garden dish by phenoplasts, and primary explosive column 5 bonds it on; Perforating bullet 12 shells have the stress groove in the perforating gun, and wedge-type seal plug 19 is bonded in housing 17 lower ends in the gun breech, and stick 16 is packed in the housing 17, and dividing plate 15 is bonded in stick 16 upper ends, and igniting primer 18 inserts in the centre bore of dividing plates and stick.
The present invention has following advantage compared to existing technology:
1, shock wave is in time unloaded, prevent fried rifle.
2, after perforator was ignited, the internals self-destruction formed top-down major path, and lift pipe string can not carry out the construction of subsequent technique.
3, shorten construction period, save substantial contribution.
Description of drawings of the present invention is as follows:
Fig. 1 is the sectional drawing of perforator.
Embodiment:
1, the present invention implements with reference to accompanying drawing 1:
Perforator of the present invention is made up of initiator 1-6, perforating gun 7-14 and gun breech 15-19.
Initiator 1-6: constitute by box cupling 1, seal cover 2, firing pin 3, housing 4, priming 5 and base 6.
Box cupling 1: make length 200mm, maximum outside diameter Φ 102mm, internal diameter Φ 60mm with the 35CrMo steel.The upper end is 27/8 " tubing round thread is connected with oil pipe, and the lower end is that common angular thread is connected with housing 4.
Seal cover 2: make with china clay material, external diameter Φ 80mm, internal diameter Φ 70mm hemispherical bonds together with epoxy glue and housing 4, prevents that well liquid from entering initiator.
Firing pin 3: make length 40mm with low-melting alloy, maximum gauge 44mm's is "T"-shaped, pulls the trigger self-destruction behind the priming under external force.
Housing 4: become M85 * 3 external screw threads with the 35CrMo steel, maximum outside diameter Φ 102mm, aperture Φ 60mm, length 150mm.Top and bottom are that external screw thread is used to connect box cupling 1 and box cupling 7.
Priming 5: make Φ 20 * 20mm powder column, blast initiation detonating fuse by lead azide and Tai An.
Base 6: make with phenoplasts, external diameter is M80 * 2 screw threads, and thickness 10mm has centre bore Φ 60mm, and the garden lid of length 150mm is used for fixing priming.
The assembling of initiator: earlier primary explosive column 5 is bonded and fixed on the base 6, the base male thread portion is coated fluid sealant be screwed to housing 4 lower ends.Firing pin 3 is fixed on the housing 4 flushes with the upper surface, seal cover 2 usefulness epoxy glues are bonded in housing 4 upper ends, treat box cupling 1 lower end to be threaded with housing 4 upper ends after fixed, assembling finishes stand-by.
Perforating gun 7-14: form by box cupling 7, locating piece 8, stick 9, detonating primer 10, firing mount 11, perforating bullet 12, the body of a gun 13 and detonating fuse 14, by the size manufacturing of 89 type perforating guns.
Box cupling 7: make with the 35CrMo steel, be used for the connection between the two joint perforating guns.
Locating piece 8: coil in the garden of making centre bore with phenoplasts, is used for fixing stick 9, detonating primer 10 and firing mount 11.
Stick 9: gunpowder and deterrent, cementing agent are pressed into, and are used for demolishing locating piece 8.
Detonating primer 10: select existing No. 8 detonating primers for use, be contained in detonating fuse two ends series connection detonating fuse and use.
Firing mount 11: make with phenoplasts, with the perforating bullet that fixes.
Perforating bullet 12: with special stress groove shell, 89 type lined-cavity charges.As penetrating sleeve pipe and rock stratum, near region.The body of a gun 13: use
" oil pipe or Φ 89mm alloy pipe make, two ends are external screw thread.
Detonating fuse 14: with SBY-1 type oil well detonating fuse, as series connection and ignition perforating bullet.
Gun breech 15-19: form by dividing plate 15, stick 16, housing 17, detonating primer 18 and wedge-type seal plug 19.
Dividing plate 15: phenoplasts are made, Φ 80mm, and thick 4mm, centre bore Φ 8mm garden sheet is used for fixing detonating primer and stick and uses.
Stick 16: gunpowder, deterrent and cementing agent are pressed into external diameter Φ 70mm, high 65mm, the powder column of aperture Φ 8mm.Be used for demolishing wedge-type seal plug and gun breech.
