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| 石油工程中偏心油管内液流失速水击特性分析 |
| Analysis of Water Hammer Characteristics of Fluid Flow Stall in Eccentric Tubing used in Petroleum Engineering |
| Received:February 21, 2017 Revised:May 30, 2017 |
| DOI：10.7520/1001-4888-17-034 |
| 中文关键词: 偏心 油管 失速 流场 压力场 涡量 |
| 英文关键词:eccentric oil tube stall flow field pressure field vorticity |
| 基金项目:国家自然科学基金资助项目(No.51541912)；“十二五”国家科技支撑项目资助(2102BAD08B03-2)资助 |
| Author Name | Affiliation | | XI Bin* | College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China | | LIU Yang | Northeast University of Petroleum, Daqing 163318, China | | LU Wei-gang | College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China | | ZHOU Ji-ren | College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China |
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| 中文摘要: |
| 为了对石油工程中油管偏心时液流失速水击特性进行分析研究，并给注水、洗井等工艺提供借鉴，本文利用试验装置，结合PIV、瞬态压力测量系统，对偏心油管内液流失速的流场流线、速度、涡量特性以及压力场特性进行了分析。得出了如下结论：水击发生时，随着偏心距的加大，油管内、外壁压力易产生严重失衡，油管内液流速度衰减变慢；油套环内流速随油管内流速衰减而增加；小流道内流速随偏心距增大而减小；涡量随偏心距的增加而减小。 |
| 英文摘要: |
| In order to analyze the water hammer characteristics of fluid flow stall in eccentric tubing used in petroleum engineering, and to provide reference for waterflooding, well washing technology etc, in this paper, the flow field streamline, velocity, vorticity and pressure field characteristics of fluid flow stall in eccentric tubing are analyzed by means of experimental device combined with PIV and transient pressure measurement system. Results show that when water hammer occurs, with the increase of eccentricity, the pressures of inner and outer tube wall are seriously unbalanced, and the velocity of liquid flow in tube decreases slowly; the flow velocity in oil collar increases with the decrease of flow velocity in tube; the flow velocity in small passage decreases with the increase of eccentricity; the vorticity decreases with the increase of eccentricity. |
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