CN2113336U - Form bullet for underground casing of oil field - Google Patents
Form bullet for underground casing of oil field Download PDFInfo
- Publication number
- CN2113336U CN2113336U CN 92201437 CN92201437U CN2113336U CN 2113336 U CN2113336 U CN 2113336U CN 92201437 CN92201437 CN 92201437 CN 92201437 U CN92201437 U CN 92201437U CN 2113336 U CN2113336 U CN 2113336U
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- CN
- China
- Prior art keywords
- bullet
- projectile tail
- explosive
- detonator
- casing
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- 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.)
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Abstract
The utility model relates to a form bullet for the underground casing tube of an oil field, comprising a bullet head, a bullet body and a bullet tail. The utility model is characterized in that the bullet head is integrated with the bullet body, and the casing of the bullet body can be made of the rubber with good flexibility and elasticity. The inner part of the bullet body is provided with the column-shaped plastic explosive and the balance weight powder, the bullet tail can be connected with a drill rod and can also be connected with a cable head, and the form bullet is suitable to the detonation of an impact detonator and an electric detonator. The gas cell effect can be generated when the detonation occurs, the casing tube can not be damaged by the impact wave, and sheet metals and sundries can not be generated and the form effect can be fast and good.
Description
The utility model relates to oilfield downhole casing and repairs.
Be used to repair sleeve shrinking diameter, squeeze down-hole casing shaping bullet flat, crooked, bad break, this bullet is made up of bullet, bomb body, projectile tail.
Along with the prolongation of oil field development time, the sleeve pipe of oil well damages more and more serious, and the number of sleeve pipe fault well is also more and more, so the Casing Failure reparation has become important work in the oil field development.General casing swage adopts tube expander and roller reshaper more, and utilizing times hits the extruding force shaping sleeve pipe of power and rotation, and speed is slow, and the time is long, and running into complicated sleeve pipe deformation can't solve, and causes the down-hole lock of tool drilling sometimes.
The present metallic explosive shaping process of saying as " well workover engineering " teaching material of Oilfield using, utilize the explosive charge shock wave to get through the cover caliber passage that contracts, speed is fast, effect is obvious, but this shaping process is not suitable for the hole enlargement of large deformation macrobending sleeve pipe and curves cut-off, and the fragile sleeve pipe of explosion time generation metal fragment, and shock wave will cause that casing collapse fragmentates, there is the metal junk down-hole, brings difficulty to post-processed.
The purpose of this utility model is the deficiency on the prior art, the oilfield downhole casing shaping bullet that provide a kind of and do not produce metal fragment, do not damage sleeve pipe, shaping effect is good.
Design of the present utility model: realize that above-mentioned purpose adopts nonmetal blast, select for use nonmetals also to wish not produce fragment even could not produce metal fragment, only select for use and have flexibility resilient rubber materials again, so just can change metal and become flexibility with contacting of sleeve pipe raised face by rigidity, increase contact surface, improve shaping effect, do not produce fragment after the blast, can produce instantaneous gas chamber effect, slow down the snap power of shock wave to sleeve pipe, increase action time, the active force that the sleeve pipe raised face is subjected to has enough time to transmit.So can the destructive envelope rostrum do not appear and reach the effect of shaping.Explosive is also selected for use accordingly has flexible plastic explosive, can be crooked with casing buckling, and the distance of explosive and sleeve pipe raised face is dwindled, also can improve shaping effect.
The utility model is made up of bullet 11, bomb body 5-10, projectile tail 1-4.Bomb body is by sealing ring 5, dividing plate 6, detonator 7, sebific duct 8, counterweight powder 9, explosive 10, and projectile tail 1, sealing ring 2, platform 3, gingival cyst of mucous gland in the newborn buckle 4.
Bullet 11 is conical ball bullets that the sebific duct 8 with bomb body is connected as a single entity.
Dividing plate 6: make by duroplasts or hardwood and to have the cylindrical of centre bore.
Detonator 7: with electric cap or impact detonator.
Sebific duct 8: make by having the resilient again rubber of flexibility.
Counterweight powder 9: adopt heavy heavy metal powder tungsten powder to play and increase the weight of the sinking effect as filler.
Explosive 10: adopt that plastic explosive moulds-4, the XN-explosive makes cylindrically, an end has a blind hole, places detonator.
Projectile tail 1: made sealing ring 2, platform 3 and gingival cyst of mucous gland in the newborn with the 45# steel and buckled 4, projectile tail connects bomb body and drilling rod or cable head.
Manufacturing of the present utility model, the cylindrical explosive of flexible elongated is put into sebific duct, fill the counterweight powder on every side, insert detonator in the blind hole of explosive one end, with the dividing plate jam-pack that has centre bore, sealing ring on the pad, detonator lead is drawn from the dividing plate centre bore, projectile tail inserts straight top tight sealing circle in the sebific duct, is stained with sealing ring on the platform of projectile tail.
The gingival cyst of mucous gland in the newborn button of the utility model projectile tail is connected with sebific duct, in oil field deep well, because pressure makes sebific duct flatten blow-by too greatly, makes one of inner lead coiled when rotating because of projectile tail spiral shell button in addition, under high pressure crushes epidermis and causes short circuit, can not ignite, can buckle at gingival cyst of mucous gland in the newborn and set up locking nut, fill out foraminate a plurality of sealing ring in the gingival cyst of mucous gland in the newborn button, screw tight with hollow pressure cap again, for projectile tail is not rotated, the projectile tail middle part is connected with sealing joint with locking nut.
