CN1020090C - High polymer cemented explosive for common piercing bullet - Google Patents
High polymer cemented explosive for common piercing bullet Download PDFInfo
- Publication number
- CN1020090C CN1020090C CN 89108047 CN89108047A CN1020090C CN 1020090 C CN1020090 C CN 1020090C CN 89108047 CN89108047 CN 89108047 CN 89108047 A CN89108047 A CN 89108047A CN 1020090 C CN1020090 C CN 1020090C
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- CN
- China
- Prior art keywords
- explosive
- present
- common
- acrylate
- cyclotrimethylene trinitramine
- 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 - Lifetime
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Abstract
The present invention discloses a plastic bonded explosive for a common perforating charge for oil extraction, which is composed of hexogen, a copolymer of acrylic ester and acrylonitrile, and graphite. The present invention is characterized in that a high-energy single compound explosive has the advantages of high hexogen content, excellent flowing performance and formability of moulding powder, high pressed density and energy, good heat resisting properties and excellent compatibility. The shelling breaking performance of the common perforating charge filled with explosive is not changed through the temperature of 180 DEG C for two hours, and perforating depth is higher than that of the like explosives at home and abroad. The plastic bonded explosive for a common perforating charge for oil extraction of the present invention has the advantages of low mechanical sensibility, good producing and using security, simple manufacturing technique and low manufacturing cost. The present invention is suitable for the perforation of all kinds of oil and gas wells under the condition of the temperature of 180 DEG C and the time of two hours.
Description
The present invention relates to a kind of plastic bonded explosive that is used for oil gas well common piercing bullet, this explosive is made up of Cyclotrimethylene trinitramine and binding agent etc.
For recover petroleum and Sweet natural gas, must greatly develop oil, gas well perforating technology, its key is the explosive in the perforating bullet, generally is divided into common piercing bullet according to the thermotolerance perforating bullet, high temperature perforating bullet and ultrahigh-temp perforating bullet three classes, the present invention is applicable to common piercing bullet.
The a large amount of perforating bullets that use in oil field are common piercing bullets at present, and it mainly adopts Cyclotrimethylene trinitramine as the main body explosive, in order to improve the energy of perforating bullet, must suitably improve the content and the pressed density of Cyclotrimethylene trinitramine.Though Cyclotrimethylene trinitramine content is up to more than 98.5% in the common piercing bullet explosive of companies such as U.S. De Laisai Atlas, because of charge density is not high, energy is still not high, and intensity is low, and powder column easily breaks.For the intensity that strengthens powder column and reduce mechanical sensitivity, there is the people that Cyclotrimethylene trinitramine content is reduced to below 95%, but energy decreases, as French Patent FP1467939, report in 1967; Cyclotrimethylene trinitramine content 95%, the explosive formulation of polyacrylonitrile content 5%, energy is not high enough, because domestic similar explosive Cyclotrimethylene trinitramine percentage composition is lower than explosive of the present invention, so energy is also undesirable.
The objective of the invention is to design a kind of explosive formulation, the energy height, thermotolerance is better, and intensity is higher, and consistency is good, is suitable for loading common piercing bullet.
Design philosophy of the present invention is: if a kind of explosive formulation with These characteristics is provided, key is to select a kind of binding agent, the thermotolerance of this binding agent self should be better than Cyclotrimethylene trinitramine, be a kind of Lewis base because of Cyclotrimethylene trinitramine again, so should select a kind of Louis's acids binding agent, so that binding agent and Cyclotrimethylene trinitramine surface adhesion power are big, increase powder column intensity, and can reduce the binding agent consumption.
In order to realize above-mentioned design philosophy, the present invention selects the multipolymer of acrylate and vinyl cyanide as binding agent, wherein contains 2～6 carbon atoms in the ester group of acrylate, selects fine heat-resisting performance, and having good insensitiveness, graphite lubricated and demoulding effect is made deterrent.
Explosive formulation of the present invention (quality %) is:
Cyclotrimethylene trinitramine 95～98.5
Acrylate and acrylonitrile copolymer 1.2～3.5
Graphite 0.3～1.5
Explosive manufacture method of the present invention is as follows:
The copolymer emulsion that in container, adds entry, Cyclotrimethylene trinitramine and acrylate and vinyl cyanide, container is placed on the about 10min of heated and stirred in the water-bath, when being warmed up to 60～65 ℃, add emulsion splitter sodium sulfate, the about 5min of restir, the sodium sulfate dissolving also destroys emulsion, and the multipolymer of acrylate and vinyl cyanide is separated out; Add ethyl acetate stir about 5min, the multipolymer of acrylate and vinyl cyanide is condensed, dissolve and be bonded in the Cyclotrimethylene trinitramine surface and the formation particle.Remove ethyl acetate with underpressure distillation, through about 15min, be warmed up to 70～75 ℃, the about 10min of redistillation is so that steam residual solvent.Be cooled to blowing below 40 ℃, filter, wash, drying and screening obtain white particle.In the cydariform mixing tank, white particle and graphite uniform mixing are promptly obtained the grey black modeling powder.
