高能气体压裂弹在井下爆燃特性研究
Well Logging Technology(2020)
Abstract
采用密闭爆燃测试装置,测试5 mm/s和8 mm/s这2种燃速HTPB推进剂装药的高能气体压裂弹试样在水中爆燃时加载压力与时间动态变化曲线,分析可知,随着高能气体压裂弹中草酸铵组分增加,其受热分解产生的氨气能抑制压裂弹燃速增长,并产生大量气体增加压裂弹爆燃峰值压力.采用射孔压力计测试2种不同燃速压裂弹组合在井下爆燃压裂的p-t曲线,在同等装药量下,2发燃速为5 mm/s与2发燃速为8 mm/s的压裂弹串接爆燃压裂特性最理想,可用于工程施工作业指导.
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