CN2358224Y - Offset pestle type perforating bullet - Google Patents
Offset pestle type perforating bullet Download PDFInfo
- Publication number
- CN2358224Y CN2358224Y CN98227281U CN98227281U CN2358224Y CN 2358224 Y CN2358224 Y CN 2358224Y CN 98227281 U CN98227281 U CN 98227281U CN 98227281 U CN98227281 U CN 98227281U CN 2358224 Y CN2358224 Y CN 2358224Y
- Authority
- CN
- China
- Prior art keywords
- drug
- shaped
- shaped cover
- pestle
- perforating bullet
- 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.)
- Expired - Fee Related
Links
- 239000002360 explosive Substances 0.000 claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims description 20
- 238000005553 drilling Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- XTFIVUDBNACUBN-UHFFFAOYSA-N 1,3,5-trinitro-1,3,5-triazinane Chemical compound [O-][N+](=O)N1CN([N+]([O-])=O)CN([N+]([O-])=O)C1 XTFIVUDBNACUBN-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 3
- 238000005474 detonation Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000013528 metallic particle Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 230000000386 athletic effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
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- Agricultural Chemicals And Associated Chemicals (AREA)
- Catching Or Destruction (AREA)
Abstract
本实用新型公开了一种用于油田钻井的偏杵式射孔弹。它包括弹壳、装药及锥型药形罩,其特征在于药形罩由金属制成,在装药与药形罩的端口处,设置有扇形炸药条和金属条。本实用新型可消除射孔中的堵塞现象,提高射孔深度及出油率,结构简单,作用可靠。
The utility model discloses a biased pestle type perforating bullet used for oil field drilling. It includes a cartridge case, charge and a tapered drug-shaped cover, and is characterized in that the drug-shaped cover is made of metal, and fan-shaped explosive strips and metal strips are arranged at the ports of the charge and the drug-shaped cover. The utility model can eliminate the clogging phenomenon in the perforation, improve the perforation depth and oil yield, and has simple structure and reliable function.
Description
The utility model relates to the beehive-shaped charge perforating bullet that a kind of oil well perforation is used, particularly a kind of inclined to one side pestle formula perforating bullet.
Existing petroleum perforation charge is made up of shell case, powder charge and drug-shaped cover three parts.Shell case generally is formed from steel, and powder charge and drug-shaped cover are linked together to be become one and distribute whole perforating bullet.It is the heat-resistant explosive of main body that the hexogen explosive is generally adopted in powder charge, and to adapt to the higher temperature in down-hole, drug-shaped cover adopts by metal dust (tungsten powder, copper powder, bismuth meal) and mixes the powder cover that compacting forms.After powder charge is detonated by the center, top, under the effect of detonation wave, make the drug-shaped cover rapid closing, can form one high-speed jet and penetrate from the center.Jet can be penetrated the sandstone of metal sleeve, cement sheath and the oil-containing of wearing oil well, and oil can be flowed in the sleeve pipe by perforation, extracts ground out by oil pumper again.Perforation in sandstone crack dark more, that produce is many more, just easy more outflow of oil, and oil yield is just high more.
Purple metal drug-shaped cover made of copper is mostly adopted in the beehive-shaped charge that now is used on the weapon, and is used for all employings powder cover on the perforating bullet, and this is because after the metal drug-shaped cover closure, except that forming jet, also can form the pestle body.The volume of pestle body is big, and speed is low, does not have penetration effect, and it enters in the perforation after can following jet, and perforation is stopped up, and hinders the outflow of oil.Therefore can not use the metal drug-shaped cover on the perforating bullet.The powder drug-shaped cover that perforating bullet uses wherein contains the very low bismuth metal of fusing point, and after the blast, bismuth liquefies rapidly, and the contact when forming the pestle body between the metal dust is very weak, is easy to scatter, and causes pestle to block up phenomenon so can not form the pestle body of bulk.But when adopting the powder cover, its jet also is formed by discrete metallic particles, and penetration effect is worn and reduced by 20～30% deeply approximately not as continuous metal jet.Though the powder cover does not have the stifled phenomenon of pestle of bulk in addition, a large amount of metallic particles of powder cover still can enter in the perforation, the obstruction of the crack in the sandstone may be influenced oil yield.
