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页岩气藏压裂水平井产能计算及其影响因素 被引量:1
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作者 宋彦志 杨倩 +3 位作者 任哲雨 陶永富 廖鸿辉 乔梁 《大庆石油地质与开发》 CAS 北大核心 2023年第3期158-166,共9页
为了研究页岩气藏压裂水平井生产动态和预测水平井产量,基于双重介质和离散裂缝模型,利用有限差分求解方法,建立页岩气藏压裂水平井数值计算模型。从储层参数、布缝模式和裂缝形态3个方面,对页岩气藏压裂水平井生产动态进行研究。结果表... 为了研究页岩气藏压裂水平井生产动态和预测水平井产量,基于双重介质和离散裂缝模型,利用有限差分求解方法,建立页岩气藏压裂水平井数值计算模型。从储层参数、布缝模式和裂缝形态3个方面,对页岩气藏压裂水平井生产动态进行研究。结果表明:微观流动机理的准确表征对气井产量计算有着重要影响;Langmuir体积越大,基质解吸能力越强,气井稳产阶段产量越高;应力敏感系数越大,裂缝导流能力降低越快,气井产量递减速度越快;U形布缝模式气井产量要大于反U形布缝和锯齿形布缝,弯曲裂缝气井产量要大于平直裂缝,裂缝的分布特点和形态特征对压裂水平井产量计算有着显著影响。研究结果为优化和提高页岩气井产能提供了理论支撑。 展开更多
关键词 页岩气藏 压裂水平井 产能模型 有限差分 流动表征
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Analysis and Research on Equivalent Model of Airbus A380 Wing Beam
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作者 LIU Yuqing ren zheyu +1 位作者 XUAN Hao MA Zhuqiao 《International Journal of Plant Engineering and Management》 2020年第4期205-222,共18页
With the development of aviation industry,civil aviation has become an indispensable part.Our team will take all the structural dimensions,loads and material parameters in the wing beam structure as the specific value... With the development of aviation industry,civil aviation has become an indispensable part.Our team will take all the structural dimensions,loads and material parameters in the wing beam structure as the specific values determined during the structural design to conduct deflection analysis on the wing beam structure of A380 passenger plane.According to the deflection and parameters analyzed,the stress distribution and maximum stress position on the wing beam can be known.Through the analysis of the wing parameters,the finite element analysis of the wing beam,the mesh sensitivity analysis,and the analysis of the wing tip deflection,the relevant safety factors of the aircraft are obtained.The results show that the wing of airbus A380 is more reliable and safer through the calculation of deflection,stress and safety factor. 展开更多
关键词 airbus A380 model parameter calculation wing beam analysis
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