Explosive better formula of the present invention (quality %) is:
Cyclotrimethylene trinitramine 97.5
The multipolymer 2.0 of butyl acrylate and vinyl cyanide
Oildag 0.5
Advantage of the present invention: high explosive Cyclotrimethylene trinitramine content height, modeling powder free-running property and formability are better, pressed density and energy height, resistance toheat is better, and consistency is good, and mechanical sensitivity is lower, production and safe in utilization, result of use is good.
Embodiment:
In the 5000ml wide-necked bottle, add 975g Cyclotrimethylene trinitramine and 2000ml water, add the copolymer emulsion of 20g butyl acrylate and vinyl cyanide again, wide-necked bottle is put into water-bath, stir 10min, and be warmed up to about 60 ℃, add 20g sodium sulfate, stir 5min, the sodium sulfate dissolving also destroys emulsion, and the multipolymer of butyl acrylate and vinyl cyanide is separated out, and adds about 270ml ethyl acetate, be warmed up to 65 ℃, stir 5～10min and promptly form particle.Remove ethyl acetate with underpressure distillation, through about 15min, be warmed up to 70 ℃, the about 10min of redistillation is to steam residual solvent.Be cooled to blowing below 40 ℃, after filtration, washing, dry and screening, obtain white particle.
In the cydariform mixing tank, white particle and oildag uniform mixing are obtained the grey black modeling powder.
Modeling powder test performance data are as follows:
Energy: explosion velocity (1.725g/cm
3) 8392m/s
Power (TNT=100) 151
Brisance (TNT=100) 122
Sensitivity: impact sensitivity (10kg drops hammer, 25cm drop height, blast %) 8
Friction sensitivity (blast %) 24
Heat-resistant quality: 100 ℃, decrement %: first 48h0.01
Second 48h0.02
100 ℃ of 100h do not explode
Intensity: ultimate compression strength (Φ 15 * 18 powder columns, 1.72g/cm
3)
50℃ 15.7MPa
18℃ 19.2MPa
-40℃ 39.1MPa
Thermotolerance: (the perforating bullet powder column, 13g)
190℃ 2h
180℃ 6h
170℃ 18h。
Claims (2)
1, a kind of high polymer cemented explosive for common piercing bullet is made up of Cyclotrimethylene trinitramine and binding agent, it is characterized in that binding agent is the multipolymer of acrylate and vinyl cyanide, and contains deterrent, and its prescription (quality %) is:
Cyclotrimethylene trinitramine 95～98.5
Acrylate and acrylonitrile copolymer 1.2～3.5
Graphite 0.3～1.5
Wherein contain 2～6 carbon atoms in the ester group of acrylate.
2, explosive according to claim 1 is characterized in that better formula (quality %) is:
Cyclotrimethylene trinitramine 97.5
Butyl acrylate and acrylonitrile copolymer 2.0
Oildag 0.5
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89108047 CN1020090C (en) | 1989-10-30 | 1989-10-30 | High polymer cemented explosive for common piercing bullet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89108047 CN1020090C (en) | 1989-10-30 | 1989-10-30 | High polymer cemented explosive for common piercing bullet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1051346A CN1051346A (en) | 1991-05-15 |
| CN1020090C true CN1020090C (en) | 1993-03-17 |
Family
ID=4857430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89108047 Expired - Lifetime CN1020090C (en) | 1989-10-30 | 1989-10-30 | High polymer cemented explosive for common piercing bullet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1020090C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102887804B (en) * | 2012-09-22 | 2015-07-15 | 山西北化关铝化工有限公司 | Second-pass propellant for detonator |
| CN102887806A (en) * | 2012-09-22 | 2013-01-23 | 山西北化关铝化工有限公司 | One-pass charge for plain detonator |
| CN103864544B (en) * | 2012-12-12 | 2016-07-06 | 南京理工大学 | A kind of high free-running property composite explosives for detonator and preparation method thereof |
| CN103193561B (en) * | 2013-03-26 | 2015-04-01 | 中国工程物理研究院化工材料研究所 | Explosive with low mechanical sensitivity and preparation method thereof |
| CN103204752A (en) * | 2013-04-10 | 2013-07-17 | 中国工程物理研究院化工材料研究所 | Polymer bonded explosive for missile of common jet hole |
| CN103351269B (en) * | 2013-06-06 | 2016-08-17 | 西安近代化学研究所 | Heat-resisting composite explosives and preparation method thereof |
| CN105418340B (en) * | 2015-12-30 | 2017-10-03 | 山西北化关铝化工有限公司 | A kind of superhigh temperature petroleum perforation charge explosive and preparation method thereof |
| CN106397073B (en) * | 2016-08-31 | 2018-04-13 | 山西北化关铝化工有限公司 | A kind of chemical defence shrapnel explosive and preparation method thereof |
| CN110655431B (en) * | 2019-10-14 | 2023-11-10 | 山西北化关铝化工有限公司 | Main charge for special perforating bullet under gas condition and preparation method and application thereof |
| CN110982199B (en) * | 2019-11-29 | 2021-10-08 | 西安近代化学研究所 | Low-sensitivity high-density composition |
-
1989
- 1989-10-30 CN CN 89108047 patent/CN1020090C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1051346A (en) | 1991-05-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 19930317 |