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高含CO_2气井产量动态分析数学模型
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作者 吴明涛 王晓冬 袁天姝 《煤炭技术》 CAS 2018年第7期50-52,共3页
常规气井的产量动态分析模型难以适用于高含CO_2气井。在优选出适合计算高含CO_2天然气物性算法的基础上,利用拟时间因子方法使天然气渗流方程线性化,结合物质平衡方程、Laplace变换及Stehfest数值反演技术,得到方程解析解。建立了高含C... 常规气井的产量动态分析模型难以适用于高含CO_2气井。在优选出适合计算高含CO_2天然气物性算法的基础上,利用拟时间因子方法使天然气渗流方程线性化,结合物质平衡方程、Laplace变换及Stehfest数值反演技术,得到方程解析解。建立了高含CO_2气井产量动态分析数学模型,为此类气藏的开发提供了理论基础。 展开更多
关键词 高含CO2气井 拟时间因子 产量动态分析
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天山北坡低山春秋牧场产量动态分析 被引量:6
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作者 许鹏 胡锋铎 陈敬锋 《中国草地》 CSCD 1994年第3期6-9,共4页
以新疆分布最广泛的蒿类荒漠春秋牧场为对象进行定位研究,按组成草地类型复合体的亚型分别设置测产样地,对以大气与土壤水热状况为中心的环流进行多因素取样,研究了产草量形成的动态规律以及与环流的相关。本文主要分析了产量动态。
关键词 草地 类型 复合体 产量动态分析
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Throughput Analysis of Dynamic Spectrum Anti-Jamming Multiple-Access in HF Communication Systems 被引量:2
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作者 Yichao Zhu Chao Guo Xiaoxue Wang 《China Communications》 SCIE CSCD 2018年第9期85-94,共10页
A multiple-access networking scheme based on the new dynamic spectrum anti-jamming system is proposed in this paper. The network consists of a center node and multiple user nodes. The center node detects spectrum hole... A multiple-access networking scheme based on the new dynamic spectrum anti-jamming system is proposed in this paper. The network consists of a center node and multiple user nodes. The center node detects spectrum holes in the operation band periodically according to the user performance target. Detected spectrum holes are allocated to users who request communication. Throughput of this networking scheme is analyzed over a high-frequency(HF) interference channel. The effect of error correction coding and spectrum hole information transmission error is discussed. Throughput of this scheme and conventional frequency-hopping multiple-access(FHMA) scheme are compared. Results show that user performance increase leads to throughput decrease, which can be offset by error correction coding. If spectrum hole information transmission is in error, the throughput is not affected much as long as the bit error rate is below 10-2. Furthermore, throughput of this scheme is obviously superior to the throughput of FHMA scheme. 展开更多
关键词 dynamic spectrum anti-jamming multiple-access communication THROUGHPUT spectrum hole
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