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井下旋流分离管柱的振动特性研究

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为研究旋流分离管柱在注入泵和采出泵两螺杆泵抽吸条件下的振动特性,对其进行模态分析和瞬态动力响应分析.结果表明,不同工况下,旋流分离管柱的固有频率有所不同;固定注入泵一端和固定采出泵一端相比,固定采出泵一端各阶固有频率较小;螺杆泵转动引起的激振力和内部流量变化都会导致管柱变形,其中螺杆泵转动对旋流分离管柱变形影响较大;相对于固定采出泵,固定注入泵条件下旋流分离管柱产生的振动位移更大,是旋流分离管柱自身结构和注入泵转速产生更大激振力综合作用导致的结果;控制两个螺杆泵工作状态的时间差,理想情况下可以控制旋流分离管柱的总变形.
Study on Vibration Characteristics of Downhole Hydrocyclone Separation String
For purpose of investigating vibration characteristics of the hydrocyclone separation string under twin-screw pump's suction condition,both modal analysis and transient dynamic response analysis were implemented to indicate that,the natural frequencies of the vortex separation column varies at different working conditions;through comparing one end of the fixed injection pump with that of the fixed production pump,the natural frequencies of each stage at the fixed injection pump's one end are smaller;the exciting force and internal flow variation induced by the rotation of the screw pump will cause pipe string deforma-tion,and the deformation caused by the screw pump rotation is larger.As opposed to the fixed injection pump and regarding the fixed production pump,the combined effect of the cyclone separation string's structure and the higher exciting force generated by the injection pump speed can result in hydrocyclone separation string's larger vibration displacement.Controlling time difference between the working states of two screw pumps can ideally control total deformation of the hydrocyclone separation string.

hydrocyclone separation stringscrew pump vibrationdynamic responseunsteady flowsame well injection & production

赵立新、金宇、张晓光、蒋明虎、徐保蕊、周龙大、刘佳成

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东北石油大学机械科学与工程学院 黑龙江省石油石化多相介质处理及污染防治重点实验室

旋流分离管柱 螺杆泵振动 动力响应 非定常流动 同井注采

国家自然科学基金区域创新发展联合基金中国博士后科学基金东北石油大学引导性创新基金东北石油大学人才引进科研启动经费

U21A201042021M6905942021YDL-142020KQ19

2024

化工机械
天华化工机械及自动化研究设计院有限公司

化工机械

CSTPCD
影响因子:0.325
ISSN:0254-6094
年,卷(期):2024.51(1)
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