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Temperature-resistant explosive for assembly of detonating primer in oil exploitation and preparation method thereof

A technology for oil exploitation and detonation tubes, which is applied in explosives processing equipment, explosives, nitrated acyclic/alicyclic/heterocyclic amine explosive compositions, etc. It can solve problems such as low detonation sensitivity, poor fluidity, and serious flying powder. It achieves the effects of high detonation sensitivity and shock wave sensitivity, good detonation transmission reliability, and good pressure charge performance

Active Publication Date: 2016-04-20
SHANXI BEIHUA GUANLYU CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the domestic single-substance explosives RDX (RDX) and Octojin (HMX) have good detonation energy and good heat resistance (RDX180℃, HMX200℃), especially the detonation sensitivity of HMX is ideal , but there are serious deficiencies in its static electricity, fluidity, press-fitting process, safety and strength.
Although domestically produced polymer bonded explosives such as R791, A-5, PBXN-5, and R852 are superior to simple explosives in terms of safety and charge process, their detonation sensitivity, detonation energy, and reliability are all poor. It is difficult to meet the technical requirements of downhole operations
[0004] In order to solve the current technical problems such as difficult to suppress the temperature-resistant detonating tube, poor fluidity, serious flying powder, poor reliability after being assembled into a detonating tube, and low detonation sensitivity, it is urgent to provide a new type of temperature-resistant detonating tube.

Method used

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  • Temperature-resistant explosive for assembly of detonating primer in oil exploitation and preparation method thereof

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preparation example Construction

[0026] The present invention also provides a method for preparing an explosive for assembling a temperature-resistant detonation tube for oil exploitation described in the above technical solution, comprising the following steps:

[0027] (1) Mix Octojin HMX with water to obtain a suspension;

[0028] (2) mixing the suspension obtained in the step (1) with a binder and a demulsifier to obtain a mixed solution;

[0029] (3) The mixed solution obtained in step (2) is heated and mixed with ethyl acetate for granulation;

[0030] (4) removing ethyl acetate in the product after the granulation;

[0031] (5) Filtrate the product after removing ethyl acetate in step (4) to obtain explosives.

[0032] In the present invention, Octogen HMX is mixed with water to obtain a suspension. The present invention has no special limitation on the mixing method, and the technical scheme of mixing materials well known to those skilled in the art can be adopted. In the present invention, Octoge...

Embodiment 1

[0041] (1) Put 19.7kg of Octojin HMX into 80kg of water and stir to obtain a suspension;

[0042] (2) Add 0.787kg of binder to the suspension, stir well and then add 0.985kg of anhydrous Na 2 SO 4 Demulsifier, stir evenly to obtain a mixed solution;

[0043] (3) The resulting mixed solution is heated up to 65°C at a rate of 2°C / min, and ethyl acetate is added at a rate of 30ml / min for granulation, and the amount of ethyl acetate added is controlled by sampling to observe the size of the white particles. The more the amount of ester added, the larger the size of the white particles;

[0044] (4) When the particle size of the white particles reaches the particle size between 1.70mm ~ 0.30mm (12 mesh ~ 50 mesh), stop adding ethyl acetate, open the vacuum system, make the vacuum degree reach 0.02MPa, and heat the mixed solution to Distill ethyl acetate at 75°C;

[0045] (5) After the distillation of ethyl acetate is completed, the mixed solution is cooled to 40° C., and then t...

Embodiment 2

[0049] (1) Put 19.74kg of Octojin HMX into 72kg of water and stir to obtain a suspension;

[0050] (2) Add 0.682kg of binder to the suspension, stir well and then add 0.434kg of anhydrous Na 2 SO 4 demulsifier, and stir evenly to obtain a mixed solution;

[0051] (3) The resulting mixed solution was heated up to 63°C at a rate of 2.5°C / min, and ethyl acetate was added at a rate of 28mL / min for granulation, and the amount of ethyl acetate added was controlled by sampling to observe the size of the white particles. The more the amount of ester added, the larger the size of the white particles;

[0052] (4) When the particle size of the white particles reaches the particle size between 1.70mm ~ 0.30mm (12 mesh ~ 50 mesh), stop adding ethyl acetate, open the vacuum system, make the vacuum degree reach 0.02MPa, and heat the mixed solution to Distill ethyl acetate at 73°C;

[0053] (5) After the distillation of ethyl acetate is completed, the mixed solution is cooled to 38° C., ...

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Abstract

The invention provides a temperature-resistant explosive for assembly of a detonating primer in oil exploitation and a preparation method thereof. The temperature-resistant explosive for assembly of the detonating primer in oil exploitation is prepared from 98.5-99.5 wt% of cyclotetramethylene tetramine (HMX) and 0.5-1.5 wt% of binding agent soft acrylic resin 2#. The temperature-resistant explosive has the advantages of being good in reliability of detonation transmission, high in explosive initiation sensitivity and shock wave sensitivity, great in power, resistant to high temperature and good in explosive pressing property. The preparation method is easy and convenient to operate and suitable for industrial production.

Description

technical field [0001] The invention relates to the field of explosives, in particular to an explosive for assembling a temperature-resistant detonator tube for oil exploitation and a preparation method thereof. Background technique [0002] With the exploitation of underground resources and the development of space navigation, a kind of high temperature, high pressure (or low pressure) explosives (referred to as heat-resistant explosives) demand more and more, especially in the field of oil extraction. In the process of oil exploration and production, after drilling and cementing are completed, oil well perforation needs to be carried out to open the channel between the formation and the wellbore to allow fluid to flow into the wellbore. The perforating charge is the blasting equipment installed on the perforator to perforate the well wall. In oil deep well perforating operations, high temperature resistant blasting equipment is required, such as heat resistant detonators ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B25/34C06B21/00
CPCC06B21/0025C06B25/34
Inventor 闫华荆昌伦姚新民贾宏选侯会生王卫星谢利鹏介二林
Owner SHANXI BEIHUA GUANLYU CHEM IND
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