肖丰浦;彭建福;侯秀芹;李明智;李亚楠;张军;张全义;

• 1:新疆油田公司工程技术研究院
• 2:新疆油田公司安全环保处
• 3:北京理工大学爆炸科学与技术国家重点实验室

摘要(Abstract)：

为确保热采井注氮采油工艺过程的安全生产，利用Fluent软件对井筒气相空间内可燃气体的分布情况开展了数值模拟研究，分析了井筒内可燃气体的燃爆危险性。结果表明：在氮气持续注入过程中，地层原油中挥发出的甲烷气体很难进入井筒气相空间，因此不会在井筒形成爆炸性环境；而在注氮停止后，甲烷会沿井筒逐渐向井口扩散，停注0.5 h时井筒内甲烷的平均体积分数已超过理论爆炸下限，存在燃爆风险，且停注时间越长，井筒内甲烷平均体积分数和扩散区域越大，整个井筒的燃爆危险性随之增加，因此，必须采取相应的防爆措施。

关键词(KeyWords)： 安全工程;热采井;注氮作业;数值模拟;扩散特征;燃爆危险性

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 肖丰浦;彭建福;侯秀芹;李明智;李亚楠;张军;张全义;

DOI: 10.13637/j.issn.1009-6094.2021.0844

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