Polymer bonded explosive for ultra-high temperature petroleum perforating bullet and preparation method thereof

A technology of bonded explosives and perforating bullets, applied in the direction of aromatic nitration composition, etc., can solve the problems of insufficient perforation energy, low bulk density, poor fluidity, etc., and achieve good penetration performance, high bulk density, and bonding performance excellent effect

Active Publication Date: 2016-07-06
SHANXI BEIHUA GUANLYU CHEM IND
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  • Abstract
  • Description
  • Claims
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[0003] The present invention provides a polymer bonded explosive for ultra-high temperature petroleum perforating bullets and its Preparation

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  • Polymer bonded explosive for ultra-high temperature petroleum perforating bullet and preparation method thereof

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[0015] A method for preparing high polymer bonded explosives for ultra-high temperature petroleum perforating bombs, comprising the following steps: (a) putting water in a container, putting hexanitrostilbene into the water, and stirring to form a suspension; The quality of water is 1.2~1.5 times of the quality of hexanitrostilbene (1.2, 1.3, 1.4, 1.5 times can be selected); (b) add binder to the suspension, stir well and then add a sufficient amount of demulsifier, and stir evenly; the binder is vinyl acetate-methyl acrylate-butyl acrylate terpolymer, and the demulsifier is anhydrous CaCl 2 ; (c) Heat the resulting mixed solution to 55°C~60°C (55°C, 56°C, 57°C, 58°C, 59°C, 60°C can be selected), add ethyl acetate, and start granulation. Observe the yellow color by sampling The particle size controls the amount of ethyl acetate added. The more ethyl acetate is added, the larger the particle size of the yellow particles; (d) when the particle size of the yellow particles reache...

Embodiment 1

[0017] Example 1 A method for preparing high polymer bonded explosives for ultra-high temperature petroleum perforating bombs, comprising the following steps: (a) Put water in a container, put hexanitrostilbene into the water, and stir to form a suspension ; The quality of water in the container is 1.2 times the mass of hexanitrostilbene; (b) Add a binder to the suspension, stir evenly, then add a sufficient amount of demulsifier, and stir evenly, the binder is acetic acid Ethylene-methyl acrylate-butyl acrylate terpolymer, demulsifier is anhydrous CaCl 2 ; (c) Warm up the resulting mixed solution to 56°C under stirring, add ethyl acetate, and start granulation; control the amount of ethyl acetate added by sampling and observing the size of the yellow particles, the more ethyl acetate added , the larger the particle size of the yellow particles; (d) When the particle size of the yellow particles reaches 8-50 mesh, stop adding ethyl acetate, open the vacuum system, and at the s...

Embodiment 2

[0018] Example 2 A method for preparing high polymer bonded explosives for ultra-high temperature petroleum perforating bombs, comprising the following steps: (a) Put water in a container, put hexanitrostilbene into the water, and stir to form a suspension ; The quality of the water in the container is 1.5 times the mass of hexanitrostilbene; (b) Add a binder to the suspension, stir evenly, then add a sufficient amount of demulsifier, and stir evenly; the binder is acetic acid Ethylene-methyl acrylate-butyl acrylate terpolymer, demulsifier is anhydrous CaCl 2(c) Warm up the resulting mixed solution to 57°C, add ethyl acetate, and start granulation. Control the amount of ethyl acetate added by taking samples to observe the size of the yellow particles. The more ethyl acetate is added, the greater the particle size of the yellow particles. (d) When the particle size of the yellow particles reaches the particle size between 8 and 50 mesh, stop adding ethyl acetate, open the vacuu...

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Abstract

The invention relates to the field of explosives, and particularly discloses a polymer bonded explosive for an ultra-high-temperature petroleum perforation bullet and a preparation method for the polymer bonded explosive. The explosive consists of hexanitrostilbene, a vinyl acetate-methyl acrylate-butyl acrylate terpolymer and graphite. The explosive has the characteristics of high heat-resistant elemental hexanitrostilbene content, easiness in detonation, high explosive pressing performance, higher pressing density and energy and high inter-component compatibility. The explosive consists of 96.8 to 98.2 mass percent of hexanitrostilbene, 1.5 to 2.5 mass percent of the vinyl acetate-methyl acrylate-butyl acrylate terpolymer and 0.3 to 0.7 mass percent of graphite. According to the explosive and the preparation method, combustion and explosion of the ultra-high-temperature petroleum perforation bullet under the conditions of 220 DEG C and 100 h or 250 DEG C and 4 h are avoided, and the explosive and the preparation method can be used for the exploitation of a deep well oilfield and an offshore oil-gas field.

Description

technical field [0001] The invention relates to a high-polymer bonded explosive for ultra-high temperature petroleum perforating bullets and a preparation method thereof, which are suitable for filling ultra-high temperature petroleum perforating bullets used in the exploitation of deep well oil fields and offshore oil and gas fields. Background technique [0002] In order to exploit deep well oil fields and offshore oil and gas fields, it is necessary to vigorously develop oil and gas well perforation technology, especially the main charge for filling ultra-high temperature petroleum perforating bullets. At present, the commonly used ultra-high temperature petroleum perforating bullets in China mainly include S992 and Y971, both of which have poor fluidity, low bulk density of explosives, difficult detonation, and insufficient compaction density, resulting in insufficient perforation energy, which cannot well meet the requirements of ultra-high temperature petroleum perforat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B25/04
Inventor 闫华刘小社张茂林贾宏选毋文莉荆昌伦卫涌
Owner SHANXI BEIHUA GUANLYU CHEM IND
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