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黏度对管内螺旋流径向压差的影响规律研究

224    2024-05-24

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作者:马智雄1,2,3, 廖锐全1,2,3, 杨汉杰4, 时国伟5, 王智慧1,2,3, 张兴凯1,2,3

作者单位:1. 长江大学石油工程学院,湖北 武汉 430100;
2. 中国石油天然气集团公司气举试验基地多相流研究室,湖北 武汉 430100;
3. 油气钻采工程湖北省重点实验室,湖北 武汉 430100;
4. 中国石油天然气股份有限公司西南油气田分公司蜀南气矿,四川 泸州 646000;
5. 青海中油甘河工业园区燃气有限公司,青海 西宁 810099


关键词:黏度;螺旋流;油水测量;数值模拟;多相流


摘要:

管内油水两相螺旋流的径向压差特性在多相流测量方面表现出非常好的应用前景。文章基于计算流体动力学(CFD)方法,研究不同流量(10~80 m3/d)、不同含水率(30%~90%)及不同油相黏度(50~15000 mPa·s)对管内油水两相流螺旋流径向压差特性的影响规律。分析不同工况下管内油水两相螺旋流流场特性,揭示油水混合流量、含水率与径向压差间的关系。研究结果表明:在油相黏度较低时,油水两相流通过旋流器后会形成稳定的“油核+水环”。当含水率和油水混合表观流速保持一定时,随着油相黏度增加,径向压差逐渐下降。当油相黏度超过10000 mPa·s后,径向压差与黏度无关,只取决于油水的混合流量。且发现径向压差与油水混合流量之间具有高度相关性,可以利用此机理,实现油水两相流流量测量。


Study on the influence of viscosity on radial pressure difference of spiral flow in pipe
MA Zhixiong1,2,3, LIAO Ruiquan1,2,3, YANG Hanjie4, SHI Guowei5, WANG Zhihui1,2,3, ZHANG Xingkai1,2,3
1. School of Petroleum Engineering, Yangtze University, Wuhan 430100, China;
2. Laboratory of Multiphase Pipe Flow of Gas Lift Test Base of CNPC, Wuhan 430100, China;
3. Key Laboratory of Drilling and Production Engineering for Oil and Gas, Hubei Province, Wuhan 430100, China;
4. Shunan Gas Mine, Southwest Oil and Gas Field Branch, PetroChina Company Limited, Luzhou 646000, China;
5. Qinghai Zhongyou Ganhe Industrial Park Gas Co., Ltd., Xining, 810099, China
Abstract: The radial differential pressure characteristics of oil-water two-phase spiral flow in the tube show a very good application prospect in multiphase flow measurement. Based on the computational fluid dynamics (CFD) method, Based on the computational fluid dynamics (CFD) method, the effects of different flow rates (10-80 m3/d), different water content (30%-90%) and different viscosity of oil phase (50-15000 mPa·s) on the radial pressure difference characteristics of oil-water two-phase flow in a pipe were studied. The flow field characteristics of oil-water two-phase spiral flow in pipes under different working conditions are analyzed, and the relationship between oil-water mixed flow rate, water content and radial pressure difference is revealed. The results show that: When the viscosity of oil phase is low, the oil-water two-phase flow will form a stable "oil-core + water ring" after passing through the cyclone. When the water content and the apparent flow rate of oil-water mixture remain constant, the radial pressure difference decreases gradually with the increase of the viscosity of oil phase. When the oil-phase viscosity exceeds 10000 mPa·s, the radial pressure difference is independent of the viscosity and only depends on the oil-water mixing flow rate. It is found that the radial pressure difference is highly correlated with the mixed flow rate of oil and water, which can be used to measure the flow rate of oil and water two-phase flow.
Keywords: viscosity;the spiral flow;oil and water measurement;numerical simulation;multiphase flow
2024, 50(5):36-41  收稿日期: 2022-11-09;收到修改稿日期: 2023-01-09
基金项目: 国家自然科学基金项目(62173049)
作者简介: 马智雄(1998-),男,湖北荆州市人,硕士研究生,专业方向为石油工程多相流测量与控制。
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