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[1]梁裕如,何鹏,孟祥振,等.基于旋进漩涡与文丘里的湿气组合计量实验[J].油气储运,2024,43(11):1-14.
LIANG Yuru,HE Peng,MENG Xiangzhen,et al.Experimental study on the moisture measurement by combination of precession vortex and Venturi[J].Oil & Gas Storage and Transportation,2024,43(11):1-14.
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LIANG Yuru,HE Peng,MENG Xiangzhen,et al.Experimental study on the moisture measurement by combination of precession vortex and Venturi[J].Oil & Gas Storage and Transportation,2024,43(11):1-14.
基于旋进漩涡与文丘里的湿气组合计量实验
《油气储运》[ISSN:1000-8241/CN:13-1093/TE]
卷:
43
期数:
2024年11期
页码:
1-14
栏目:
出版日期:
2024-11-25
- Title:
- Experimental study on the moisture measurement by combination of precession vortex and Venturi
- 分类号:
- TE866
- 文献标志码:
- A
- 摘要:
- 【目的】延安气田普遍采用旋进漩涡流量计或差压流量计进行井口湿气计量，存在单井产气计量误差大、无法掌握单井产液量的难题，为解决延安气田井口湿气计量问题，研究了气液两相计量规律并建立计量模型，可为延安气田气液两相计量提供参考。【方法】利用旋进漩涡流量计“虚低”及文丘里流量计“虚高”特性，采用两种流量计串联组合的计量方式，以空气—水为介质开展多相流环道试验，分析不同运行压力及表观气速条件下，旋进漩涡进动频率与文丘里压降随体积含液率的变化规律，同时基于单相流量测量原理，采用量纲分析法提出影响频率信号与压降信号的无量纲参数，通过增加无量纲参数的幂指数修正项，建立适用的湿气双组合频率—压降计量模型。【结果】随着体积含液率的增大，旋进漩涡进动频率逐渐降低，文丘里流量计节流压降则呈现增大的趋势，呈现“虚低”“虚高”两种不同的特性；当体积含液率大于1%时，“频率—压降”信号失真。现场试验测试数据表明，建立的组合计量模型可用作现场气井井口计量测试，求解后气相体积流量的最大误差为5.2%，平均相对误差为2.5%，液相体积流量的最大误差为46.8%，平均相对误差为15.0%，体积含液率的最大误差为0.15%，平均绝对误差为 0.05%。【结论】在体积含液率低于1%时，旋进漩涡流量计与文丘里流量计组合计量模型测量精度可控，符合延安气田生产气井中天然气体积含液率的分布范围，可为气井精细化管理提供有效技术支撑。
- Abstract:
- 【Objective】 In order to solve the problem of moisture metering at the wellhead of Yan'an gas field, the law of gas-liquid two-phase measurement was studied and the measurement model was established, which could provide a reference for the gas-liquid two-phase metering in Yan'an gas field. 【Method】 Using the characteristics of "virtual low" and "virtual high" of the precession vortex flowmeter and the "virtual high" of the venturi flowmeter, the measurement method of the series combination of two flowmeters was adopted. At the same time, based on the principle of single-phase flow measurement, the dimensionless parameters affecting the frequency signal and the pressure drop signal were proposed by using the dimensional analysis method, and the applicable moisture double combination frequency-pressure drop measurement model was established by adding the power index correction term of the dimensionless parameters.【Result】 With the increase of the volumetric liquid content, the precession frequency of the precession vortex decreases gradually, while the throttling pressure drop of the Venturi flowmeter shows an increasing trend, showing two different characteristics: "virtual low" and "virtual high", and when the volumetric liquid content is greater than 1%, the "frequency-pressure drop" signal is distorted. The field test data show that the established combined metrology model can be used as a field gas well wellhead measurement test, and the maximum error of the gas phase volume flow rate is 5.2%, the average relative error is 2.5%, the maximum error of the liquid phase volume flow rate is 46.8%, the average relative error is 15.0%, the maximum error of the volume liquid content is 0.15%, and the average absolute error is 0.05%. 【Conclusion】 When the volume liquid content is less than 1%, the measurement accuracy of the combined measurement model of the precession vortex flowmeter and the venturi flowmeter is controllable, which is in line with the distribution range of the volume liquid content of natural gas in the production gas wells of Yan'an gas field, and can provide effective technical support for the fine management of gas wells.
相似文献/References:
[1]梁裕如,何鹏,孟祥振,等.基于旋进漩涡与文丘里流量计的湿气组合计量实验[J].油气储运,2024,43(12):1402.[doi:10.6047/j.issn.1000-8241.2024.12.008]
LIANG Yuru,HE Peng,MENG Xiangzhen,et al.Experimental study on wet gas metering by a combination of precession vortex and Venturi[J].Oil & Gas Storage and Transportation,2024,43(11):1402.[doi:10.6047/j.issn.1000-8241.2024.12.008]
更新日期/Last Update:
2024-05-07