页岩气作为一种重要的非常规天然气资源,在全球能源结构中占据越来越重要的地位。在页岩气的开发过程中,气体在页岩中的吸附行为对气藏评估和开发方案的制定至关重要。本文综述了页岩气藏中二氧化碳与甲烷的竞争吸附机理、影响因素、实...页岩气作为一种重要的非常规天然气资源,在全球能源结构中占据越来越重要的地位。在页岩气的开发过程中,气体在页岩中的吸附行为对气藏评估和开发方案的制定至关重要。本文综述了页岩气藏中二氧化碳与甲烷的竞争吸附机理、影响因素、实验研究进展、数值模拟方法及其实际应用,并对未来研究方向进行了展望。Shale gas, as an important unconventional natural gas resource, occupies an increasingly important position in the global energy mix. During the development of shale gas, the adsorption behaviour of the gas in shale is crucial for the assessment of the reservoir and the formulation of the development plan. This paper reviews the competitive adsorption mechanism of carbon dioxide and methane in shale gas reservoirs, the influencing factors, the progress of experimental research, numerical simulation methods and their practical applications, and gives an outlook on the future research direction.展开更多
针对复杂背景下手势图像受到干扰较多而导致的手势识别准确率低、识别速度慢问题,提出一种基于结构重参数化和注意力机制的复杂背景下手势识别算法RepSEHGR(re-parameter squeeze-expand hand gesture recognition)。通过使用结构重参...针对复杂背景下手势图像受到干扰较多而导致的手势识别准确率低、识别速度慢问题,提出一种基于结构重参数化和注意力机制的复杂背景下手势识别算法RepSEHGR(re-parameter squeeze-expand hand gesture recognition)。通过使用结构重参数化方法,将其应用到残差结构中,在部署阶段去除多余分支结构,提升算法识别速度;同时嵌入通道注意力机制模块,利用其为不同通道特征加权的特点使算法关注手势特征,减少复杂背景干扰;使用cutout与仿射变换2种数据增强方法训练算法,抑制复杂背景噪声输入并增强数据,减少过拟合的同时提升算法健壮性。在一个复杂背景手势数据集上进行对比实验,结果显示:识别精度达到99.9%,识别速度达到200 fps,证明了所提算法的有效性。展开更多
文摘页岩气作为一种重要的非常规天然气资源,在全球能源结构中占据越来越重要的地位。在页岩气的开发过程中,气体在页岩中的吸附行为对气藏评估和开发方案的制定至关重要。本文综述了页岩气藏中二氧化碳与甲烷的竞争吸附机理、影响因素、实验研究进展、数值模拟方法及其实际应用,并对未来研究方向进行了展望。Shale gas, as an important unconventional natural gas resource, occupies an increasingly important position in the global energy mix. During the development of shale gas, the adsorption behaviour of the gas in shale is crucial for the assessment of the reservoir and the formulation of the development plan. This paper reviews the competitive adsorption mechanism of carbon dioxide and methane in shale gas reservoirs, the influencing factors, the progress of experimental research, numerical simulation methods and their practical applications, and gives an outlook on the future research direction.
