The Performance Test and Application in Shaped Charge of Heat Resistance Explosive LLM-105

Abstract

In order to guarantee the safety and reliability on the operation of oil and gas well, tested the thermal stability, mechanical sensitivity, flame sensitivity, electrostatic spark sensitivity and the 5s delay explosion temperature of LLM- 105 explosive. And conducted the tests with 4 1/2 perforating charge loaded mixed LLM-105 under the temperature of normal, 220℃ /100h and 220℃ /2h/20Mpa conditions. Contrasted with the perforating deep test results of perforating charge loaded S992、 Y971 on normal temperature. The test results show that the thermal stability of LLM-105 is stable, DSC maximum exothermic peak up to 360.02 ℃ , impact sensitivity is 42%,friction sensitivity is 16%,flame sensitivity is 0%,electrostatic spark sensitivity is low and no obvious ignition, the 5s delay explosion temperature is 387℃, so LLM-105 is an excellent insensitive heat-resistant explosive, the steel target perforating deep results of 4 1/2perforating charge loaded LLM-105 show that the average penetration depth are respectively 256.3mm and 254.7mm on normal temperature and 200℃ /100h condition. The perforating deep results of API columnar concrete targets show that the average penetration depth of charge loaded LLM-105 is 922.5mm on 220℃ /2h/20Mpa condition. the steel target perforating deep of 4 1/2charge loaded LLM-105 increased 25.3% than charge loaded S992, increased 36.7% than charge loaded Y791 on normal temperature condition.