Housing 17: make length 170mm with the 35CrMo steel, maximum outside diameter Φ 102mm, aperture Φ 74mm, upper end internal thread M85 * 3, the 60 ° of flared horn in lower end.
Detonating primer 18:8 detonating primer, stick 16 is used for igniting.
Wedge-type seal plug 19: make thickness 10mm with the high strength phenoplasts, 60 ° of the angles of wedge, maximum outside diameter Φ 82mm seals.
The assembling of gun breech: earlier with 19 gluings of wedge-type seal plug in housing 17 lower ends, treat fixed after with the stick fix tightly in the housing 17 of packing into, dividing plate 15 is bonded in stick 16 upper ends, make on the dividing plate on the centre bore and stick centre bore concentric, then detonating primer 18 is packed in the centre bore of dividing plate 15 and stick 16, assembling finishes stand-by.
Perforator of the present invention is with reference to accompanying drawing 1 assembling: perforating bullet 12 is packed in the hole of firing mount 11 one by one, with a detonating fuse 14 each perforating bullet is connected, a detonating primer 10 is loaded onto at the two ends of detonating fuse 14 respectively, firing mount is packed in the body of a gun 13, locating piece 8 is loaded onto at two ends respectively, and the double-end detonating primer of firing mount is fixed on the locating piece 8.Then perforating gun is connected by joint with box cupling 7.Gun breech is screwed in the lower end of a bottom joint perforating gun, treats that whole rifle seals in well head, at last initiator is screwed in the rifle string topmost, the perforator assembling finishes, and with oil pipe perforator is lowered to the oil-gas Layer position, load onto production tree after, ignite initiator with trip rod.
Perforator of the present invention when oil well applications, is assembled by an initiator, 1-5 joint perforating gun (joint number is decided by the core intersection and the number of plies) and a gun breech.Oil gas well in the area, Sichuan is tested, and fried rifle accident does not take place, and does not play the replace tubes post and has just successfully finished blowdown well-flushing, test, pressure break and acidification technique.
Claims (1)
1, a kind of perforator is made up of initiator (1-6), perforating gun (7-14) and gun breech (15-19), it is characterized in that base in the initiator (6) made centre bore garden dish by phenoplasts, and primary explosive column (5) bonds it on; Perforating bullet in the perforating gun (12) shell has the stress groove; Wedge-type seal plug (19) is bonded in housing (17) lower end in the gun breech, and stick (16) is packed in the housing (17), and dividing plate (15) is bonded in stick (16) upper end, and adapter-booster (18) inserts in the centre bore of dividing plate and stick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94117681A CN1073664C (en) | 1994-11-01 | 1994-11-01 | Perforator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94117681A CN1073664C (en) | 1994-11-01 | 1994-11-01 | Perforator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1122406A true CN1122406A (en) | 1996-05-15 |
| CN1073664C CN1073664C (en) | 2001-10-24 |
Family
ID=5038468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94117681A Expired - Fee Related CN1073664C (en) | 1994-11-01 | 1994-11-01 | Perforator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1073664C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575965B (en) * | 2009-04-02 | 2012-09-19 | 西安近代化学研究所 | Perforating explosion-proof gun device |
| CN107313727A (en) * | 2017-07-11 | 2017-11-03 | 中石化石油工程技术服务有限公司 | One kind floating setting of casing high intensity self-dissolving formula box cupling |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5103912A (en) * | 1990-08-13 | 1992-04-14 | Flint George R | Method and apparatus for completing deviated and horizontal wellbores |
| CN1027914C (en) * | 1991-12-03 | 1995-03-15 | 西安近代化学研究所 | Compound bullet for perforation and fracturing |
| US5355957A (en) * | 1992-08-28 | 1994-10-18 | Halliburton Company | Combined pressure testing and selective fired perforating systems |
| JP3995577B2 (en) * | 2002-10-07 | 2007-10-24 | 松下電器産業株式会社 | Data transmission processing apparatus and program |
-
1994
- 1994-11-01 CN CN94117681A patent/CN1073664C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575965B (en) * | 2009-04-02 | 2012-09-19 | 西安近代化学研究所 | Perforating explosion-proof gun device |
| CN107313727A (en) * | 2017-07-11 | 2017-11-03 | 中石化石油工程技术服务有限公司 | One kind floating setting of casing high intensity self-dissolving formula box cupling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1073664C (en) | 2001-10-24 |
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| C14 | Grant of patent or utility model | ||
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