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Heat resisting and pressure resisting safe electric detonator for oil well

A safe electrical and voltage-resistant technology, applied in the field of blasting, can solve problems such as the inability to meet the safety requirements of electric detonators

Inactive Publication Date: 2006-10-18
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is far from meeting the demand for safe detonation of electric detonators in high-temperature and high-pressure environments in deep wells

Method used

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  • Heat resisting and pressure resisting safe electric detonator for oil well

Examples

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Comparison scheme
Effect test

Embodiment Construction

[0015] The charging process is the flip-chip method. First put the glass electrode plug (8) with the nickel-chromium bridge wire (7) welded and the foot wire (12) inside into the common industrial detonator shell (2), and the foot wire (12) is preferably bonded to the glass The Dumet wire; then the detonator shell (2) is packed into the powder pressing mold, and the first layer of charge at one end of the nickel-chromium bridge wire (7) is an ignition powder (6), and the ignition powder is a granular potassium picrate crystal; The second charge next to the ignition powder (6) is the primer (5), the primer is carboxymethyl cellulose lead nitride, its crystal form is a spherical or elliptical polymer crystal, and it has the performance of high temperature resistance above 230°C ; The third layer of charge next to the primer is loose explosive (4), the fourth layer of charge next to the loose explosive is heat-resistant explosive (3), and the loose explosive and heat-resistant ex...

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Abstract

The heat resisting and pressure resisting safe electric detonator is used for explosive charge or blasting cartridge in well perforation, seismic prospecting, etc. and relates to blasting technology. The heat resisting and pressure resisting safe electric detonator has high temperature igniting powder and high temperature explosive for the high heat resistance; double-layered case structure with increased steel outer shell, conic aluminum plug and rubber plug of high temperature fluoric rubber for raised structure sealing and pressure resisting performance; and Ni-Cr wire for ignition for raised antistatic safety performance. The present invention has heat resisting performance up to 230 and pressure resisting performance up to 60MPa for safe detonation in well.

Description

Technical field: [0001] The invention relates to a temperature-resistant and pressure-resistant safety electric detonator for an oil field, and relates to the technical field of blasting. Background technique: [0002] The invention is mainly used as a safety electric detonator for oil wells that can simultaneously withstand a temperature of 230°C and a pressure of 60MPa for 24 hours. As the depth of oil and gas wells increases, the downhole temperature and pressure also continue to rise. Under the harsh environmental conditions in the mine, the detonator has the risk of accidental explosion under the action of high temperature and high pressure. The SW-type heat-resistant and pressure-resistant detonator that has been produced in China has a temperature-resistant and pressure-resistant index of 180°C temperature and 90MPa pressure for 2h. It is far from meeting the demand for safe detonation of electric detonators in deep well high-temperature and high-pressure environmen...

Claims

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Application Information

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IPC IPC(8): F42C19/12C06B25/00
Inventor 汪佩兰周宝庆严楠焦清介高毅李云生李晓嵩
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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