The utility model has following advantage than prior art:
Casing swage bullet explosion time does not have metal fragment and foreign material, can explode by automatic orientation, and shock wave only makes sleeve pipe hole enlargement shaping not produce the crack, and is simple in structure, safety easy to use.
The utility model description of drawings is as follows:
Accompanying drawing 1 is the sectional drawing of oilfield downhole casing shaping bullet:
1-projectile tail, 2,5-sealing ring, 3-platform, 4-gingival cyst of mucous gland in the newborn are buckled, 6-dividing plate, 7-detonator, 8-sebific duct, 9-counterweight powder, 10-explosive, 11-bullet.
Accompanying drawing 2 is a kind of projectile tail sectional drawings of locking the sebific duct fixing cord in the accompanying drawing 1:
12-interface, 13,16-locking mother Luo, 14,17-sealing ring, 15-projectile tail middle part, the hollow pressure cap of 18-.
Embodiment:
1, implement with reference to accompanying drawing 1: projectile tail is that the sharp mouth shape outside is a gingival cyst of mucous gland in the newborn button 4 with 45# steel processing, head, sharp mouth external diameter 40mm, internal diameter 20mm, long 100mm, sharp gonys external diameter 70mm, the wide platform of 10mm is arranged at the projectile tail bottom, is stained with sealing ring 2 on the platform, and the above inboard of platform is a screw thread.The sebific duct 8 usefulness rubber and the mould of bullet 11 and bomb body are made long 2m, internal diameter 60mm, and the sebific duct 8 of external diameter 70mm, sebific duct one end has high 100mm, solid conical bullet 11, through over cure, the demoulding is made.Make elongated cylindrical of 1.5m diameter 15mm with moulding-4 explosives, one end has the blind hole of long 50mm diameter 6mm to pack into to be filled to 4/5 of explosive length with counterweight powder 9 tungsten powders in the sebific duct 8, the electric cap 7 of packing in the explosive blind hole, be pressed into the dividing plate 6 of Φ 5mm centre bore, the lead of detonator is drawn from the dividing plate centre bore, and with fluid sealant shutoff centre bore.Put into sealing ring 5, projectile tail point mouth inserts in the sebific duct.
During use the electric cap lead is drawn projectile tail, receive on the cable, the joint spiral shell of cable drops into the intransitable position of lead stamp extremely in advance, down-hole to projectile tail platform 4, and energising is ignited, and can't hear explosive sound and vibrations on the derrick of blast back.Take out oilfield downhole casing shaping bullet, only produce several cracks on sebific duct, do not have the foreign material fragment to fall into the down-hole, the empirical tests lead stamp is smoothly by the degree of depth that is hampered, and shaping is successful.
2, with reference to the manufacture method of example 1 bomb body, projectile tail is implemented with reference to Fig. 2: with the processing of 45# steel, the projectile tail head is sharp mouth shape, the outside is the gingival cyst of mucous gland in the newborn button, point mouth external diameter 40mm, internal diameter 20mm, long 100mm, the sharp gonys external diameter 70mm of portion, there is screw thread point mouth inboard, be pressed into the sealing ring 17 of three layers of centre bore Φ 3, the hollow pressure cap 18 of long 100mm external diameter 20mm internal diameter 3mm on the spiral shell again, projectile tail middle part 15mm external diameter 90 internal diameter 80mm, the long 200mm of interface 12 external diameter 80mm internal diameter 70mm, protuberance external diameter 95mm is arranged at the 50mm place, put, connect with locking nut 13 again with sealing ring 14.
During use detonator lead is drawn interface and be linked on the cable head, as long as tighten locking nut 13 ignition of can drowning oneself in a well.
Claims (2)
1, a kind of oilfield downhole casing shaping bullet is made up of bullet, bomb body, projectile tail, it is characterized in that bullet 11 and bomb body 5-10 are connected as a single entity, the housing of bomb body is made sebific duct 8 by rubber, in adorn columniform plastic explosive 10 and counterweight powder 9, detonator 7 inserts in the explosive blind hole, be pressed into dividing plate 6, detonator lead is drawn from the dividing plate centre bore, loads onto projectile tail 1-4.
2, casing swage bullet according to claim 1 is characterized in that locking nut 16 is installed on the projectile tail gingival cyst of mucous gland in the newborn button 3, indentation sealing circle 17 and hollow pressure cap 18 in the gingival cyst of mucous gland in the newborn button, and locking nut 13 is tightly connected projectile tail middle part 15 with interface 12 protrusion places.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92201437 CN2113336U (en) | 1992-01-29 | 1992-01-29 | Form bullet for underground casing of oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92201437 CN2113336U (en) | 1992-01-29 | 1992-01-29 | Form bullet for underground casing of oil field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2113336U true CN2113336U (en) | 1992-08-19 |
Family
ID=4948479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92201437 Granted CN2113336U (en) | 1992-01-29 | 1992-01-29 | Form bullet for underground casing of oil field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2113336U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012068592A1 (en) * | 2010-11-16 | 2012-05-24 | Detnet South Africa (Pty) Ltd | Connector assembly |
-
1992
- 1992-01-29 CN CN 92201437 patent/CN2113336U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012068592A1 (en) * | 2010-11-16 | 2012-05-24 | Detnet South Africa (Pty) Ltd | Connector assembly |
| US9004933B2 (en) | 2010-11-16 | 2015-04-14 | Detnet South Africa (Pty) Ltd | Detonator assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |