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鄂尔多斯盆地临兴气田临界携液流量模型
Critical liquid-carrying flow rate model for Linxing gasfield, Ordos Basin
刘世界1 蔡振华1 丁万贵2 杨宇光2 卓仁燕2 王文升1
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DOI:
作者单位:1. 中海油能源发展股份有限公司工程技术分公司 2. 中联煤层气有限责任公司
中文关键字:鄂尔多斯盆地 临兴气田 临界携液流量 修正系数 积液判识
英文关键字:Ordos Basin; Linxing gasfield; Critical liquid-carrying flow rate; Correction factor; Liquid-loading identification
中文摘要:    鄂尔多斯盆地临兴气田气井普遍具有低压、低产、携液能力差等特点,且大部分井为定向井,井深较浅,井斜角介于20°~ 30°,现有临界携液流量模型对该气田适应性较差。在Tuner 模型、李闽模型、王毅忠模型的基础之上,引入临界携液流速系数(β),通过最优化算法,使用积液实测数据,优化、校正β,建立了适合于临兴的直井及定向井临界携液流量计算模型。并对气田15 口井进行积液判识。结果表明:①临兴气田直井、定向井临界携液流量模型的修正系数β 分别为2.7、3.6 ;②该模型预测的临兴气田气井积液效果较好,预测精度达到93.3%。
英文摘要:    In Linxing gasifled, Ordos Basin, most gas wells are generally characterized by low pressure and production rate, and poor liquid-carrying capacity. Most of them are directional wells with shallower well depth and hole deviation angle between 20° and 30° . Many existing critical liquid-carrying flow rate models are poor adaptable to this field. So, on the basis of Turner, Li Min, and Wang Yizhong models, another model to calculate the critical liquid-carrying flow rate available for vertical and directional wells in Linxing gasfield was established by introducing critical liquid-carrying velocity coefficient β, optimizing and correcting the coefficient β by means of optimization algorithm, and combining with measured liquid-loading data. Then, the model was applied to identify liquid loading in 15 wells. Results show that (1) for this model, the correction coefficient β is respectively 2.7 and 3.6 for the vertical and directional wells in Linxing gasfield; and (2) with accuracy of 93.3 %, the model presents better prediction on the liquid loading in these
gas wells .
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国内统一连续出版物号:CN51-1159/TE |国内发行代码: |国际标准出版物号:ISSN1673-3177 |国际发行代码:
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