The inclined to one side pestle formula perforating bullet that the purpose of this utility model is to provide does not have obstruction in a kind of perforation, penetrability is good, can improve oil yield.
The technical solution that realizes the utility model purpose is: a kind of inclined to one side pestle formula perforating bullet, comprise shell case, powder charge and tapered cavity liner, powder charge is arranged between shell case and the drug-shaped cover, it is characterized in that drug-shaped cover is made of metal, in the port of powder charge and drug-shaped cover, be provided with fan-shaped explosive bar and bonding jumper.
Principle of the present utility model is to adopt the metal drug-shaped cover to replace the powder cover that uses now, and dark further acquisition of wearing of perforating bullet improved; Adopt a kind of fan-shaped bonding jumper that is laterally exploded and driven by explosive simultaneously, bump pestle body makes its off-axis, and the pestle body can not entered in the perforation.After the powder charge of perforating bullet is detonated from center of top by detonating fuse, the detonation wave that the produces high pressure metal drug-shaped cover that crushes successively makes its closure, drug-shaped cover inner surface metal is extruded from the center, form the thinner high-speed jet (7000～8000 meter per second) of diameter, it can be penetrated and wear metal sleeve and sandstone, and it is worn deeply and is directly proportional with jet length.Because jet has head speed height, the characteristics that tail speed is low, at the volley, jet also can elongate under the effect of velocity gradient voluntarily, and longer jet can obtain bigger wearing deeply.Promptly form the pestle body after the drug-shaped cover external metallization closure, its quality accounts for 70%.Because the volume of pestle body is big, speed is low (300～400 meter per second), does not have penetration effect, it is followed in the motion of jet back, as not removing, promptly can block perforation, Here it is in the past perforating bullet can not adopt the cause of metal cap.Why the utility model can adopt the metal drug-shaped cover, is provided with the inclined to one side pestle device that explosive drives with regard to being the utility model at the oral area of beehive-shaped charge, the pestle body of generation can not entered in the perforation go.The pestle device is made up of fan-shaped explosive bar and fan-shaped bonding jumper partially, arrive the oral area of beehive-shaped charge when detonation wave after, can continue to ignite fan-shaped explosive bar, the strength of its blast will drive the transverse movement of fan-shaped metal row culture, because the quality and the size of fan-shaped explosive bar and fan-shaped bonding jumper can freely be selected, the lateral movement velocity that can adjust fan-shaped bonding jumper makes its speed of crushing than drug-shaped cover oral area slower, so just can guarantee that drug-shaped cover finishes closing course earlier, fan-shaped bonding jumper moves to axial location again, laterally strikes on the pestle body and can not collide with jet.The pestle body will change athletic posture and direction after being subjected to the horizontal bump of the bigger fan-shaped bonding jumper of quality, off-axis and can not entering in the perforation.
The utility model compared with prior art, its distinguishing feature is: adopt the metal drug-shaped cover, can give full play to jet continuously and the advantage that can elongate, make the dark raising of wearing of perforating bullet more than 20～30%, and " pollution " of perforation is reduced to 1/6～1/7.This raising to oil yield is very favourable, just changes the material of drug-shaped cover on the structure, has increased the inclined to one side pestle device of oral area, and structure is also uncomplicated, and now perforating bullet manufacturer is very easy practices midwifery.
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is an inclined to one side pestle schematic representation of apparatus of the present utility model.
Fig. 3 is the utility model mechanism schematic diagram.
Below in conjunction with accompanying drawing the utility model is further described.
