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Low-pressure formed explosive

A low-pressure, explosive technology, applied in the field of explosives, can solve problems such as high softening point of binders and potential safety hazards, and achieve the effects of increased bulk density, reduced mechanical sensitivity, and good explosion effects

Active Publication Date: 2013-01-23
SHANXI BEIHUA GUANLYU CHEM IND
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Problems solved by technology

[0003] In order to solve the technical problem that the softening point of the binder in the explosives used in oil and gas wells is relatively high, which requires a relatively high pressure in the process of pressing the explosives, and there are great potential safety hazards, the present invention provides a low-pressure forming dynamite

Method used

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Embodiment Construction

[0011] A low-pressure molded explosive is prepared through the following steps: (a) put water in a container, put RDX into the water, and stir to form a suspension; the quality of the water in the container is RDX 1.5~2.0 times (1.5, 1.6, 1.7, 1.8, 1.9, 2.0 can be selected); (b) Add binder and plasticizer to the suspension, stir evenly, then add a sufficient amount of demulsifier, and stir evenly ; The binder is vinyl acetate-ethylene-acrylate terpolymer, the plasticizer is dibutyl phthalate, 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; The size of the white particles controls the amount of ethyl acetate added, the more ethyl acetate is added, the larger the particle size of the white particles; (d) When the size of the white particles reaches the particle size between 8 and 50 mesh, stop adding acetic acid Ethyl acetate, vacuum the t...

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Abstract

The invention relates to the field of explosives, in particular to a low-pressure formed explosive and solves the technical problems that the explosive is formed by pressing under large pressure in the explosive pressing process due to the high softening point of the explosive used in an oil gas well at present, and the compaction density of the pressed explosive is low due to low uniformity of particle sizes. The low-pressure formed explosive is prepared by the following steps of: a) putting water in a container, putting cyclonite in water, and stirring to prepare suspension; b) adding an adhesion agent and plasticizer into the suspension, uniformly stirring, adding a sufficient amount of a demulsifying agent, and uniformly stirring; c) heating the obtained mixture to 55 to 60 DEG C, and adding ethyl acetate and pelletizing; and d) when the particle size of white particles reaches 8 to 50 meshes, stopping adding ethyl acetate. The pressure required during explosive pressing is reduced obviously, the safety in the explosive pressing and loading processes is guarantee, and the compaction density of the explosive in the explosive pressing process can be improved simultaneously.

Description

technical field [0001] The invention relates to the field of explosives, in particular to a low-pressure shaped explosive. Background technique [0002] At present, the main charges of normal temperature petroleum perforating bullets used in oil and gas wells are R852 and SH-931 explosives based on HERSOGEN. In order to ensure the safety of the pressed charge, in the production of R852 and SH-931 explosives, RDX is used to make polymer bonded explosives, and the binders used in the manufacturing process are acrylonitrile-butyl acrylate copolymers. , Copolymers of acrylic resins, these copolymers and black cable are now made into explosives through a certain manufacturing process. Since the softening points of these two binders are relatively high, a relatively high pressure is required to press the explosive into shape during the pressing process, which makes it easy to detonate during the pressing process; and the explosives currently used in oil and gas wells The particl...

Claims

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Application Information

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IPC IPC(8): C06B25/34
Inventor 闫华贾宏选张茂林王卫星刘挺董艳霞
Owner SHANXI BEIHUA GUANLYU CHEM IND
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