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对结构的模拟调查及其对二氧化碳喷气式气体阻碍压力的影响
Chao Pu1, Zhenjian Liu2, Ge Pu1
1A Key Lab Low-Grade Energy Utilization Technologies & Systems, Chongqing University, Ministry of Education, Chongqing 400030, PR China.
ACS omega
|July 24, 2023
概括
了解超临界CO2 (SC-CO2) 喷气钻探需要分析流场. 这项研究揭示了流场结构如何影响SC-CO2喷射侵蚀性能,这对于优化钻井应用至关重要.
科学领域:
- 工程 工程师 工程师 工程师
- 流体动力学 流体动力学
- 材料科学 材料科学 材料科学
背景情况:
- 超临界二氧化碳 (SC-CO2) 喷气钻探是一种新兴技术.
- 喷气侵蚀性能受到SC-CO2喷气流场结构和动态波动的显著影响.
研究的目的:
- 研究不同SC-CO2喷流场之间的关系及其对侵蚀性能的影响.
- 为SC-CO2喷气钻井技术建立一个数值模拟模型.
主要方法:
- 使用修改的真气模型进行数值模拟.
- 对SC-CO2喷气的压力分布和流场特征的分析.
- 验证模拟模型的可靠性.
主要成果:
- SC-CO2喷流场表现出典型的可压缩流特性.
- 完全膨胀的喷气体显示轻微的压力波动,极少受到喷嘴壁距离的影响.
- 膨胀不足的喷流对流场结构非常敏感,会影响压力分布和峰值压力.
结论:
- 流场特征极大地影响SC-CO2喷气钻井性能,特别是在扩张不足的条件下.
- 喷嘴压力比率显著影响较长距离的流场和压力分布.
- 考虑不同的流场压力分布对于实际的SC-CO2喷气钻井应用是必不可少的.
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