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Thermotolerant mixed explosive for oil field

A mixed explosive and heat-resistant technology, which is applied in the direction of explosives, non-explosive/non-thermal agent components, aromatic nitration compositions, etc., can solve the problems of poor granulation process and high sensitivity, and achieve the effect of improving granulation process

Inactive Publication Date: 2005-09-21
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of mixed explosive has high sensitivity and is not suitable for deep well perforating charge in oil fields. In addition, the granulation process is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1.1 The present invention is implemented with reference to the following mass percentage composition:

[0026] Hexanitrodiphenylsulfone 97

[0027] Vinylidene fluoride-perfluoropropylene 4:1 copolymer and

[0028] Vinylidene fluoride-chlorotrifluoroethylene 1:3 copolymer

[0029] The ratio is 3:1 2

[0030] The ratio of paraffin and graphite is 1:1 1

[0031] 1.2 Manufacturing method:

[0032] 1) Dissolve 1.5g of vinylidene fluoride-perfluoropropylene 4:1 copolymer and 0.5g of vinylidene fluoride-trifluorochloroethylene 1:3 copolymer in ethyl acetate, and prepare a mixed viscosity of 3% to 5%. binder solution.

[0033] 2) Add about 400ml of water and 97g of PCS into an 800ml jar with a stopper, stir, and when heated to 55°C, start adding the binder solution, and at the same time turn on the vacuum to evacuate. The particle size is controlled by controlling the dropping speed of the binder solution and the degree of vacuum.

[0034] 3) After adding the binder solu...

Embodiment 2

[0054] 2.1 The present invention is implemented with reference to the following mass percentage composition:

[0055] Hexanitrodiphenylsulfone 96

[0056] Vinylidene fluoride-chlorotrifluoroethylene 1:1 copolymer and

[0057] Vinylidene fluoride-chlorotrifluoroethylene 1:3 copolymer

[0058]The ratio is 2:1 2.5

[0059] The ratio of paraffin and graphite is 2:1 1.5

[0060] 2.2 The manufacturing method of the present invention is implemented with reference to Example 1.

[0061] 2.3 The performance test is as follows:

[0062] Detonation velocity 7263 (ρ=1.734g / cm 3 )

[0063] Power 119.5% TNT equivalent

[0064] Explosive heat 4566(J / g)

[0065] Impact sensitivity 0% (test method GJB772A-97 method 601.1)

[0066] Friction sensitivity 0% (test method GJB772A-97 method 602.1)

[0067] Heat resistance: (Φ20mm×20mm grain) 200℃, 48h, non-flammable and non-explosive;

[0068] DSC 10°C / min heating rate, exothermic peak temperature 348°C.

Embodiment 3

[0070] 3.1 The present invention is implemented with reference to the following mass percentage composition:

[0071] Hexanitrodiphenylsulfone 98

[0072] Vinylidene fluoride-tetrafluoroethylene-perfluoropropylene 6.5:2:1.5 copolymer and

[0073] Vinylidene fluoride-chlorotrifluoroethylene 1:1 copolymer

[0074] Its ratio is 2:1 1.5

[0075] The ratio of paraffin and graphite is 1.5:1 0.5

[0076] 3.2 The manufacturing method of the present invention is implemented with reference to Example 1.

[0077] 3.3 The performance test is as follows:

[0078] Detonation velocity 7295 (ρ=1.736g / cm 3 )

[0079] Power 121.2% TNT equivalent

[0080] Explosive heat 4560(J / g)

[0081] Impact sensitivity 24% (test method GJB772A-97 method 601.1)

[0082] Friction sensitivity 12% (test method GJB772A-97 method 602.1)

[0083] Heat resistance: (Φ20mm×20mm grain) 200℃, 48h, non-flammable and non-explosive;

[0084] DSC 10°C / min heating rate, exothermic peak temperature 346°C.

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Abstract

The invention relates to a thermotolerant mixed explosive for oil field, which comprises (by mass ratio) hexanitrodiphenylsulfone 95-98, fluoroelastomer and fluoro-resin 1.5-3.5, mineral wax and mineral wax 0.5-1.5. The invention can be applied to the field of heatproof high explosive such as oil gas deep-well heat-proof gun perforation cartridge charging.

Description

technical field [0001] The invention is a heat-resistant mixed explosive used in oil fields, belonging to mixed explosives. It is mainly used in the field of heat-resistant high-energy explosives such as oil and gas deep well heat-resistant perforating bullet charges. Background technique [0002] In petroleum blasting equipment, four types of high-energy explosives are mainly used at home and abroad, namely RDX, HMX, PYX and hexanitropyridine. (HNS)-based mixed explosives for perforating bombs, among which PYX and HNS mixed explosives can be used in ultra-high temperature environments above 220 °C, but the production costs of the two are relatively high; HMX mixed explosives can be used at 180 °C for a long time Time to use; RDX type mixed explosives as heat-resistant explosives can only be used in high temperature environments below 160 °C. Therefore, how to balance and coordinate the relationship between heat resistance and price of heat-resistant explosives used in dee...

Claims

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Application Information

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IPC IPC(8): C06B23/00C06B25/04C06B45/10
Inventor 赵省向戴致鑫张成伟邓明哲李小平黄亚峰
Owner XIAN MODERN CHEM RES INST
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