In conjunction with Fig. 1, Fig. 2, Fig. 3, shell case 1 of the present utility model is formed from steel; Powder charge 2 is formed by the heat-resistant explosive compacting, and the explosive main body is hexogen or HMX; Drug-shaped cover 3 adopts purple metal drug-shaped cover made of copper, its cone angle: 45 °～55 °, become wall thickness: oral area (0.9～1.2) mm, top (0.5～0.8) mm, oral area are equipped with the inclined to one side pestle device that explosive drives.Fan-shaped explosive bar 4 is formed by the explosive compacting identical with powder charge 2, and rectangular, its thickness is (2～4) mm approximately, and width is (5～8) mm approximately.Fan-shaped bonding jumper 5 is made by mild steel, and its thickness is (3～5) mm approximately, and width is (5～8) mm approximately, and it is trapezoidal that the cross section is.Fan angle alpha is (60 °～120 °) approximately.Fan-shaped explosive bar 4 can be close to glue with fan-shaped bonding jumper 5 and be fixed in the shell case 1, also can adopt other Aided Machine to fix.Convenient for technology, also can adopt plumbous detonating fuse or make fan-shaped explosive bar 4 with plasticity, flexible explosive, plumbous detonating fuse is plumbous detonating fuse as crust, and is very soft, is convenient to bend to curve shape, extraordinary shape also is convenient to be pressed in its cross section.Used explosive is hexogen or HMX, has better heat-resisting and sensitivity to initiation.After powder charge was detonated by detonating fuse 6, the jet of metal drug-shaped cover was finished the task of wearing pipe and sandstone of penetrating; Fan-shaped bonding jumper 5 also is subjected to the driving of explosive to sweep away bump pestle body as reaping hook, makes its off-axis, can not enter among the perforation.Among Fig. 3,1,2,3,4 four poly-process that has clearly reflected inclined to one side pestle of step.
Claims (3)
1, a kind of inclined to one side pestle formula perforating bullet comprises the tapered drug-shaped cover [3] of shell case [1], powder charge [2] it is characterized in that drug-shaped cover is made of metal, and in the port of powder charge and drug-shaped cover, is provided with one section fan-shaped explosive bar [4] and bonding jumper [5]
2,, it is characterized in that explosive bar [4] made by plumbous detonating fuse according to the described inclined to one side pestle formula perforating bullet of claim 1.
3,, it is characterized in that explosive bar [4] made by plasticity or flexible explosive according to the described inclined to one side pestle formula perforating bullet of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98227281U CN2358224Y (en) | 1998-07-09 | 1998-07-09 | Offset pestle type perforating bullet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98227281U CN2358224Y (en) | 1998-07-09 | 1998-07-09 | Offset pestle type perforating bullet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2358224Y true CN2358224Y (en) | 2000-01-12 |
Family
ID=33977619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98227281U Expired - Fee Related CN2358224Y (en) | 1998-07-09 | 1998-07-09 | Offset pestle type perforating bullet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2358224Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705807B (en) * | 2009-11-16 | 2012-06-27 | 长春工业大学 | Protective cover of petroleum perforation charge |
| CN108138556A (en) * | 2015-08-25 | 2018-06-08 | 欧文石油工具有限合伙公司 | EFP exploding wires |
| CN108952643A (en) * | 2018-06-06 | 2018-12-07 | 宁波精达五金制造有限公司 | A kind of perforation shell case and its manufacturing method |
-
1998
- 1998-07-09 CN CN98227281U patent/CN2358224Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705807B (en) * | 2009-11-16 | 2012-06-27 | 长春工业大学 | Protective cover of petroleum perforation charge |
| CN108138556A (en) * | 2015-08-25 | 2018-06-08 | 欧文石油工具有限合伙公司 | EFP exploding wires |
| CN108952643A (en) * | 2018-06-06 | 2018-12-07 | 宁波精达五金制造有限公司 | A kind of perforation shell case and its manufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |