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[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):1402-1412.[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(12):1402-1412.[doi:10.6047/j.issn.1000-8241.2024.12.008]
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基于旋进漩涡与文丘里流量计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12期 页码: 1402-1412 栏目: 工艺与工程 出版日期: 2024-12-25
Title:
Experimental study on wet gas metering by a combination of precession vortex and Venturi
文章编号:
1000-8241（2024）12-1402-11
作者:
梁裕如1; 何鹏1; 孟祥振1; 韩建红1; 张攀2; 艾昕宇1
1.陕西延长石油（集团）有限责任公司天然气研究院分公司;2.陕西延长石油（集团）有限责任公司气田公司
Author(s):
LIANG Yuru1; HE Peng1; MENG Xiangzhen1; HAN Jianhong1; ZHANG Pan2; AI Xinyu1
1.Natural Gas Research Institute Branch, Shaanxi Yanchang Petroleum (Group) Co. Ltd.; 2.Gas Field Company, Shaanxi Yanchang Petroleum (Group) Co. Ltd.
关键词:
延安气田; 组合计量; 计量模型; 进动频率; 压降
Keywords:
Yan'an Gas Field;  combined metering;  metering model;  precession frequency;  pressure drop
分类号:
TE866
DOI:
10.6047/j.issn.1000-8241.2024.12.008
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，存在由于单井产气计量误差大、无法掌握单井产液量的难题。【方法】采用旋进漩涡流量计与文丘里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实验，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有增大的趋势，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于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】在特定体积含液率条件下，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。（图10，表3，参20）
Abstract:
[Objective] Vortex precession flowmeters or differential pressure flowmeters are prevalently used for metering wet gas flow at wellheads in Yan'an Gas Field. However, single-well gas production metering often involves significant errors, and it is challenging to accurately determine liquid output for individual wells. To tackle these challenges, an experimental study was conducted to investigate metering rules of gas-liquid two-phase flow and a metering model was developed. This study aims to provide valuable reference for gas-liquid two-phase metering practices within Yan'an Gas Field. [Methods] Leveraging the characteristics of “ under-reading” in vortex precession flowmeters and “over-reading” in Venturi flowmeters, these two kinds of flowmeters were combined in series. This combined metering approach was used to conduct a multiphase flow loop experiment using an air-water medium. This experiment focused on examining the variations in precession frequency and Venturi pressure drop with different liquid volume fractions (LVF) under varying operating pressures and superficial gas velocities. Furthermore, based on the principle of single-phase flow measurement, dimensionless parameters that affect frequency signals and pressure drop signals were introduced through a dimensional method. A combined frequency-pressure drop model for wet gas metering was rationally established, incorporating exponential correction terms for these dimensionless parameters. [Results] With the increase of LVF, the precession frequency decreased gradually while the pressure drop of the Venturi flowmeter increased, embodying their respective tendencies of “under-reading” and “over-reading”. The “frequency-pressure drop” signals became distorted at an LVF exceeding 1%. Through field experiments, the efficacy of the devised combined metering model was verified for wellhead metering at the on-site gas wells. The resultant gas-phase volumetric flows, attained through a solving process, displayed a maximum error of 5.2% and an average relative error of 2.5%. Concerning liquid-phase volumetric flows, the maximum error reached 46.8%, with an average relative error of 15.0%. LVF calculations exhibited a maximum error of 0.15% and an average absolute error of 0.05%. [Conclusion] The proposed metering model that combines vortex precession flowmeters and Venturi flowmeters demonstrates controllable measurement accuracy when dealing with LVFs below 1%. This range aligns well with the LVF distribution typically observed in the natural gas from the gas-producing wells in the Yan'an Gas Field. The study outcomes offer valuable technical insights to support the meticulous management of gas wells. (10 Figures, 3 Tables, 20 References)

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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的湿气组合计量实验[J].油气储运,2024,43(11):1.
　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(12):1.

备注/Memo

梁裕如，女，1984年生，教授级高工，2009年硕士毕业于中国石油大学（北京）油气储运工程专业，现主要从事油气田地面集输研究工作。地址：陕西省西安市高新区唐延路61号延长石油科研中心，710075。电话：18729976459。Email：190187691@qq.com
通信作者：何鹏，男，1988年生，高级工程师，2014年硕士毕业于西安石油大学油气储运工程专业，现主要从事油气田地面集输研究工作。地址：陕西省西安市高新区唐延路61号延长石油科研中心，710075。电话：18092649150。Email：hp18092649150@163.com
基金项目：陕西省重点研发计划——工业领域“致密气藏产水气井产量优化技术研究”，2021GY167；陕西延长石油（集团）有限责任公司科研项目“延安气田上古气藏湿气输送关键技术研究”，ycsy2021kyB10。
● Received: 2024-01-26● Revised: 2024-03-06● Online: 2024-05-07

更新日期/Last Update: 2024-12-25