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Thermotolerant mixed explosive for oil field

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

Inactive Publication Date: 2007-04-18
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] Hexanitrodiphenyl sulfone 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 wax 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-chlorotrifluoroethylene 1:3 copolymer in ethyl acetate to prepare a mixture of 3% to 5%. Binding agent solution.

[0033] 2) In an 800ml jar with stopper, add about 400ml of water and 97g of PCS, stir, and when heated to 55°C, start adding the binder solution while opening the vacuum to evacuate. Control the particle size by controlling the dropping speed of the binder solution and the degree of vacuum.

[0034] 3) After adding the binder solution, evacuate at about 65°C for 1...

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 wax 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 speed 7263(ρ=1.734g / cm 3 )

[0063] Power 119.5%TNT equivalent

[0064] Burst 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℃ / min heating rate, exothermic peak temperature 348℃.

Embodiment 3

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

[0071] Hexanitrodiphenyl sulfone 98

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

[0073] Vinylidene fluoride-chlorotrifluoroethylene 1:1 copolymer

[0074] The ratio is 2:1 1.5

[0075] The ratio of paraffin wax 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 speed 7295(ρ=1.736g / cm 3 )

[0079] Power 121.2% TNT equivalent

[0080] Burst 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℃ / min heating rate, exothermic peak temperature 346℃.

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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 for oil fields, belonging to mixed explosives. It is mainly used in the field of heat-resistant and high-energy explosives such as the charge of heat-resistant perforating ammunition for oil and gas deep wells. Background technique [0002] Among the petroleum blasting equipment, the four main types of high-energy explosives currently used at home and abroad are RDX, HMX, PYX and hexanitrodipyridine. (HNS) is the main mixed explosive for perforating bombs. Among them, PYX and HNS-type mixed explosives can be used in ultra-high temperature environments above 220 ℃, but the production cost of the two is relatively high; HMX-type mixed explosives can grow at 180 ℃ Time use; as a heat-resistant explosive, RDX-type mixed 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 for heat-resistant explosives...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B25/04C06B45/10C06B23/00E21B43/11
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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